diff options
Diffstat (limited to 'src')
180 files changed, 3725 insertions, 2779 deletions
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py index effd33d288f..8b1775178c9 100644 --- a/src/bootstrap/bootstrap.py +++ b/src/bootstrap/bootstrap.py @@ -596,6 +596,7 @@ class RustBuild(object): self.download_url = ( os.getenv("RUSTUP_DIST_SERVER") or self.stage0_data["dist_server"] ) + self.jobs = self.get_toml("jobs", "build") or "default" self.build = args.build or self.build_triple() @@ -1144,6 +1145,7 @@ class RustBuild(object): args = [ self.cargo(), "build", + "--jobs=" + self.jobs, "--manifest-path", os.path.join(self.rust_root, "src/bootstrap/Cargo.toml"), "-Zroot-dir=" + self.rust_root, diff --git a/src/bootstrap/src/core/build_steps/check.rs b/src/bootstrap/src/core/build_steps/check.rs index 043457f64e5..20c54a28dda 100644 --- a/src/bootstrap/src/core/build_steps/check.rs +++ b/src/bootstrap/src/core/build_steps/check.rs @@ -8,8 +8,8 @@ use crate::core::build_steps::compile::{ }; use crate::core::build_steps::tool; use crate::core::build_steps::tool::{ - COMPILETEST_ALLOW_FEATURES, SourceType, TEST_FLOAT_PARSE_ALLOW_FEATURES, ToolTargetBuildMode, - get_tool_target_compiler, prepare_tool_cargo, + SourceType, TEST_FLOAT_PARSE_ALLOW_FEATURES, ToolTargetBuildMode, get_tool_target_compiler, + prepare_tool_cargo, }; use crate::core::builder::{ self, Alias, Builder, Cargo, Kind, RunConfig, ShouldRun, Step, StepMetadata, crate_description, @@ -654,7 +654,7 @@ macro_rules! tool_check_step { // The part of this path after the final '/' is also used as a display name. path: $path:literal $(, alt_path: $alt_path:literal )* - // Closure that returns `Mode` based on the passed `&Builder<'_>` + // `Mode` to use when checking this tool , mode: $mode:expr // Subset of nightly features that are allowed to be used when checking $(, allow_features: $allow_features:expr )? @@ -682,8 +682,7 @@ macro_rules! tool_check_step { fn make_run(run: RunConfig<'_>) { let target = run.target; - let builder = run.builder; - let mode = $mode(builder); + let mode: Mode = $mode; let compiler = prepare_compiler_for_check(run.builder, target, mode); @@ -704,7 +703,7 @@ macro_rules! tool_check_step { _value }; let extra_features: &[&str] = &[$($($enable_features),*)?]; - let mode = $mode(builder); + let mode: Mode = $mode; run_tool_check_step(builder, compiler, target, $path, mode, allow_features, extra_features); } @@ -767,57 +766,50 @@ fn run_tool_check_step( tool_check_step!(Rustdoc { path: "src/tools/rustdoc", alt_path: "src/librustdoc", - mode: |_builder| Mode::ToolRustcPrivate + mode: Mode::ToolRustcPrivate }); // Clippy, miri and Rustfmt are hybrids. They are external tools, but use a git subtree instead // of a submodule. Since the SourceType only drives the deny-warnings // behavior, treat it as in-tree so that any new warnings in clippy will be // rejected. -tool_check_step!(Clippy { path: "src/tools/clippy", mode: |_builder| Mode::ToolRustcPrivate }); -tool_check_step!(Miri { path: "src/tools/miri", mode: |_builder| Mode::ToolRustcPrivate }); -tool_check_step!(CargoMiri { - path: "src/tools/miri/cargo-miri", - mode: |_builder| Mode::ToolRustcPrivate -}); -tool_check_step!(Rustfmt { path: "src/tools/rustfmt", mode: |_builder| Mode::ToolRustcPrivate }); +tool_check_step!(Clippy { path: "src/tools/clippy", mode: Mode::ToolRustcPrivate }); +tool_check_step!(Miri { path: "src/tools/miri", mode: Mode::ToolRustcPrivate }); +tool_check_step!(CargoMiri { path: "src/tools/miri/cargo-miri", mode: Mode::ToolRustcPrivate }); +tool_check_step!(Rustfmt { path: "src/tools/rustfmt", mode: Mode::ToolRustcPrivate }); tool_check_step!(RustAnalyzer { path: "src/tools/rust-analyzer", - mode: |_builder| Mode::ToolRustcPrivate, + mode: Mode::ToolRustcPrivate, allow_features: tool::RustAnalyzer::ALLOW_FEATURES, enable_features: ["in-rust-tree"], }); tool_check_step!(MiroptTestTools { path: "src/tools/miropt-test-tools", - mode: |_builder| Mode::ToolBootstrap + mode: Mode::ToolBootstrap }); // We want to test the local std tool_check_step!(TestFloatParse { path: "src/tools/test-float-parse", - mode: |_builder| Mode::ToolStd, + mode: Mode::ToolStd, allow_features: TEST_FLOAT_PARSE_ALLOW_FEATURES }); tool_check_step!(FeaturesStatusDump { path: "src/tools/features-status-dump", - mode: |_builder| Mode::ToolBootstrap + mode: Mode::ToolBootstrap }); -tool_check_step!(Bootstrap { - path: "src/bootstrap", - mode: |_builder| Mode::ToolBootstrap, - default: false -}); +tool_check_step!(Bootstrap { path: "src/bootstrap", mode: Mode::ToolBootstrap, default: false }); // `run-make-support` will be built as part of suitable run-make compiletest test steps, but support // check to make it easier to work on. tool_check_step!(RunMakeSupport { path: "src/tools/run-make-support", - mode: |_builder| Mode::ToolBootstrap, + mode: Mode::ToolBootstrap, default: false }); tool_check_step!(CoverageDump { path: "src/tools/coverage-dump", - mode: |_builder| Mode::ToolBootstrap, + mode: Mode::ToolBootstrap, default: false }); @@ -825,23 +817,18 @@ tool_check_step!(CoverageDump { // so this is mainly for people working on compiletest to run locally. tool_check_step!(Compiletest { path: "src/tools/compiletest", - mode: |builder: &Builder<'_>| if builder.config.compiletest_use_stage0_libtest { - Mode::ToolBootstrap - } else { - Mode::ToolStd - }, - allow_features: COMPILETEST_ALLOW_FEATURES, + mode: Mode::ToolBootstrap, default: false, }); tool_check_step!(Linkchecker { path: "src/tools/linkchecker", - mode: |_builder| Mode::ToolBootstrap, + mode: Mode::ToolBootstrap, default: false }); tool_check_step!(BumpStage0 { path: "src/tools/bump-stage0", - mode: |_builder| Mode::ToolBootstrap, + mode: Mode::ToolBootstrap, default: false }); diff --git a/src/bootstrap/src/core/build_steps/clippy.rs b/src/bootstrap/src/core/build_steps/clippy.rs index 2083c675e1f..d5b15d79086 100644 --- a/src/bootstrap/src/core/build_steps/clippy.rs +++ b/src/bootstrap/src/core/build_steps/clippy.rs @@ -564,6 +564,7 @@ impl Step for CI { "clippy::same_item_push".into(), "clippy::single_char_add_str".into(), "clippy::to_string_in_format_args".into(), + "clippy::unconditional_recursion".into(), ], forbid: vec![], }; @@ -591,6 +592,7 @@ impl Step for CI { "clippy::same_item_push".into(), "clippy::single_char_add_str".into(), "clippy::to_string_in_format_args".into(), + "clippy::unconditional_recursion".into(), ], forbid: vec![], }; diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs index 14104d7d1d7..96b4e15433f 100644 --- a/src/bootstrap/src/core/build_steps/compile.rs +++ b/src/bootstrap/src/core/build_steps/compile.rs @@ -895,6 +895,8 @@ impl Step for StartupObjects { fn run(self, builder: &Builder<'_>) -> Vec<(PathBuf, DependencyType)> { let for_compiler = self.compiler; let target = self.target; + // Even though no longer necessary on x86_64, they are kept for now to + // avoid potential issues in downstream crates. if !target.is_windows_gnu() { return vec![]; } @@ -1219,7 +1221,7 @@ pub fn rustc_cargo( // us a faster startup time. However GNU ld < 2.40 will error if we try to link a shared object // with direct references to protected symbols, so for now we only use protected symbols if // linking with LLD is enabled. - if builder.build.config.lld_mode.is_used() { + if builder.build.config.bootstrap_override_lld.is_used() { cargo.rustflag("-Zdefault-visibility=protected"); } @@ -1256,7 +1258,7 @@ pub fn rustc_cargo( // is already on by default in MSVC optimized builds, which is interpreted as --icf=all: // https://github.com/llvm/llvm-project/blob/3329cec2f79185bafd678f310fafadba2a8c76d2/lld/COFF/Driver.cpp#L1746 // https://github.com/rust-lang/rust/blob/f22819bcce4abaff7d1246a56eec493418f9f4ee/compiler/rustc_codegen_ssa/src/back/linker.rs#L827 - if builder.config.lld_mode.is_used() && !build_compiler.host.is_msvc() { + if builder.config.bootstrap_override_lld.is_used() && !build_compiler.host.is_msvc() { cargo.rustflag("-Clink-args=-Wl,--icf=all"); } @@ -1832,8 +1834,9 @@ impl Step for Sysroot { let sysroot = sysroot_dir(compiler.stage); trace!(stage = ?compiler.stage, ?sysroot); - builder - .verbose(|| println!("Removing sysroot {} to avoid caching bugs", sysroot.display())); + builder.do_if_verbose(|| { + println!("Removing sysroot {} to avoid caching bugs", sysroot.display()) + }); let _ = fs::remove_dir_all(&sysroot); t!(fs::create_dir_all(&sysroot)); @@ -1902,12 +1905,7 @@ impl Step for Sysroot { if !path.parent().is_none_or(|p| p.ends_with(&suffix)) { return true; } - if !filtered_files.iter().all(|f| f != path.file_name().unwrap()) { - builder.verbose_than(1, || println!("ignoring {}", path.display())); - false - } else { - true - } + filtered_files.iter().all(|f| f != path.file_name().unwrap()) }); } @@ -2596,7 +2594,7 @@ pub fn stream_cargo( cmd.arg(arg); } - builder.verbose(|| println!("running: {cmd:?}")); + builder.do_if_verbose(|| println!("running: {cmd:?}")); let streaming_command = cmd.stream_capture_stdout(&builder.config.exec_ctx); diff --git a/src/bootstrap/src/core/build_steps/dist.rs b/src/bootstrap/src/core/build_steps/dist.rs index 99a1062109a..b79d2cb413d 100644 --- a/src/bootstrap/src/core/build_steps/dist.rs +++ b/src/bootstrap/src/core/build_steps/dist.rs @@ -2304,7 +2304,7 @@ fn maybe_install_llvm( let mut cmd = command(host_llvm_config); cmd.cached(); cmd.arg("--libfiles"); - builder.verbose(|| println!("running {cmd:?}")); + builder.do_if_verbose(|| println!("running {cmd:?}")); let files = cmd.run_capture_stdout(builder).stdout(); let build_llvm_out = &builder.llvm_out(builder.config.host_target); let target_llvm_out = &builder.llvm_out(target); diff --git a/src/bootstrap/src/core/build_steps/doc.rs b/src/bootstrap/src/core/build_steps/doc.rs index 7865b685659..37462c63f1b 100644 --- a/src/bootstrap/src/core/build_steps/doc.rs +++ b/src/bootstrap/src/core/build_steps/doc.rs @@ -1024,12 +1024,9 @@ macro_rules! tool_doc { run.builder.ensure(Rustc::from_build_compiler(run.builder, compilers.build_compiler(), target)); compilers.build_compiler() } - Mode::ToolBootstrap => { - // bootstrap/host tools should be documented with the stage 0 compiler - prepare_doc_compiler(run.builder, run.builder.host_target, 1) - } Mode::ToolTarget => { - // target tools should be documented with the in-tree compiler + // when shipping multiple docs together in one folder, + // they all need to use the same rustdoc version prepare_doc_compiler(run.builder, run.builder.host_target, run.builder.top_stage) } _ => { @@ -1132,7 +1129,11 @@ macro_rules! tool_doc { tool_doc!( BuildHelper, "src/build_helper", - mode = Mode::ToolBootstrap, + // ideally, this would use ToolBootstrap, + // but we distribute these docs together in the same folder + // as a bunch of stage1 tools, and you can't mix rustdoc versions + // because that breaks cross-crate data (particularly search) + mode = Mode::ToolTarget, is_library = true, crates = ["build_helper"] ); @@ -1175,25 +1176,25 @@ tool_doc!( // "specialization" feature in its build script when it detects a nightly toolchain. allow_features: "specialization" ); -tool_doc!(Tidy, "src/tools/tidy", mode = Mode::ToolBootstrap, crates = ["tidy"]); +tool_doc!(Tidy, "src/tools/tidy", mode = Mode::ToolTarget, crates = ["tidy"]); tool_doc!( Bootstrap, "src/bootstrap", - mode = Mode::ToolBootstrap, + mode = Mode::ToolTarget, is_library = true, crates = ["bootstrap"] ); tool_doc!( RunMakeSupport, "src/tools/run-make-support", - mode = Mode::ToolBootstrap, + mode = Mode::ToolTarget, is_library = true, crates = ["run_make_support"] ); tool_doc!( Compiletest, "src/tools/compiletest", - mode = Mode::ToolBootstrap, + mode = Mode::ToolTarget, is_library = true, crates = ["compiletest"] ); diff --git a/src/bootstrap/src/core/build_steps/gcc.rs b/src/bootstrap/src/core/build_steps/gcc.rs index 717dea37e9e..17ab8c4e2f4 100644 --- a/src/bootstrap/src/core/build_steps/gcc.rs +++ b/src/bootstrap/src/core/build_steps/gcc.rs @@ -128,7 +128,7 @@ fn try_download_gcc(builder: &Builder<'_>, target: TargetSelection) -> Option<Pa &builder.config, builder.config.rust_info.is_managed_git_subrepository(), ); - builder.verbose(|| { + builder.do_if_verbose(|| { eprintln!("GCC freshness: {source:?}"); }); match source { diff --git a/src/bootstrap/src/core/build_steps/test.rs b/src/bootstrap/src/core/build_steps/test.rs index e7f5879b5f5..00aea8feab7 100644 --- a/src/bootstrap/src/core/build_steps/test.rs +++ b/src/bootstrap/src/core/build_steps/test.rs @@ -18,8 +18,8 @@ use crate::core::build_steps::llvm::get_llvm_version; use crate::core::build_steps::run::get_completion_paths; use crate::core::build_steps::synthetic_targets::MirOptPanicAbortSyntheticTarget; use crate::core::build_steps::tool::{ - self, COMPILETEST_ALLOW_FEATURES, RustcPrivateCompilers, SourceType, - TEST_FLOAT_PARSE_ALLOW_FEATURES, Tool, ToolTargetBuildMode, get_tool_target_compiler, + self, RustcPrivateCompilers, SourceType, TEST_FLOAT_PARSE_ALLOW_FEATURES, Tool, + ToolTargetBuildMode, get_tool_target_compiler, }; use crate::core::build_steps::toolstate::ToolState; use crate::core::build_steps::{compile, dist, llvm}; @@ -36,7 +36,7 @@ use crate::utils::helpers::{ linker_args, linker_flags, t, target_supports_cranelift_backend, up_to_date, }; use crate::utils::render_tests::{add_flags_and_try_run_tests, try_run_tests}; -use crate::{CLang, CodegenBackendKind, DocTests, GitRepo, Mode, PathSet, debug, envify}; +use crate::{CLang, CodegenBackendKind, DocTests, GitRepo, Mode, PathSet, envify}; const ADB_TEST_DIR: &str = "/data/local/tmp/work"; @@ -582,11 +582,11 @@ impl Miri { // We re-use the `cargo` from above. cargo.arg("--print-sysroot"); - builder.verbose(|| println!("running: {cargo:?}")); + builder.do_if_verbose(|| println!("running: {cargo:?}")); let stdout = cargo.run_capture_stdout(builder).stdout(); // Output is "<sysroot>\n". let sysroot = stdout.trim_end(); - builder.verbose(|| println!("`cargo miri setup --print-sysroot` said: {sysroot:?}")); + builder.do_if_verbose(|| println!("`cargo miri setup --print-sysroot` said: {sysroot:?}")); PathBuf::from(sysroot) } } @@ -786,26 +786,26 @@ impl Step for CompiletestTest { fn run(self, builder: &Builder<'_>) { let host = self.host; + // Now that compiletest uses only stable Rust, building it always uses + // the stage 0 compiler. However, some of its unit tests need to be able + // to query information from an in-tree compiler, so we treat `--stage` + // as selecting the stage of that secondary compiler. + if builder.top_stage == 0 && !builder.config.compiletest_allow_stage0 { eprintln!("\ -ERROR: `--stage 0` runs compiletest self-tests against the stage0 (precompiled) compiler, not the in-tree compiler, and will almost always cause tests to fail +ERROR: `--stage 0` causes compiletest to query information from the stage0 (precompiled) compiler, instead of the in-tree compiler, which can cause some tests to fail inappropriately NOTE: if you're sure you want to do this, please open an issue as to why. In the meantime, you can override this with `--set build.compiletest-allow-stage0=true`." ); crate::exit!(1); } - let compiler = builder.compiler(builder.top_stage, host); - debug!(?compiler); + let bootstrap_compiler = builder.compiler(0, host); + let staged_compiler = builder.compiler(builder.top_stage, host); - // We need `ToolStd` for the locally-built sysroot because - // compiletest uses unstable features of the `test` crate. - builder.std(compiler, host); let mut cargo = tool::prepare_tool_cargo( builder, - compiler, - // compiletest uses libtest internals; make it use the in-tree std to make sure it never - // breaks when std sources change. - Mode::ToolStd, + bootstrap_compiler, + Mode::ToolBootstrap, host, Kind::Test, "src/tools/compiletest", @@ -816,9 +816,8 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the // Used for `compiletest` self-tests to have the path to the *staged* compiler. Getting this // right is important, as `compiletest` is intended to only support one target spec JSON // format, namely that of the staged compiler. - cargo.env("TEST_RUSTC", builder.rustc(compiler)); + cargo.env("TEST_RUSTC", builder.rustc(staged_compiler)); - cargo.allow_features(COMPILETEST_ALLOW_FEATURES); run_cargo_test(cargo, &[], &[], "compiletest self test", host, builder); } } @@ -2675,7 +2674,7 @@ fn markdown_test(builder: &Builder<'_>, compiler: Compiler, markdown: &Path) -> return true; } - builder.verbose(|| println!("doc tests for: {}", markdown.display())); + builder.do_if_verbose(|| println!("doc tests for: {}", markdown.display())); let mut cmd = builder.rustdoc_cmd(compiler); builder.add_rust_test_threads(&mut cmd); // allow for unstable options such as new editions diff --git a/src/bootstrap/src/core/build_steps/tool.rs b/src/bootstrap/src/core/build_steps/tool.rs index 4f096d50ea5..819e903020c 100644 --- a/src/bootstrap/src/core/build_steps/tool.rs +++ b/src/bootstrap/src/core/build_steps/tool.rs @@ -380,7 +380,6 @@ macro_rules! bootstrap_tool { ($( $name:ident, $path:expr, $tool_name:expr $(,is_external_tool = $external:expr)* - $(,is_unstable_tool = $unstable:expr)* $(,allow_features = $allow_features:expr)? $(,submodules = $submodules:expr)? $(,artifact_kind = $artifact_kind:expr)? @@ -438,19 +437,11 @@ macro_rules! bootstrap_tool { } )* - let is_unstable = false $(|| $unstable)*; - let compiletest_wants_stage0 = $tool_name == "compiletest" && builder.config.compiletest_use_stage0_libtest; - builder.ensure(ToolBuild { build_compiler: self.compiler, target: self.target, tool: $tool_name, - mode: if is_unstable && !compiletest_wants_stage0 { - // use in-tree libraries for unstable features - Mode::ToolStd - } else { - Mode::ToolBootstrap - }, + mode: Mode::ToolBootstrap, path: $path, source_type: if false $(|| $external)* { SourceType::Submodule @@ -483,8 +474,6 @@ macro_rules! bootstrap_tool { } } -pub(crate) const COMPILETEST_ALLOW_FEATURES: &str = "internal_output_capture"; - bootstrap_tool!( // This is marked as an external tool because it includes dependencies // from submodules. Trying to keep the lints in sync between all the repos @@ -495,7 +484,7 @@ bootstrap_tool!( Tidy, "src/tools/tidy", "tidy"; Linkchecker, "src/tools/linkchecker", "linkchecker"; CargoTest, "src/tools/cargotest", "cargotest"; - Compiletest, "src/tools/compiletest", "compiletest", is_unstable_tool = true, allow_features = COMPILETEST_ALLOW_FEATURES; + Compiletest, "src/tools/compiletest", "compiletest"; BuildManifest, "src/tools/build-manifest", "build-manifest"; RemoteTestClient, "src/tools/remote-test-client", "remote-test-client"; RustInstaller, "src/tools/rust-installer", "rust-installer"; @@ -509,8 +498,7 @@ bootstrap_tool!( CollectLicenseMetadata, "src/tools/collect-license-metadata", "collect-license-metadata"; GenerateCopyright, "src/tools/generate-copyright", "generate-copyright"; GenerateWindowsSys, "src/tools/generate-windows-sys", "generate-windows-sys"; - // rustdoc-gui-test has a crate dependency on compiletest, so it needs the same unstable features. - RustdocGUITest, "src/tools/rustdoc-gui-test", "rustdoc-gui-test", is_unstable_tool = true, allow_features = COMPILETEST_ALLOW_FEATURES; + RustdocGUITest, "src/tools/rustdoc-gui-test", "rustdoc-gui-test"; CoverageDump, "src/tools/coverage-dump", "coverage-dump"; UnicodeTableGenerator, "src/tools/unicode-table-generator", "unicode-table-generator"; FeaturesStatusDump, "src/tools/features-status-dump", "features-status-dump"; diff --git a/src/bootstrap/src/core/builder/cargo.rs b/src/bootstrap/src/core/builder/cargo.rs index ee2bb710674..a404aec5120 100644 --- a/src/bootstrap/src/core/builder/cargo.rs +++ b/src/bootstrap/src/core/builder/cargo.rs @@ -10,7 +10,7 @@ use crate::core::config::flags::Color; use crate::utils::build_stamp; use crate::utils::helpers::{self, LldThreads, check_cfg_arg, linker_args, linker_flags}; use crate::{ - BootstrapCommand, CLang, Compiler, Config, DocTests, DryRun, EXTRA_CHECK_CFGS, GitRepo, Mode, + BootstrapCommand, CLang, Compiler, Config, DryRun, EXTRA_CHECK_CFGS, GitRepo, Mode, RemapScheme, TargetSelection, command, prepare_behaviour_dump_dir, t, }; @@ -851,8 +851,6 @@ impl Builder<'_> { rustflags.arg("-Zmacro-backtrace"); - let want_rustdoc = self.doc_tests != DocTests::No; - // Clear the output directory if the real rustc we're using has changed; // Cargo cannot detect this as it thinks rustc is bootstrap/debug/rustc. // @@ -881,7 +879,8 @@ impl Builder<'_> { .env("RUSTC_REAL", self.rustc(compiler)) .env("RUSTC_STAGE", build_compiler_stage.to_string()) .env("RUSTC_SYSROOT", sysroot) - .env("RUSTC_LIBDIR", libdir) + .env("RUSTC_LIBDIR", &libdir) + .env("RUSTDOC_LIBDIR", libdir) .env("RUSTDOC", self.bootstrap_out.join("rustdoc")) .env("RUSTDOC_REAL", rustdoc_path) .env("RUSTC_ERROR_METADATA_DST", self.extended_error_dir()); @@ -919,11 +918,6 @@ impl Builder<'_> { rustflags.arg(&format!("-Zstack-protector={stack_protector}")); } - if !matches!(cmd_kind, Kind::Build | Kind::Check | Kind::Clippy | Kind::Fix) && want_rustdoc - { - cargo.env("RUSTDOC_LIBDIR", self.rustc_libdir(compiler)); - } - let debuginfo_level = match mode { Mode::Rustc | Mode::Codegen => self.config.rust_debuginfo_level_rustc, Mode::Std => self.config.rust_debuginfo_level_std, @@ -1139,7 +1133,7 @@ impl Builder<'_> { cargo.env("RUSTC_BACKTRACE_ON_ICE", "1"); } - if self.is_verbose_than(1) { + if self.verbosity >= 2 { // This provides very useful logs especially when debugging build cache-related stuff. cargo.env("CARGO_LOG", "cargo::core::compiler::fingerprint=info"); } diff --git a/src/bootstrap/src/core/builder/mod.rs b/src/bootstrap/src/core/builder/mod.rs index 8226b4325b6..006dea4b98d 100644 --- a/src/bootstrap/src/core/builder/mod.rs +++ b/src/bootstrap/src/core/builder/mod.rs @@ -545,7 +545,7 @@ impl StepDescription { if !builder.config.skip.is_empty() && !matches!(builder.config.get_dry_run(), DryRun::SelfCheck) { - builder.verbose(|| { + builder.do_if_verbose(|| { println!( "{:?} not skipped for {:?} -- not in {:?}", pathset, self.name, builder.config.skip @@ -947,7 +947,7 @@ impl Step for Libdir { // Sysroot`). if !builder.download_rustc() { let sysroot_target_libdir = sysroot.join(self.target).join("lib"); - builder.verbose(|| { + builder.do_if_verbose(|| { eprintln!( "Removing sysroot {} to avoid caching bugs", sysroot_target_libdir.display() @@ -1221,6 +1221,8 @@ impl<'a> Builder<'a> { install::Miri, install::LlvmTools, install::Src, + install::RustcCodegenCranelift, + install::LlvmBitcodeLinker ), Kind::Run => describe!( run::BuildManifest, diff --git a/src/bootstrap/src/core/builder/tests.rs b/src/bootstrap/src/core/builder/tests.rs index 229adf71459..3306435758b 100644 --- a/src/bootstrap/src/core/builder/tests.rs +++ b/src/bootstrap/src/core/builder/tests.rs @@ -22,13 +22,7 @@ fn configure(cmd: &str, host: &[&str], target: &[&str]) -> Config { } fn configure_with_args(cmd: &[&str], host: &[&str], target: &[&str]) -> Config { - TestCtx::new() - .config(cmd[0]) - .args(&cmd[1..]) - .hosts(host) - .targets(target) - .args(&["--build", TEST_TRIPLE_1]) - .create_config() + TestCtx::new().config(cmd[0]).args(&cmd[1..]).hosts(host).targets(target).create_config() } fn first<A, B>(v: Vec<(A, B)>) -> Vec<A> { @@ -218,18 +212,17 @@ fn prepare_rustc_checkout(ctx: &mut GitCtx) { /// Parses a Config directory from `path`, with the given value of `download_rustc`. fn parse_config_download_rustc_at(path: &Path, download_rustc: &str, ci: bool) -> Config { - Config::parse_inner( - Flags::parse(&[ - "build".to_owned(), - "--dry-run".to_owned(), - "--ci".to_owned(), - if ci { "true" } else { "false" }.to_owned(), - format!("--set=rust.download-rustc='{download_rustc}'"), - "--src".to_owned(), - path.to_str().unwrap().to_owned(), - ]), - |&_| Ok(Default::default()), - ) + TestCtx::new() + .config("build") + .args(&[ + "--ci", + if ci { "true" } else { "false" }, + format!("--set=rust.download-rustc='{download_rustc}'").as_str(), + "--src", + path.to_str().unwrap(), + ]) + .no_override_download_ci_llvm() + .create_config() } mod dist { @@ -237,6 +230,7 @@ mod dist { use super::{Config, TEST_TRIPLE_1, TEST_TRIPLE_2, TEST_TRIPLE_3, first, run_build}; use crate::Flags; + use crate::core::builder::tests::host_target; use crate::core::builder::*; fn configure(host: &[&str], target: &[&str]) -> Config { @@ -245,11 +239,11 @@ mod dist { #[test] fn llvm_out_behaviour() { - let mut config = configure(&[TEST_TRIPLE_1], &[TEST_TRIPLE_2]); + let mut config = configure(&[], &[TEST_TRIPLE_2]); config.llvm_from_ci = true; let build = Build::new(config.clone()); - let target = TargetSelection::from_user(TEST_TRIPLE_1); + let target = TargetSelection::from_user(&host_target()); assert!(build.llvm_out(target).ends_with("ci-llvm")); let target = TargetSelection::from_user(TEST_TRIPLE_2); assert!(build.llvm_out(target).ends_with("llvm")); @@ -314,7 +308,7 @@ mod sysroot_target_dirs { /// cg_gcc tests instead. #[test] fn test_test_compiler() { - let config = configure_with_args(&["test", "compiler"], &[TEST_TRIPLE_1], &[TEST_TRIPLE_1]); + let config = configure_with_args(&["test", "compiler"], &[&host_target()], &[TEST_TRIPLE_1]); let cache = run_build(&config.paths.clone(), config); let compiler = cache.contains::<test::CrateLibrustc>(); @@ -347,7 +341,7 @@ fn test_test_coverage() { // Print each test case so that if one fails, the most recently printed // case is the one that failed. println!("Testing case: {cmd:?}"); - let config = configure_with_args(cmd, &[TEST_TRIPLE_1], &[TEST_TRIPLE_1]); + let config = configure_with_args(cmd, &[], &[TEST_TRIPLE_1]); let mut cache = run_build(&config.paths.clone(), config); let modes = @@ -359,14 +353,7 @@ fn test_test_coverage() { #[test] fn test_prebuilt_llvm_config_path_resolution() { fn configure(config: &str) -> Config { - Config::parse_inner( - Flags::parse(&[ - "build".to_string(), - "--dry-run".to_string(), - "--config=/does/not/exist".to_string(), - ]), - |&_| toml::from_str(&config), - ) + TestCtx::new().config("build").with_default_toml_config(config).create_config() } // Removes Windows disk prefix if present @@ -1171,13 +1158,12 @@ mod snapshot { [doc] embedded-book (book) <host> [doc] edition-guide (book) <host> [doc] style-guide (book) <host> - [build] rustdoc 0 <host> - [doc] rustc 0 <host> -> Tidy 1 <host> - [doc] rustc 0 <host> -> Bootstrap 1 <host> + [doc] rustc 1 <host> -> Tidy 2 <host> + [doc] rustc 1 <host> -> Bootstrap 2 <host> [doc] rustc 1 <host> -> releases 2 <host> - [doc] rustc 0 <host> -> RunMakeSupport 1 <host> - [doc] rustc 0 <host> -> BuildHelper 1 <host> - [doc] rustc 0 <host> -> Compiletest 1 <host> + [doc] rustc 1 <host> -> RunMakeSupport 2 <host> + [doc] rustc 1 <host> -> BuildHelper 2 <host> + [doc] rustc 1 <host> -> Compiletest 2 <host> [build] rustc 0 <host> -> RustInstaller 1 <host> " ); @@ -2018,21 +2004,6 @@ mod snapshot { } #[test] - fn check_compiletest_stage1_libtest() { - let ctx = TestCtx::new(); - insta::assert_snapshot!( - ctx.config("check") - .path("compiletest") - .args(&["--set", "build.compiletest-use-stage0-libtest=false"]) - .render_steps(), @r" - [build] llvm <host> - [build] rustc 0 <host> -> rustc 1 <host> - [build] rustc 1 <host> -> std 1 <host> - [check] rustc 1 <host> -> Compiletest 2 <host> - "); - } - - #[test] fn check_codegen() { let ctx = TestCtx::new(); insta::assert_snapshot!( @@ -2159,6 +2130,17 @@ mod snapshot { } #[test] + fn test_compiletest_self_test() { + let ctx = TestCtx::new(); + let steps = ctx.config("test").arg("compiletest").render_steps(); + insta::assert_snapshot!(steps, @r" + [build] llvm <host> + [build] rustc 0 <host> -> rustc 1 <host> + [build] rustdoc 0 <host> + "); + } + + #[test] fn test_compiletest_suites_stage1() { let ctx = TestCtx::new(); insta::assert_snapshot!( @@ -2703,8 +2685,11 @@ mod snapshot { .path("src/tools/compiletest") .stage(2) .render_steps(), @r" - [build] rustdoc 0 <host> - [doc] rustc 0 <host> -> Compiletest 1 <host> + [build] llvm <host> + [build] rustc 0 <host> -> rustc 1 <host> + [build] rustc 1 <host> -> std 1 <host> + [build] rustdoc 1 <host> + [doc] rustc 1 <host> -> Compiletest 2 <host> "); } @@ -2857,60 +2842,69 @@ mod snapshot { // Using backslashes fails with `--set` "--set", &format!("install.prefix={}", ctx.dir().display()).replace("\\", "/"), "--set", &format!("install.sysconfdir={}", ctx.dir().display()).replace("\\", "/"), - "--set", "build.extended=true" + "--set", "build.extended=true", + // For Cranelift to be disted + "--build", "x86_64-unknown-linux-gnu", + "--host", "x86_64-unknown-linux-gnu" ]) - .render_steps(), @r" - [build] llvm <host> - [build] rustc 0 <host> -> rustc 1 <host> - [build] rustc 0 <host> -> WasmComponentLd 1 <host> - [build] rustc 0 <host> -> UnstableBookGen 1 <host> - [build] rustc 0 <host> -> Rustbook 1 <host> - [doc] unstable-book (book) <host> - [build] rustc 1 <host> -> std 1 <host> - [doc] book (book) <host> - [doc] book/first-edition (book) <host> - [doc] book/second-edition (book) <host> - [doc] book/2018-edition (book) <host> - [build] rustdoc 1 <host> - [doc] rustc 1 <host> -> standalone 2 <host> - [doc] rustc 1 <host> -> std 1 <host> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind] - [build] rustc 1 <host> -> rustc 2 <host> - [build] rustc 1 <host> -> WasmComponentLd 2 <host> - [build] rustc 1 <host> -> error-index 2 <host> - [doc] rustc 1 <host> -> error-index 2 <host> - [doc] nomicon (book) <host> - [doc] rustc 1 <host> -> reference (book) 2 <host> - [doc] rustdoc (book) <host> - [doc] rust-by-example (book) <host> - [build] rustc 0 <host> -> LintDocs 1 <host> - [doc] rustc (book) <host> - [doc] cargo (book) <host> - [doc] clippy (book) <host> - [doc] embedded-book (book) <host> - [doc] edition-guide (book) <host> - [doc] style-guide (book) <host> - [doc] rustc 1 <host> -> releases 2 <host> - [build] rustc 0 <host> -> RustInstaller 1 <host> - [dist] docs <host> - [dist] rustc 1 <host> -> std 1 <host> - [build] rustdoc 2 <host> - [build] rustc 1 <host> -> rust-analyzer-proc-macro-srv 2 <host> - [build] rustc 0 <host> -> GenerateCopyright 1 <host> - [dist] rustc <host> - [build] rustc 1 <host> -> cargo 2 <host> - [dist] rustc 1 <host> -> cargo 2 <host> - [build] rustc 1 <host> -> rust-analyzer 2 <host> - [dist] rustc 1 <host> -> rust-analyzer 2 <host> - [build] rustc 1 <host> -> rustfmt 2 <host> - [build] rustc 1 <host> -> cargo-fmt 2 <host> - [dist] rustc 1 <host> -> rustfmt 2 <host> - [build] rustc 1 <host> -> clippy-driver 2 <host> - [build] rustc 1 <host> -> cargo-clippy 2 <host> - [dist] rustc 1 <host> -> clippy 2 <host> - [build] rustc 1 <host> -> miri 2 <host> - [build] rustc 1 <host> -> cargo-miri 2 <host> - [dist] rustc 1 <host> -> miri 2 <host> + .get_steps() + .render_with(RenderConfig { + normalize_host: false + }), @r" + [build] llvm <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> rustc 1 <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> WasmComponentLd 1 <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> UnstableBookGen 1 <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> Rustbook 1 <x86_64-unknown-linux-gnu> + [doc] unstable-book (book) <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> std 1 <x86_64-unknown-linux-gnu> + [doc] book (book) <x86_64-unknown-linux-gnu> + [doc] book/first-edition (book) <x86_64-unknown-linux-gnu> + [doc] book/second-edition (book) <x86_64-unknown-linux-gnu> + [doc] book/2018-edition (book) <x86_64-unknown-linux-gnu> + [build] rustdoc 1 <x86_64-unknown-linux-gnu> + [doc] rustc 1 <x86_64-unknown-linux-gnu> -> standalone 2 <x86_64-unknown-linux-gnu> + [doc] rustc 1 <x86_64-unknown-linux-gnu> -> std 1 <x86_64-unknown-linux-gnu> crates=[alloc,compiler_builtins,core,panic_abort,panic_unwind,proc_macro,rustc-std-workspace-core,std,std_detect,sysroot,test,unwind] + [build] rustc 1 <x86_64-unknown-linux-gnu> -> rustc 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> WasmComponentLd 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> error-index 2 <x86_64-unknown-linux-gnu> + [doc] rustc 1 <x86_64-unknown-linux-gnu> -> error-index 2 <x86_64-unknown-linux-gnu> + [doc] nomicon (book) <x86_64-unknown-linux-gnu> + [doc] rustc 1 <x86_64-unknown-linux-gnu> -> reference (book) 2 <x86_64-unknown-linux-gnu> + [doc] rustdoc (book) <x86_64-unknown-linux-gnu> + [doc] rust-by-example (book) <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> LintDocs 1 <x86_64-unknown-linux-gnu> + [doc] rustc (book) <x86_64-unknown-linux-gnu> + [doc] cargo (book) <x86_64-unknown-linux-gnu> + [doc] clippy (book) <x86_64-unknown-linux-gnu> + [doc] embedded-book (book) <x86_64-unknown-linux-gnu> + [doc] edition-guide (book) <x86_64-unknown-linux-gnu> + [doc] style-guide (book) <x86_64-unknown-linux-gnu> + [doc] rustc 1 <x86_64-unknown-linux-gnu> -> releases 2 <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> RustInstaller 1 <x86_64-unknown-linux-gnu> + [dist] docs <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> std 1 <x86_64-unknown-linux-gnu> + [build] rustdoc 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> rust-analyzer-proc-macro-srv 2 <x86_64-unknown-linux-gnu> + [build] rustc 0 <x86_64-unknown-linux-gnu> -> GenerateCopyright 1 <x86_64-unknown-linux-gnu> + [dist] rustc <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> cargo 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> cargo 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> rust-analyzer 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> rust-analyzer 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> rustfmt 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> cargo-fmt 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> rustfmt 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> clippy-driver 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> cargo-clippy 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> clippy 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> miri 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> cargo-miri 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> miri 2 <x86_64-unknown-linux-gnu> [dist] src <> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> rustc_codegen_cranelift 2 <x86_64-unknown-linux-gnu> + [dist] rustc 1 <x86_64-unknown-linux-gnu> -> rustc_codegen_cranelift 2 <x86_64-unknown-linux-gnu> + [build] rustc 1 <x86_64-unknown-linux-gnu> -> LlvmBitcodeLinker 2 <x86_64-unknown-linux-gnu> "); } diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs index dd2d5a1fd53..1fcc1174e85 100644 --- a/src/bootstrap/src/core/config/config.rs +++ b/src/bootstrap/src/core/config/config.rs @@ -41,7 +41,7 @@ use crate::core::config::toml::gcc::Gcc; use crate::core::config::toml::install::Install; use crate::core::config::toml::llvm::Llvm; use crate::core::config::toml::rust::{ - LldMode, Rust, RustOptimize, check_incompatible_options_for_ci_rustc, + BootstrapOverrideLld, Rust, RustOptimize, check_incompatible_options_for_ci_rustc, default_lld_opt_in_targets, parse_codegen_backends, }; use crate::core::config::toml::target::Target; @@ -174,7 +174,7 @@ pub struct Config { pub llvm_from_ci: bool, pub llvm_build_config: HashMap<String, String>, - pub lld_mode: LldMode, + pub bootstrap_override_lld: BootstrapOverrideLld, pub lld_enabled: bool, pub llvm_tools_enabled: bool, pub llvm_bitcode_linker_enabled: bool, @@ -310,9 +310,6 @@ pub struct Config { /// sources. pub compiletest_allow_stage0: bool, - /// Whether to use the precompiled stage0 libtest with compiletest. - pub compiletest_use_stage0_libtest: bool, - /// Default value for `--extra-checks` pub tidy_extra_checks: Option<String>, pub is_running_on_ci: bool, @@ -414,14 +411,28 @@ impl Config { // Set config values based on flags. let mut exec_ctx = ExecutionContext::new(flags_verbose, flags_cmd.fail_fast()); exec_ctx.set_dry_run(if flags_dry_run { DryRun::UserSelected } else { DryRun::Disabled }); - let mut src = { + + let default_src_dir = { let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR")); // Undo `src/bootstrap` manifest_dir.parent().unwrap().parent().unwrap().to_owned() }; + let src = if let Some(s) = compute_src_directory(flags_src, &exec_ctx) { + s + } else { + default_src_dir.clone() + }; - if let Some(src_) = compute_src_directory(flags_src, &exec_ctx) { - src = src_; + #[cfg(test)] + { + if let Some(config_path) = flags_config.as_ref() { + assert!( + !config_path.starts_with(&src), + "Path {config_path:?} should not be inside or equal to src dir {src:?}" + ); + } else { + panic!("During test the config should be explicitly added"); + } } // Now load the TOML config, as soon as possible @@ -483,7 +494,8 @@ impl Config { optimized_compiler_builtins: build_optimized_compiler_builtins, jobs: build_jobs, compiletest_diff_tool: build_compiletest_diff_tool, - compiletest_use_stage0_libtest: build_compiletest_use_stage0_libtest, + // No longer has any effect; kept (for now) to avoid breaking people's configs. + compiletest_use_stage0_libtest: _, tidy_extra_checks: build_tidy_extra_checks, ccache: build_ccache, exclude: build_exclude, @@ -553,7 +565,8 @@ impl Config { frame_pointers: rust_frame_pointers, stack_protector: rust_stack_protector, strip: rust_strip, - lld_mode: rust_lld_mode, + bootstrap_override_lld: rust_bootstrap_override_lld, + bootstrap_override_lld_legacy: rust_bootstrap_override_lld_legacy, std_features: rust_std_features, break_on_ice: rust_break_on_ice, } = toml.rust.unwrap_or_default(); @@ -601,6 +614,15 @@ impl Config { let Gcc { download_ci_gcc: gcc_download_ci_gcc } = toml.gcc.unwrap_or_default(); + if rust_bootstrap_override_lld.is_some() && rust_bootstrap_override_lld_legacy.is_some() { + panic!( + "Cannot use both `rust.use-lld` and `rust.bootstrap-override-lld`. Please use only `rust.bootstrap-override-lld`" + ); + } + + let bootstrap_override_lld = + rust_bootstrap_override_lld.or(rust_bootstrap_override_lld_legacy).unwrap_or_default(); + if rust_optimize.as_ref().is_some_and(|v| matches!(v, RustOptimize::Bool(false))) { eprintln!( "WARNING: setting `optimize` to `false` is known to cause errors and \ @@ -630,19 +652,13 @@ impl Config { let llvm_assertions = llvm_assertions.unwrap_or(false); let mut target_config = HashMap::new(); let mut channel = "dev".to_string(); - let out = flags_build_dir.or(build_build_dir.map(PathBuf::from)).unwrap_or_else(|| { - if cfg!(test) { - // Use the build directory of the original x.py invocation, so that we can set `initial_rustc` properly. - Path::new( - &env::var_os("CARGO_TARGET_DIR").expect("cargo test directly is not supported"), - ) - .parent() - .unwrap() - .to_path_buf() - } else { - PathBuf::from("build") - } - }); + + let out = flags_build_dir.or_else(|| build_build_dir.map(PathBuf::from)); + let out = if cfg!(test) { + out.expect("--build-dir has to be specified in tests") + } else { + out.unwrap_or_else(|| PathBuf::from("build")) + }; // NOTE: Bootstrap spawns various commands with different working directories. // To avoid writing to random places on the file system, `config.out` needs to be an absolute path. @@ -653,6 +669,10 @@ impl Config { out }; + let default_stage0_rustc_path = |dir: &Path| { + dir.join(host_target).join("stage0").join("bin").join(exe("rustc", host_target)) + }; + if cfg!(test) { // When configuring bootstrap for tests, make sure to set the rustc and Cargo to the // same ones used to call the tests (if custom ones are not defined in the toml). If we @@ -661,6 +681,22 @@ impl Config { // Cargo in their bootstrap.toml. build_rustc = build_rustc.take().or(std::env::var_os("RUSTC").map(|p| p.into())); build_cargo = build_cargo.take().or(std::env::var_os("CARGO").map(|p| p.into())); + + // If we are running only `cargo test` (and not `x test bootstrap`), which is useful + // e.g. for debugging bootstrap itself, then we won't have RUSTC and CARGO set to the + // proper paths. + // We thus "guess" that the build directory is located at <src>/build, and try to load + // rustc and cargo from there + let is_test_outside_x = std::env::var("CARGO_TARGET_DIR").is_err(); + if is_test_outside_x && build_rustc.is_none() { + let stage0_rustc = default_stage0_rustc_path(&default_src_dir.join("build")); + assert!( + stage0_rustc.exists(), + "Trying to run cargo test without having a stage0 rustc available in {}", + stage0_rustc.display() + ); + build_rustc = Some(stage0_rustc); + } } if !flags_skip_stage0_validation { @@ -694,7 +730,7 @@ impl Config { let initial_rustc = build_rustc.unwrap_or_else(|| { download_beta_toolchain(&dwn_ctx, &out); - out.join(host_target).join("stage0").join("bin").join(exe("rustc", host_target)) + default_stage0_rustc_path(&out) }); let initial_sysroot = t!(PathBuf::from_str( @@ -932,7 +968,7 @@ impl Config { let initial_rustfmt = build_rustfmt.or_else(|| maybe_download_rustfmt(&dwn_ctx, &out)); - if matches!(rust_lld_mode.unwrap_or_default(), LldMode::SelfContained) + if matches!(bootstrap_override_lld, BootstrapOverrideLld::SelfContained) && !lld_enabled && flags_stage.unwrap_or(0) > 0 { @@ -1144,6 +1180,7 @@ impl Config { backtrace_on_ice: rust_backtrace_on_ice.unwrap_or(false), bindir: install_bindir.map(PathBuf::from).unwrap_or("bin".into()), bootstrap_cache_path: build_bootstrap_cache_path, + bootstrap_override_lld, bypass_bootstrap_lock: flags_bypass_bootstrap_lock, cargo_info, cargo_native_static: build_cargo_native_static.unwrap_or(false), @@ -1158,7 +1195,6 @@ impl Config { compiler_docs: build_compiler_docs.unwrap_or(false), compiletest_allow_stage0: build_compiletest_allow_stage0.unwrap_or(false), compiletest_diff_tool: build_compiletest_diff_tool, - compiletest_use_stage0_libtest: build_compiletest_use_stage0_libtest.unwrap_or(true), config: toml_path, configure_args: build_configure_args.unwrap_or_default(), control_flow_guard: rust_control_flow_guard.unwrap_or(false), @@ -1210,7 +1246,6 @@ impl Config { libdir: install_libdir.map(PathBuf::from), library_docs_private_items: build_library_docs_private_items.unwrap_or(false), lld_enabled, - lld_mode: rust_lld_mode.unwrap_or_default(), lldb: build_lldb.map(PathBuf::from), llvm_allow_old_toolchain: llvm_allow_old_toolchain.unwrap_or(false), llvm_assertions, @@ -1534,11 +1569,11 @@ impl Config { println!("WARNING: CI rustc has some fields that are no longer supported in bootstrap; download-rustc will be disabled."); println!("HELP: Consider rebasing to a newer commit if available."); return None; - }, + } Err(e) => { eprintln!("ERROR: Failed to parse CI rustc bootstrap.toml: {e}"); exit!(2); - }, + } }; let current_config_toml = Self::get_toml(config_path).unwrap(); @@ -1571,8 +1606,8 @@ impl Config { } /// Runs a function if verbosity is greater than 0 - pub fn verbose(&self, f: impl Fn()) { - self.exec_ctx.verbose(f); + pub fn do_if_verbose(&self, f: impl Fn()) { + self.exec_ctx.do_if_verbose(f); } pub fn any_sanitizers_to_build(&self) -> bool { @@ -2061,7 +2096,7 @@ pub fn download_ci_rustc_commit<'a>( // Look for a version to compare to based on the current commit. // Only commits merged by bors will have CI artifacts. let freshness = check_path_modifications_(dwn_ctx, RUSTC_IF_UNCHANGED_ALLOWED_PATHS); - dwn_ctx.exec_ctx.verbose(|| { + dwn_ctx.exec_ctx.do_if_verbose(|| { eprintln!("rustc freshness: {freshness:?}"); }); match freshness { diff --git a/src/bootstrap/src/core/config/mod.rs b/src/bootstrap/src/core/config/mod.rs index 05a5dfc0bc5..007ed4aaba1 100644 --- a/src/bootstrap/src/core/config/mod.rs +++ b/src/bootstrap/src/core/config/mod.rs @@ -37,7 +37,7 @@ use serde_derive::Deserialize; pub use target_selection::TargetSelection; pub use toml::BUILDER_CONFIG_FILENAME; pub use toml::change_id::ChangeId; -pub use toml::rust::LldMode; +pub use toml::rust::BootstrapOverrideLld; pub use toml::target::Target; use crate::Display; @@ -47,11 +47,17 @@ use crate::str::FromStr; #[macro_export] macro_rules! define_config { ($(#[$attr:meta])* struct $name:ident { - $($field:ident: Option<$field_ty:ty> = $field_key:literal,)* + $( + $(#[$field_attr:meta])* + $field:ident: Option<$field_ty:ty> = $field_key:literal, + )* }) => { $(#[$attr])* pub struct $name { - $(pub $field: Option<$field_ty>,)* + $( + $(#[$field_attr])* + pub $field: Option<$field_ty>, + )* } impl Merge for $name { diff --git a/src/bootstrap/src/core/config/tests.rs b/src/bootstrap/src/core/config/tests.rs index e93525fbd09..e19604d4ab1 100644 --- a/src/bootstrap/src/core/config/tests.rs +++ b/src/bootstrap/src/core/config/tests.rs @@ -14,17 +14,17 @@ use super::toml::change_id::ChangeIdWrapper; use super::{Config, RUSTC_IF_UNCHANGED_ALLOWED_PATHS}; use crate::ChangeId; use crate::core::build_steps::clippy::{LintConfig, get_clippy_rules_in_order}; -use crate::core::build_steps::llvm; use crate::core::build_steps::llvm::LLVM_INVALIDATION_PATHS; +use crate::core::build_steps::{llvm, test}; use crate::core::config::toml::TomlConfig; -use crate::core::config::{CompilerBuiltins, LldMode, StringOrBool, Target, TargetSelection}; +use crate::core::config::{ + BootstrapOverrideLld, CompilerBuiltins, StringOrBool, Target, TargetSelection, +}; +use crate::utils::tests::TestCtx; use crate::utils::tests::git::git_test; pub(crate) fn parse(config: &str) -> Config { - Config::parse_inner( - Flags::parse(&["check".to_string(), "--config=/does/not/exist".to_string()]), - |&_| toml::from_str(&config), - ) + TestCtx::new().config("check").with_default_toml_config(config).create_config() } fn get_toml(file: &Path) -> Result<TomlConfig, toml::de::Error> { @@ -32,28 +32,16 @@ fn get_toml(file: &Path) -> Result<TomlConfig, toml::de::Error> { toml::from_str(&contents).and_then(|table: toml::Value| TomlConfig::deserialize(table)) } -/// Helps with debugging by using consistent test-specific directories instead of -/// random temporary directories. -fn prepare_test_specific_dir() -> PathBuf { - let current = std::thread::current(); - // Replace "::" with "_" to make it safe for directory names on Windows systems - let test_path = current.name().unwrap().replace("::", "_"); - - let testdir = parse("").tempdir().join(test_path); - - // clean up any old test files - let _ = fs::remove_dir_all(&testdir); - let _ = fs::create_dir_all(&testdir); - - testdir -} - #[test] fn download_ci_llvm() { - let config = parse("llvm.download-ci-llvm = false"); + let config = TestCtx::new().config("check").create_config(); assert!(!config.llvm_from_ci); - let if_unchanged_config = parse("llvm.download-ci-llvm = \"if-unchanged\""); + // this doesn't make sense, as we are overriding it later. + let if_unchanged_config = TestCtx::new() + .config("check") + .with_default_toml_config("llvm.download-ci-llvm = \"if-unchanged\"") + .create_config(); if if_unchanged_config.llvm_from_ci && if_unchanged_config.is_running_on_ci { let has_changes = if_unchanged_config.has_changes_from_upstream(LLVM_INVALIDATION_PATHS); @@ -64,62 +52,6 @@ fn download_ci_llvm() { } } -// FIXME(onur-ozkan): extend scope of the test -// refs: -// - https://github.com/rust-lang/rust/issues/109120 -// - https://github.com/rust-lang/rust/pull/109162#issuecomment-1496782487 -#[test] -fn detect_src_and_out() { - fn test(cfg: Config, build_dir: Option<&str>) { - // This will bring absolute form of `src/bootstrap` path - let current_dir = std::env::current_dir().unwrap(); - - // get `src` by moving into project root path - let expected_src = current_dir.ancestors().nth(2).unwrap(); - assert_eq!(&cfg.src, expected_src); - - // Sanity check for `src` - let manifest_dir = Path::new(env!("CARGO_MANIFEST_DIR")); - let expected_src = manifest_dir.ancestors().nth(2).unwrap(); - assert_eq!(&cfg.src, expected_src); - - // test if build-dir was manually given in bootstrap.toml - if let Some(custom_build_dir) = build_dir { - assert_eq!(&cfg.out, Path::new(custom_build_dir)); - } - // test the native bootstrap way - else { - // This should bring output path of bootstrap in absolute form - let cargo_target_dir = env::var_os("CARGO_TARGET_DIR").expect( - "CARGO_TARGET_DIR must been provided for the test environment from bootstrap", - ); - - // Move to `build` from `build/bootstrap` - let expected_out = Path::new(&cargo_target_dir).parent().unwrap(); - assert_eq!(&cfg.out, expected_out); - - let args: Vec<String> = env::args().collect(); - - // Another test for `out` as a sanity check - // - // This will bring something similar to: - // `{build-dir}/bootstrap/debug/deps/bootstrap-c7ee91d5661e2804` - // `{build-dir}` can be anywhere, not just in the rust project directory. - let dep = Path::new(args.first().unwrap()); - let expected_out = dep.ancestors().nth(5).unwrap(); - - assert_eq!(&cfg.out, expected_out); - } - } - - test(parse(""), None); - - { - let build_dir = if cfg!(windows) { "C:\\tmp" } else { "/tmp" }; - test(parse(&format!("build.build-dir = '{build_dir}'")), Some(build_dir)); - } -} - #[test] fn clap_verify() { Flags::command().debug_assert(); @@ -127,54 +59,54 @@ fn clap_verify() { #[test] fn override_toml() { - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--config=/does/not/exist".to_owned(), - "--set=change-id=1".to_owned(), - "--set=rust.lto=fat".to_owned(), - "--set=rust.deny-warnings=false".to_owned(), - "--set=build.optimized-compiler-builtins=true".to_owned(), - "--set=build.gdb=\"bar\"".to_owned(), - "--set=build.tools=[\"cargo\"]".to_owned(), - "--set=llvm.build-config={\"foo\" = \"bar\"}".to_owned(), - "--set=target.x86_64-unknown-linux-gnu.runner=bar".to_owned(), - "--set=target.x86_64-unknown-linux-gnu.rpath=false".to_owned(), - "--set=target.aarch64-unknown-linux-gnu.sanitizers=false".to_owned(), - "--set=target.aarch64-apple-darwin.runner=apple".to_owned(), - "--set=target.aarch64-apple-darwin.optimized-compiler-builtins=false".to_owned(), - ]), - |&_| { - toml::from_str( - r#" -change-id = 0 -[rust] -lto = "off" -deny-warnings = true -download-rustc=false - -[build] -gdb = "foo" -tools = [] - -[llvm] -download-ci-llvm = false -build-config = {} - -[target.aarch64-unknown-linux-gnu] -sanitizers = true -rpath = true -runner = "aarch64-runner" - -[target.x86_64-unknown-linux-gnu] -sanitizers = true -rpath = true -runner = "x86_64-runner" - - "#, - ) - }, - ); + let config_toml: &str = r#" + change-id = 0 + + [rust] + lto = "off" + deny-warnings = true + download-rustc = false + + [build] + gdb = "foo" + tools = [] + + [llvm] + download-ci-llvm = false + build-config = {} + + [target.aarch64-unknown-linux-gnu] + sanitizers = true + rpath = true + runner = "aarch64-runner" + + [target.x86_64-unknown-linux-gnu] + sanitizers = true + rpath = true + runner = "x86_64-runner" + "#; + + let args = [ + "--set=change-id=1", + "--set=rust.lto=fat", + "--set=rust.deny-warnings=false", + "--set=build.optimized-compiler-builtins=true", + "--set=build.gdb=\"bar\"", + "--set=build.tools=[\"cargo\"]", + "--set=llvm.build-config={\"foo\" = \"bar\"}", + "--set=target.x86_64-unknown-linux-gnu.runner=bar", + "--set=target.x86_64-unknown-linux-gnu.rpath=false", + "--set=target.aarch64-unknown-linux-gnu.sanitizers=false", + "--set=target.aarch64-apple-darwin.runner=apple", + "--set=target.aarch64-apple-darwin.optimized-compiler-builtins=false", + ]; + + let config = TestCtx::new() + .config("check") + .with_default_toml_config(config_toml) + .args(&args) + .create_config(); + assert_eq!(config.change_id, Some(ChangeId::Id(1)), "setting top-level value"); assert_eq!( config.rust_lto, @@ -233,33 +165,26 @@ runner = "x86_64-runner" #[test] #[should_panic] fn override_toml_duplicate() { - Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--config=/does/not/exist".to_string(), - "--set=change-id=1".to_owned(), - "--set=change-id=2".to_owned(), - ]), - |&_| toml::from_str("change-id = 0"), - ); + TestCtx::new() + .config("check") + .with_default_toml_config("change-id = 0") + .arg("--set") + .arg("change-id=1") + .arg("--set") + .arg("change-id=2") + .create_config(); } #[test] fn profile_user_dist() { - fn get_toml(file: &Path) -> Result<TomlConfig, toml::de::Error> { - let contents = if file.ends_with("bootstrap.toml") - || file.ends_with("config.toml") - || env::var_os("RUST_BOOTSTRAP_CONFIG").is_some() - { - "profile = \"user\"".to_owned() - } else { - assert!(file.ends_with("config.dist.toml") || file.ends_with("bootstrap.dist.toml")); - std::fs::read_to_string(file).unwrap() - }; - - toml::from_str(&contents).and_then(|table: toml::Value| TomlConfig::deserialize(table)) - } - Config::parse_inner(Flags::parse(&["check".to_owned()]), get_toml); + TestCtx::new() + .config("check") + .with_default_toml_config( + r#" + profile = "user" + "#, + ) + .create_config(); } #[test] @@ -277,12 +202,15 @@ fn rust_optimize() { #[test] #[should_panic] fn invalid_rust_optimize() { - parse("rust.optimize = \"a\""); + TestCtx::new() + .config("check") + .with_default_toml_config("rust.optimize = \"a\"") + .create_config(); } #[test] fn verify_file_integrity() { - let config = parse(""); + let config = TestCtx::new().config("check").no_dry_run().create_config(); let tempfile = config.tempdir().join(".tmp-test-file"); File::create(&tempfile).unwrap().write_all(b"dummy value").unwrap(); @@ -292,17 +220,37 @@ fn verify_file_integrity() { config .verify(&tempfile, "7e255dd9542648a8779268a0f268b891a198e9828e860ed23f826440e786eae5") ); - - remove_file(tempfile).unwrap(); } #[test] fn rust_lld() { - assert!(matches!(parse("").lld_mode, LldMode::Unused)); - assert!(matches!(parse("rust.use-lld = \"self-contained\"").lld_mode, LldMode::SelfContained)); - assert!(matches!(parse("rust.use-lld = \"external\"").lld_mode, LldMode::External)); - assert!(matches!(parse("rust.use-lld = true").lld_mode, LldMode::External)); - assert!(matches!(parse("rust.use-lld = false").lld_mode, LldMode::Unused)); + assert!(matches!(parse("").bootstrap_override_lld, BootstrapOverrideLld::None)); + assert!(matches!( + parse("rust.bootstrap-override-lld = \"self-contained\"").bootstrap_override_lld, + BootstrapOverrideLld::SelfContained + )); + assert!(matches!( + parse("rust.bootstrap-override-lld = \"external\"").bootstrap_override_lld, + BootstrapOverrideLld::External + )); + assert!(matches!( + parse("rust.bootstrap-override-lld = true").bootstrap_override_lld, + BootstrapOverrideLld::External + )); + assert!(matches!( + parse("rust.bootstrap-override-lld = false").bootstrap_override_lld, + BootstrapOverrideLld::None + )); + + // Also check the legacy options + assert!(matches!( + parse("rust.use-lld = true").bootstrap_override_lld, + BootstrapOverrideLld::External + )); + assert!(matches!( + parse("rust.use-lld = false").bootstrap_override_lld, + BootstrapOverrideLld::None + )); } #[test] @@ -324,22 +272,23 @@ fn parse_change_id_with_unknown_field() { #[test] fn order_of_clippy_rules() { - let args = vec![ - "clippy".to_string(), - "--fix".to_string(), - "--allow-dirty".to_string(), - "--allow-staged".to_string(), - "-Aclippy:all".to_string(), - "-Wclippy::style".to_string(), - "-Aclippy::foo1".to_string(), - "-Aclippy::foo2".to_string(), + let args = [ + "clippy", + "--fix", + "--allow-dirty", + "--allow-staged", + "-Aclippy:all", + "-Wclippy::style", + "-Aclippy::foo1", + "-Aclippy::foo2", ]; - let config = Config::parse(Flags::parse(&args)); + let config = TestCtx::new().config(&args[0]).args(&args[1..]).create_config(); let actual = match config.cmd.clone() { crate::Subcommand::Clippy { allow, deny, warn, forbid, .. } => { let cfg = LintConfig { allow, deny, warn, forbid }; - get_clippy_rules_in_order(&args, &cfg) + let args_vec: Vec<String> = args.iter().map(|s| s.to_string()).collect(); + get_clippy_rules_in_order(&args_vec, &cfg) } _ => panic!("invalid subcommand"), }; @@ -356,14 +305,14 @@ fn order_of_clippy_rules() { #[test] fn clippy_rule_separate_prefix() { - let args = - vec!["clippy".to_string(), "-A clippy:all".to_string(), "-W clippy::style".to_string()]; - let config = Config::parse(Flags::parse(&args)); + let args = ["clippy", "-A clippy:all", "-W clippy::style"]; + let config = TestCtx::new().config(&args[0]).args(&args[1..]).create_config(); let actual = match config.cmd.clone() { crate::Subcommand::Clippy { allow, deny, warn, forbid, .. } => { let cfg = LintConfig { allow, deny, warn, forbid }; - get_clippy_rules_in_order(&args, &cfg) + let args_vec: Vec<String> = args.iter().map(|s| s.to_string()).collect(); + get_clippy_rules_in_order(&args_vec, &cfg) } _ => panic!("invalid subcommand"), }; @@ -374,16 +323,20 @@ fn clippy_rule_separate_prefix() { #[test] fn verbose_tests_default_value() { - let config = Config::parse(Flags::parse(&["build".into(), "compiler".into()])); + let config = TestCtx::new().config("build").args(&["compiler".into()]).create_config(); assert_eq!(config.verbose_tests, false); - let config = Config::parse(Flags::parse(&["build".into(), "compiler".into(), "-v".into()])); + let config = + TestCtx::new().config("build").args(&["compiler".into(), "-v".into()]).create_config(); assert_eq!(config.verbose_tests, true); } #[test] fn parse_rust_std_features() { - let config = parse("rust.std-features = [\"panic-unwind\", \"backtrace\"]"); + let config = TestCtx::new() + .config("check") + .with_default_toml_config("rust.std-features = [\"panic-unwind\", \"backtrace\"]") + .create_config(); let expected_features: BTreeSet<String> = ["panic-unwind", "backtrace"].into_iter().map(|s| s.to_string()).collect(); assert_eq!(config.rust_std_features, expected_features); @@ -391,7 +344,10 @@ fn parse_rust_std_features() { #[test] fn parse_rust_std_features_empty() { - let config = parse("rust.std-features = []"); + let config = TestCtx::new() + .config("check") + .with_default_toml_config("rust.std-features = []") + .create_config(); let expected_features: BTreeSet<String> = BTreeSet::new(); assert_eq!(config.rust_std_features, expected_features); } @@ -399,70 +355,65 @@ fn parse_rust_std_features_empty() { #[test] #[should_panic] fn parse_rust_std_features_invalid() { - parse("rust.std-features = \"backtrace\""); + TestCtx::new() + .config("check") + .with_default_toml_config("rust.std-features = \"backtrace\"") + .create_config(); } #[test] fn parse_jobs() { - assert_eq!(parse("build.jobs = 1").jobs, Some(1)); + assert_eq!( + TestCtx::new() + .config("check") + .with_default_toml_config("build.jobs = 1") + .create_config() + .jobs, + Some(1) + ); } #[test] fn jobs_precedence() { // `--jobs` should take precedence over using `--set build.jobs`. - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--config=/does/not/exist".to_owned(), - "--jobs=67890".to_owned(), - "--set=build.jobs=12345".to_owned(), - ]), - |&_| toml::from_str(""), - ); + let config = TestCtx::new() + .config("check") + .args(&["--jobs=67890", "--set=build.jobs=12345"]) + .create_config(); assert_eq!(config.jobs, Some(67890)); // `--set build.jobs` should take precedence over `bootstrap.toml`. - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--config=/does/not/exist".to_owned(), - "--set=build.jobs=12345".to_owned(), - ]), - |&_| { - toml::from_str( - r#" - [build] - jobs = 67890 - "#, - ) - }, - ); + let config = TestCtx::new() + .config("check") + .args(&["--set=build.jobs=12345"]) + .with_default_toml_config( + r#" + [build] + jobs = 67890 + "#, + ) + .create_config(); + assert_eq!(config.jobs, Some(12345)); // `--jobs` > `--set build.jobs` > `bootstrap.toml` - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--jobs=123".to_owned(), - "--config=/does/not/exist".to_owned(), - "--set=build.jobs=456".to_owned(), - ]), - |&_| { - toml::from_str( - r#" - [build] - jobs = 789 - "#, - ) - }, - ); + let config = TestCtx::new() + .config("check") + .args(&["--jobs=123", "--set=build.jobs=456"]) + .with_default_toml_config( + r#" + [build] + jobs = 789 + "#, + ) + .create_config(); assert_eq!(config.jobs, Some(123)); } #[test] fn check_rustc_if_unchanged_paths() { - let config = parse(""); + let config = TestCtx::new().config("check").create_config(); let normalised_allowed_paths: Vec<_> = RUSTC_IF_UNCHANGED_ALLOWED_PATHS .iter() .map(|t| { @@ -477,59 +428,42 @@ fn check_rustc_if_unchanged_paths() { #[test] fn test_explicit_stage() { - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), "--config=/does/not/exist".to_owned()]), - |&_| { - toml::from_str( - r#" + let config = TestCtx::new() + .config("check") + .with_default_toml_config( + r#" [build] test-stage = 1 "#, - ) - }, - ); + ) + .create_config(); assert!(!config.explicit_stage_from_cli); assert!(config.explicit_stage_from_config); assert!(config.is_explicit_stage()); - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--stage=2".to_owned(), - "--config=/does/not/exist".to_owned(), - ]), - |&_| toml::from_str(""), - ); + let config = TestCtx::new().config("check").stage(2).create_config(); assert!(config.explicit_stage_from_cli); assert!(!config.explicit_stage_from_config); assert!(config.is_explicit_stage()); - let config = Config::parse_inner( - Flags::parse(&[ - "check".to_owned(), - "--stage=2".to_owned(), - "--config=/does/not/exist".to_owned(), - ]), - |&_| { - toml::from_str( - r#" + let config = TestCtx::new() + .config("check") + .stage(2) + .with_default_toml_config( + r#" [build] test-stage = 1 "#, - ) - }, - ); + ) + .create_config(); assert!(config.explicit_stage_from_cli); assert!(config.explicit_stage_from_config); assert!(config.is_explicit_stage()); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), "--config=/does/not/exist".to_owned()]), - |&_| toml::from_str(""), - ); + let config = TestCtx::new().config("check").create_config(); assert!(!config.explicit_stage_from_cli); assert!(!config.explicit_stage_from_config); @@ -539,7 +473,10 @@ fn test_explicit_stage() { #[test] fn test_exclude() { let exclude_path = "compiler"; - let config = parse(&format!("build.exclude=[\"{}\"]", exclude_path)); + let config = TestCtx::new() + .config("check") + .with_default_toml_config(&format!("build.exclude=[\"{}\"]", exclude_path)) + .create_config(); let first_excluded = config .skip @@ -553,32 +490,20 @@ fn test_exclude() { #[test] fn test_ci_flag() { - let config = Config::parse_inner(Flags::parse(&["check".into(), "--ci=false".into()]), |&_| { - toml::from_str("") - }); + let config = TestCtx::new().config("check").arg("--ci").arg("false").create_config(); assert!(!config.is_running_on_ci); - let config = Config::parse_inner(Flags::parse(&["check".into(), "--ci=true".into()]), |&_| { - toml::from_str("") - }); + let config = TestCtx::new().config("check").arg("--ci").arg("true").create_config(); assert!(config.is_running_on_ci); - let config = Config::parse_inner(Flags::parse(&["check".into()]), |&_| toml::from_str("")); + let config = TestCtx::new().config("check").create_config(); assert_eq!(config.is_running_on_ci, CiEnv::is_ci()); } #[test] fn test_precedence_of_includes() { - let testdir = prepare_test_specific_dir(); - - let root_config = testdir.join("config.toml"); - let root_config_content = br#" - include = ["./extension.toml"] - - [llvm] - link-jobs = 2 - "#; - File::create(&root_config).unwrap().write_all(root_config_content).unwrap(); + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let extension = testdir.join("extension.toml"); let extension_content = br#" @@ -599,10 +524,17 @@ fn test_precedence_of_includes() { "#; File::create(extension).unwrap().write_all(extension_content).unwrap(); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + let config = test_ctx + .config("check") + .with_default_toml_config( + r#" + include = ["./extension.toml"] + + [llvm] + link-jobs = 2 + "#, + ) + .create_config(); assert_eq!(config.change_id.unwrap(), ChangeId::Id(543)); assert_eq!(config.llvm_link_jobs.unwrap(), 2); @@ -612,36 +544,29 @@ fn test_precedence_of_includes() { #[test] #[should_panic(expected = "Cyclic inclusion detected")] fn test_cyclic_include_direct() { - let testdir = prepare_test_specific_dir(); - - let root_config = testdir.join("config.toml"); - let root_config_content = br#" - include = ["./extension.toml"] - "#; - File::create(&root_config).unwrap().write_all(root_config_content).unwrap(); - + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let extension = testdir.join("extension.toml"); let extension_content = br#" - include = ["./config.toml"] + include = ["./bootstrap.toml"] "#; File::create(extension).unwrap().write_all(extension_content).unwrap(); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + test_ctx + .config("check") + .with_default_toml_config( + r#" + include = ["./extension.toml"] + "#, + ) + .create_config(); } #[test] #[should_panic(expected = "Cyclic inclusion detected")] fn test_cyclic_include_indirect() { - let testdir = prepare_test_specific_dir(); - - let root_config = testdir.join("config.toml"); - let root_config_content = br#" - include = ["./extension.toml"] - "#; - File::create(&root_config).unwrap().write_all(root_config_content).unwrap(); + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let extension = testdir.join("extension.toml"); let extension_content = br#" @@ -661,43 +586,37 @@ fn test_cyclic_include_indirect() { "#; File::create(extension).unwrap().write_all(extension_content).unwrap(); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + test_ctx + .config("check") + .with_default_toml_config( + r#" + include = ["./extension.toml"] + "#, + ) + .create_config(); } #[test] fn test_include_absolute_paths() { - let testdir = prepare_test_specific_dir(); + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let extension = testdir.join("extension.toml"); File::create(&extension).unwrap().write_all(&[]).unwrap(); - let root_config = testdir.join("config.toml"); let extension_absolute_path = extension.canonicalize().unwrap().to_str().unwrap().replace('\\', r"\\"); let root_config_content = format!(r#"include = ["{}"]"#, extension_absolute_path); - File::create(&root_config).unwrap().write_all(root_config_content.as_bytes()).unwrap(); - - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + test_ctx.config("check").with_default_toml_config(&root_config_content).create_config(); } #[test] fn test_include_relative_paths() { - let testdir = prepare_test_specific_dir(); + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let _ = fs::create_dir_all(&testdir.join("subdir/another_subdir")); - let root_config = testdir.join("config.toml"); - let root_config_content = br#" - include = ["./subdir/extension.toml"] - "#; - File::create(&root_config).unwrap().write_all(root_config_content).unwrap(); - let extension = testdir.join("subdir/extension.toml"); let extension_content = br#" include = ["../extension2.toml"] @@ -719,22 +638,20 @@ fn test_include_relative_paths() { let extension = testdir.join("extension4.toml"); File::create(extension).unwrap().write_all(&[]).unwrap(); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + test_ctx + .config("check") + .with_default_toml_config( + r#" + include = ["./subdir/extension.toml"] + "#, + ) + .create_config(); } #[test] fn test_include_precedence_over_profile() { - let testdir = prepare_test_specific_dir(); - - let root_config = testdir.join("config.toml"); - let root_config_content = br#" - profile = "dist" - include = ["./extension.toml"] - "#; - File::create(&root_config).unwrap().write_all(root_config_content).unwrap(); + let test_ctx = TestCtx::new(); + let testdir = test_ctx.dir(); let extension = testdir.join("extension.toml"); let extension_content = br#" @@ -743,10 +660,15 @@ fn test_include_precedence_over_profile() { "#; File::create(extension).unwrap().write_all(extension_content).unwrap(); - let config = Config::parse_inner( - Flags::parse(&["check".to_owned(), format!("--config={}", root_config.to_str().unwrap())]), - get_toml, - ); + let config = test_ctx + .config("check") + .with_default_toml_config( + r#" + profile = "dist" + include = ["./extension.toml"] + "#, + ) + .create_config(); // "dist" profile would normally set the channel to "auto-detect", but includes should // override profile settings, so we expect this to be "dev" here. diff --git a/src/bootstrap/src/core/config/toml/build.rs b/src/bootstrap/src/core/config/toml/build.rs index a9d4d3961c9..c63673dd980 100644 --- a/src/bootstrap/src/core/config/toml/build.rs +++ b/src/bootstrap/src/core/config/toml/build.rs @@ -70,6 +70,8 @@ define_config! { jobs: Option<u32> = "jobs", compiletest_diff_tool: Option<String> = "compiletest-diff-tool", compiletest_allow_stage0: Option<bool> = "compiletest-allow-stage0", + /// No longer has any effect; kept (for now) to avoid breaking people's configs. + /// FIXME(#146929): Remove this in 2026. compiletest_use_stage0_libtest: Option<bool> = "compiletest-use-stage0-libtest", tidy_extra_checks: Option<String> = "tidy-extra-checks", ccache: Option<StringOrBool> = "ccache", diff --git a/src/bootstrap/src/core/config/toml/mod.rs b/src/bootstrap/src/core/config/toml/mod.rs index 7af22432ef8..f6dc5b67e10 100644 --- a/src/bootstrap/src/core/config/toml/mod.rs +++ b/src/bootstrap/src/core/config/toml/mod.rs @@ -152,10 +152,6 @@ impl Config { } pub(crate) fn get_toml(file: &Path) -> Result<TomlConfig, toml::de::Error> { - #[cfg(test)] - return Ok(TomlConfig::default()); - - #[cfg(not(test))] Self::get_toml_inner(file) } diff --git a/src/bootstrap/src/core/config/toml/rust.rs b/src/bootstrap/src/core/config/toml/rust.rs index e5987d7040a..ca9e0d0bc98 100644 --- a/src/bootstrap/src/core/config/toml/rust.rs +++ b/src/bootstrap/src/core/config/toml/rust.rs @@ -45,7 +45,9 @@ define_config! { codegen_backends: Option<Vec<String>> = "codegen-backends", llvm_bitcode_linker: Option<bool> = "llvm-bitcode-linker", lld: Option<bool> = "lld", - lld_mode: Option<LldMode> = "use-lld", + bootstrap_override_lld: Option<BootstrapOverrideLld> = "bootstrap-override-lld", + // FIXME: Remove this option in Spring 2026 + bootstrap_override_lld_legacy: Option<BootstrapOverrideLld> = "use-lld", llvm_tools: Option<bool> = "llvm-tools", deny_warnings: Option<bool> = "deny-warnings", backtrace_on_ice: Option<bool> = "backtrace-on-ice", @@ -70,22 +72,33 @@ define_config! { } } -/// LLD in bootstrap works like this: -/// - Self-contained lld: use `rust-lld` from the compiler's sysroot +/// Determines if we should override the linker used for linking Rust code built +/// during the bootstrapping process to be LLD. +/// +/// The primary use-case for this is to make local (re)builds of Rust code faster +/// when using bootstrap. +/// +/// This does not affect the *behavior* of the built/distributed compiler when invoked +/// outside of bootstrap. +/// It might affect its performance/binary size though, as that can depend on the +/// linker that links rustc. +/// +/// There are two ways of overriding the linker to be LLD: +/// - Self-contained LLD: use `rust-lld` from the compiler's sysroot /// - External: use an external `lld` binary /// /// It is configured depending on the target: /// 1) Everything except MSVC -/// - Self-contained: `-Clinker-flavor=gnu-lld-cc -Clink-self-contained=+linker` -/// - External: `-Clinker-flavor=gnu-lld-cc` +/// - Self-contained: `-Clinker-features=+lld -Clink-self-contained=+linker` +/// - External: `-Clinker-features=+lld` /// 2) MSVC /// - Self-contained: `-Clinker=<path to rust-lld>` /// - External: `-Clinker=lld` #[derive(Copy, Clone, Default, Debug, PartialEq)] -pub enum LldMode { - /// Do not use LLD +pub enum BootstrapOverrideLld { + /// Do not override the linker LLD #[default] - Unused, + None, /// Use `rust-lld` from the compiler's sysroot SelfContained, /// Use an externally provided `lld` binary. @@ -94,16 +107,16 @@ pub enum LldMode { External, } -impl LldMode { +impl BootstrapOverrideLld { pub fn is_used(&self) -> bool { match self { - LldMode::SelfContained | LldMode::External => true, - LldMode::Unused => false, + BootstrapOverrideLld::SelfContained | BootstrapOverrideLld::External => true, + BootstrapOverrideLld::None => false, } } } -impl<'de> Deserialize<'de> for LldMode { +impl<'de> Deserialize<'de> for BootstrapOverrideLld { fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where D: Deserializer<'de>, @@ -111,7 +124,7 @@ impl<'de> Deserialize<'de> for LldMode { struct LldModeVisitor; impl serde::de::Visitor<'_> for LldModeVisitor { - type Value = LldMode; + type Value = BootstrapOverrideLld; fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { formatter.write_str("one of true, 'self-contained' or 'external'") @@ -121,7 +134,7 @@ impl<'de> Deserialize<'de> for LldMode { where E: serde::de::Error, { - Ok(if v { LldMode::External } else { LldMode::Unused }) + Ok(if v { BootstrapOverrideLld::External } else { BootstrapOverrideLld::None }) } fn visit_str<E>(self, v: &str) -> Result<Self::Value, E> @@ -129,8 +142,8 @@ impl<'de> Deserialize<'de> for LldMode { E: serde::de::Error, { match v { - "external" => Ok(LldMode::External), - "self-contained" => Ok(LldMode::SelfContained), + "external" => Ok(BootstrapOverrideLld::External), + "self-contained" => Ok(BootstrapOverrideLld::SelfContained), _ => Err(E::custom(format!("unknown mode {v}"))), } } @@ -311,7 +324,6 @@ pub fn check_incompatible_options_for_ci_rustc( lto, stack_protector, strip, - lld_mode, jemalloc, rpath, channel, @@ -359,6 +371,8 @@ pub fn check_incompatible_options_for_ci_rustc( frame_pointers: _, break_on_ice: _, parallel_frontend_threads: _, + bootstrap_override_lld: _, + bootstrap_override_lld_legacy: _, } = ci_rust_config; // There are two kinds of checks for CI rustc incompatible options: @@ -374,7 +388,6 @@ pub fn check_incompatible_options_for_ci_rustc( err!(current_rust_config.debuginfo_level_rustc, debuginfo_level_rustc, "rust"); err!(current_rust_config.rpath, rpath, "rust"); err!(current_rust_config.strip, strip, "rust"); - err!(current_rust_config.lld_mode, lld_mode, "rust"); err!(current_rust_config.llvm_tools, llvm_tools, "rust"); err!(current_rust_config.llvm_bitcode_linker, llvm_bitcode_linker, "rust"); err!(current_rust_config.jemalloc, jemalloc, "rust"); diff --git a/src/bootstrap/src/core/download.rs b/src/bootstrap/src/core/download.rs index 2f3c80559c0..a096d116e73 100644 --- a/src/bootstrap/src/core/download.rs +++ b/src/bootstrap/src/core/download.rs @@ -106,7 +106,7 @@ enum DownloadSource { /// Functions that are only ever called once, but named for clarity and to avoid thousand-line functions. impl Config { pub(crate) fn download_clippy(&self) -> PathBuf { - self.verbose(|| println!("downloading stage0 clippy artifacts")); + self.do_if_verbose(|| println!("downloading stage0 clippy artifacts")); let date = &self.stage0_metadata.compiler.date; let version = &self.stage0_metadata.compiler.version; @@ -151,7 +151,9 @@ impl Config { } pub(crate) fn download_ci_rustc(&self, commit: &str) { - self.verbose(|| println!("using downloaded stage2 artifacts from CI (commit {commit})")); + self.do_if_verbose(|| { + println!("using downloaded stage2 artifacts from CI (commit {commit})") + }); let version = self.artifact_version_part(commit); // download-rustc doesn't need its own cargo, it can just use beta's. But it does need the @@ -258,7 +260,7 @@ impl Config { let llvm_root = self.ci_llvm_root(); let llvm_freshness = detect_llvm_freshness(self, self.rust_info.is_managed_git_subrepository()); - self.verbose(|| { + self.do_if_verbose(|| { eprintln!("LLVM freshness: {llvm_freshness:?}"); }); let llvm_sha = match llvm_freshness { @@ -504,7 +506,7 @@ pub(crate) fn maybe_download_rustfmt<'a>( return Some(PathBuf::new()); } - let VersionMetadata { date, version } = dwn_ctx.stage0_metadata.rustfmt.as_ref()?; + let VersionMetadata { date, version, .. } = dwn_ctx.stage0_metadata.rustfmt.as_ref()?; let channel = format!("{version}-{date}"); let host = dwn_ctx.host_target; @@ -557,7 +559,7 @@ pub(crate) fn download_beta_toolchain<'a>(dwn_ctx: impl AsRef<DownloadContext<'a #[cfg(not(test))] pub(crate) fn download_beta_toolchain<'a>(dwn_ctx: impl AsRef<DownloadContext<'a>>, out: &Path) { let dwn_ctx = dwn_ctx.as_ref(); - dwn_ctx.exec_ctx.verbose(|| { + dwn_ctx.exec_ctx.do_if_verbose(|| { println!("downloading stage0 beta artifacts"); }); @@ -812,7 +814,7 @@ fn download_component<'a>( unpack(dwn_ctx.exec_ctx, &tarball, &bin_root, prefix); return; } else { - dwn_ctx.exec_ctx.verbose(|| { + dwn_ctx.exec_ctx.do_if_verbose(|| { println!( "ignoring cached file {} due to failed verification", tarball.display() @@ -853,7 +855,7 @@ download-rustc = false pub(crate) fn verify(exec_ctx: &ExecutionContext, path: &Path, expected: &str) -> bool { use sha2::Digest; - exec_ctx.verbose(|| { + exec_ctx.do_if_verbose(|| { println!("verifying {}", path.display()); }); @@ -934,7 +936,7 @@ fn unpack(exec_ctx: &ExecutionContext, tarball: &Path, dst: &Path, pattern: &str short_path = short_path.strip_prefix(pattern).unwrap_or(short_path); let dst_path = dst.join(short_path); - exec_ctx.verbose(|| { + exec_ctx.do_if_verbose(|| { println!("extracting {} to {}", original_path.display(), dst.display()); }); @@ -965,7 +967,7 @@ fn download_file<'a>( ) { let dwn_ctx = dwn_ctx.as_ref(); - dwn_ctx.exec_ctx.verbose(|| { + dwn_ctx.exec_ctx.do_if_verbose(|| { println!("download {url}"); }); // Use a temporary file in case we crash while downloading, to avoid a corrupt download in cache/. diff --git a/src/bootstrap/src/core/sanity.rs b/src/bootstrap/src/core/sanity.rs index 91d80c96e42..eaa9e3a6a3e 100644 --- a/src/bootstrap/src/core/sanity.rs +++ b/src/bootstrap/src/core/sanity.rs @@ -33,11 +33,7 @@ pub struct Finder { // // Targets can be removed from this list once they are present in the stage0 compiler (usually by updating the beta compiler of the bootstrap). const STAGE0_MISSING_TARGETS: &[&str] = &[ - "armv7a-vex-v5", - "riscv64a23-unknown-linux-gnu", // just a dummy comment so the list doesn't get onelined - "aarch64_be-unknown-hermit", - "aarch64_be-unknown-none-softfloat", "x86_64-unknown-motor", ]; diff --git a/src/bootstrap/src/lib.rs b/src/bootstrap/src/lib.rs index e953fe2945e..dd30f05b728 100644 --- a/src/bootstrap/src/lib.rs +++ b/src/bootstrap/src/lib.rs @@ -35,7 +35,7 @@ use utils::exec::ExecutionContext; use crate::core::builder; use crate::core::builder::Kind; -use crate::core::config::{DryRun, LldMode, LlvmLibunwind, TargetSelection, flags}; +use crate::core::config::{BootstrapOverrideLld, DryRun, LlvmLibunwind, TargetSelection, flags}; use crate::utils::exec::{BootstrapCommand, command}; use crate::utils::helpers::{self, dir_is_empty, exe, libdir, set_file_times, split_debuginfo}; @@ -327,8 +327,8 @@ pub enum Mode { ToolTarget, /// Build a tool which uses the locally built std, placing output in the - /// "stageN-tools" directory. Its usage is quite rare, mainly used by - /// compiletest which needs libtest. + /// "stageN-tools" directory. Its usage is quite rare; historically it was + /// needed by compiletest, but now it is mainly used by `test-float-parse`. ToolStd, /// Build a tool which uses the `rustc_private` mechanism, and thus @@ -415,7 +415,7 @@ macro_rules! forward { } forward! { - verbose(f: impl Fn()), + do_if_verbose(f: impl Fn()), is_verbose() -> bool, create(path: &Path, s: &str), remove(f: &Path), @@ -601,11 +601,11 @@ impl Build { .unwrap() .trim(); if local_release.split('.').take(2).eq(version.split('.').take(2)) { - build.verbose(|| println!("auto-detected local-rebuild {local_release}")); + build.do_if_verbose(|| println!("auto-detected local-rebuild {local_release}")); build.local_rebuild = true; } - build.verbose(|| println!("finding compilers")); + build.do_if_verbose(|| println!("finding compilers")); utils::cc_detect::fill_compilers(&mut build); // When running `setup`, the profile is about to change, so any requirements we have now may // be different on the next invocation. Don't check for them until the next time x.py is @@ -613,7 +613,7 @@ impl Build { // // Similarly, for `setup` we don't actually need submodules or cargo metadata. if !matches!(build.config.cmd, Subcommand::Setup { .. }) { - build.verbose(|| println!("running sanity check")); + build.do_if_verbose(|| println!("running sanity check")); crate::core::sanity::check(&mut build); // Make sure we update these before gathering metadata so we don't get an error about missing @@ -631,7 +631,7 @@ impl Build { // Now, update all existing submodules. build.update_existing_submodules(); - build.verbose(|| println!("learning about cargo")); + build.do_if_verbose(|| println!("learning about cargo")); crate::core::metadata::build(&mut build); } @@ -1087,18 +1087,6 @@ impl Build { }) } - /// Check if verbosity is greater than the `level` - pub fn is_verbose_than(&self, level: usize) -> bool { - self.verbosity > level - } - - /// Runs a function if verbosity is greater than `level`. - fn verbose_than(&self, level: usize, f: impl Fn()) { - if self.is_verbose_than(level) { - f() - } - } - fn info(&self, msg: &str) { match self.config.get_dry_run() { DryRun::SelfCheck => (), @@ -1370,14 +1358,14 @@ impl Build { && !target.is_msvc() { Some(self.cc(target)) - } else if self.config.lld_mode.is_used() + } else if self.config.bootstrap_override_lld.is_used() && self.is_lld_direct_linker(target) && self.host_target == target { - match self.config.lld_mode { - LldMode::SelfContained => Some(self.initial_lld.clone()), - LldMode::External => Some("lld".into()), - LldMode::Unused => None, + match self.config.bootstrap_override_lld { + BootstrapOverrideLld::SelfContained => Some(self.initial_lld.clone()), + BootstrapOverrideLld::External => Some("lld".into()), + BootstrapOverrideLld::None => None, } } else { None @@ -1816,7 +1804,6 @@ impl Build { if self.config.dry_run() { return; } - self.verbose_than(1, || println!("Copy/Link {src:?} to {dst:?}")); if src == dst { return; } @@ -1933,7 +1920,10 @@ impl Build { return; } let dst = dstdir.join(src.file_name().unwrap()); - self.verbose_than(1, || println!("Install {src:?} to {dst:?}")); + + #[cfg(feature = "tracing")] + let _span = trace_io!("install", ?src, ?dst); + t!(fs::create_dir_all(dstdir)); if !src.exists() { panic!("ERROR: File \"{}\" not found!", src.display()); diff --git a/src/bootstrap/src/utils/build_stamp.rs b/src/bootstrap/src/utils/build_stamp.rs index 4c35388a181..5cd68f6d4fe 100644 --- a/src/bootstrap/src/utils/build_stamp.rs +++ b/src/bootstrap/src/utils/build_stamp.rs @@ -112,7 +112,7 @@ pub fn clear_if_dirty(builder: &Builder<'_>, dir: &Path, input: &Path) -> bool { let stamp = BuildStamp::new(dir); let mut cleared = false; if mtime(stamp.path()) < mtime(input) { - builder.verbose(|| println!("Dirty - {}", dir.display())); + builder.do_if_verbose(|| println!("Dirty - {}", dir.display())); let _ = fs::remove_dir_all(dir); cleared = true; } else if stamp.path().exists() { diff --git a/src/bootstrap/src/utils/cc_detect.rs b/src/bootstrap/src/utils/cc_detect.rs index d3926df9650..0662ae304ac 100644 --- a/src/bootstrap/src/utils/cc_detect.rs +++ b/src/bootstrap/src/utils/cc_detect.rs @@ -137,16 +137,16 @@ pub fn fill_target_compiler(build: &mut Build, target: TargetSelection) { build.cxx.insert(target, compiler); } - build.verbose(|| println!("CC_{} = {:?}", target.triple, build.cc(target))); - build.verbose(|| println!("CFLAGS_{} = {cflags:?}", target.triple)); + build.do_if_verbose(|| println!("CC_{} = {:?}", target.triple, build.cc(target))); + build.do_if_verbose(|| println!("CFLAGS_{} = {cflags:?}", target.triple)); if let Ok(cxx) = build.cxx(target) { let mut cxxflags = build.cc_handled_clags(target, CLang::Cxx); cxxflags.extend(build.cc_unhandled_cflags(target, GitRepo::Rustc, CLang::Cxx)); - build.verbose(|| println!("CXX_{} = {cxx:?}", target.triple)); - build.verbose(|| println!("CXXFLAGS_{} = {cxxflags:?}", target.triple)); + build.do_if_verbose(|| println!("CXX_{} = {cxx:?}", target.triple)); + build.do_if_verbose(|| println!("CXXFLAGS_{} = {cxxflags:?}", target.triple)); } if let Some(ar) = ar { - build.verbose(|| println!("AR_{} = {ar:?}", target.triple)); + build.do_if_verbose(|| println!("AR_{} = {ar:?}", target.triple)); build.ar.insert(target, ar); } diff --git a/src/bootstrap/src/utils/change_tracker.rs b/src/bootstrap/src/utils/change_tracker.rs index 6b187578c31..853fc4e6623 100644 --- a/src/bootstrap/src/utils/change_tracker.rs +++ b/src/bootstrap/src/utils/change_tracker.rs @@ -556,4 +556,14 @@ pub const CONFIG_CHANGE_HISTORY: &[ChangeInfo] = &[ severity: ChangeSeverity::Info, summary: "New option `build.windows-rc` that will override which resource compiler on Windows will be used to compile Rust.", }, + ChangeInfo { + change_id: 147046, + severity: ChangeSeverity::Warning, + summary: "The `rust.use-lld` option has been renamed to `rust.bootstrap-override-lld`. Note that it only serves for overriding the linker used when building Rust code in bootstrap to be LLD.", + }, + ChangeInfo { + change_id: 146929, + severity: ChangeSeverity::Info, + summary: "`compiletest` is now always built with the stage 0 compiler, so `build.compiletest-use-stage0-libtest` has no effect.", + }, ]; diff --git a/src/bootstrap/src/utils/exec.rs b/src/bootstrap/src/utils/exec.rs index e09f3086b77..f875e6e1af7 100644 --- a/src/bootstrap/src/utils/exec.rs +++ b/src/bootstrap/src/utils/exec.rs @@ -630,7 +630,7 @@ impl ExecutionContext { &self.dry_run } - pub fn verbose(&self, f: impl Fn()) { + pub fn do_if_verbose(&self, f: impl Fn()) { if self.is_verbose() { f() } @@ -686,7 +686,7 @@ impl ExecutionContext { if let Some(cached_output) = self.command_cache.get(&fingerprint) { command.mark_as_executed(); - self.verbose(|| println!("Cache hit: {command:?}")); + self.do_if_verbose(|| println!("Cache hit: {command:?}")); self.profiler.record_cache_hit(fingerprint); return DeferredCommand { state: CommandState::Cached(cached_output) }; } @@ -713,7 +713,7 @@ impl ExecutionContext { }; } - self.verbose(|| { + self.do_if_verbose(|| { println!("running: {command:?} (created at {created_at}, executed at {executed_at})") }); diff --git a/src/bootstrap/src/utils/helpers.rs b/src/bootstrap/src/utils/helpers.rs index e802c0214dd..faada9a111d 100644 --- a/src/bootstrap/src/utils/helpers.rs +++ b/src/bootstrap/src/utils/helpers.rs @@ -12,7 +12,7 @@ use std::{env, fs, io, panic, str}; use object::read::archive::ArchiveFile; -use crate::LldMode; +use crate::BootstrapOverrideLld; use crate::core::builder::Builder; use crate::core::config::{Config, TargetSelection}; use crate::utils::exec::{BootstrapCommand, command}; @@ -357,15 +357,19 @@ pub fn get_clang_cl_resource_dir(builder: &Builder<'_>, clang_cl_path: &str) -> /// Returns a flag that configures LLD to use only a single thread. /// If we use an external LLD, we need to find out which version is it to know which flag should we /// pass to it (LLD older than version 10 had a different flag). -fn lld_flag_no_threads(builder: &Builder<'_>, lld_mode: LldMode, is_windows: bool) -> &'static str { +fn lld_flag_no_threads( + builder: &Builder<'_>, + bootstrap_override_lld: BootstrapOverrideLld, + is_windows: bool, +) -> &'static str { static LLD_NO_THREADS: OnceLock<(&'static str, &'static str)> = OnceLock::new(); let new_flags = ("/threads:1", "--threads=1"); let old_flags = ("/no-threads", "--no-threads"); let (windows_flag, other_flag) = LLD_NO_THREADS.get_or_init(|| { - let newer_version = match lld_mode { - LldMode::External => { + let newer_version = match bootstrap_override_lld { + BootstrapOverrideLld::External => { let mut cmd = command("lld"); cmd.arg("-flavor").arg("ld").arg("--version"); let out = cmd.run_capture_stdout(builder).stdout(); @@ -422,24 +426,28 @@ pub fn linker_flags( lld_threads: LldThreads, ) -> Vec<String> { let mut args = vec![]; - if !builder.is_lld_direct_linker(target) && builder.config.lld_mode.is_used() { - match builder.config.lld_mode { - LldMode::External => { + if !builder.is_lld_direct_linker(target) && builder.config.bootstrap_override_lld.is_used() { + match builder.config.bootstrap_override_lld { + BootstrapOverrideLld::External => { args.push("-Clinker-features=+lld".to_string()); args.push("-Zunstable-options".to_string()); } - LldMode::SelfContained => { + BootstrapOverrideLld::SelfContained => { args.push("-Clinker-features=+lld".to_string()); args.push("-Clink-self-contained=+linker".to_string()); args.push("-Zunstable-options".to_string()); } - LldMode::Unused => unreachable!(), + BootstrapOverrideLld::None => unreachable!(), }; if matches!(lld_threads, LldThreads::No) { args.push(format!( "-Clink-arg=-Wl,{}", - lld_flag_no_threads(builder, builder.config.lld_mode, target.is_windows()) + lld_flag_no_threads( + builder, + builder.config.bootstrap_override_lld, + target.is_windows() + ) )); } } diff --git a/src/bootstrap/src/utils/helpers/tests.rs b/src/bootstrap/src/utils/helpers/tests.rs index 9030ca2820a..676fe6cbd5f 100644 --- a/src/bootstrap/src/utils/helpers/tests.rs +++ b/src/bootstrap/src/utils/helpers/tests.rs @@ -6,6 +6,7 @@ use crate::utils::helpers::{ check_cfg_arg, extract_beta_rev, hex_encode, make, set_file_times, submodule_path_of, symlink_dir, }; +use crate::utils::tests::TestCtx; use crate::{Config, Flags}; #[test] @@ -59,8 +60,7 @@ fn test_check_cfg_arg() { #[test] fn test_symlink_dir() { - let config = - Config::parse(Flags::parse(&["check".to_owned(), "--config=/does/not/exist".to_owned()])); + let config = TestCtx::new().config("check").no_dry_run().create_config(); let tempdir = config.tempdir().join(".tmp-dir"); let link_path = config.tempdir().join(".tmp-link"); @@ -80,8 +80,7 @@ fn test_symlink_dir() { #[test] fn test_set_file_times_sanity_check() { - let config = - Config::parse(Flags::parse(&["check".to_owned(), "--config=/does/not/exist".to_owned()])); + let config = TestCtx::new().config("check").create_config(); let tempfile = config.tempdir().join(".tmp-file"); { @@ -102,9 +101,7 @@ fn test_set_file_times_sanity_check() { #[test] fn test_submodule_path_of() { - let config = Config::parse_inner(Flags::parse(&["build".into(), "--dry-run".into()]), |&_| { - Ok(Default::default()) - }); + let config = TestCtx::new().config("build").create_config(); let build = crate::Build::new(config.clone()); let builder = crate::core::builder::Builder::new(&build); diff --git a/src/bootstrap/src/utils/render_tests.rs b/src/bootstrap/src/utils/render_tests.rs index 90fd57d976d..e90a7ef4232 100644 --- a/src/bootstrap/src/utils/render_tests.rs +++ b/src/bootstrap/src/utils/render_tests.rs @@ -48,7 +48,7 @@ pub(crate) fn try_run_tests( } fn run_tests(builder: &Builder<'_>, cmd: &mut BootstrapCommand, stream: bool) -> bool { - builder.verbose(|| println!("running: {cmd:?}")); + builder.do_if_verbose(|| println!("running: {cmd:?}")); let Some(mut streaming_command) = cmd.stream_capture_stdout(&builder.config.exec_ctx) else { return true; diff --git a/src/bootstrap/src/utils/tarball.rs b/src/bootstrap/src/utils/tarball.rs index 7b77b212934..079afb7a005 100644 --- a/src/bootstrap/src/utils/tarball.rs +++ b/src/bootstrap/src/utils/tarball.rs @@ -356,7 +356,7 @@ impl<'a> Tarball<'a> { // For `x install` tarball files aren't needed, so we can speed up the process by not producing them. let compression_profile = if self.builder.kind == Kind::Install { - self.builder.verbose(|| { + self.builder.do_if_verbose(|| { println!("Forcing dist.compression-profile = 'no-op' for `x install`.") }); // "no-op" indicates that the rust-installer won't produce compressed tarball sources. diff --git a/src/bootstrap/src/utils/tests/mod.rs b/src/bootstrap/src/utils/tests/mod.rs index 3332187e2a8..764b89086cf 100644 --- a/src/bootstrap/src/utils/tests/mod.rs +++ b/src/bootstrap/src/utils/tests/mod.rs @@ -48,11 +48,20 @@ impl TestCtx { pub struct ConfigBuilder { args: Vec<String>, directory: PathBuf, + override_download_ci_llvm: bool, + dry_run: bool, + explicit_config: bool, } impl ConfigBuilder { fn from_args(args: &[&str], directory: PathBuf) -> Self { - Self { args: args.iter().copied().map(String::from).collect(), directory } + Self { + args: args.iter().copied().map(String::from).collect(), + directory, + override_download_ci_llvm: true, + dry_run: true, + explicit_config: true, + } } pub fn path(mut self, path: &str) -> Self { @@ -98,18 +107,46 @@ impl ConfigBuilder { self } - pub fn create_config(mut self) -> Config { - // Run in dry-check, otherwise the test would be too slow - self.args.push("--dry-run".to_string()); + pub fn with_default_toml_config(mut self, config_toml: &str) -> Self { + let toml_path = self.directory.join("bootstrap.toml"); + std::fs::write(&toml_path, config_toml).unwrap(); + self.explicit_config = false; + self.args.push("--config".to_string()); + self.args.push(toml_path.display().to_string()); + self + } + + pub fn no_override_download_ci_llvm(mut self) -> Self { + self.override_download_ci_llvm = false; + self + } + + pub fn no_dry_run(mut self) -> Self { + self.dry_run = false; + self + } + pub fn create_config(mut self) -> Config { + if self.dry_run { + // Run in dry-check, otherwise the test would be too slow + self.args.push("--dry-run".to_string()); + } // Ignore submodules self.args.push("--set".to_string()); self.args.push("build.submodules=false".to_string()); - // Override any external LLVM set and inhibit CI LLVM; pretend that we're always building - // in-tree LLVM from sources. - self.args.push("--set".to_string()); - self.args.push("llvm.download-ci-llvm=false".to_string()); + if self.override_download_ci_llvm { + // Override any external LLVM set and inhibit CI LLVM; pretend that we're always building + // in-tree LLVM from sources. + self.args.push("--set".to_string()); + self.args.push("llvm.download-ci-llvm=false".to_string()); + } + + // always use the bootstrap toml created in the + // temporary directory and not from the <src> + if self.explicit_config { + self = self.with_default_toml_config(""); + } // Do not mess with the local rustc checkout build directory self.args.push("--build-dir".to_string()); diff --git a/src/build_helper/src/stage0_parser.rs b/src/build_helper/src/stage0_parser.rs index 2723f4aa7b9..3f3297dcd2b 100644 --- a/src/build_helper/src/stage0_parser.rs +++ b/src/build_helper/src/stage0_parser.rs @@ -10,6 +10,8 @@ pub struct Stage0 { #[derive(Default, Clone)] pub struct VersionMetadata { + pub channel_manifest_hash: String, + pub git_commit_hash: String, pub date: String, pub version: String, } @@ -50,9 +52,21 @@ pub fn parse_stage0_file() -> Stage0 { "git_merge_commit_email" => stage0.config.git_merge_commit_email = value.to_owned(), "nightly_branch" => stage0.config.nightly_branch = value.to_owned(), + "compiler_channel_manifest_hash" => { + stage0.compiler.channel_manifest_hash = value.to_owned() + } + "compiler_git_commit_hash" => stage0.compiler.git_commit_hash = value.to_owned(), "compiler_date" => stage0.compiler.date = value.to_owned(), "compiler_version" => stage0.compiler.version = value.to_owned(), + "rustfmt_channel_manifest_hash" => { + stage0.rustfmt.get_or_insert(VersionMetadata::default()).channel_manifest_hash = + value.to_owned(); + } + "rustfmt_git_commit_hash" => { + stage0.rustfmt.get_or_insert(VersionMetadata::default()).git_commit_hash = + value.to_owned(); + } "rustfmt_date" => { stage0.rustfmt.get_or_insert(VersionMetadata::default()).date = value.to_owned(); } diff --git a/src/ci/docker/host-aarch64/aarch64-gnu-debug/Dockerfile b/src/ci/docker/host-aarch64/aarch64-gnu-debug/Dockerfile index 71de8f917fa..04b46226acf 100644 --- a/src/ci/docker/host-aarch64/aarch64-gnu-debug/Dockerfile +++ b/src/ci/docker/host-aarch64/aarch64-gnu-debug/Dockerfile @@ -1,4 +1,4 @@ -FROM ubuntu:22.04 +FROM ubuntu:25.10 ARG DEBIAN_FRONTEND=noninteractive RUN apt-get update && apt-get install -y --no-install-recommends \ diff --git a/src/ci/docker/host-aarch64/aarch64-gnu-llvm-20/Dockerfile b/src/ci/docker/host-aarch64/aarch64-gnu-llvm-20/Dockerfile index adbb1f03378..095624d6fb7 100644 --- a/src/ci/docker/host-aarch64/aarch64-gnu-llvm-20/Dockerfile +++ b/src/ci/docker/host-aarch64/aarch64-gnu-llvm-20/Dockerfile @@ -1,4 +1,4 @@ -FROM ubuntu:25.04 +FROM ubuntu:25.10 ARG DEBIAN_FRONTEND=noninteractive diff --git a/src/ci/docker/host-aarch64/aarch64-gnu/Dockerfile b/src/ci/docker/host-aarch64/aarch64-gnu/Dockerfile index e6133fce83e..4b61fd94a6c 100644 --- a/src/ci/docker/host-aarch64/aarch64-gnu/Dockerfile +++ b/src/ci/docker/host-aarch64/aarch64-gnu/Dockerfile @@ -1,4 +1,4 @@ -FROM ubuntu:22.04 +FROM ubuntu:25.10 ARG DEBIAN_FRONTEND=noninteractive RUN apt-get update && apt-get install -y --no-install-recommends \ diff --git a/src/ci/docker/host-aarch64/dist-aarch64-linux/Dockerfile b/src/ci/docker/host-aarch64/dist-aarch64-linux/Dockerfile index e726329753f..3abca36fe70 100644 --- a/src/ci/docker/host-aarch64/dist-aarch64-linux/Dockerfile +++ b/src/ci/docker/host-aarch64/dist-aarch64-linux/Dockerfile @@ -91,7 +91,7 @@ ENV RUST_CONFIGURE_ARGS \ --set llvm.ninja=false \ --set rust.debug-assertions=false \ --set rust.jemalloc \ - --set rust.use-lld=true \ + --set rust.bootstrap-override-lld=true \ --set rust.lto=thin \ --set rust.codegen-units=1 diff --git a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile index 01f19eac1d2..cb574787619 100644 --- a/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile +++ b/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile @@ -92,7 +92,7 @@ ENV RUST_CONFIGURE_ARGS \ --set llvm.ninja=false \ --set llvm.libzstd=true \ --set rust.jemalloc \ - --set rust.use-lld=true \ + --set rust.bootstrap-override-lld=true \ --set rust.lto=thin \ --set rust.codegen-units=1 diff --git a/src/ci/github-actions/jobs.yml b/src/ci/github-actions/jobs.yml index b3e3fe7d96a..4384ec76769 100644 --- a/src/ci/github-actions/jobs.yml +++ b/src/ci/github-actions/jobs.yml @@ -430,10 +430,8 @@ auto: # Ensure that host tooling is built to support our minimum support macOS version. MACOSX_DEPLOYMENT_TARGET: 10.12 MACOSX_STD_DEPLOYMENT_TARGET: 10.12 - SELECT_XCODE: /Applications/Xcode_15.2.app - NO_LLVM_ASSERTIONS: 1 - NO_DEBUG_ASSERTIONS: 1 - NO_OVERFLOW_CHECKS: 1 + SELECT_XCODE: /Applications/Xcode_15.4.app + USE_XCODE_CLANG: 1 DIST_REQUIRE_ALL_TOOLS: 1 CODEGEN_BACKENDS: llvm,cranelift <<: *job-macos @@ -449,31 +447,28 @@ auto: MACOSX_DEPLOYMENT_TARGET: 10.12 MACOSX_STD_DEPLOYMENT_TARGET: 10.12 SELECT_XCODE: /Applications/Xcode_15.2.app - NO_LLVM_ASSERTIONS: 1 - NO_DEBUG_ASSERTIONS: 1 - NO_OVERFLOW_CHECKS: 1 <<: *job-macos - name: dist-aarch64-apple env: - SCRIPT: ./x.py dist bootstrap --include-default-paths --host=aarch64-apple-darwin --target=aarch64-apple-darwin + SCRIPT: >- + ./x.py dist bootstrap + --include-default-paths + --host=aarch64-apple-darwin + --target=aarch64-apple-darwin RUST_CONFIGURE_ARGS: >- --enable-full-tools --enable-sanitizers --enable-profiler --set rust.jemalloc - --set llvm.ninja=false --set rust.lto=thin --set rust.codegen-units=1 - SELECT_XCODE: /Applications/Xcode_15.4.app - USE_XCODE_CLANG: 1 # Aarch64 tooling only needs to support macOS 11.0 and up as nothing else # supports the hardware. MACOSX_DEPLOYMENT_TARGET: 11.0 MACOSX_STD_DEPLOYMENT_TARGET: 11.0 - NO_LLVM_ASSERTIONS: 1 - NO_DEBUG_ASSERTIONS: 1 - NO_OVERFLOW_CHECKS: 1 + SELECT_XCODE: /Applications/Xcode_15.4.app + USE_XCODE_CLANG: 1 DIST_REQUIRE_ALL_TOOLS: 1 CODEGEN_BACKENDS: llvm,cranelift <<: *job-macos @@ -493,9 +488,6 @@ auto: # supports the hardware, so only need to test it there. MACOSX_DEPLOYMENT_TARGET: 11.0 MACOSX_STD_DEPLOYMENT_TARGET: 11.0 - NO_LLVM_ASSERTIONS: 1 - NO_DEBUG_ASSERTIONS: 1 - NO_OVERFLOW_CHECKS: 1 <<: *job-macos ###################### diff --git a/src/doc/book b/src/doc/book -Subproject 3e9dc46aa563ca0c53ec826c41b05f10c591592 +Subproject 33f1af40cc44dde7e3e892f7a508e6f427d2cbc diff --git a/src/doc/reference b/src/doc/reference -Subproject b3ce60628c6f55ab8ff3dba9f3d20203df1c0de +Subproject cc7247d8dfaef4c39000bb12c55c32ba5b5ba97 diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example -Subproject dd26bc8e726dc2e73534c8972d4dccd1bed7495 +Subproject 2c9b490d70e535cf166bf17feba59e594579843 diff --git a/src/doc/rustc-dev-guide/rust-version b/src/doc/rustc-dev-guide/rust-version index df2bac877b6..0dc9ce843e9 100644 --- a/src/doc/rustc-dev-guide/rust-version +++ b/src/doc/rustc-dev-guide/rust-version @@ -1 +1 @@ -2f3f27bf79ec147fec9d2e7980605307a74067f4 +9f32ccf35fb877270bc44a86a126440f04d676d0 diff --git a/src/doc/rustc-dev-guide/src/SUMMARY.md b/src/doc/rustc-dev-guide/src/SUMMARY.md index a1612738537..249140956c0 100644 --- a/src/doc/rustc-dev-guide/src/SUMMARY.md +++ b/src/doc/rustc-dev-guide/src/SUMMARY.md @@ -108,6 +108,7 @@ - [Installation](./autodiff/installation.md) - [How to debug](./autodiff/debugging.md) - [Autodiff flags](./autodiff/flags.md) + - [Type Trees](./autodiff/type-trees.md) # Source Code Representation diff --git a/src/doc/rustc-dev-guide/src/about-this-guide.md b/src/doc/rustc-dev-guide/src/about-this-guide.md index f1a406a1c29..4f5733ae082 100644 --- a/src/doc/rustc-dev-guide/src/about-this-guide.md +++ b/src/doc/rustc-dev-guide/src/about-this-guide.md @@ -48,9 +48,9 @@ In addition, many of the ideas discussed throughout this guide are idealized des that are not fully realized yet. All this makes keeping this guide completely up to date on everything very hard! -The Guide itself is of course open-source as well, -and the sources can be found at the [GitHub repository]. -If you find any mistakes in the guide, please file an issue about it. +The guide itself is of course open source as well, +and the sources are hosted on [a GitHub repository]. +If you find any mistakes in the guide, please file an issue. Even better, open a PR with a correction! If you do contribute to the guide, @@ -105,7 +105,7 @@ You might also find the following sites useful: [cheatsheet]: https://bors.rust-lang.org/ [Miri]: https://github.com/rust-lang/miri [@bors]: https://github.com/bors -[GitHub repository]: https://github.com/rust-lang/rustc-dev-guide/ +[a GitHub repository]: https://github.com/rust-lang/rustc-dev-guide/ [rustc API docs]: https://doc.rust-lang.org/nightly/nightly-rustc/rustc_middle [Forge]: https://forge.rust-lang.org/ [compiler-team]: https://github.com/rust-lang/compiler-team/ diff --git a/src/doc/rustc-dev-guide/src/appendix/glossary.md b/src/doc/rustc-dev-guide/src/appendix/glossary.md index 1837b59e850..21162f8ee7d 100644 --- a/src/doc/rustc-dev-guide/src/appendix/glossary.md +++ b/src/doc/rustc-dev-guide/src/appendix/glossary.md @@ -68,6 +68,7 @@ Term | Meaning <span id="rib">rib</span> | A data structure in the name resolver that keeps track of a single scope for names. ([see more](../name-resolution.md)) <span id="rpit">RPIT</span> | A return-position `impl Trait`. ([see the reference](https://doc.rust-lang.org/reference/types/impl-trait.html#abstract-return-types)). <span id="rpitit">RPITIT</span> | A return-position `impl Trait` in trait. Unlike RPIT, this is desugared to a generic associated type (GAT). Introduced in [RFC 3425](https://rust-lang.github.io/rfcs/3425-return-position-impl-trait-in-traits.html). ([see more](../return-position-impl-trait-in-trait.md)) +<span id="rustbuild">rustbuild</span> | A deprecated term for the part of bootstrap that is written in Rust <span id="scrutinee">scrutinee</span> | A scrutinee is the expression that is matched on in `match` expressions and similar pattern matching constructs. For example, in `match x { A => 1, B => 2 }`, the expression `x` is the scrutinee. <span id="sess">`sess`</span> | The compiler _session_, which stores global data used throughout compilation <span id="side-tables">side tables</span> | Because the [AST](#ast) and HIR are immutable once created, we often carry extra information about them in the form of hashtables, indexed by the id of a particular node. diff --git a/src/doc/rustc-dev-guide/src/autodiff/type-trees.md b/src/doc/rustc-dev-guide/src/autodiff/type-trees.md new file mode 100644 index 00000000000..68cb78650b0 --- /dev/null +++ b/src/doc/rustc-dev-guide/src/autodiff/type-trees.md @@ -0,0 +1,193 @@ +# TypeTrees for Autodiff + +## What are TypeTrees? +Memory layout descriptors for Enzyme. Tell Enzyme exactly how types are structured in memory so it can compute derivatives efficiently. + +## Structure +```rust +TypeTree(Vec<Type>) + +Type { + offset: isize, // byte offset (-1 = everywhere) + size: usize, // size in bytes + kind: Kind, // Float, Integer, Pointer, etc. + child: TypeTree // nested structure +} +``` + +## Example: `fn compute(x: &f32, data: &[f32]) -> f32` + +**Input 0: `x: &f32`** +```rust +TypeTree(vec![Type { + offset: -1, size: 8, kind: Pointer, + child: TypeTree(vec![Type { + offset: 0, size: 4, kind: Float, // Single value: use offset 0 + child: TypeTree::new() + }]) +}]) +``` + +**Input 1: `data: &[f32]`** +```rust +TypeTree(vec![Type { + offset: -1, size: 8, kind: Pointer, + child: TypeTree(vec![Type { + offset: -1, size: 4, kind: Float, // -1 = all elements + child: TypeTree::new() + }]) +}]) +``` + +**Output: `f32`** +```rust +TypeTree(vec![Type { + offset: 0, size: 4, kind: Float, // Single scalar: use offset 0 + child: TypeTree::new() +}]) +``` + +## Why Needed? +- Enzyme can't deduce complex type layouts from LLVM IR +- Prevents slow memory pattern analysis +- Enables correct derivative computation for nested structures +- Tells Enzyme which bytes are differentiable vs metadata + +## What Enzyme Does With This Information: + +Without TypeTrees: +```llvm +; Enzyme sees generic LLVM IR: +define float @distance(ptr %p1, ptr %p2) { +; Has to guess what these pointers point to +; Slow analysis of all memory operations +; May miss optimization opportunities +} +``` + +With TypeTrees: +```llvm +define "enzyme_type"="{[-1]:Float@float}" float @distance( + ptr "enzyme_type"="{[-1]:Pointer, [-1,0]:Float@float}" %p1, + ptr "enzyme_type"="{[-1]:Pointer, [-1,0]:Float@float}" %p2 +) { +; Enzyme knows exact type layout +; Can generate efficient derivative code directly +} +``` + +# TypeTrees - Offset and -1 Explained + +## Type Structure + +```rust +Type { + offset: isize, // WHERE this type starts + size: usize, // HOW BIG this type is + kind: Kind, // WHAT KIND of data (Float, Int, Pointer) + child: TypeTree // WHAT'S INSIDE (for pointers/containers) +} +``` + +## Offset Values + +### Regular Offset (0, 4, 8, etc.) +**Specific byte position within a structure** + +```rust +struct Point { + x: f32, // offset 0, size 4 + y: f32, // offset 4, size 4 + id: i32, // offset 8, size 4 +} +``` + +TypeTree for `&Point` (internal representation): +```rust +TypeTree(vec![ + Type { offset: 0, size: 4, kind: Float }, // x at byte 0 + Type { offset: 4, size: 4, kind: Float }, // y at byte 4 + Type { offset: 8, size: 4, kind: Integer } // id at byte 8 +]) +``` + +Generates LLVM +```llvm +"enzyme_type"="{[-1]:Pointer, [-1,0]:Float@float, [-1,4]:Float@float, [-1,8]:Integer, [-1,9]:Integer, [-1,10]:Integer, [-1,11]:Integer}" +``` + +### Offset -1 (Special: "Everywhere") +**Means "this pattern repeats for ALL elements"** + +#### Example 1: Direct Array `[f32; 100]` (no pointer indirection) +```rust +TypeTree(vec![Type { + offset: -1, // ALL positions + size: 4, // each f32 is 4 bytes + kind: Float, // every element is float +}]) +``` + +Generates LLVM: `"enzyme_type"="{[-1]:Float@float}"` + +#### Example 1b: Array Reference `&[f32; 100]` (with pointer indirection) +```rust +TypeTree(vec![Type { + offset: -1, size: 8, kind: Pointer, + child: TypeTree(vec![Type { + offset: -1, // ALL array elements + size: 4, // each f32 is 4 bytes + kind: Float, // every element is float + }]) +}]) +``` + +Generates LLVM: `"enzyme_type"="{[-1]:Pointer, [-1,-1]:Float@float}"` + +Instead of listing 100 separate Types with offsets `0,4,8,12...396` + +#### Example 2: Slice `&[i32]` +```rust +// Pointer to slice data +TypeTree(vec![Type { + offset: -1, size: 8, kind: Pointer, + child: TypeTree(vec![Type { + offset: -1, // ALL slice elements + size: 4, // each i32 is 4 bytes + kind: Integer + }]) +}]) +``` + +Generates LLVM: `"enzyme_type"="{[-1]:Pointer, [-1,-1]:Integer}"` + +#### Example 3: Mixed Structure +```rust +struct Container { + header: i64, // offset 0 + data: [f32; 1000], // offset 8, but elements use -1 +} +``` + +```rust +TypeTree(vec![ + Type { offset: 0, size: 8, kind: Integer }, // header + Type { offset: 8, size: 4000, kind: Pointer, + child: TypeTree(vec![Type { + offset: -1, size: 4, kind: Float // ALL array elements + }]) + } +]) +``` + +## Key Distinction: Single Values vs Arrays + +**Single Values** use offset `0` for precision: +- `&f32` has exactly one f32 value at offset 0 +- More precise than using -1 ("everywhere") +- Generates: `{[-1]:Pointer, [-1,0]:Float@float}` + +**Arrays** use offset `-1` for efficiency: +- `&[f32; 100]` has the same pattern repeated 100 times +- Using -1 avoids listing 100 separate offsets +- Generates: `{[-1]:Pointer, [-1,-1]:Float@float}` \ No newline at end of file diff --git a/src/doc/rustc-dev-guide/src/building/bootstrapping/writing-tools-in-bootstrap.md b/src/doc/rustc-dev-guide/src/building/bootstrapping/writing-tools-in-bootstrap.md index c3660e24b15..8ac2e6bfe28 100644 --- a/src/doc/rustc-dev-guide/src/building/bootstrapping/writing-tools-in-bootstrap.md +++ b/src/doc/rustc-dev-guide/src/building/bootstrapping/writing-tools-in-bootstrap.md @@ -3,18 +3,32 @@ There are three types of tools you can write in bootstrap: - **`Mode::ToolBootstrap`** + Use this for tools that don’t need anything from the in-tree compiler and can run with the stage0 `rustc`. - The output is placed in the "bootstrap-tools" directory. This mode is for general-purpose tools built - entirely with the stage0 compiler, including target libraries and only works for stage 0. + The output is placed in the "bootstrap-tools" directory. + This mode is for general-purpose tools built entirely with the stage0 compiler, + including target libraries, and it only works for stage 0. - **`Mode::ToolStd`** - Use this for tools that rely on the locally built std. The output goes into the "stageN-tools" directory. + + Use this for tools that rely on the locally built std. + The output goes into the "stageN-tools" directory. This mode is rarely used, mainly for `compiletest` which requires `libtest`. - **`Mode::ToolRustcPrivate`** - Use this for tools that use the `rustc_private` mechanism, and thus depend on the locally built `rustc` and its rlib artifacts. This is more complex than the other modes because the tool must be built with the same compiler used for `rustc` and placed in the "stageN-tools" directory. When you choose `Mode::ToolRustcPrivate`, `ToolBuild` implementation takes care of this automatically. If you need to use the builder’s compiler for something specific, you can get it from `ToolBuildResult`, which is - returned by the tool's [`Step`]. -Regardless of the tool type you must return `ToolBuildResult` from the tool’s [`Step`] implementation and use `ToolBuild` inside it. + Use this for tools that use the `rustc_private` mechanism, + and thus depend on the locally built `rustc` and its rlib artifacts. + This is more complex than the other modes, + because the tool must be built with the same compiler used for `rustc`, + and placed in the "stageN-tools" directory. + When you choose `Mode::ToolRustcPrivate`, + `ToolBuild` implementation takes care of this automatically. + If you need to use the builder’s compiler for something specific, + you can get it from `ToolBuildResult`, which is returned by the tool's [`Step`]. + +Regardless of the tool type, +you must return `ToolBuildResult` from the tool’s [`Step`] implementation, +and use `ToolBuild` inside it. [`Step`]: https://doc.rust-lang.org/nightly/nightly-rustc/bootstrap/core/builder/trait.Step.html diff --git a/src/doc/rustc-dev-guide/src/building/how-to-build-and-run.md b/src/doc/rustc-dev-guide/src/building/how-to-build-and-run.md index b07d3533f59..36610f28854 100644 --- a/src/doc/rustc-dev-guide/src/building/how-to-build-and-run.md +++ b/src/doc/rustc-dev-guide/src/building/how-to-build-and-run.md @@ -149,7 +149,7 @@ On Windows, the Powershell commands may give you an error that looks like this: ``` PS C:\Users\vboxuser\rust> ./x ./x : File C:\Users\vboxuser\rust\x.ps1 cannot be loaded because running scripts is disabled on this system. For more -information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170. +information, see about_Execution_Policies at https://go.microsoft.com/fwlink/?LinkID=135170. At line:1 char:1 + ./x + ~~~ diff --git a/src/doc/rustc-dev-guide/src/compiler-team.md b/src/doc/rustc-dev-guide/src/compiler-team.md index 6be52833f39..896d9e6f6d9 100644 --- a/src/doc/rustc-dev-guide/src/compiler-team.md +++ b/src/doc/rustc-dev-guide/src/compiler-team.md @@ -1,10 +1,14 @@ # About the compiler team +> NOTE: +> There exists much detail about the team [on Forge], making most of the following obsolete. + rustc is maintained by the [Rust compiler team][team]. The people who belong to this team collectively work to track regressions and implement new features. Members of the Rust compiler team are people who have made significant contributions to rustc and its design. +[on Forge]: https://forge.rust-lang.org/compiler [team]: https://www.rust-lang.org/governance/teams/compiler ## Discussion diff --git a/src/doc/rustc-dev-guide/src/fuzzing.md b/src/doc/rustc-dev-guide/src/fuzzing.md index 30005378617..cc98b49a97c 100644 --- a/src/doc/rustc-dev-guide/src/fuzzing.md +++ b/src/doc/rustc-dev-guide/src/fuzzing.md @@ -90,14 +90,15 @@ Here are a few things you can do to help the Rust project after filing an ICE. triggering the ICE, such as syntax errors or borrow-checking errors - Minimize the test case (see below). If successful, you can label the issue with `S-has-mcve`. Otherwise, you can apply `E-needs-mcve`. -- Add the minimal test case to the rust-lang/rust repo as a [crashes test]. +- Add the minimal test case to the rust-lang/rust repo as a [crash test]. While you're at it, consider including other "untracked" crashes in your PR. - Please don't forget to mark your issue with `S-bug-has-test` afterwards. + Please don't forget to mark all relevant issues with `S-bug-has-test` once + your PR is merged. See also [applying and removing labels][labeling]. [bisect]: https://rust-lang.github.io/cargo-bisect-rustc/ -[crashes test]: tests/compiletest.html#crashes-tests +[crash test]: tests/compiletest.html#crash-tests [labeling]: https://forge.rust-lang.org/release/issue-triaging.html#applying-and-removing-labels ## Minimization diff --git a/src/doc/rustc-dev-guide/src/profiling/with_perf.md b/src/doc/rustc-dev-guide/src/profiling/with_perf.md index 0d4f23bcd9a..e452dde5226 100644 --- a/src/doc/rustc-dev-guide/src/profiling/with_perf.md +++ b/src/doc/rustc-dev-guide/src/profiling/with_perf.md @@ -4,8 +4,7 @@ This is a guide for how to profile rustc with [perf](https://perf.wiki.kernel.or ## Initial steps -- Get a clean checkout of rust-lang/master, or whatever it is you want - to profile. +- Get a clean checkout of rust-lang/rust - Set the following settings in your `bootstrap.toml`: - `rust.debuginfo-level = 1` - enables line debuginfo - `rust.jemalloc = false` - lets you do memory use profiling with valgrind diff --git a/src/doc/rustc-dev-guide/src/tests/best-practices.md b/src/doc/rustc-dev-guide/src/tests/best-practices.md index efc626035b7..10372c36ac9 100644 --- a/src/doc/rustc-dev-guide/src/tests/best-practices.md +++ b/src/doc/rustc-dev-guide/src/tests/best-practices.md @@ -71,7 +71,7 @@ related tests. > //! Regression test for <https://github.com/rust-lang/rust/issues/123456>. > ``` > -> One exception to this rule is [crashes tests]: there it is canonical that +> One exception to this rule is [crash tests]: there it is canonical that > tests are named only after issue numbers because its purpose is to track > snippets from which issues no longer ICE/crash, and they would either be > removed or converted into proper ui/other tests in the fix PRs. @@ -199,4 +199,4 @@ See [LLVM FileCheck guide][FileCheck] for details. [compiletest directives]: ./directives.md [`run-make`]: ./compiletest.md#run-make-tests [FileCheck]: https://llvm.org/docs/CommandGuide/FileCheck.html -[crashes tests]: ./compiletest.md#crashes-tests +[crash tests]: ./compiletest.md#crash-tests diff --git a/src/doc/rustc-dev-guide/src/tests/ci.md b/src/doc/rustc-dev-guide/src/tests/ci.md index a8cc959124f..6c0b5c2e845 100644 --- a/src/doc/rustc-dev-guide/src/tests/ci.md +++ b/src/doc/rustc-dev-guide/src/tests/ci.md @@ -1,18 +1,18 @@ # Testing with CI The primary goal of our CI system is to ensure that the `master` branch of -`rust-lang/rust` is always in a valid state and passes our test suite. +`rust-lang/rust` is always in a valid state by passing our test suite. From a high-level point of view, when you open a pull request at `rust-lang/rust`, the following will happen: - A small [subset](#pull-request-builds) of tests and checks are run after each - push to the PR. This should help catching common errors. + push to the PR. This should help catch common errors. - When the PR is approved, the [bors] bot enqueues the PR into a [merge queue]. - Once the PR gets to the front of the queue, bors will create a merge commit and run the [full test suite](#auto-builds) on it. The merge commit either contains only one specific PR or it can be a ["rollup"](#rollups) which - combines multiple PRs together, to save CI costs. + combines multiple PRs together, to reduce CI costs and merge delays. - Once the whole test suite finishes, two things can happen. Either CI fails with an error that needs to be addressed by the developer, or CI succeeds and the merge commit is then pushed to the `master` branch. @@ -38,12 +38,12 @@ input, which contains a declarative configuration of all our CI jobs. > orchestrating the scripts that drive the process. In essence, all CI jobs run `./x test`, `./x dist` or some other command with -different configurations, across various operating systems, targets and +different configurations, across various operating systems, targets, and platforms. There are two broad categories of jobs that are executed, `dist` and non-`dist` jobs. - Dist jobs build a full release of the compiler for a specific platform, - including all the tools we ship through rustup; Those builds are then uploaded + including all the tools we ship through rustup. Those builds are then uploaded to the `rust-lang-ci2` S3 bucket and are available to be locally installed with the [rustup-toolchain-install-master] tool. The same builds are also used for actual releases: our release process basically consists of copying those @@ -70,7 +70,7 @@ these execute the `x86_64-gnu-llvm-X`, `x86_64-gnu-tools`, `pr-check-1`, `pr-che and `tidy` jobs, all running on Linux. These execute a relatively short (~40 minutes) and lightweight test suite that should catch common issues. More specifically, they run a set of lints, they try to perform a cross-compile check -build to Windows mingw (without producing any artifacts) and they test the +build to Windows mingw (without producing any artifacts), and they test the compiler using a *system* version of LLVM. Unfortunately, it would take too many resources to run the full test suite for each commit on every PR. @@ -95,17 +95,16 @@ jobs that exercise various tests across operating systems and targets. The full test suite is quite slow; it can take several hours until all the `auto` CI jobs finish. -Most platforms only run the build steps, some run a restricted set of tests, +Most platforms only run the build steps, some run a restricted set of tests; only a subset run the full suite of tests (see Rust's [platform tiers]). Auto jobs are defined in the `auto` section of [`jobs.yml`]. They are executed -on the `auto` branch under the `rust-lang/rust` repository and -their results can be seen [here](https://github.com/rust-lang/rust/actions), -although usually you will be notified of the result by a comment made by bors on -the corresponding PR. +on the `auto` branch under the `rust-lang/rust` repository, +and the final result will be reported via a comment made by bors on the corresponding PR. +The live results can be seen on [the GitHub Actions workflows page]. At any given time, at most a single `auto` build is being executed. Find out -more [here](#merging-prs-serially-with-bors). +more in [Merging PRs serially with bors](#merging-prs-serially-with-bors). [platform tiers]: https://forge.rust-lang.org/release/platform-support.html#rust-platform-support @@ -125,7 +124,7 @@ There are several use-cases for try builds: when you start a try build). To create a try build and schedule it for a performance benchmark, you can use the `@bors try @rust-timer queue` command combination. -- Check the impact of the PR across the Rust ecosystem, using a [crater] run. +- Check the impact of the PR across the Rust ecosystem, using a [Crater](crater.md) run. Again, a working compiler build is needed for this, which can be produced by the [dist-x86_64-linux] CI job. - Run a specific CI job (e.g. Windows tests) on a PR, to quickly test if it @@ -134,11 +133,11 @@ There are several use-cases for try builds: By default, if you send a comment with `@bors try`, the jobs defined in the `try` section of [`jobs.yml`] will be executed. We call this mode a "fast try build". Such a try build will not execute any tests, and it will allow compilation warnings. It is useful when you want to -get an optimized toolchain as fast as possible, for a crater run or performance benchmarks, +get an optimized toolchain as fast as possible, for a Crater run or performance benchmarks, even if it might not be working fully correctly. If you want to do a full build for the default try job, specify its job name in a job pattern (explained below). -If you want to run custom CI job(s) in a try build and make sure that they pass all tests and do +If you want to run custom CI jobs in a try build and make sure that they pass all tests and do not produce any compilation warnings, you can select CI jobs to be executed by specifying a *job pattern*, which can be used in one of two ways: - You can add a set of `try-job: <job pattern>` directives to the PR description (described below) and then @@ -151,8 +150,9 @@ which can be used in one of two ways: Each job pattern can either be an exact name of a job or a glob pattern that matches multiple jobs, for example `*msvc*` or `*-alt`. You can start at most 20 jobs in a single try build. When using -glob patterns, you might want to wrap them in backticks (`` ` ``) to avoid GitHub rendering -the pattern as Markdown. +glob patterns in the PR description, you can optionally wrap them in backticks (`` ` ``) to avoid GitHub rendering +the pattern as Markdown if it contains e.g. an asterisk. Note that this escaping will not work when using +the `@bors jobs=` parameter. The job pattern needs to match one or more jobs defined in the `auto` or `optional` sections of [`jobs.yml`]: @@ -189,18 +189,17 @@ of [`jobs.yml`]: > that are exercised this way. Try builds are executed on the `try` branch under the `rust-lang/rust` repository and -their results can be seen [here](https://github.com/rust-lang/rust/actions), +their results can be seen on [the GitHub Actions workflows page], although usually you will be notified of the result by a comment made by bors on the corresponding PR. Multiple try builds can execute concurrently across different PRs, but there can be at most a single try build running on a single PR at any given time. -Note that try builds are handled using the new [bors][new-bors] implementation. +Note that try builds are handled using the [new bors] implementation. [rustc-perf]: https://github.com/rust-lang/rustc-perf -[crater]: https://github.com/rust-lang/crater -[new-bors]: https://github.com/rust-lang/bors +[new bors]: https://github.com/rust-lang/bors ### Modifying CI jobs @@ -210,8 +209,7 @@ If you want to modify what gets executed on our CI, you can simply modify the You can also modify what gets executed temporarily, for example to test a particular platform or configuration that is challenging to test locally (for example, if a Windows build fails, but you don't have access to a Windows -machine). Don't hesitate to use CI resources in such situations to try out a -fix! +machine). Don't hesitate to use CI resources in such situations. You can perform an arbitrary CI job in two ways: - Use the [try build](#try-builds) functionality, and specify the CI jobs that @@ -254,8 +252,8 @@ purposes. </div> Although you are welcome to use CI, just be conscious that this is a shared -resource with limited concurrency. Try not to enable too many jobs at once (one -or two should be sufficient in most cases). +resource with limited concurrency. Try not to enable too many jobs at once; +one or two should be sufficient in most cases. ## Merging PRs serially with bors @@ -279,12 +277,12 @@ by listening for either Commit Statuses or Check Runs. Since the merge commit is based on the latest `master` and only one can be tested at the same time, when the results are green, `master` is fast-forwarded to that merge commit. -Unfortunately testing a single PR at the time, combined with our long CI (~2 -hours for a full run), means we can’t merge too many PRs in a single day, and a -single failure greatly impacts our throughput for the day. The maximum number of +Unfortunately, testing a single PR at a time, combined with our long CI (~2 +hours for a full run), means we can’t merge a lot of PRs in a single day, and a +single failure greatly impacts our throughput. The maximum number of PRs we can merge in a day is around ~10. -The large CI run times and requirement for a large builder pool is largely due +The long CI run times, and requirement for a large builder pool, is largely due to the fact that full release artifacts are built in the `dist-` builders. This is worth it because these release artifacts: @@ -297,12 +295,11 @@ is worth it because these release artifacts: Some PRs don’t need the full test suite to be executed: trivial changes like typo fixes or README improvements *shouldn’t* break the build, and testing every -single one of them for 2+ hours is a big waste of time. To solve this, we +single one of them for 2+ hours would be wasteful. To solve this, we regularly create a "rollup", a PR where we merge several pending trivial PRs so they can be tested together. Rollups are created manually by a team member using the "create a rollup" button on the [merge queue]. The team member uses their -judgment to decide if a PR is risky or not, and are the best tool we have at the -moment to keep the queue in a manageable state. +judgment to decide if a PR is risky or not. ## Docker @@ -315,18 +312,22 @@ platform’s custom [Docker container]. This has a lot of advantages for us: - We can use ancient build environments to ensure maximum binary compatibility, for example [using older CentOS releases][dist-x86_64-linux] on our Linux builders. -- We can avoid reinstalling tools (like QEMU or the Android emulator) every time +- We can avoid reinstalling tools (like QEMU or the Android emulator) every time, thanks to Docker image caching. -- Users can run the same tests in the same environment locally by just running - `cargo run --manifest-path src/ci/citool/Cargo.toml run-local <job-name>`, which is awesome to debug failures. Note that there are only linux docker images available locally due to licensing and +- Users can run the same tests in the same environment locally by just running this command: + + cargo run --manifest-path src/ci/citool/Cargo.toml run-local <job-name> + + This is helpful for debugging failures. + Note that there are only Linux Docker images available locally due to licensing and other restrictions. -The docker images prefixed with `dist-` are used for building artifacts while +The Docker images prefixed with `dist-` are used for building artifacts while those without that prefix run tests and checks. We also run tests for less common architectures (mainly Tier 2 and Tier 3 -platforms) in CI. Since those platforms are not x86 we either run everything -inside QEMU or just cross-compile if we don’t want to run the tests for that +platforms) in CI. Since those platforms are not x86, we either run everything +inside QEMU, or we just cross-compile if we don’t want to run the tests for that platform. These builders are running on a special pool of builders set up and maintained @@ -363,41 +364,41 @@ invalidated if one of the following changes: [ghcr.io]: https://github.com/rust-lang/rust/pkgs/container/rust-ci [Docker registry caching]: https://docs.docker.com/build/cache/backends/registry/ -### LLVM caching with sccache +### LLVM caching with Sccache -We build some C/C++ stuff in various CI jobs, and we rely on [sccache] to cache +We build some C/C++ stuff in various CI jobs, and we rely on [Sccache] to cache the intermediate LLVM artifacts. Sccache is a distributed ccache developed by Mozilla, which can use an object storage bucket as the storage backend. -With sccache there's no need to calculate the hash key ourselves. Sccache +With Sccache there's no need to calculate the hash key ourselves. Sccache invalidates the cache automatically when it detects changes to relevant inputs, such as the source code, the version of the compiler, and important environment variables. -So we just pass the sccache wrapper on top of cargo and sccache does the rest. +So we just pass the Sccache wrapper on top of Cargo and Sccache does the rest. -We store the persistent artifacts on the S3 bucket `rust-lang-ci-sccache2`. So -when the CI runs, if sccache sees that LLVM is being compiled with the same C/C++ -compiler and the LLVM source code is the same, sccache retrieves the individual +We store the persistent artifacts on the S3 bucket, `rust-lang-ci-sccache2`. So +when the CI runs, if Sccache sees that LLVM is being compiled with the same C/C++ +compiler and the LLVM source code is the same, Sccache retrieves the individual compiled translation units from S3. [sccache]: https://github.com/mozilla/sccache ## Custom tooling around CI -During the years we developed some custom tooling to improve our CI experience. +During the years, we developed some custom tooling to improve our CI experience. ### Rust Log Analyzer to show the error message in PRs The build logs for `rust-lang/rust` are huge, and it’s not practical to find -what caused the build to fail by looking at the logs. To improve the developers’ -experience we developed a bot called [Rust Log Analyzer][rla] (RLA) that -receives the build logs on failure and extracts the error message automatically, -posting it on the PR. +what caused the build to fail by looking at the logs. +We therefore developed a bot called [Rust Log Analyzer][rla] (RLA) that +receives the build logs on failure, and extracts the error message automatically, +posting it on the PR thread. The bot is not hardcoded to look for error strings, but was trained with a bunch of build failures to recognize which lines are common between builds and which are not. While the generated snippets can be weird sometimes, the bot is pretty -good at identifying the relevant lines even if it’s an error we've never seen +good at identifying the relevant lines, even if it’s an error we've never seen before. [rla]: https://github.com/rust-lang/rust-log-analyzer @@ -429,11 +430,11 @@ More information is available in the [toolstate documentation]. ## Public CI dashboard -To monitor the Rust CI, you can have a look at the [public dashboard] maintained by the infra-team. +To monitor the Rust CI, you can have a look at the [public dashboard] maintained by the infra team. These are some useful panels from the dashboard: -- Pipeline duration: check how long the auto builds takes to run. +- Pipeline duration: check how long the auto builds take to run. - Top slowest jobs: check which jobs are taking the longest to run. - Change in median job duration: check what jobs are slowest than before. Useful to detect regressions. @@ -456,8 +457,7 @@ this: 2. Choose the job you are interested in on the left-hand side. 3. Click on the gear icon and choose "View raw logs" 4. Search for the string "Configure the build" -5. All of the build settings are listed below that starting with the - `configure:` prefix. +5. All of the build settings are listed on the line with the text, `build.configure-args` [GitHub Actions]: https://github.com/rust-lang/rust/actions [`jobs.yml`]: https://github.com/rust-lang/rust/blob/master/src/ci/github-actions/jobs.yml @@ -467,3 +467,4 @@ this: [homu]: https://github.com/rust-lang/homu [merge queue]: https://bors.rust-lang.org/queue/rust [dist-x86_64-linux]: https://github.com/rust-lang/rust/blob/master/src/ci/docker/host-x86_64/dist-x86_64-linux/Dockerfile +[the GitHub Actions workflows page]: https://github.com/rust-lang/rust/actions diff --git a/src/doc/rustc-dev-guide/src/tests/codegen-backend-tests/cg_gcc.md b/src/doc/rustc-dev-guide/src/tests/codegen-backend-tests/cg_gcc.md index 4caf4c0e0ee..74dbfb7d31b 100644 --- a/src/doc/rustc-dev-guide/src/tests/codegen-backend-tests/cg_gcc.md +++ b/src/doc/rustc-dev-guide/src/tests/codegen-backend-tests/cg_gcc.md @@ -1,3 +1,56 @@ -# GCC codegen backend tests +# GCC codegen backend -TODO: please add some more information to this page. +If you ran into an error related to tests executed with the GCC codegen backend on CI, +you can use the following command to run tests locally using the GCC backend: + +```bash +./x test tests/ui --set 'rust.codegen-backends = ["llvm", "gcc"]' --test-codegen-backend gcc +``` + +Below, you can find more information about how to configure the GCC backend in bootstrap. + +## Choosing which codegen backends are built + +The `rust.codegen-backends = [...]` bootstrap option affects which codegen backends will be built and +included in the sysroot of the produced `rustc`. To use the GCC codegen backend, `"gcc"` has to +be included in this array in `bootstrap.toml`: + +```toml +rust.codegen-backends = ["llvm", "gcc"] +``` + +If you don't want to change your `bootstrap.toml` file, you can alternatively run your `x` +commands with `--set rust.codegen-backends=["llvm", "gcc"]'`. For example: + +```bash +./x build --set 'rust.codegen-backends=["llvm", "gcc"]' +``` + +The first backend in the `codegen-backends` array will determine which backend will be used as the +*default backend* of the built `rustc`. This also determines which backend will be used to compile the +stage 1 standard library (or anything built in stage 2+). To produce `rustc` that uses the GCC backend +by default, you can thus put `"gcc"` as the first element of this array: + +```bash +./x build --set 'rust.codegen-backends=["gcc"]' library +``` + +## Choosing the codegen backend used in tests + +To run compiler tests with the GCC codegen backend being used to build the test Rust programs, you can use the +`--test-codegen-backend` flag: + +```bash +./x test tests/ui --test-codegen-backend gcc +``` + +Note that in order for this to work, the tested compiler must have the GCC codegen backend available in its sysroot +directory. You can achieve that using the [instructions above](#choosing-which-codegen-backends-are-built). + +## Downloading GCC from CI + +The `gcc.download-ci-gcc` bootstrap option controls if GCC (which is a dependency of the GCC codegen backend) +will be downloaded from CI or built locally. The default value is `true`, which will download GCC from CI +if there are no local changes to the GCC sources and the given host target is available on CI. + +Note that GCC can currently only be downloaded from CI for the `x86_64-unknown-linux-gnu` target. diff --git a/src/doc/rustc-dev-guide/src/tests/compiletest.md b/src/doc/rustc-dev-guide/src/tests/compiletest.md index a4a729935fa..0234b394c2a 100644 --- a/src/doc/rustc-dev-guide/src/tests/compiletest.md +++ b/src/doc/rustc-dev-guide/src/tests/compiletest.md @@ -72,7 +72,7 @@ The following test suites are available, with links for more information: | [`mir-opt`](#mir-opt-tests) | Check MIR generation and optimizations | | [`coverage`](#coverage-tests) | Check coverage instrumentation | | [`coverage-run-rustdoc`](#coverage-tests) | `coverage` tests that also run instrumented doctests | -| [`crashes`](#crashes-tests) | Check that the compiler ICEs/panics/crashes on certain inputs to catch accidental fixes | +| [`crashes`](#crash-tests) | Check that the compiler ICEs/panics/crashes on certain inputs to catch accidental fixes | ### General purpose test suite @@ -557,7 +557,7 @@ only running the main `coverage` suite. [`src/tools/coverage-dump`]: https://github.com/rust-lang/rust/tree/master/src/tools/coverage-dump [`tests/coverage-run-rustdoc`]: https://github.com/rust-lang/rust/tree/master/tests/coverage-run-rustdoc -### Crashes tests +### Crash tests [`tests/crashes`] serve as a collection of tests that are expected to cause the compiler to ICE, panic or crash in some other way, so that accidental fixes are @@ -580,13 +580,13 @@ recommended to include test cases from several issues in a single PR. When you do so, each issue number should be noted in the file name (`12345.rs` should suffice) and also inside the file by means of a `//@ known-bug: #12345` directive. Please [label][labeling] the relevant issues with `S-bug-has-test` -afterwards. +once your PR is merged. If you happen to fix one of the crashes, please move it to a fitting subdirectory in `tests/ui` and give it a meaningful name. Please add a doc comment at the top of the file explaining why this test exists, even better if you can briefly explain how the example causes rustc to crash previously and -what was done to prevent rustc to ICE/panic/crash. +what was done to prevent rustc to ICE / panic / crash. Adding diff --git a/src/doc/rustc-dev-guide/src/tests/crater.md b/src/doc/rustc-dev-guide/src/tests/crater.md index 9d4ac87daf3..96bb5a4f2ae 100644 --- a/src/doc/rustc-dev-guide/src/tests/crater.md +++ b/src/doc/rustc-dev-guide/src/tests/crater.md @@ -8,30 +8,30 @@ stable compiler versions. ## When to run Crater -You should request a crater run if your PR makes large changes to the compiler +You should request a Crater run if your PR makes large changes to the compiler or could cause breakage. If you are unsure, feel free to ask your PR's reviewer. ## Requesting Crater Runs -The rust team maintains a few machines that can be used for running crater runs -on the changes introduced by a PR. If your PR needs a crater run, leave a +The Rust team maintains a few machines that can be used for Crater runs +on the changes introduced by a PR. If your PR needs a Crater run, leave a comment for the triage team in the PR thread. Please inform the team whether you -require a "check-only" crater run, a "build only" crater run, or a -"build-and-test" crater run. The difference is primarily in time; the -conservative (if you're not sure) option is to go for the build-and-test run. If +require a "check-only" Crater run, a "build only" Crater run, or a +"build-and-test" Crater run. The difference is primarily in time; +if you're not sure, go for the build-and-test run. If making changes that will only have an effect at compile-time (e.g., implementing -a new trait) then you only need a check run. +a new trait), then you only need a check run. Your PR will be enqueued by the triage team and the results will be posted when -they are ready. Check runs will take around ~3-4 days, with the other two taking +they are ready. Check runs will take around ~3-4 days, and the other two taking 5-6 days on average. -While crater is really useful, it is also important to be aware of a few +While Crater is really useful, it is also important to be aware of a few caveats: - Not all code is on crates.io! There is a lot of code in repos on GitHub and elsewhere. Also, companies may not wish to publish their code. Thus, a - successful crater run is not a magically green light that there will be no + successful Crater run does not mean there will be no breakage; you still need to be careful. - Crater only runs Linux builds on x86_64. Thus, other architectures and @@ -41,5 +41,5 @@ caveats: the crate doesn't compile any more (e.g. used old nightly features), has broken or flaky tests, requires network access, or other reasons. -- Before crater can be run, `@bors try` needs to succeed in building artifacts. - This means that if your code doesn't compile, you cannot run crater. +- Before Crater can be run, `@bors try` needs to succeed in building artifacts. + This means that if your code doesn't compile, you cannot run Crater. diff --git a/src/doc/rustc-dev-guide/src/tracing.md b/src/doc/rustc-dev-guide/src/tracing.md index 5e5b81fc65b..a7cdab73e79 100644 --- a/src/doc/rustc-dev-guide/src/tracing.md +++ b/src/doc/rustc-dev-guide/src/tracing.md @@ -109,7 +109,7 @@ Miri, use `MIRI_LOG` instead. You get the idea :) See the [`tracing`] crate's docs, and specifically the docs for [`debug!`] to see the full syntax you can use. (Note: unlike the compiler, the [`tracing`] -crate and its examples use the `RUST_LOG` environment variable. rustc, rustdoc, +crate and its examples use the `RUSTC_LOG` environment variable. rustc, rustdoc, and other tools set custom environment variables.) **Note that unless you use a very strict filter, the logger will emit a lot of diff --git a/src/doc/rustc/src/SUMMARY.md b/src/doc/rustc/src/SUMMARY.md index e4bf33dd8a0..67882bb3813 100644 --- a/src/doc/rustc/src/SUMMARY.md +++ b/src/doc/rustc/src/SUMMARY.md @@ -52,7 +52,6 @@ - [aarch64_be-unknown-none-softfloat](platform-support/aarch64_be-unknown-none-softfloat.md) - [aarch64_be-unknown-linux-musl](platform-support/aarch64_be-unknown-linux-musl.md) - [amdgcn-amd-amdhsa](platform-support/amdgcn-amd-amdhsa.md) - - [armeb-unknown-linux-gnueabi](platform-support/armeb-unknown-linux-gnueabi.md) - [arm-none-eabi](platform-support/arm-none-eabi.md) - [armv4t-none-eabi](platform-support/armv4t-none-eabi.md) - [armv5te-none-eabi](platform-support/armv5te-none-eabi.md) @@ -65,12 +64,14 @@ - [thumbv7m-none-eabi](./platform-support/thumbv7m-none-eabi.md) - [thumbv8m.base-none-eabi](./platform-support/thumbv8m.base-none-eabi.md) - [thumbv8m.main-none-eabi\*](./platform-support/thumbv8m.main-none-eabi.md) - - [armv5te-unknown-linux-gnueabi](platform-support/armv5te-unknown-linux-gnueabi.md) + - [arm\*-unknown-linux-\*](./platform-support/arm-linux.md) + - [armeb-unknown-linux-gnueabi](platform-support/armeb-unknown-linux-gnueabi.md) + - [armv5te-unknown-linux-gnueabi](platform-support/armv5te-unknown-linux-gnueabi.md) + - [armv7-unknown-linux-uclibceabi](platform-support/armv7-unknown-linux-uclibceabi.md) + - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md) - [armv6k-nintendo-3ds](platform-support/armv6k-nintendo-3ds.md) - [armv7-rtems-eabihf](platform-support/armv7-rtems-eabihf.md) - [armv7-sony-vita-newlibeabihf](platform-support/armv7-sony-vita-newlibeabihf.md) - - [armv7-unknown-linux-uclibceabi](platform-support/armv7-unknown-linux-uclibceabi.md) - - [armv7-unknown-linux-uclibceabihf](platform-support/armv7-unknown-linux-uclibceabihf.md) - [armv7a-vex-v5](platform-support/armv7a-vex-v5.md) - [\*-android and \*-androideabi](platform-support/android.md) - [\*-linux-ohos](platform-support/openharmony.md) @@ -120,6 +121,7 @@ - [\*-unknown-hermit](platform-support/hermit.md) - [\*-unknown-freebsd](platform-support/freebsd.md) - [\*-unknown-managarm-mlibc](platform-support/managarm.md) + - [\*-unknown-motor](platform-support/motor.md) - [\*-unknown-netbsd\*](platform-support/netbsd.md) - [\*-unknown-openbsd](platform-support/openbsd.md) - [\*-unknown-redox](platform-support/redox.md) diff --git a/src/doc/rustc/src/codegen-options/index.md b/src/doc/rustc/src/codegen-options/index.md index 445b10188e3..0e340de4daa 100644 --- a/src/doc/rustc/src/codegen-options/index.md +++ b/src/doc/rustc/src/codegen-options/index.md @@ -471,11 +471,13 @@ If not specified, overflow checks are enabled if This option lets you control what happens when the code panics. * `abort`: terminate the process upon panic +* `immediate-abort`: terminate the process upon panic, and do not call any panic hooks * `unwind`: unwind the stack upon panic If not specified, the default depends on the target. If any crate in the crate graph uses `abort`, the final binary (`bin`, `dylib`, `cdylib`, `staticlib`) must also use `abort`. +If any crate in the crate graph uses `immediate-abort`, every crate in the graph must use `immediate-abort`. If `std` is used as a `dylib` with `unwind`, the final binary must also use `unwind`. ## passes diff --git a/src/doc/rustc/src/linker-plugin-lto.md b/src/doc/rustc/src/linker-plugin-lto.md index ab95aa2e5a1..32e712a48d7 100644 --- a/src/doc/rustc/src/linker-plugin-lto.md +++ b/src/doc/rustc/src/linker-plugin-lto.md @@ -144,7 +144,7 @@ def minor_version(version): INSTALL_TOOLCHAIN = ["rustup", "toolchain", "install", "--profile", "minimal"] subprocess.run(INSTALL_TOOLCHAIN + ["nightly"]) -LOWER_BOUND = 73 +LOWER_BOUND = 87 NIGHTLY_VERSION = minor_version(subprocess.run( ["rustc", "+nightly", "--version"], capture_output=True, @@ -201,6 +201,9 @@ The following table shows known good combinations of toolchain versions. | 1.65 - 1.69 | 15 | | 1.70 - 1.72 | 16 | | 1.73 - 1.77 | 17 | -| 1.78 | 18 | +| 1.78 - 1.81 | 18 | +| 1.82 - 1.86 | 19 | +| 1.87 - 1.90 | 20 | +| 1.91 - 1.92 | 21 | Note that the compatibility policy for this feature might change in the future. diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md index 99c8e365f5c..d0b6ed51bc1 100644 --- a/src/doc/rustc/src/platform-support.md +++ b/src/doc/rustc/src/platform-support.md @@ -156,8 +156,6 @@ target | std | notes `arm-unknown-linux-musleabi` | ✓ | Armv6 Linux with musl 1.2.3 `arm-unknown-linux-musleabihf` | ✓ | Armv6 Linux with musl 1.2.3, hardfloat [`arm64ec-pc-windows-msvc`](platform-support/arm64ec-pc-windows-msvc.md) | ✓ | Arm64EC Windows MSVC -[`armebv7r-none-eabi`](platform-support/armebv7r-none-eabi.md) | * | Bare Armv7-R, Big Endian -[`armebv7r-none-eabihf`](platform-support/armebv7r-none-eabi.md) | * | Bare Armv7-R, Big Endian, hardfloat [`armv5te-unknown-linux-gnueabi`](platform-support/armv5te-unknown-linux-gnueabi.md) | ✓ | Armv5TE Linux (kernel 4.4+, glibc 2.23) `armv5te-unknown-linux-musleabi` | ✓ | Armv5TE Linux with musl 1.2.3 [`armv7-linux-androideabi`](platform-support/android.md) | ✓ | Armv7-A Android @@ -283,6 +281,8 @@ target | std | host | notes [`arm64e-apple-ios`](platform-support/arm64e-apple-ios.md) | ✓ | | ARM64e Apple iOS [`arm64e-apple-tvos`](platform-support/arm64e-apple-tvos.md) | ✓ | | ARM64e Apple tvOS [`armeb-unknown-linux-gnueabi`](platform-support/armeb-unknown-linux-gnueabi.md) | ✓ | ? | Arm BE8 the default Arm big-endian architecture since [Armv6](https://developer.arm.com/documentation/101754/0616/armlink-Reference/armlink-Command-line-Options/--be8?lang=en). +[`armebv7r-none-eabi`](platform-support/armebv7r-none-eabi.md) | * | Bare Armv7-R, Big Endian +[`armebv7r-none-eabihf`](platform-support/armebv7r-none-eabi.md) | * | Bare Armv7-R, Big Endian, hardfloat [`armv4t-none-eabi`](platform-support/armv4t-none-eabi.md) | * | | Bare Armv4T `armv4t-unknown-linux-gnueabi` | ? | | Armv4T Linux [`armv5te-none-eabi`](platform-support/armv5te-none-eabi.md) | * | | Bare Armv5TE @@ -431,7 +431,7 @@ target | std | host | notes `x86_64-unknown-l4re-uclibc` | ? | | [`x86_64-unknown-linux-none`](platform-support/x86_64-unknown-linux-none.md) | * | | 64-bit Linux with no libc [`x86_64-unknown-managarm-mlibc`](platform-support/managarm.md) | ? | | x86_64 Managarm -[`x86_64-unknown-motor`[(platform-support/motor.md) | ? | | x86_64 Motor OS +[`x86_64-unknown-motor`](platform-support/motor.md) | ? | | x86_64 Motor OS [`x86_64-unknown-openbsd`](platform-support/openbsd.md) | ✓ | ✓ | 64-bit OpenBSD [`x86_64-unknown-trusty`](platform-support/trusty.md) | ✓ | | `x86_64-uwp-windows-gnu` | ✓ | | diff --git a/src/doc/rustc/src/platform-support/apple-ios-macabi.md b/src/doc/rustc/src/platform-support/apple-ios-macabi.md index c6f68f7a1e8..0d0acaa3bef 100644 --- a/src/doc/rustc/src/platform-support/apple-ios-macabi.md +++ b/src/doc/rustc/src/platform-support/apple-ios-macabi.md @@ -57,7 +57,7 @@ $ rustc --target aarch64-apple-ios-macabi your-code.rs ``` The target can be differentiated from the iOS targets with the -`target_env = "macabi"` cfg (or `target_abi = "macabi"` before Rust CURRENT_RUSTC_VERSION). +`target_env = "macabi"` cfg (or `target_abi = "macabi"` before Rust 1.91.0). ```rust if cfg!(target_env = "macabi") { diff --git a/src/doc/rustc/src/platform-support/apple-ios.md b/src/doc/rustc/src/platform-support/apple-ios.md index 3ac14704754..5de87dc349e 100644 --- a/src/doc/rustc/src/platform-support/apple-ios.md +++ b/src/doc/rustc/src/platform-support/apple-ios.md @@ -73,7 +73,7 @@ $ cargo +nightly build -Zbuild-std --target armv7s-apple-ios The simulator variants can be differentiated from the variants running on-device with the `target_env = "sim"` cfg (or `target_abi = "sim"` before -Rust CURRENT_RUSTC_VERSION). +Rust 1.91.0). ```rust if cfg!(all(target_vendor = "apple", target_env = "sim")) { diff --git a/src/doc/rustc/src/platform-support/arm-linux.md b/src/doc/rustc/src/platform-support/arm-linux.md new file mode 100644 index 00000000000..5f40743f3d0 --- /dev/null +++ b/src/doc/rustc/src/platform-support/arm-linux.md @@ -0,0 +1,217 @@ +# Arm Linux support in Rust + +The Arm Architecture has been around since the mid-1980s, going through nine +major revisions, many minor revisions, and spanning both 32-bith and 64-bit +architectures. This page covers 32-bit Arm platforms that run some form of +Linux (but not Android). Those targets are: + +* `arm-unknown-linux-gnueabi` +* `arm-unknown-linux-gnueabihf` +* `arm-unknown-linux-musleabi` +* `arm-unknown-linux-musleabihf` +* [`armeb-unknown-linux-gnueabi`](armeb-unknown-linux-gnueabi.md) +* `armv4t-unknown-linux-gnueabi` +* [`armv5te-unknown-linux-gnueabi`](armv5te-unknown-linux-gnueabi.md) +* `armv5te-unknown-linux-musleabi` +* `armv5te-unknown-linux-uclibceabi` +* `armv7-unknown-linux-gnueabi` +* `armv7-unknown-linux-gnueabihf` +* `armv7-unknown-linux-musleabi` +* `armv7-unknown-linux-musleabihf` +* `armv7-unknown-linux-ohos` +* [`armv7-unknown-linux-uclibceabi`](armv7-unknown-linux-uclibceabi.md) +* [`armv7-unknown-linux-uclibceabihf`](armv7-unknown-linux-uclibceabihf.md) +* `thumbv7neon-unknown-linux-gnueabihf` +* `thumbv7neon-unknown-linux-musleabihf` + +Some of these targets have dedicated pages and some do not. This is largely +due to historical accident, or the enthusiasm of the maintainers. This +document attempts to cover all the targets, but only in broad terms. + +To make sense of this list, the architecture and ABI component of the +`<architecture>-unknown-linux-<abi>` tuple will be discussed separately. + +The second part of the tuple is `unknown` because these systems don't come +from any one specific vendor (like `powerpc-ibm-aix` or +`aarch64-apple-darwin`). The third part is `linux`, because this page only +discusses Linux targets. + +## Architecture Component + +* `arm` +* `armeb` +* `armv4t` +* `armv5te` +* `armv7` +* `thumbv7neon` + +The architecture component simply called `arm` corresponds to the Armv6 +architecture - that is, version 6 of the Arm Architecture as defined in +version 6 of the Arm Architecture Reference Manual (the Arm ARM). This was the +last 'legacy' release of the Arm architecture, before they split into +Application, Real-Time and Microcontroller profiles (leading to Armv7-A, +Armv7-R and Armv7-M). Processors that implement the Armv6 architecture include +the ARM1176JZF-S, as found in BCM2835 SoC that powers the Raspberry Pi Zero. +Arm processors are generally fairly backwards compatible, especially for +user-mode code, so code compiled for the `arm` architecture should also work +on newer ARMv7-A systems, or even 64/32-bit Armv8-A systems. + +The `armeb` architecture component specifies an Armv6 processor running in Big +Endian mode (`eb` is for big-endian - the letters are backwards because +engineers used to little-endian systems perceive big-endian numbers to be +written into memory backwards, and they thought it was funnier like that). +Most Arm processors can operate in either little-endian or big-endian mode and +little-endian mode is by far the most common. However, if for whatever reason +you wish to store your Most Significant Bytes first, these targets are +available. They just aren't terribly well tested, or compatible with most +existing pre-compiled Arm libraries. + +Targets that start with `armv4t` are for processors implementing the Armv4T +architecture from 1994. These include the ARM7TDMI, as found in the Nokia 6110 +brick-phone and the Game Boy Advance. The 'T' stands for *Thumb* and indicate +that the processors can execute smaller 16-bit versions of some of the 32-bit +Arm instructions. Because a Thumb is like a small version of an Arm. + +Targets that start with `armv5te` are for processors implementing the Armv5TE +architecture. These are mostly from the ARM9 family, like the ARM946E-S found +in the Nintendo DS. If you are programming an Arm machine from the early +2000s, this might be what you need. + +The `armv7` is arguably a misnomer, and it should be `armv7a`. This is because +it corresponds to the Application profile of Armv7 (i.e. Armv7-A), as opposed +to the Real-Time or Microcontroller profile. Processors implementing this +architecture include the Cortex-A7 and Cortex-A8. + +The `thumbv7neon` component indicates support for a processor that implements +ARMv7-A (the same as `armv7`), it generates Thumb instructions (technically +Thumb-2, also known as the T32 ISA) as opposed to Arm instructions (also known +as the A32 ISA). These instructions are smaller, giving more code per KB of +RAM, but may have a performance penalty if they take two instructions to do +something Arm instructions could do in one. It's a complex trade-off and you +should be doing benchmarks to work out which is better for you, if you +strongly care about code size and/or performance. This component also enables +support for Arm's SIMD extensions, known as Neon. These extensions will +improve performance for certain kinds of repetitive operations. + +## ABI Component + +* `gnueabi` +* `gnueabihf` +* `musleabi` +* `musleabihf` +* `ohos` +* `uclibceabi` +* `uclibceabihf` + +You will need to select the appropriate ABI to match the system you want to be +running this code on. For example, running `eabihf` code on an `eabi` system +will not work correctly. + +The `gnueabi` ABI component indicates support for using the GNU C Library +(glibc), and the Arm Embedded ABI (EABI). The EABI is a replacement for the +original ABI (now called the Old ABI or OABI), and it is the standard ABI for +32-bit Arm systems. With this ABI, function parameters that are `f32` or `f64` +are passed as if they were integers, instead of being passed via in FPU +registers. Generally these targets also disable the use of the FPU entirely, +although that isn't always true. + +The `gnueabihf` ABI component is like `gnueabi`, except that it support the +'hard-float' of the EABI. That is, function parameters that are `f32` or `f64` +are passed in FPU registers. Naturally, this makes the FPU mandatory. + +Most 'desktop' Linux distributions (Debian, Ubuntu, Fedora, etc) use the GNU C +Library and so you should probably select either `gnueabi` or `gnueabihf`, +depending on whether your distribution is using 'soft-float' (EABI) or +'hard-float' (EABIHF). Debian happens to offer +[both](https://wiki.debian.org/ArmEabiPort) +[kinds](https://wiki.debian.org/ArmHardFloatPort). + +The `musleabi` and `musleabihf` ABI components offer support for the [musl C +library](https://musl.libc.org/). This C library can be used to create 'static +binaries' that have no run-time library requirements (a feature that glibc +does not support). There are soft-float (`eabi`) and hard-float (`eabihf`) +variants, as per the `gnu*` targets above. + +The `uclibceabi` and `uclibceabihf` ABI components are for the [uClibc-ng C +library](https://uclibc-ng.org/). This is sometimes used in light-weight +embedded Linux distributions, like those created with +[buildroot](https://www.buildroot.org/). + +## Cross Compilation + +Unfortunately, 32-bit Arm machines are generally not the fastest around, and +they don't have much RAM. This means you are likely to be cross-compiling. + +To do this, you need to give Rust a suitable linker to use - one that knows +the Arm architecture, and more importantly, knows where to find a suitable C +Library to link against. + +To do that, you can add the `linker` property to your `.cargo/config.toml`. +Typically you would refer to a suitable copy of GCC that has built as a +cross-compiler, alongside a C library. + +```toml +[target.arm-unknown-linux-gnueabi] +linker = "arm-linux-gnueabi-gcc" +``` + +On Debian Linux, you could install such a cross-compilation toolchain with +`apt install gcc-arm-linux-gnueabi`. For more exotic combinations, you might +need to build a bespoke version of GCC using [crosstool-ng]. + +[crosstool-ng]: https://github.com/crosstool-ng/crosstool-ng + +Note that for GCC, all 32-bit Arm architectures are handled in the same build +- there are no separate Armv4T or Armv6 builds of GCC. The architecture is +selected with flags, like `-march=armv6`, but they aren't required for the +linker. + +Let's assume we are on some Debian machine, and we want to build a basic Arm +Linux binary for a distribution using the GNU C Library, targeting Armv6 with +a hard-float ABI. Such a binary should work on a Raspberry Pi, for example. +The commands are: + +```bash +sudo apt install -y gcc-arm-linux-gnueabihf +rustup target add arm-unknown-linux-gnueabihf +cargo new --bin armdemo +cd armdemo +mkdir .cargo +cat > .cargo/config.toml << EOF +[target.arm-unknown-linux-gnueabihf] +linker = "arm-linux-gnueabihf-gcc" +EOF +cargo build --target=arm-unknown-linux-gnueabihf +``` + +This will give us our ARM Linux binary for the GNU C Library with a soft-float ABI: + +```console +$ file ./target/arm-unknown-linux-gnueabi/debug/armdemo +./target/arm-unknown-linux-gnueabi/debug/armdemo: ELF 32-bit LSB pie + executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter + /lib/ld-linux.so.3, BuildID[sha1]=dd0b9aa5ae876330fd4e2fcf393850f083ec7fcd, + for GNU/Linux 3.2.0, with debug_info, not stripped +``` + +If you are building C code as part of your Rust project, you may want to +direct `cc-rs` to use an appropriate cross-compiler with the `CROSS_COMPILE` +environment variable. You may also want to set the CFLAGS environment variable +for the target. For example: + +```bash +export CROSS_COMPILE=arm-linux-gnueabi +export CFLAGS_arm_unknown_linux_gnueabi="-march=armv6" +``` + +(Note that the dashes (`-`) turn to underscores (`_`) to form the name of the +CFLAGS environment variable) + +If you are building for a Tier 3 target using `-Zbuild-std` (on Nightly Rust), +you need to set these variables as well: + +```bash +export CXX_arm_unknown_linux_gnueabi=arm-linux-gnueabi-g++ +export CC_arm_unknown_linux_gnueabi=arm-linux-gnueabi-gcc +cargo +nightly build -Zbuild-std --target=arm-unknown-linux-gnueabi +``` diff --git a/src/doc/rustc/src/platform-support/armeb-unknown-linux-gnueabi.md b/src/doc/rustc/src/platform-support/armeb-unknown-linux-gnueabi.md index 7c1c5db7076..cd0623f73a1 100644 --- a/src/doc/rustc/src/platform-support/armeb-unknown-linux-gnueabi.md +++ b/src/doc/rustc/src/platform-support/armeb-unknown-linux-gnueabi.md @@ -3,6 +3,9 @@ Target for cross-compiling Linux user-mode applications targeting the Arm BE8 architecture. +See [`arm-linux`](arm-linux.md) for information applicable to all Arm Linux +targets. + ## Overview BE8 architecture retains the same little-endian ordered code-stream used by conventional little endian Arm systems, however the data accesses are in big-endian. BE8 is used primarily in high-performance networking applications where the ability to read packets in their native "Network Byte Order" is important (many network protocols transmit data in big-endian byte order for their wire formats). diff --git a/src/doc/rustc/src/platform-support/armebv7r-none-eabi.md b/src/doc/rustc/src/platform-support/armebv7r-none-eabi.md index 3e90319c373..d5c676ea9a4 100644 --- a/src/doc/rustc/src/platform-support/armebv7r-none-eabi.md +++ b/src/doc/rustc/src/platform-support/armebv7r-none-eabi.md @@ -1,6 +1,6 @@ # `armebv7r-none-eabi` and `armebv7r-none-eabihf` -* **Tier: 2** +* **Tier: 3** * **Library Support:** core and alloc (bare-metal, `#![no_std]`) Bare-metal target for CPUs in the Armv7-R architecture family running in Big diff --git a/src/doc/rustc/src/platform-support/armv5te-unknown-linux-gnueabi.md b/src/doc/rustc/src/platform-support/armv5te-unknown-linux-gnueabi.md index 0aebbc34d40..a924f476411 100644 --- a/src/doc/rustc/src/platform-support/armv5te-unknown-linux-gnueabi.md +++ b/src/doc/rustc/src/platform-support/armv5te-unknown-linux-gnueabi.md @@ -5,6 +5,9 @@ This target supports Linux programs with glibc on ARMv5TE CPUs without floating-point units. +See [`arm-linux`](arm-linux.md) for information applicable to all Arm Linux +targets. + ## Target maintainers There are currently no formally documented target maintainers. diff --git a/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabi.md b/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabi.md index e553c49589d..4ab0a07090a 100644 --- a/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabi.md +++ b/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabi.md @@ -4,6 +4,9 @@ This target supports Armv7-A softfloat CPUs and uses the uclibc-ng standard library. This is a common configuration on many consumer routers (e.g., Netgear R7000, Asus RT-AC68U). +See [`arm-linux`](arm-linux.md) for information applicable to all Arm Linux +targets. + ## Target maintainers [@lancethepants](https://github.com/lancethepants) diff --git a/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabihf.md b/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabihf.md index 91f3ea886cc..9fb24906b4f 100644 --- a/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabihf.md +++ b/src/doc/rustc/src/platform-support/armv7-unknown-linux-uclibceabihf.md @@ -4,6 +4,9 @@ This tier supports the Armv7-A processor running a Linux kernel and uClibc-ng standard library. It provides full support for rust and the rust standard library. +See [`arm-linux`](arm-linux.md) for information applicable to all Arm Linux +targets. + ## Target Maintainers [@skrap](https://github.com/skrap) diff --git a/src/doc/rustc/src/platform-support/armv7a-vex-v5.md b/src/doc/rustc/src/platform-support/armv7a-vex-v5.md index a7da1b16f7e..3677f8931dd 100644 --- a/src/doc/rustc/src/platform-support/armv7a-vex-v5.md +++ b/src/doc/rustc/src/platform-support/armv7a-vex-v5.md @@ -4,7 +4,7 @@ Allows compiling user programs for the [VEX V5 Brain](https://www.vexrobotics.com/276-4810.html), a microcontroller for educational and competitive robotics. -Rust support for this target is not affiliated with VEX Robotics or IFI. +Rust support for this target is not affiliated with VEX Robotics or IFI, and does not link to any official VEX SDK. ## Target maintainers @@ -17,11 +17,24 @@ This target is maintained by members of the [vexide](https://github.com/vexide) ## Requirements -This target is cross-compiled and currently requires `#![no_std]`. Dynamic linking is unsupported. +This target is cross-compiled. Dynamic linking is unsupported. -When compiling for this target, the "C" calling convention maps to AAPCS with VFP registers (hard float ABI) and the "system" calling convention maps to AAPCS without VFP registers (soft float ABI). +`#![no_std]` crates can be built using `build-std` to build `core` and `panic_abort` and optionally `alloc`. Unwinding panics are not yet supported on this target. -This target generates binaries in the ELF format that may uploaded to the brain with external tools. +`std` has only partial support due platform limitations. Notably: +- `std::process` and `std::net` are unimplemented. `std::thread` only supports sleeping and yielding, as this is a single-threaded environment. +- `std::time` has full support for `Instant`, but no support for `SystemTime`. +- `std::io` has full support for `stdin`/`stdout`/`stderr`. `stdout` and `stderr` both write to to USB channel 1 on this platform and are not differentiated. +- `std::fs` has limited support for reading or writing to files. Directory operations, file deletion, and some file opening features are unsupported and will return errors. +- A global allocator implemented on top of `dlmalloc` is provided. +- Modules that do not need to interact with the OS beyond allocation such as `std::collections`, `std::hash`, `std::future`, `std::sync`, etc are fully supported. +- Random number generation and hashing is insecure, as there is no reliable source of entropy on this platform. + +In order to support some APIs, users are expected to provide a supporting runtime SDK for `libstd` to link against. This library may be provided either by [`vex-sdk-build`](https://github.com/vexide/vex-sdk/tree/main/packages/vex-sdk-build) (which will download an official SDK from VEX) or through an open-source implementation such as [`vex-sdk-jumptable`](https://crates.io/crates/vex-sdk-jumptable). + +When compiling for this target, the "C" calling convention maps to AAPCS with VFP registers (hard float ABI) and the "system" calling convention maps to AAPCS without VFP registers (softfp ABI). + +This target generates binaries in the ELF format that may be uploaded to the brain with external tools. ## Building the target @@ -29,10 +42,7 @@ You can build Rust with support for this target by adding it to the `target` lis ## Building Rust programs -Rust does not yet ship pre-compiled artifacts for this target. To compile for -this target, you will either need to build Rust with the target enabled (see -"Building the target" above), or build your own copy of `core` by using -`build-std` or similar. +Rust does not yet ship pre-compiled artifacts for this target. To compile for this target, you will either need to build Rust with the target enabled (see "Building the target" above), or build your own copy of `core` by using `build-std` or similar. When the compiler builds a binary, an ELF build artifact will be produced. Additional tools are required for this artifact to be recognizable to VEXos as a user program. diff --git a/src/doc/rustc/src/symbol-mangling/v0.md b/src/doc/rustc/src/symbol-mangling/v0.md index 109942518fc..2bcc453a532 100644 --- a/src/doc/rustc/src/symbol-mangling/v0.md +++ b/src/doc/rustc/src/symbol-mangling/v0.md @@ -710,6 +710,7 @@ A *placeholder* may occur in circumstances where a type or const value is not re [mut-ptr-type]: #mut-ptr-type [fn-type]: #fn-type [dyn-trait-type]: #dyn-trait-type +[pattern-type]: #pattern-type > type → \ > *[basic-type]* \ @@ -722,6 +723,7 @@ A *placeholder* may occur in circumstances where a type or const value is not re > | *[mut-ptr-type]* \ > | *[fn-type]* \ > | *[dyn-trait-type]* \ +> | *[pattern-type]* \ > | *[path]* \ > | *[backref]* @@ -830,6 +832,23 @@ Remaining primitives are encoded as a crate production, e.g. `C4f128`. [fn-sig]: #fn-sig [abi]: #abi +* `W` — A [pattern-type][pattern-tpye] `u32 is 0..100`. + > <span id="pattern-type">pattern-type</span> → `W` *[pattern-kind]* + > + > <span id="pattern-kind">pattern-kind</span> → \ + > *[range-pattern-kind]* \ + > *[or-pattern-kind]* + > + > <span id="range-pattern-kind">range-pattern-kind</span> → `R` *[const]* *[const]* + > + > <span id="or-pattern-kind">or-pattern-kind</span> → `O` *[pattern-kind]* `E` + + While or patterns can be nested in theory, in practice this does not happen and they are instead flattened. + + Range patterns have a start and end constant that are both included in the range. + The end must be larger than the start (there can be no wraparound). To emulate wraparound, + you need to use an or pattern of the two ranges to the upper limit and from the lower limit. + * `D` — A [trait object][reference-trait-object] `dyn Trait<Assoc=X> + Send + 'a`. > <span id="dyn-trait-type">dyn-trait-type</span> → `D` *[dyn-bounds]* *[lifetime]* @@ -1139,6 +1158,7 @@ The following is a summary of all of the productions of the symbol grammar. > | *[mut-ptr-type]* \ > | *[fn-type]* \ > | *[dyn-trait-type]* \ +> | *[pattern-type]* \ > | *[path]* \ > | *[backref]* > @@ -1152,6 +1172,14 @@ The following is a summary of all of the productions of the symbol grammar. > [mut-ptr-type] → `O` *[type]* \ > [fn-type] → `F` *[fn-sig]* \ > [dyn-trait-type] → `D` *[dyn-bounds]* *[lifetime]* +> [pattern-type] → `W` *[pattern-kind]* +> +> [pattern-kind] → \ +> *[range-pattern-kind]* \ +> *[or-pattern-kind]* +> +> [range-pattern-kind] -> `R` *[const]* *[const]* \ +> [or-pattern-kind] -> `O` *[pattern-kind]* `E` \ > > [namespace] → *[lower]* | *[upper]* > diff --git a/src/doc/rustdoc/src/advanced-features.md b/src/doc/rustdoc/src/advanced-features.md index c02c9aebe7e..f49edb2ac78 100644 --- a/src/doc/rustdoc/src/advanced-features.md +++ b/src/doc/rustdoc/src/advanced-features.md @@ -89,20 +89,30 @@ https://doc.rust-lang.org/stable/std/?search=%s&go_to_first=true This URL adds the `go_to_first=true` query parameter which can be appended to any `rustdoc` search URL to automatically go to the first result. -## `#[repr(transparent)]`: Documenting the transparent representation +## `#[repr(...)]`: Documenting the representation of a type + +Generally, rustdoc only displays the representation of a given type if none of its variants are +`#[doc(hidden)]` and if all of its fields are public and not `#[doc(hidden)]` since it's likely +not meant to be considered part of the public ABI otherwise. + +Note that there's no way to overwrite that heuristic and force rustdoc to show the representation +regardless. + +### `#[repr(transparent)]` You can read more about `#[repr(transparent)]` itself in the [Rust Reference][repr-trans-ref] and in the [Rustonomicon][repr-trans-nomicon]. Since this representation is only considered part of the public ABI if the single field with non-trivial -size or alignment is public and if the documentation does not state otherwise, Rustdoc helpfully displays -the attribute if and only if the non-1-ZST field is public or at least one field is public in case all -fields are 1-ZST fields. The term *1-ZST* refers to types that are one-aligned and zero-sized. +size or alignment is public and if the documentation does not state otherwise, rustdoc helpfully displays +the attribute if and only if the non-1-ZST field is public and not `#[doc(hidden)]` or +– in case all fields are 1-ZST fields — at least one field is public and not `#[doc(hidden)]`. +The term *1-ZST* refers to types that are one-aligned and zero-sized. It would seem that one can manually hide the attribute with `#[cfg_attr(not(doc), repr(transparent))]` if one wishes to declare the representation as private even if the non-1-ZST field is public. However, due to [current limitations][cross-crate-cfg-doc], this method is not always guaranteed to work. -Therefore, if you would like to do so, you should always write it down in prose independently of whether +Therefore, if you would like to do so, you should always write that down in prose independently of whether you use `cfg_attr` or not. [repr-trans-ref]: https://doc.rust-lang.org/reference/type-layout.html#the-transparent-representation diff --git a/src/doc/rustdoc/src/unstable-features.md b/src/doc/rustdoc/src/unstable-features.md index 25c929a1dba..04d3c0cd630 100644 --- a/src/doc/rustdoc/src/unstable-features.md +++ b/src/doc/rustdoc/src/unstable-features.md @@ -56,88 +56,6 @@ It is also not emitted for foreign items, aliases, extern crates and imports. These features operate by extending the `#[doc]` attribute, and thus can be caught by the compiler and enabled with a `#![feature(...)]` attribute in your crate. -### `#[doc(cfg)]`: Recording what platforms or features are required for code to be present - - * Tracking issue: [#43781](https://github.com/rust-lang/rust/issues/43781) - -You can use `#[doc(cfg(...))]` to tell Rustdoc exactly which platform items appear on. -This has two effects: - -1. doctests will only run on the appropriate platforms, and -2. When Rustdoc renders documentation for that item, it will be accompanied by a banner explaining - that the item is only available on certain platforms. - -`#[doc(cfg)]` is intended to be used alongside [`#[cfg(doc)]`][cfg-doc]. -For example, `#[cfg(any(windows, doc))]` will preserve the item either on Windows or during the -documentation process. Then, adding a new attribute `#[doc(cfg(windows))]` will tell Rustdoc that -the item is supposed to be used on Windows. For example: - -```rust -#![feature(doc_cfg)] - -/// Token struct that can only be used on Windows. -#[cfg(any(windows, doc))] -#[doc(cfg(windows))] -pub struct WindowsToken; - -/// Token struct that can only be used on Unix. -#[cfg(any(unix, doc))] -#[doc(cfg(unix))] -pub struct UnixToken; - -/// Token struct that is only available with the `serde` feature -#[cfg(feature = "serde")] -#[doc(cfg(feature = "serde"))] -#[derive(serde::Deserialize)] -pub struct SerdeToken; -``` - -In this sample, the tokens will only appear on their respective platforms, but they will both appear -in documentation. - -`#[doc(cfg(...))]` was introduced to be used by the standard library and currently requires the -`#![feature(doc_cfg)]` feature gate. For more information, see [its chapter in the Unstable -Book][unstable-doc-cfg] and [its tracking issue][issue-doc-cfg]. - -### `doc_auto_cfg`: Automatically generate `#[doc(cfg)]` - - * Tracking issue: [#43781](https://github.com/rust-lang/rust/issues/43781) - -`doc_auto_cfg` is an extension to the `#[doc(cfg)]` feature. With it, you don't need to add -`#[doc(cfg(...)]` anymore unless you want to override the default behaviour. So if we take the -previous source code: - -```rust -#![feature(doc_auto_cfg)] - -/// Token struct that can only be used on Windows. -#[cfg(any(windows, doc))] -pub struct WindowsToken; - -/// Token struct that can only be used on Unix. -#[cfg(any(unix, doc))] -pub struct UnixToken; - -/// Token struct that is only available with the `serde` feature -#[cfg(feature = "serde")] -#[derive(serde::Deserialize)] -pub struct SerdeToken; -``` - -It'll render almost the same, the difference being that `doc` will also be displayed. To fix this, -you can use `doc_cfg_hide`: - -```rust -#![feature(doc_cfg_hide)] -#![doc(cfg_hide(doc))] -``` - -And `doc` won't show up anymore! - -[cfg-doc]: ./advanced-features.md -[unstable-doc-cfg]: ../unstable-book/language-features/doc-cfg.html -[issue-doc-cfg]: https://github.com/rust-lang/rust/issues/43781 - ### Adding your trait to the "Notable traits" dialog * Tracking issue: [#45040](https://github.com/rust-lang/rust/issues/45040) @@ -739,7 +657,7 @@ This flag can be passed multiple times to nest wrappers. ## Passing arguments to rustc when compiling doctests -You can use the `--doctest-compilation-args` flag if you want to add options when compiling the +You can use the `--doctest-build-arg` flag if you want to add options when compiling the doctest. For example if you have: ```rust,no_run @@ -784,10 +702,10 @@ failures: test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s ``` -But if you can limit the lint level to warning by using `--doctest_compilation_args=--cap-lints=warn`: +But if you can limit the lint level to warning by using `--doctest-build-arg=--cap-lints=warn`: ```console -$ rustdoc --test --doctest_compilation_args=--cap-lints=warn file.rs +$ rustdoc --test --doctest-build-arg=--cap-lints=warn file.rs running 1 test test tests/rustdoc-ui/doctest/rustflags.rs - Bar (line 5) ... ok @@ -795,25 +713,277 @@ test tests/rustdoc-ui/doctest/rustflags.rs - Bar (line 5) ... ok test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s ``` -The parsing of arguments works as follows: if it encounters a `"` or a `'`, it will continue -until it finds the character unescaped (without a prepending `\`). If not inside a string, a -whitespace character will also split arguments. Example: +In order to pass multiple arguments to the underlying compiler, +pass `--doctest-build-arg ARG` for each argument `ARG`. + +## `--generate-macro-expansion`: Generate macros expansion toggles in source code + +This flag enables the generation of toggles to expand macros in the HTML source code pages. + +## `#[doc(cfg)]` and `#[doc(auto_cfg)]` + +This feature aims at providing rustdoc users the possibility to add visual markers to the rendered documentation to know under which conditions an item is available (currently possible through the following unstable feature: `doc_cfg`). + +It does not aim to allow having a same item with different `cfg`s to appear more than once in the generated documentation. + +It does not aim to document items which are *inactive* under the current configuration (i.e., “`cfg`ed out”). + +This features adds the following attributes: + + * `#[doc(auto_cfg)]`/`#[doc(auto_cfg = true)]`/`#[doc(auto_cfg = false)]` + * `#[doc(cfg(...))]` + * `#![doc(auto_cfg(hide(...)))]` / `#[doc(auto_cfg(show(...)))]` + +All of these attributes can be added to a module or to the crate root, and they will be inherited by the child items unless another attribute overrides it. This is why "opposite" attributes like `auto_cfg(hide(...))` and `auto_cfg(show(...))` are provided: they allow a child item to override its parent. + +### `#[doc(cfg(...))]` + +This attribute provides a standardized format to override `#[cfg()]` attributes to document conditionally available items. Example: + +```rust,ignore (nightly) +// the "real" cfg condition +#[cfg(feature = "futures-io")] +// the `doc(cfg())` so it's displayed to the readers +#[doc(cfg(feature = "futures-io"))] +pub mod futures {} +``` + +It will display in the documentation for this module: ```text -"hello 'a'\" ok" how are 'you today?' +This is supported on feature="futures-io" only. +``` + +You can use it to display information in generated documentation, whether or not there is a `#[cfg()]` attribute: + +```rust,ignore (nightly) +#[doc(cfg(feature = "futures-io"))] +pub mod futures {} +``` + +It will be displayed exactly the same as the previous code. + +This attribute has the same syntax as conditional compilation, but it only causes documentation to be added. This means `#[doc(cfg(not(windows)))]` will not cause your docs to be hidden on non-windows targets, even though `#[cfg(not(windows))]` does do that. + +If `doc(auto_cfg)` is enabled on the item, `doc(cfg)` will override it anyway so in the two previous examples, even if the `doc(auto_cfg)` feature was enabled, it would still display the same thing. + +This attribute works on modules and on items. + +### `#[doc(auto_cfg(hide(...)))]` + +This attribute is used to prevent some `cfg` to be generated in the visual markers. It only applies to `#[doc(auto_cfg = true)]`, not to `#[doc(cfg(...))]`. So in the previous example: + +```rust,ignore (nightly) +#[cfg(any(unix, feature = "futures-io"))] +pub mod futures {} +``` + +It currently displays both `unix` and `feature = "futures-io"` into the documentation, which is not great. To prevent the `unix` cfg to ever be displayed, you can use this attribute at the crate root level: + +```rust,ignore (nightly) +#![doc(auto_cfg(hide(unix)))] +``` + +Or directly on a given item/module as it covers any of the item's descendants: + +```rust,ignore (nightly) +#[doc(auto_cfg(hide(unix)))] +#[cfg(any(unix, feature = "futures-io"))] +pub mod futures { + // `futures` and all its descendants won't display "unix" in their cfgs. +} ``` -will be split as follows: +Then, the `unix` cfg will never be displayed into the documentation. + +Rustdoc currently hides `doc` and `doctest` attributes by default and reserves the right to change the list of "hidden by default" attributes. + +The attribute accepts only a list of identifiers or key/value items. So you can write: + +```rust,ignore (nightly) +#[doc(auto_cfg(hide(unix, doctest, feature = "something")))] +#[doc(auto_cfg(hide()))] +``` + +But you cannot write: + +```rust,ignore (nightly) +#[doc(auto_cfg(hide(not(unix))))] +``` + +So if we use `doc(auto_cfg(hide(unix)))`, it means it will hide all mentions of `unix`: + +```rust,ignore (nightly) +#[cfg(unix)] // nothing displayed +#[cfg(any(unix))] // nothing displayed +#[cfg(any(unix, windows))] // only `windows` displayed +``` + +However, it only impacts the `unix` cfg, not the feature: + +```rust,ignore (nightly) +#[cfg(feature = "unix")] // `feature = "unix"` is displayed +``` + +If `cfg_auto(show(...))` and `cfg_auto(hide(...))` are used to show/hide a same `cfg` on a same item, it'll emit an error. Example: + +```rust,ignore (nightly) +#[doc(auto_cfg(hide(unix)))] +#[doc(auto_cfg(show(unix)))] // Error! +pub fn foo() {} +``` + +Using this attribute will re-enable `auto_cfg` if it was disabled at this location: + +```rust,ignore (nightly) +#[doc(auto_cfg = false)] // Disabling `auto_cfg` +pub fn foo() {} +``` + +And using `doc(auto_cfg)` will re-enable it: + +```rust,ignore (nightly) +#[doc(auto_cfg = false)] // Disabling `auto_cfg` +pub mod module { + #[doc(auto_cfg(hide(unix)))] // `auto_cfg` is re-enabled. + pub fn foo() {} +} +``` + +However, using `doc(auto_cfg = ...)` and `doc(auto_cfg(...))` on the same item will emit an error: + +```rust,ignore (nightly) +#[doc(auto_cfg = false)] +#[doc(auto_cfg(hide(unix)))] // error +pub fn foo() {} +``` + +The reason behind this is that `doc(auto_cfg = ...)` enables or disables the feature, whereas `doc(auto_cfg(...))` enables it unconditionally, making the first attribute to appear useless as it will be overidden by the next `doc(auto_cfg)` attribute. + +### `#[doc(auto_cfg(show(...)))]` + +This attribute does the opposite of `#[doc(auto_cfg(hide(...)))]`: if you used `#[doc(auto_cfg(hide(...)))]` and want to revert its effect on an item and its descendants, you can use `#[doc(auto_cfg(show(...)))]`. +It only applies to `#[doc(auto_cfg = true)]`, not to `#[doc(cfg(...))]`. + +For example: + +```rust,ignore (nightly) +#[doc(auto_cfg(hide(unix)))] +#[cfg(any(unix, feature = "futures-io"))] +pub mod futures { + // `futures` and all its descendants won't display "unix" in their cfgs. + #[doc(auto_cfg(show(unix)))] + pub mod child { + // `child` and all its descendants will display "unix" in their cfgs. + } +} +``` + +The attribute accepts only a list of identifiers or key/value items. So you can write: + +```rust,ignore (nightly) +#[doc(auto_cfg(show(unix, doctest, feature = "something")))] +#[doc(auto_cfg(show()))] +``` + +But you cannot write: + +```rust,ignore (nightly) +#[doc(auto_cfg(show(not(unix))))] +``` + +If `auto_cfg(show(...))` and `auto_cfg(hide(...))` are used to show/hide a same `cfg` on a same item, it'll emit an error. Example: + +```rust,ignore (nightly) +#[doc(auto_cfg(show(unix)))] +#[doc(auto_cfg(hide(unix)))] // Error! +pub fn foo() {} +``` + +Using this attribute will re-enable `auto_cfg` if it was disabled at this location: + +```rust,ignore (nightly) +#[doc(auto_cfg = false)] // Disabling `auto_cfg` +#[doc(auto_cfg(show(unix)))] // `auto_cfg` is re-enabled. +pub fn foo() {} +``` + +### `#[doc(auto_cfg)`/`#[doc(auto_cfg = true)]`/`#[doc(auto_cfg = false)]` + +By default, `#[doc(auto_cfg)]` is enabled at the crate-level. When it's enabled, Rustdoc will automatically display `cfg(...)` compatibility information as-if the same `#[doc(cfg(...))]` had been specified. + +This attribute impacts the item on which it is used and its descendants. + +So if we take back the previous example: + +```rust +#[cfg(feature = "futures-io")] +pub mod futures {} +``` + +There's no need to "duplicate" the `cfg` into a `doc(cfg())` to make Rustdoc display it. + +In some situations, the detailed conditional compilation rules used to implement the feature might not serve as good documentation (for example, the list of supported platforms might be very long, and it might be better to document them in one place). To turn it off, add the `#[doc(auto_cfg = false)]` attribute on the item. + +If no argument is specified (ie `#[doc(auto_cfg)]`), it's the same as writing `#[doc(auto_cfg = true)]`. + +## Inheritance + +Rustdoc merges `cfg` attributes from parent modules to its children. For example, in this case, the module `non_unix` will describe the entire compatibility matrix for the module, and not just its directly attached information: + +```rust,ignore (nightly) +#[doc(cfg(any(windows, unix)))] +pub mod desktop { + #[doc(cfg(not(unix)))] + pub mod non_unix { + // ... + } +} +``` + +This code will display: ```text -[ - "hello 'a'\" ok", - "how", - "are", - "you today?", -] +Available on (Windows or Unix) and non-Unix only. ``` -## `--generate-macro-expansion`: Generate macros expansion toggles in source code +### Re-exports and inlining -This flag enables the generation of toggles to expand macros in the HTML source code pages. +`cfg` attributes of a re-export are never merged with the re-exported item(s) attributes except if the re-export has the `#[doc(inline)]` attribute. In this case, the `cfg` of the re-exported item will be merged with the re-export's. + +When talking about "attributes merge", we mean that if the re-export has `#[cfg(unix)]` and the re-exported item has `#[cfg(feature = "foo")]`, you will only see `cfg(unix)` on the re-export and only `cfg(feature = "foo")` on the re-exported item, unless the re-export has `#[doc(inline)]`, then you will only see the re-exported item with both `cfg(unix)` and `cfg(feature = "foo")`. + +Example: + +```rust,ignore (nightly) +#[doc(cfg(any(windows, unix)))] +pub mod desktop { + #[doc(cfg(not(unix)))] + pub mod non_unix { + // code + } +} + +#[doc(cfg(target_os = "freebsd"))] +pub use desktop::non_unix as non_unix_desktop; +#[doc(cfg(target_os = "macos"))] +#[doc(inline)] +pub use desktop::non_unix as inlined_non_unix_desktop; +``` + +In this example, `non_unix_desktop` will only display `cfg(target_os = "freeebsd")` and not display any `cfg` from `desktop::non_unix`. + +On the contrary, `inlined_non_unix_desktop` will have cfgs from both the re-export and the re-exported item. + +So that also means that if a crate re-exports a foreign item, unless it has `#[doc(inline)]`, the `cfg` and `doc(cfg)` attributes will not be visible: + +```rust,ignore (nightly) +// dep: +#[cfg(feature = "a")] +pub struct S; + +// crate using dep: + +// There will be no mention of `feature = "a"` in the documentation. +pub use dep::S as Y; +``` diff --git a/src/doc/rustdoc/src/write-documentation/linking-to-items-by-name.md b/src/doc/rustdoc/src/write-documentation/linking-to-items-by-name.md index 5e785483402..b1495b2575e 100644 --- a/src/doc/rustdoc/src/write-documentation/linking-to-items-by-name.md +++ b/src/doc/rustdoc/src/write-documentation/linking-to-items-by-name.md @@ -90,7 +90,7 @@ fn Foo() {} These prefixes will be stripped when displayed in the documentation, so `[struct@Foo]` will be rendered as `Foo`. The following prefixes are available: `struct`, `enum`, `trait`, `union`, `mod`, `module`, `const`, `constant`, `fn`, `function`, `field`, `variant`, `method`, `derive`, -`type`, `value`, `macro`, `prim` or `primitive`. +`type`, `value`, `macro`, `tyalias`, `typealias`, `prim` or `primitive`. You can also disambiguate for functions by adding `()` after the function name, or for macros by adding `!` after the macro name. The macro `!` can be followed by `()`, `{}`, diff --git a/src/doc/unstable-book/src/compiler-flags/branch-protection.md b/src/doc/unstable-book/src/compiler-flags/branch-protection.md index f0cc44a07f3..c15567dcac2 100644 --- a/src/doc/unstable-book/src/compiler-flags/branch-protection.md +++ b/src/doc/unstable-book/src/compiler-flags/branch-protection.md @@ -13,6 +13,7 @@ It takes some combination of the following values, separated by a `,`. - `leaf` - Enable pointer authentication for all functions, including leaf functions. - `b-key` - Sign return addresses with key B, instead of the default key A. - `bti` - Enable branch target identification. +- `gcs` - Enable guarded control stack support. `leaf`, `b-key` and `pc` are only valid if `pac-ret` was previously specified. For example, `-Z branch-protection=bti,pac-ret,leaf` is valid, but diff --git a/src/doc/unstable-book/src/compiler-flags/split-dwarf-out-dir.md b/src/doc/unstable-book/src/compiler-flags/split-dwarf-out-dir.md new file mode 100644 index 00000000000..a2070730b42 --- /dev/null +++ b/src/doc/unstable-book/src/compiler-flags/split-dwarf-out-dir.md @@ -0,0 +1,7 @@ +# `split-dwarf-out-dir` + +On systems which use DWARF debug info this flag causes `.dwo` files produced +by `-C split-debuginfo` to be written to the specified directory rather than +placed next to the object files. This is mostly useful if you have a build +system which needs to control where to find compile outputs without running the +compiler and have to put your `.dwo` files in a separate directory. diff --git a/src/etc/pre-push.sh b/src/etc/pre-push.sh index 7bacc943f25..33ed2f0e406 100755 --- a/src/etc/pre-push.sh +++ b/src/etc/pre-push.sh @@ -26,7 +26,10 @@ ROOT_DIR="$(git rev-parse --show-toplevel)" echo "Running pre-push script $ROOT_DIR/x test tidy" cd "$ROOT_DIR" -./x test tidy --set build.locked-deps=true +# The env var is necessary for printing diffs in py (fmt/lint) and cpp. +TIDY_PRINT_DIFF=1 ./x test tidy \ + --set build.locked-deps=true \ + --extra-checks auto:py,auto:cpp,auto:js if [ $? -ne 0 ]; then echo "You may use \`git push --no-verify\` to skip this check." exit 1 diff --git a/src/librustdoc/Cargo.toml b/src/librustdoc/Cargo.toml index f37a8d85361..f9c2465fb3c 100644 --- a/src/librustdoc/Cargo.toml +++ b/src/librustdoc/Cargo.toml @@ -12,7 +12,7 @@ path = "lib.rs" arrayvec = { version = "0.7", default-features = false } askama = { version = "0.14", default-features = false, features = ["alloc", "config", "derive"] } base64 = "0.21.7" -indexmap = "2" +indexmap = { version = "2", features = ["serde"] } itertools = "0.12" minifier = { version = "0.3.5", default-features = false } pulldown-cmark-escape = { version = "0.11.0", features = ["simd"] } @@ -21,7 +21,7 @@ rustdoc-json-types = { path = "../rustdoc-json-types" } serde = { version = "1.0", features = ["derive"] } serde_json = "1.0" smallvec = "1.8.1" -stringdex = { version = "0.0.1-alpha9" } +stringdex = { version = "0.0.1-alpha10" } tempfile = "3" threadpool = "1.8.1" tracing = "0.1" diff --git a/src/librustdoc/clean/cfg.rs b/src/librustdoc/clean/cfg.rs index 8feca1367fc..aa614b73dea 100644 --- a/src/librustdoc/clean/cfg.rs +++ b/src/librustdoc/clean/cfg.rs @@ -256,6 +256,36 @@ impl Cfg { fn omit_preposition(&self) -> bool { matches!(self, Cfg::True | Cfg::False) } + + pub(crate) fn strip_hidden(&self, hidden: &FxHashSet<Cfg>) -> Option<Self> { + match self { + Self::True | Self::False => Some(self.clone()), + Self::Cfg(..) => { + if !hidden.contains(self) { + Some(self.clone()) + } else { + None + } + } + Self::Not(cfg) => { + if let Some(cfg) = cfg.strip_hidden(hidden) { + Some(Self::Not(Box::new(cfg))) + } else { + None + } + } + Self::Any(cfgs) => { + let cfgs = + cfgs.iter().filter_map(|cfg| cfg.strip_hidden(hidden)).collect::<Vec<_>>(); + if cfgs.is_empty() { None } else { Some(Self::Any(cfgs)) } + } + Self::All(cfgs) => { + let cfgs = + cfgs.iter().filter_map(|cfg| cfg.strip_hidden(hidden)).collect::<Vec<_>>(); + if cfgs.is_empty() { None } else { Some(Self::All(cfgs)) } + } + } + } } impl ops::Not for Cfg { diff --git a/src/librustdoc/clean/inline.rs b/src/librustdoc/clean/inline.rs index 8461e15c6c3..8beea0580de 100644 --- a/src/librustdoc/clean/inline.rs +++ b/src/librustdoc/clean/inline.rs @@ -19,10 +19,10 @@ use tracing::{debug, trace}; use super::{Item, extract_cfg_from_attrs}; use crate::clean::{ - self, Attributes, ImplKind, ItemId, Type, clean_bound_vars, clean_generics, clean_impl_item, - clean_middle_assoc_item, clean_middle_field, clean_middle_ty, clean_poly_fn_sig, - clean_trait_ref_with_constraints, clean_ty, clean_ty_alias_inner_type, clean_ty_generics, - clean_variant_def, utils, + self, Attributes, CfgInfo, ImplKind, ItemId, Type, clean_bound_vars, clean_generics, + clean_impl_item, clean_middle_assoc_item, clean_middle_field, clean_middle_ty, + clean_poly_fn_sig, clean_trait_ref_with_constraints, clean_ty, clean_ty_alias_inner_type, + clean_ty_generics, clean_variant_def, utils, }; use crate::core::DocContext; use crate::formats::item_type::ItemType; @@ -409,6 +409,7 @@ pub(crate) fn merge_attrs( cx: &mut DocContext<'_>, old_attrs: &[hir::Attribute], new_attrs: Option<(&[hir::Attribute], Option<LocalDefId>)>, + cfg_info: &mut CfgInfo, ) -> (clean::Attributes, Option<Arc<clean::cfg::Cfg>>) { // NOTE: If we have additional attributes (from a re-export), // always insert them first. This ensure that re-export @@ -423,12 +424,12 @@ pub(crate) fn merge_attrs( } else { Attributes::from_hir(&both) }, - extract_cfg_from_attrs(both.iter(), cx.tcx, &cx.cache.hidden_cfg), + extract_cfg_from_attrs(both.iter(), cx.tcx, cfg_info), ) } else { ( Attributes::from_hir(old_attrs), - extract_cfg_from_attrs(old_attrs.iter(), cx.tcx, &cx.cache.hidden_cfg), + extract_cfg_from_attrs(old_attrs.iter(), cx.tcx, cfg_info), ) } } @@ -604,7 +605,11 @@ pub(crate) fn build_impl( }); } - let (merged_attrs, cfg) = merge_attrs(cx, load_attrs(cx, did), attrs); + // In here, we pass an empty `CfgInfo` because the computation of `cfg` happens later, so it + // doesn't matter at this point. + // + // We need to pass this empty `CfgInfo` because `merge_attrs` is used when computing the `cfg`. + let (merged_attrs, cfg) = merge_attrs(cx, load_attrs(cx, did), attrs, &mut CfgInfo::default()); trace!("merged_attrs={merged_attrs:?}"); trace!( diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs index 0afb969d5c8..c6339dd4755 100644 --- a/src/librustdoc/clean/mod.rs +++ b/src/librustdoc/clean/mod.rs @@ -212,18 +212,10 @@ fn generate_item_with_correct_attrs( // We only keep the item's attributes. target_attrs.iter().map(|attr| (Cow::Borrowed(attr), None)).collect() }; - let cfg = extract_cfg_from_attrs( - attrs.iter().map(move |(attr, _)| match attr { - Cow::Borrowed(attr) => *attr, - Cow::Owned(attr) => attr, - }), - cx.tcx, - &cx.cache.hidden_cfg, - ); let attrs = Attributes::from_hir_iter(attrs.iter().map(|(attr, did)| (&**attr, *did)), false); let name = renamed.or(Some(name)); - let mut item = Item::from_def_id_and_attrs_and_parts(def_id, name, kind, attrs, cfg); + let mut item = Item::from_def_id_and_attrs_and_parts(def_id, name, kind, attrs, None); // FIXME (GuillaumeGomez): Should we also make `inline_stmt_id` a `Vec` instead of an `Option`? item.inner.inline_stmt_id = import_ids.first().copied(); item diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs index bd3f4e9a6f2..6e3dfa0ac22 100644 --- a/src/librustdoc/clean/types.rs +++ b/src/librustdoc/clean/types.rs @@ -6,7 +6,8 @@ use std::{fmt, iter}; use arrayvec::ArrayVec; use itertools::Either; use rustc_abi::{ExternAbi, VariantIdx}; -use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet}; +use rustc_ast::ast::{LitKind, MetaItemInner, MetaItemKind}; +use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexMap, FxIndexSet}; use rustc_hir::attrs::{AttributeKind, DeprecatedSince, Deprecation}; use rustc_hir::def::{CtorKind, DefKind, Res}; use rustc_hir::def_id::{CrateNum, DefId, LOCAL_CRATE, LocalDefId}; @@ -467,7 +468,7 @@ impl Item { name, kind, Attributes::from_hir(hir_attrs), - extract_cfg_from_attrs(hir_attrs.iter(), cx.tcx, &cx.cache.hidden_cfg), + None, ) } @@ -794,50 +795,6 @@ impl Item { Some(tcx.visibility(def_id)) } - /// Get a list of attributes excluding `#[repr]` to display. - /// - /// Only used by the HTML output-format. - fn attributes_without_repr(&self) -> Vec<String> { - self.attrs - .other_attrs - .iter() - .filter_map(|attr| match attr { - hir::Attribute::Parsed(AttributeKind::LinkSection { name, .. }) => { - Some(format!("#[unsafe(link_section = \"{name}\")]")) - } - hir::Attribute::Parsed(AttributeKind::NoMangle(..)) => { - Some("#[unsafe(no_mangle)]".to_string()) - } - hir::Attribute::Parsed(AttributeKind::ExportName { name, .. }) => { - Some(format!("#[unsafe(export_name = \"{name}\")]")) - } - hir::Attribute::Parsed(AttributeKind::NonExhaustive(..)) => { - Some("#[non_exhaustive]".to_string()) - } - _ => None, - }) - .collect() - } - - /// Get a list of attributes to display on this item. - /// - /// Only used by the HTML output-format. - pub(crate) fn attributes(&self, tcx: TyCtxt<'_>, cache: &Cache) -> Vec<String> { - let mut attrs = self.attributes_without_repr(); - - if let Some(repr_attr) = self.repr(tcx, cache) { - attrs.push(repr_attr); - } - attrs - } - - /// Returns a stringified `#[repr(...)]` attribute. - /// - /// Only used by the HTML output-format. - pub(crate) fn repr(&self, tcx: TyCtxt<'_>, cache: &Cache) -> Option<String> { - repr_attributes(tcx, cache, self.def_id()?, self.type_()) - } - pub fn is_doc_hidden(&self) -> bool { self.attrs.is_doc_hidden() } @@ -847,74 +804,6 @@ impl Item { } } -/// Return a string representing the `#[repr]` attribute if present. -/// -/// Only used by the HTML output-format. -pub(crate) fn repr_attributes( - tcx: TyCtxt<'_>, - cache: &Cache, - def_id: DefId, - item_type: ItemType, -) -> Option<String> { - use rustc_abi::IntegerType; - - if !matches!(item_type, ItemType::Struct | ItemType::Enum | ItemType::Union) { - return None; - } - let adt = tcx.adt_def(def_id); - let repr = adt.repr(); - let mut out = Vec::new(); - if repr.c() { - out.push("C"); - } - if repr.transparent() { - // Render `repr(transparent)` iff the non-1-ZST field is public or at least one - // field is public in case all fields are 1-ZST fields. - let render_transparent = cache.document_private - || adt - .all_fields() - .find(|field| { - let ty = field.ty(tcx, ty::GenericArgs::identity_for_item(tcx, field.did)); - tcx.layout_of(ty::TypingEnv::post_analysis(tcx, field.did).as_query_input(ty)) - .is_ok_and(|layout| !layout.is_1zst()) - }) - .map_or_else( - || adt.all_fields().any(|field| field.vis.is_public()), - |field| field.vis.is_public(), - ); - - if render_transparent { - out.push("transparent"); - } - } - if repr.simd() { - out.push("simd"); - } - let pack_s; - if let Some(pack) = repr.pack { - pack_s = format!("packed({})", pack.bytes()); - out.push(&pack_s); - } - let align_s; - if let Some(align) = repr.align { - align_s = format!("align({})", align.bytes()); - out.push(&align_s); - } - let int_s; - if let Some(int) = repr.int { - int_s = match int { - IntegerType::Pointer(is_signed) => { - format!("{}size", if is_signed { 'i' } else { 'u' }) - } - IntegerType::Fixed(size, is_signed) => { - format!("{}{}", if is_signed { 'i' } else { 'u' }, size.size().bytes() * 8) - } - }; - out.push(&int_s); - } - if !out.is_empty() { Some(format!("#[repr({})]", out.join(", "))) } else { None } -} - #[derive(Clone, Debug)] pub(crate) enum ItemKind { ExternCrateItem { @@ -1014,30 +903,6 @@ impl ItemKind { | AttributeItem => [].iter(), } } - - /// Returns `true` if this item does not appear inside an impl block. - pub(crate) fn is_non_assoc(&self) -> bool { - matches!( - self, - StructItem(_) - | UnionItem(_) - | EnumItem(_) - | TraitItem(_) - | ModuleItem(_) - | ExternCrateItem { .. } - | FunctionItem(_) - | TypeAliasItem(_) - | StaticItem(_) - | ConstantItem(_) - | TraitAliasItem(_) - | ForeignFunctionItem(_, _) - | ForeignStaticItem(_, _) - | ForeignTypeItem - | MacroItem(_) - | ProcMacroItem(_) - | PrimitiveItem(_) - ) - } } #[derive(Clone, Debug)] @@ -1057,14 +922,99 @@ pub(crate) fn hir_attr_lists<'a, I: IntoIterator<Item = &'a hir::Attribute>>( .flatten() } +/// This type keeps track of (doc) cfg information as we go down the item tree. +#[derive(Clone, Debug)] +pub(crate) struct CfgInfo { + /// List of currently active `doc(auto_cfg(hide(...)))` cfgs, minus currently active + /// `doc(auto_cfg(show(...)))` cfgs. + hidden_cfg: FxHashSet<Cfg>, + /// Current computed `cfg`. Each time we enter a new item, this field is updated as well while + /// taking into account the `hidden_cfg` information. + current_cfg: Cfg, + /// Whether the `doc(auto_cfg())` feature is enabled or not at this point. + auto_cfg_active: bool, + /// If the parent item used `doc(cfg(...))`, then we don't want to overwrite `current_cfg`, + /// instead we will concatenate with it. However, if it's not the case, we need to overwrite + /// `current_cfg`. + parent_is_doc_cfg: bool, +} + +impl Default for CfgInfo { + fn default() -> Self { + Self { + hidden_cfg: FxHashSet::from_iter([ + Cfg::Cfg(sym::test, None), + Cfg::Cfg(sym::doc, None), + Cfg::Cfg(sym::doctest, None), + ]), + current_cfg: Cfg::True, + auto_cfg_active: true, + parent_is_doc_cfg: false, + } + } +} + +fn show_hide_show_conflict_error( + tcx: TyCtxt<'_>, + item_span: rustc_span::Span, + previous: rustc_span::Span, +) { + let mut diag = tcx.sess.dcx().struct_span_err( + item_span, + format!( + "same `cfg` was in `auto_cfg(hide(...))` and `auto_cfg(show(...))` on the same item" + ), + ); + diag.span_note(previous, "first change was here"); + diag.emit(); +} + +/// This functions updates the `hidden_cfg` field of the provided `cfg_info` argument. +/// +/// It also checks if a same `cfg` is present in both `auto_cfg(hide(...))` and +/// `auto_cfg(show(...))` on the same item and emits an error if it's the case. +/// +/// Because we go through a list of `cfg`s, we keep track of the `cfg`s we saw in `new_show_attrs` +/// and in `new_hide_attrs` arguments. +fn handle_auto_cfg_hide_show( + tcx: TyCtxt<'_>, + cfg_info: &mut CfgInfo, + sub_attr: &MetaItemInner, + is_show: bool, + new_show_attrs: &mut FxHashMap<(Symbol, Option<Symbol>), rustc_span::Span>, + new_hide_attrs: &mut FxHashMap<(Symbol, Option<Symbol>), rustc_span::Span>, +) { + if let MetaItemInner::MetaItem(item) = sub_attr + && let MetaItemKind::List(items) = &item.kind + { + for item in items { + // FIXME: Report in case `Cfg::parse` reports an error? + if let Ok(Cfg::Cfg(key, value)) = Cfg::parse(item) { + if is_show { + if let Some(span) = new_hide_attrs.get(&(key, value)) { + show_hide_show_conflict_error(tcx, item.span(), *span); + } else { + new_show_attrs.insert((key, value), item.span()); + } + cfg_info.hidden_cfg.remove(&Cfg::Cfg(key, value)); + } else { + if let Some(span) = new_show_attrs.get(&(key, value)) { + show_hide_show_conflict_error(tcx, item.span(), *span); + } else { + new_hide_attrs.insert((key, value), item.span()); + } + cfg_info.hidden_cfg.insert(Cfg::Cfg(key, value)); + } + } + } + } +} + pub(crate) fn extract_cfg_from_attrs<'a, I: Iterator<Item = &'a hir::Attribute> + Clone>( attrs: I, tcx: TyCtxt<'_>, - hidden_cfg: &FxHashSet<Cfg>, + cfg_info: &mut CfgInfo, ) -> Option<Arc<Cfg>> { - let doc_cfg_active = tcx.features().doc_cfg(); - let doc_auto_cfg_active = tcx.features().doc_auto_cfg(); - fn single<T: IntoIterator>(it: T) -> Option<T::Item> { let mut iter = it.into_iter(); let item = iter.next()?; @@ -1074,56 +1024,163 @@ pub(crate) fn extract_cfg_from_attrs<'a, I: Iterator<Item = &'a hir::Attribute> Some(item) } - let mut cfg = if doc_cfg_active || doc_auto_cfg_active { - let mut doc_cfg = attrs - .clone() - .filter(|attr| attr.has_name(sym::doc)) - .flat_map(|attr| attr.meta_item_list().unwrap_or_default()) - .filter(|attr| attr.has_name(sym::cfg)) - .peekable(); - if doc_cfg.peek().is_some() && doc_cfg_active { - let sess = tcx.sess; - - doc_cfg.fold(Cfg::True, |mut cfg, item| { - if let Some(cfg_mi) = - item.meta_item().and_then(|item| rustc_expand::config::parse_cfg(item, sess)) - { - match Cfg::parse(cfg_mi) { - Ok(new_cfg) => cfg &= new_cfg, - Err(e) => { - sess.dcx().span_err(e.span, e.msg); - } + fn check_changed_auto_active_status( + changed_auto_active_status: &mut Option<rustc_span::Span>, + attr: &ast::MetaItem, + cfg_info: &mut CfgInfo, + tcx: TyCtxt<'_>, + new_value: bool, + ) -> bool { + if let Some(first_change) = changed_auto_active_status { + if cfg_info.auto_cfg_active != new_value { + tcx.sess + .dcx() + .struct_span_err( + vec![*first_change, attr.span], + "`auto_cfg` was disabled and enabled more than once on the same item", + ) + .emit(); + return true; + } + } else { + *changed_auto_active_status = Some(attr.span); + } + cfg_info.auto_cfg_active = new_value; + false + } + + let mut new_show_attrs = FxHashMap::default(); + let mut new_hide_attrs = FxHashMap::default(); + + let mut doc_cfg = attrs + .clone() + .filter(|attr| attr.has_name(sym::doc)) + .flat_map(|attr| attr.meta_item_list().unwrap_or_default()) + .filter(|attr| attr.has_name(sym::cfg)) + .peekable(); + // If the item uses `doc(cfg(...))`, then we ignore the other `cfg(...)` attributes. + if doc_cfg.peek().is_some() { + let sess = tcx.sess; + // We overwrite existing `cfg`. + if !cfg_info.parent_is_doc_cfg { + cfg_info.current_cfg = Cfg::True; + cfg_info.parent_is_doc_cfg = true; + } + for attr in doc_cfg { + if let Some(cfg_mi) = + attr.meta_item().and_then(|attr| rustc_expand::config::parse_cfg(attr, sess)) + { + match Cfg::parse(cfg_mi) { + Ok(new_cfg) => cfg_info.current_cfg &= new_cfg, + Err(e) => { + sess.dcx().span_err(e.span, e.msg); } } - cfg - }) - } else if doc_auto_cfg_active { - // If there is no `doc(cfg())`, then we retrieve the `cfg()` attributes (because - // `doc(cfg())` overrides `cfg()`). - attrs - .clone() - .filter(|attr| attr.has_name(sym::cfg_trace)) - .filter_map(|attr| single(attr.meta_item_list()?)) - .filter_map(|attr| Cfg::parse_without(attr.meta_item()?, hidden_cfg).ok().flatten()) - .fold(Cfg::True, |cfg, new_cfg| cfg & new_cfg) - } else { - Cfg::True + } } } else { - Cfg::True - }; + cfg_info.parent_is_doc_cfg = false; + } - // treat #[target_feature(enable = "feat")] attributes as if they were - // #[doc(cfg(target_feature = "feat"))] attributes as well - if let Some(features) = - find_attr!(attrs, AttributeKind::TargetFeature { features, .. } => features) - { - for (feature, _) in features { - cfg &= Cfg::Cfg(sym::target_feature, Some(*feature)); + let mut changed_auto_active_status = None; + + // We get all `doc(auto_cfg)`, `cfg` and `target_feature` attributes. + for attr in attrs { + if let Some(ident) = attr.ident() + && ident.name == sym::doc + && let Some(attrs) = attr.meta_item_list() + { + for attr in attrs.iter().filter(|attr| attr.has_name(sym::auto_cfg)) { + let MetaItemInner::MetaItem(attr) = attr else { + continue; + }; + match &attr.kind { + MetaItemKind::Word => { + if check_changed_auto_active_status( + &mut changed_auto_active_status, + attr, + cfg_info, + tcx, + true, + ) { + return None; + } + } + MetaItemKind::NameValue(lit) => { + if let LitKind::Bool(value) = lit.kind { + if check_changed_auto_active_status( + &mut changed_auto_active_status, + attr, + cfg_info, + tcx, + value, + ) { + return None; + } + } + } + MetaItemKind::List(sub_attrs) => { + if check_changed_auto_active_status( + &mut changed_auto_active_status, + attr, + cfg_info, + tcx, + true, + ) { + return None; + } + for sub_attr in sub_attrs.iter() { + if let Some(ident) = sub_attr.ident() + && (ident.name == sym::show || ident.name == sym::hide) + { + handle_auto_cfg_hide_show( + tcx, + cfg_info, + &sub_attr, + ident.name == sym::show, + &mut new_show_attrs, + &mut new_hide_attrs, + ); + } + } + } + } + } + } else if let hir::Attribute::Parsed(AttributeKind::TargetFeature { features, .. }) = attr { + // Treat `#[target_feature(enable = "feat")]` attributes as if they were + // `#[doc(cfg(target_feature = "feat"))]` attributes as well. + for (feature, _) in features { + cfg_info.current_cfg &= Cfg::Cfg(sym::target_feature, Some(*feature)); + } + continue; + } else if !cfg_info.parent_is_doc_cfg + && let Some(ident) = attr.ident() + && matches!(ident.name, sym::cfg | sym::cfg_trace) + && let Some(attr) = single(attr.meta_item_list()?) + && let Ok(new_cfg) = Cfg::parse(&attr) + { + cfg_info.current_cfg &= new_cfg; } } - if cfg == Cfg::True { None } else { Some(Arc::new(cfg)) } + // If `doc(auto_cfg)` feature is disabled and `doc(cfg())` wasn't used, there is nothing + // to be done here. + if !cfg_info.auto_cfg_active && !cfg_info.parent_is_doc_cfg { + None + } else if cfg_info.parent_is_doc_cfg { + if cfg_info.current_cfg == Cfg::True { + None + } else { + Some(Arc::new(cfg_info.current_cfg.clone())) + } + } else { + // If `doc(auto_cfg)` feature is enabled, we want to collect all `cfg` items, we remove the + // hidden ones afterward. + match cfg_info.current_cfg.strip_hidden(&cfg_info.hidden_cfg) { + None | Some(Cfg::True) => None, + Some(cfg) => Some(Arc::new(cfg)), + } + } } pub(crate) trait NestedAttributesExt { @@ -1622,7 +1679,7 @@ impl Type { match (self_cleared, other_cleared) { // Recursive cases. (Type::Tuple(a), Type::Tuple(b)) => { - a.len() == b.len() && a.iter().zip(b).all(|(a, b)| a.is_doc_subtype_of(b, cache)) + a.iter().eq_by(b, |a, b| a.is_doc_subtype_of(b, cache)) } (Type::Slice(a), Type::Slice(b)) => a.is_doc_subtype_of(b, cache), (Type::Array(a, al), Type::Array(b, bl)) => al == bl && a.is_doc_subtype_of(b, cache), diff --git a/src/librustdoc/doctest.rs b/src/librustdoc/doctest.rs index 95bd31729de..9499258f983 100644 --- a/src/librustdoc/doctest.rs +++ b/src/librustdoc/doctest.rs @@ -404,11 +404,15 @@ pub(crate) fn run_tests( std::mem::drop(temp_dir.take()); times.display_times(); }); + } else { + // If the first condition branch exited successfully, `test_main_with_exit_callback` will + // not exit the process. So to prevent displaying the times twice, we put it behind an + // `else` condition. + times.display_times(); } + // We ensure temp dir destructor is called. + std::mem::drop(temp_dir); if nb_errors != 0 { - // We ensure temp dir destructor is called. - std::mem::drop(temp_dir); - times.display_times(); std::process::exit(test::ERROR_EXIT_CODE); } } diff --git a/src/librustdoc/doctest/rust.rs b/src/librustdoc/doctest/rust.rs index f5ec828187a..4d3f976c2a6 100644 --- a/src/librustdoc/doctest/rust.rs +++ b/src/librustdoc/doctest/rust.rs @@ -5,7 +5,6 @@ use std::env; use std::sync::Arc; use rustc_ast_pretty::pprust; -use rustc_data_structures::fx::FxHashSet; use rustc_hir::def_id::{CRATE_DEF_ID, LocalDefId}; use rustc_hir::{self as hir, CRATE_HIR_ID, intravisit}; use rustc_middle::hir::nested_filter; @@ -15,7 +14,7 @@ use rustc_span::source_map::SourceMap; use rustc_span::{BytePos, DUMMY_SP, FileName, Pos, Span, sym}; use super::{DocTestVisitor, ScrapedDocTest}; -use crate::clean::{Attributes, extract_cfg_from_attrs}; +use crate::clean::{Attributes, CfgInfo, extract_cfg_from_attrs}; use crate::html::markdown::{self, ErrorCodes, LangString, MdRelLine}; struct RustCollector { @@ -121,7 +120,7 @@ impl HirCollector<'_> { ) { let ast_attrs = self.tcx.hir_attrs(self.tcx.local_def_id_to_hir_id(def_id)); if let Some(ref cfg) = - extract_cfg_from_attrs(ast_attrs.iter(), self.tcx, &FxHashSet::default()) + extract_cfg_from_attrs(ast_attrs.iter(), self.tcx, &mut CfgInfo::default()) && !cfg.matches(&self.tcx.sess.psess) { return; diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs index 29b4c4caaf8..a19d254ea95 100644 --- a/src/librustdoc/formats/cache.rs +++ b/src/librustdoc/formats/cache.rs @@ -125,8 +125,6 @@ pub(crate) struct Cache { /// /// Links are indexed by the DefId of the item they document. pub(crate) intra_doc_links: FxHashMap<ItemId, FxIndexSet<clean::ItemLink>>, - /// Cfg that have been hidden via #![doc(cfg_hide(...))] - pub(crate) hidden_cfg: FxHashSet<clean::cfg::Cfg>, /// Contains the list of `DefId`s which have been inlined. It is used when generating files /// to check if a stripped item should get its file generated or not: if it's inside a diff --git a/src/librustdoc/html/format.rs b/src/librustdoc/html/format.rs index ecaff4cdf43..856e637a458 100644 --- a/src/librustdoc/html/format.rs +++ b/src/librustdoc/html/format.rs @@ -37,10 +37,6 @@ use crate::html::escape::{Escape, EscapeBodyText}; use crate::html::render::Context; use crate::passes::collect_intra_doc_links::UrlFragment; -pub(crate) fn write_str(s: &mut String, f: fmt::Arguments<'_>) { - s.write_fmt(f).unwrap(); -} - pub(crate) fn print_generic_bounds( bounds: &[clean::GenericBound], cx: &Context<'_>, diff --git a/src/librustdoc/html/highlight.rs b/src/librustdoc/html/highlight.rs index 0e06361024b..fad15573cde 100644 --- a/src/librustdoc/html/highlight.rs +++ b/src/librustdoc/html/highlight.rs @@ -8,6 +8,7 @@ use std::borrow::Cow; use std::collections::VecDeque; use std::fmt::{self, Display, Write}; +use std::iter; use rustc_data_structures::fx::FxIndexMap; use rustc_lexer::{Cursor, FrontmatterAllowed, LiteralKind, TokenKind}; @@ -15,8 +16,9 @@ use rustc_span::edition::Edition; use rustc_span::symbol::Symbol; use rustc_span::{BytePos, DUMMY_SP, Span}; -use super::format::{self, write_str}; +use super::format; use crate::clean::PrimitiveType; +use crate::display::Joined as _; use crate::html::escape::EscapeBodyText; use crate::html::macro_expansion::ExpandedCode; use crate::html::render::{Context, LinkFromSrc}; @@ -45,92 +47,72 @@ pub(crate) enum Tooltip { CompileFail, ShouldPanic, Edition(Edition), - None, } /// Highlights `src` as an inline example, returning the HTML output. pub(crate) fn render_example_with_highlighting( src: &str, - out: &mut String, - tooltip: Tooltip, + tooltip: Option<&Tooltip>, playground_button: Option<&str>, extra_classes: &[String], -) { - write_header(out, "rust-example-rendered", None, tooltip, extra_classes); - write_code(out, src, None, None, None); - write_footer(out, playground_button); +) -> impl Display { + fmt::from_fn(move |f| { + write_header("rust-example-rendered", tooltip, extra_classes).fmt(f)?; + write_code(f, src, None, None, None); + write_footer(playground_button).fmt(f) + }) } -fn write_header( - out: &mut String, - class: &str, - extra_content: Option<&str>, - tooltip: Tooltip, - extra_classes: &[String], -) { - write_str( - out, - format_args!( +fn write_header(class: &str, tooltip: Option<&Tooltip>, extra_classes: &[String]) -> impl Display { + fmt::from_fn(move |f| { + write!( + f, "<div class=\"example-wrap{}\">", - match tooltip { - Tooltip::IgnoreAll | Tooltip::IgnoreSome(_) => " ignore", - Tooltip::CompileFail => " compile_fail", - Tooltip::ShouldPanic => " should_panic", - Tooltip::Edition(_) => " edition", - Tooltip::None => "", - } - ), - ); - - if tooltip != Tooltip::None { - let tooltip = fmt::from_fn(|f| match &tooltip { - Tooltip::IgnoreAll => f.write_str("This example is not tested"), - Tooltip::IgnoreSome(platforms) => { - f.write_str("This example is not tested on ")?; - match &platforms[..] { - [] => unreachable!(), - [platform] => f.write_str(platform)?, - [first, second] => write!(f, "{first} or {second}")?, - [platforms @ .., last] => { - for platform in platforms { - write!(f, "{platform}, ")?; + tooltip + .map(|tooltip| match tooltip { + Tooltip::IgnoreAll | Tooltip::IgnoreSome(_) => " ignore", + Tooltip::CompileFail => " compile_fail", + Tooltip::ShouldPanic => " should_panic", + Tooltip::Edition(_) => " edition", + }) + .unwrap_or_default() + )?; + + if let Some(tooltip) = tooltip { + let tooltip = fmt::from_fn(|f| match tooltip { + Tooltip::IgnoreAll => f.write_str("This example is not tested"), + Tooltip::IgnoreSome(platforms) => { + f.write_str("This example is not tested on ")?; + match &platforms[..] { + [] => unreachable!(), + [platform] => f.write_str(platform)?, + [first, second] => write!(f, "{first} or {second}")?, + [platforms @ .., last] => { + for platform in platforms { + write!(f, "{platform}, ")?; + } + write!(f, "or {last}")?; } - write!(f, "or {last}")?; } + Ok(()) } - Ok(()) - } - Tooltip::CompileFail => f.write_str("This example deliberately fails to compile"), - Tooltip::ShouldPanic => f.write_str("This example panics"), - Tooltip::Edition(edition) => write!(f, "This example runs with edition {edition}"), - Tooltip::None => unreachable!(), + Tooltip::CompileFail => f.write_str("This example deliberately fails to compile"), + Tooltip::ShouldPanic => f.write_str("This example panics"), + Tooltip::Edition(edition) => write!(f, "This example runs with edition {edition}"), + }); + + write!(f, "<a href=\"#\" class=\"tooltip\" title=\"{tooltip}\">ⓘ</a>")?; + } + + let classes = fmt::from_fn(|f| { + iter::once("rust") + .chain(Some(class).filter(|class| !class.is_empty())) + .chain(extra_classes.iter().map(String::as_str)) + .joined(" ", f) }); - write_str(out, format_args!("<a href=\"#\" class=\"tooltip\" title=\"{tooltip}\">ⓘ</a>")); - } - if let Some(extra) = extra_content { - out.push_str(extra); - } - if class.is_empty() { - write_str( - out, - format_args!( - "<pre class=\"rust{}{}\">", - if extra_classes.is_empty() { "" } else { " " }, - extra_classes.join(" ") - ), - ); - } else { - write_str( - out, - format_args!( - "<pre class=\"rust {class}{}{}\">", - if extra_classes.is_empty() { "" } else { " " }, - extra_classes.join(" ") - ), - ); - } - write_str(out, format_args!("<code>")); + write!(f, "<pre class=\"{classes}\"><code>") + }) } /// Check if two `Class` can be merged together. In the following rules, "unclassified" means `None` @@ -577,8 +559,8 @@ pub(super) fn write_code( }); } -fn write_footer(out: &mut String, playground_button: Option<&str>) { - write_str(out, format_args!("</code></pre>{}</div>", playground_button.unwrap_or_default())); +fn write_footer(playground_button: Option<&str>) -> impl Display { + fmt::from_fn(move |f| write!(f, "</code></pre>{}</div>", playground_button.unwrap_or_default())) } /// How a span of text is classified. Mostly corresponds to token kinds. @@ -1262,6 +1244,64 @@ fn string<W: Write>( } } +fn generate_link_to_def( + out: &mut impl Write, + text_s: &str, + klass: Class, + href_context: &Option<HrefContext<'_, '_>>, + def_span: Span, + open_tag: bool, +) -> bool { + if let Some(href_context) = href_context + && let Some(href) = + href_context.context.shared.span_correspondence_map.get(&def_span).and_then(|href| { + let context = href_context.context; + // FIXME: later on, it'd be nice to provide two links (if possible) for all items: + // one to the documentation page and one to the source definition. + // FIXME: currently, external items only generate a link to their documentation, + // a link to their definition can be generated using this: + // https://github.com/rust-lang/rust/blob/60f1a2fc4b535ead9c85ce085fdce49b1b097531/src/librustdoc/html/render/context.rs#L315-L338 + match href { + LinkFromSrc::Local(span) => { + context.href_from_span_relative(*span, &href_context.current_href) + } + LinkFromSrc::External(def_id) => { + format::href_with_root_path(*def_id, context, Some(href_context.root_path)) + .ok() + .map(|(url, _, _)| url) + } + LinkFromSrc::Primitive(prim) => format::href_with_root_path( + PrimitiveType::primitive_locations(context.tcx())[prim], + context, + Some(href_context.root_path), + ) + .ok() + .map(|(url, _, _)| url), + LinkFromSrc::Doc(def_id) => { + format::href_with_root_path(*def_id, context, Some(href_context.root_path)) + .ok() + .map(|(doc_link, _, _)| doc_link) + } + } + }) + { + if !open_tag { + // We're already inside an element which has the same klass, no need to give it + // again. + write!(out, "<a href=\"{href}\">{text_s}").unwrap(); + } else { + let klass_s = klass.as_html(); + if klass_s.is_empty() { + write!(out, "<a href=\"{href}\">{text_s}").unwrap(); + } else { + write!(out, "<a class=\"{klass_s}\" href=\"{href}\">{text_s}").unwrap(); + } + } + return true; + } + false +} + /// This function writes `text` into `out` with some modifications depending on `klass`: /// /// * If `klass` is `None`, `text` is written into `out` with no modification. @@ -1291,10 +1331,14 @@ fn string_without_closing_tag<T: Display>( return Some("</span>"); }; + let mut added_links = false; let mut text_s = text.to_string(); if text_s.contains("::") { + let mut span = def_span.with_hi(def_span.lo()); text_s = text_s.split("::").intersperse("::").fold(String::new(), |mut path, t| { + span = span.with_hi(span.hi() + BytePos(t.len() as _)); match t { + "::" => write!(&mut path, "::"), "self" | "Self" => write!( &mut path, "<span class=\"{klass}\">{t}</span>", @@ -1307,58 +1351,24 @@ fn string_without_closing_tag<T: Display>( klass = Class::KeyWord.as_html(), ) } - t => write!(&mut path, "{t}"), + t => { + if !t.is_empty() + && generate_link_to_def(&mut path, t, klass, href_context, span, open_tag) + { + added_links = true; + write!(&mut path, "</a>") + } else { + write!(&mut path, "{t}") + } + } } .expect("Failed to build source HTML path"); + span = span.with_lo(span.lo() + BytePos(t.len() as _)); path }); } - if let Some(href_context) = href_context - && let Some(href) = href_context.context.shared.span_correspondence_map.get(&def_span) - && let Some(href) = { - let context = href_context.context; - // FIXME: later on, it'd be nice to provide two links (if possible) for all items: - // one to the documentation page and one to the source definition. - // FIXME: currently, external items only generate a link to their documentation, - // a link to their definition can be generated using this: - // https://github.com/rust-lang/rust/blob/60f1a2fc4b535ead9c85ce085fdce49b1b097531/src/librustdoc/html/render/context.rs#L315-L338 - match href { - LinkFromSrc::Local(span) => { - context.href_from_span_relative(*span, &href_context.current_href) - } - LinkFromSrc::External(def_id) => { - format::href_with_root_path(*def_id, context, Some(href_context.root_path)) - .ok() - .map(|(url, _, _)| url) - } - LinkFromSrc::Primitive(prim) => format::href_with_root_path( - PrimitiveType::primitive_locations(context.tcx())[prim], - context, - Some(href_context.root_path), - ) - .ok() - .map(|(url, _, _)| url), - LinkFromSrc::Doc(def_id) => { - format::href_with_root_path(*def_id, context, Some(href_context.root_path)) - .ok() - .map(|(doc_link, _, _)| doc_link) - } - } - } - { - if !open_tag { - // We're already inside an element which has the same klass, no need to give it - // again. - write!(out, "<a href=\"{href}\">{text_s}").unwrap(); - } else { - let klass_s = klass.as_html(); - if klass_s.is_empty() { - write!(out, "<a href=\"{href}\">{text_s}").unwrap(); - } else { - write!(out, "<a class=\"{klass_s}\" href=\"{href}\">{text_s}").unwrap(); - } - } + if !added_links && generate_link_to_def(out, &text_s, klass, href_context, def_span, open_tag) { return Some("</a>"); } if !open_tag { diff --git a/src/librustdoc/html/markdown.rs b/src/librustdoc/html/markdown.rs index 4addf2c3c96..7065de14c8e 100644 --- a/src/librustdoc/html/markdown.rs +++ b/src/librustdoc/html/markdown.rs @@ -321,31 +321,34 @@ impl<'a, I: Iterator<Item = Event<'a>>> Iterator for CodeBlocks<'_, 'a, I> { )) }); - let tooltip = if ignore == Ignore::All { - highlight::Tooltip::IgnoreAll - } else if let Ignore::Some(platforms) = ignore { - highlight::Tooltip::IgnoreSome(platforms) - } else if compile_fail { - highlight::Tooltip::CompileFail - } else if should_panic { - highlight::Tooltip::ShouldPanic - } else if explicit_edition { - highlight::Tooltip::Edition(edition) - } else { - highlight::Tooltip::None + let tooltip = { + use highlight::Tooltip::*; + + if ignore == Ignore::All { + Some(IgnoreAll) + } else if let Ignore::Some(platforms) = ignore { + Some(IgnoreSome(platforms)) + } else if compile_fail { + Some(CompileFail) + } else if should_panic { + Some(ShouldPanic) + } else if explicit_edition { + Some(Edition(edition)) + } else { + None + } }; // insert newline to clearly separate it from the // previous block so we can shorten the html output - let mut s = String::new(); - s.push('\n'); - - highlight::render_example_with_highlighting( - &text, - &mut s, - tooltip, - playground_button.as_deref(), - &added_classes, + let s = format!( + "\n{}", + highlight::render_example_with_highlighting( + &text, + tooltip.as_ref(), + playground_button.as_deref(), + &added_classes, + ) ); Some(Event::Html(s.into())) } diff --git a/src/librustdoc/html/render/mod.rs b/src/librustdoc/html/render/mod.rs index 6d684449b6d..97dcaf57cdf 100644 --- a/src/librustdoc/html/render/mod.rs +++ b/src/librustdoc/html/render/mod.rs @@ -48,18 +48,19 @@ use std::path::PathBuf; use std::{fs, str}; use askama::Template; +use indexmap::IndexMap; use itertools::Either; use rustc_ast::join_path_syms; use rustc_data_structures::fx::{FxHashSet, FxIndexMap, FxIndexSet}; -use rustc_hir::attrs::{DeprecatedSince, Deprecation}; +use rustc_hir as hir; +use rustc_hir::attrs::{AttributeKind, DeprecatedSince, Deprecation}; +use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, DefIdSet}; use rustc_hir::{ConstStability, Mutability, RustcVersion, StabilityLevel, StableSince}; use rustc_middle::ty::print::PrintTraitRefExt; use rustc_middle::ty::{self, TyCtxt}; use rustc_span::symbol::{Symbol, sym}; use rustc_span::{BytePos, DUMMY_SP, FileName, RealFileName}; -use serde::ser::SerializeMap; -use serde::{Serialize, Serializer}; use tracing::{debug, info}; pub(crate) use self::context::*; @@ -75,7 +76,6 @@ use crate::html::escape::Escape; use crate::html::format::{ Ending, HrefError, PrintWithSpace, href, print_abi_with_space, print_constness_with_space, print_default_space, print_generic_bounds, print_where_clause, visibility_print_with_space, - write_str, }; use crate::html::markdown::{ HeadingOffset, IdMap, Markdown, MarkdownItemInfo, MarkdownSummaryLine, @@ -601,7 +601,12 @@ impl AllTypes { } fmt::from_fn(|f| { - f.write_str("<h1>List of all items</h1>")?; + f.write_str( + "<div class=\"main-heading\">\ + <h1>List of all items</h1>\ + <rustdoc-toolbar></rustdoc-toolbar>\ + </div>", + )?; // Note: print_entries does not escape the title, because we know the current set of titles // doesn't require escaping. print_entries(&self.structs, ItemSection::Structs).fmt(f)?; @@ -1310,43 +1315,6 @@ fn render_assoc_item( }) } -struct CodeAttribute(String); - -fn render_code_attribute(prefix: &str, code_attr: CodeAttribute, w: &mut impl fmt::Write) { - write!( - w, - "<div class=\"code-attribute\">{prefix}{attr}</div>", - prefix = prefix, - attr = code_attr.0 - ) - .unwrap(); -} - -// When an attribute is rendered inside a <code> tag, it is formatted using -// a div to produce a newline after it. -fn render_attributes_in_code( - w: &mut impl fmt::Write, - it: &clean::Item, - prefix: &str, - cx: &Context<'_>, -) { - for attr in it.attributes(cx.tcx(), cx.cache()) { - render_code_attribute(prefix, CodeAttribute(attr), w); - } -} - -/// used for type aliases to only render their `repr` attribute. -fn render_repr_attributes_in_code( - w: &mut impl fmt::Write, - cx: &Context<'_>, - def_id: DefId, - item_type: ItemType, -) { - if let Some(repr) = clean::repr_attributes(cx.tcx(), cx.cache(), def_id, item_type) { - render_code_attribute("", CodeAttribute(repr), w); - } -} - #[derive(Copy, Clone)] enum AssocItemLink<'a> { Anchor(Option<&'a str>), @@ -1507,12 +1475,10 @@ fn render_assoc_items_inner( ) } }; - let mut impls_buf = String::new(); - for i in &non_trait { - write_str( - &mut impls_buf, - format_args!( - "{}", + let impls_buf = fmt::from_fn(|f| { + non_trait + .iter() + .map(|i| { render_impl( cx, i, @@ -1528,9 +1494,11 @@ fn render_assoc_items_inner( toggle_open_by_default: true, }, ) - ), - ); - } + }) + .joined("", f) + }) + .to_string(); + if !impls_buf.is_empty() { write!( w, @@ -1682,91 +1650,85 @@ fn notable_traits_button(ty: &clean::Type, cx: &Context<'_>) -> Option<impl fmt: } fn notable_traits_decl(ty: &clean::Type, cx: &Context<'_>) -> (String, String) { - let mut out = String::new(); - let did = ty.def_id(cx.cache()).expect("notable_traits_button already checked this"); let impls = cx.cache().impls.get(&did).expect("notable_traits_button already checked this"); - for i in impls { - let impl_ = i.inner_impl(); - if impl_.polarity != ty::ImplPolarity::Positive { - continue; - } - - if !ty.is_doc_subtype_of(&impl_.for_, cx.cache()) { - // Two different types might have the same did, - // without actually being the same. - continue; - } - if let Some(trait_) = &impl_.trait_ { - let trait_did = trait_.def_id(); - - if cx.cache().traits.get(&trait_did).is_some_and(|t| t.is_notable_trait(cx.tcx())) { - if out.is_empty() { - write_str( - &mut out, - format_args!( - "<h3>Notable traits for <code>{}</code></h3>\ - <pre><code>", - impl_.for_.print(cx) - ), - ); + let out = fmt::from_fn(|f| { + let mut notable_impls = impls + .iter() + .map(|impl_| impl_.inner_impl()) + .filter(|impl_| impl_.polarity == ty::ImplPolarity::Positive) + .filter(|impl_| { + // Two different types might have the same did, without actually being the same. + ty.is_doc_subtype_of(&impl_.for_, cx.cache()) + }) + .filter_map(|impl_| { + if let Some(trait_) = &impl_.trait_ + && let trait_did = trait_.def_id() + && let Some(trait_) = cx.cache().traits.get(&trait_did) + && trait_.is_notable_trait(cx.tcx()) + { + Some((impl_, trait_did)) + } else { + None } + }) + .peekable(); - write_str( - &mut out, - format_args!("<div class=\"where\">{}</div>", impl_.print(false, cx)), - ); - for it in &impl_.items { - if let clean::AssocTypeItem(ref tydef, ref _bounds) = it.kind { - let empty_set = FxIndexSet::default(); - let src_link = AssocItemLink::GotoSource(trait_did.into(), &empty_set); - write_str( - &mut out, - format_args!( - "<div class=\"where\"> {};</div>", - assoc_type( - it, - &tydef.generics, - &[], // intentionally leaving out bounds - Some(&tydef.type_), - src_link, - 0, - cx, - ) - ), - ); - } - } + let has_notable_impl = if let Some((impl_, _)) = notable_impls.peek() { + write!( + f, + "<h3>Notable traits for <code>{}</code></h3>\ + <pre><code>", + impl_.for_.print(cx) + )?; + true + } else { + false + }; + + for (impl_, trait_did) in notable_impls { + write!(f, "<div class=\"where\">{}</div>", impl_.print(false, cx))?; + for it in &impl_.items { + let clean::AssocTypeItem(tydef, ..) = &it.kind else { + continue; + }; + + let empty_set = FxIndexSet::default(); + let src_link = AssocItemLink::GotoSource(trait_did.into(), &empty_set); + + write!( + f, + "<div class=\"where\"> {};</div>", + assoc_type( + it, + &tydef.generics, + &[], // intentionally leaving out bounds + Some(&tydef.type_), + src_link, + 0, + cx, + ) + )?; } } - } - if out.is_empty() { - out.push_str("</code></pre>"); - } + + if !has_notable_impl { + f.write_str("</code></pre>")?; + } + + Ok(()) + }) + .to_string(); (format!("{:#}", ty.print(cx)), out) } fn notable_traits_json<'a>(tys: impl Iterator<Item = &'a clean::Type>, cx: &Context<'_>) -> String { - let mut mp: Vec<(String, String)> = tys.map(|ty| notable_traits_decl(ty, cx)).collect(); - mp.sort_by(|(name1, _html1), (name2, _html2)| name1.cmp(name2)); - struct NotableTraitsMap(Vec<(String, String)>); - impl Serialize for NotableTraitsMap { - fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> - where - S: Serializer, - { - let mut map = serializer.serialize_map(Some(self.0.len()))?; - for item in &self.0 { - map.serialize_entry(&item.0, &item.1)?; - } - map.end() - } - } - serde_json::to_string(&NotableTraitsMap(mp)) - .expect("serialize (string, string) -> json object cannot fail") + let mut mp = tys.map(|ty| notable_traits_decl(ty, cx)).collect::<IndexMap<_, _>>(); + mp.sort_unstable_keys(); + serde_json::to_string(&mp).expect("serialize (string, string) -> json object cannot fail") } #[derive(Clone, Copy, Debug)] @@ -1840,27 +1802,19 @@ fn render_impl( document_item_info(cx, it, Some(parent)) .render_into(&mut info_buffer) .unwrap(); - write_str( - &mut doc_buffer, - format_args!("{}", document_full(item, cx, HeadingOffset::H5)), - ); + doc_buffer = document_full(item, cx, HeadingOffset::H5).to_string(); short_documented = false; } else { // In case the item isn't documented, // provide short documentation from the trait. - write_str( - &mut doc_buffer, - format_args!( - "{}", - document_short( - it, - cx, - link, - parent, - rendering_params.show_def_docs, - ) - ), - ); + doc_buffer = document_short( + it, + cx, + link, + parent, + rendering_params.show_def_docs, + ) + .to_string(); } } } else { @@ -1868,21 +1822,14 @@ fn render_impl( .render_into(&mut info_buffer) .unwrap(); if rendering_params.show_def_docs { - write_str( - &mut doc_buffer, - format_args!("{}", document_full(item, cx, HeadingOffset::H5)), - ); + doc_buffer = document_full(item, cx, HeadingOffset::H5).to_string(); short_documented = false; } } } else { - write_str( - &mut doc_buffer, - format_args!( - "{}", - document_short(item, cx, link, parent, rendering_params.show_def_docs) - ), - ); + doc_buffer = + document_short(item, cx, link, parent, rendering_params.show_def_docs) + .to_string(); } } let mut w = if short_documented && trait_.is_some() { @@ -2959,3 +2906,142 @@ fn render_call_locations<W: fmt::Write>( w.write_str("</div>") } + +fn render_attributes_in_code( + w: &mut impl fmt::Write, + item: &clean::Item, + prefix: &str, + cx: &Context<'_>, +) { + for attr in &item.attrs.other_attrs { + let hir::Attribute::Parsed(kind) = attr else { continue }; + let attr = match kind { + AttributeKind::LinkSection { name, .. } => { + Cow::Owned(format!("#[unsafe(link_section = {})]", Escape(&format!("{name:?}")))) + } + AttributeKind::NoMangle(..) => Cow::Borrowed("#[unsafe(no_mangle)]"), + AttributeKind::ExportName { name, .. } => { + Cow::Owned(format!("#[unsafe(export_name = {})]", Escape(&format!("{name:?}")))) + } + AttributeKind::NonExhaustive(..) => Cow::Borrowed("#[non_exhaustive]"), + _ => continue, + }; + render_code_attribute(prefix, attr.as_ref(), w); + } + + if let Some(def_id) = item.def_id() + && let Some(repr) = repr_attribute(cx.tcx(), cx.cache(), def_id) + { + render_code_attribute(prefix, &repr, w); + } +} + +fn render_repr_attribute_in_code(w: &mut impl fmt::Write, cx: &Context<'_>, def_id: DefId) { + if let Some(repr) = repr_attribute(cx.tcx(), cx.cache(), def_id) { + render_code_attribute("", &repr, w); + } +} + +fn render_code_attribute(prefix: &str, attr: &str, w: &mut impl fmt::Write) { + write!(w, "<div class=\"code-attribute\">{prefix}{attr}</div>").unwrap(); +} + +/// Compute the *public* `#[repr]` of the item given by `DefId`. +/// +/// Read more about it here: +/// <https://doc.rust-lang.org/nightly/rustdoc/advanced-features.html#repr-documenting-the-representation-of-a-type>. +fn repr_attribute<'tcx>( + tcx: TyCtxt<'tcx>, + cache: &Cache, + def_id: DefId, +) -> Option<Cow<'static, str>> { + let adt = match tcx.def_kind(def_id) { + DefKind::Struct | DefKind::Enum | DefKind::Union => tcx.adt_def(def_id), + _ => return None, + }; + let repr = adt.repr(); + + let is_visible = |def_id| cache.document_hidden || !tcx.is_doc_hidden(def_id); + let is_public_field = |field: &ty::FieldDef| { + (cache.document_private || field.vis.is_public()) && is_visible(field.did) + }; + + if repr.transparent() { + // The transparent repr is public iff the non-1-ZST field is public and visible or + // – in case all fields are 1-ZST fields — at least one field is public and visible. + let is_public = 'is_public: { + // `#[repr(transparent)]` can only be applied to structs and single-variant enums. + let var = adt.variant(rustc_abi::FIRST_VARIANT); // the first and only variant + + if !is_visible(var.def_id) { + break 'is_public false; + } + + // Side note: There can only ever be one or zero non-1-ZST fields. + let non_1zst_field = var.fields.iter().find(|field| { + let ty = ty::TypingEnv::post_analysis(tcx, field.did) + .as_query_input(tcx.type_of(field.did).instantiate_identity()); + tcx.layout_of(ty).is_ok_and(|layout| !layout.is_1zst()) + }); + + match non_1zst_field { + Some(field) => is_public_field(field), + None => var.fields.is_empty() || var.fields.iter().any(is_public_field), + } + }; + + // Since the transparent repr can't have any other reprs or + // repr modifiers beside it, we can safely return early here. + return is_public.then(|| "#[repr(transparent)]".into()); + } + + // Fast path which avoids looking through the variants and fields in + // the common case of no `#[repr]` or in the case of `#[repr(Rust)]`. + // FIXME: This check is not very robust / forward compatible! + if !repr.c() + && !repr.simd() + && repr.int.is_none() + && repr.pack.is_none() + && repr.align.is_none() + { + return None; + } + + // The repr is public iff all components are public and visible. + let is_public = adt + .variants() + .iter() + .all(|variant| is_visible(variant.def_id) && variant.fields.iter().all(is_public_field)); + if !is_public { + return None; + } + + let mut result = Vec::<Cow<'_, _>>::new(); + + if repr.c() { + result.push("C".into()); + } + if repr.simd() { + result.push("simd".into()); + } + if let Some(int) = repr.int { + let prefix = if int.is_signed() { 'i' } else { 'u' }; + let int = match int { + rustc_abi::IntegerType::Pointer(_) => format!("{prefix}size"), + rustc_abi::IntegerType::Fixed(int, _) => { + format!("{prefix}{}", int.size().bytes() * 8) + } + }; + result.push(int.into()); + } + + // Render modifiers last. + if let Some(pack) = repr.pack { + result.push(format!("packed({})", pack.bytes()).into()); + } + if let Some(align) = repr.align { + result.push(format!("align({})", align.bytes()).into()); + } + + (!result.is_empty()).then(|| format!("#[repr({})]", result.join(", ")).into()) +} diff --git a/src/librustdoc/html/render/print_item.rs b/src/librustdoc/html/render/print_item.rs index afa438f2596..adfc7481c73 100644 --- a/src/librustdoc/html/render/print_item.rs +++ b/src/librustdoc/html/render/print_item.rs @@ -21,7 +21,7 @@ use super::{ collect_paths_for_type, document, ensure_trailing_slash, get_filtered_impls_for_reference, item_ty_to_section, notable_traits_button, notable_traits_json, render_all_impls, render_assoc_item, render_assoc_items, render_attributes_in_code, render_impl, - render_repr_attributes_in_code, render_rightside, render_stability_since_raw, + render_repr_attribute_in_code, render_rightside, render_stability_since_raw, render_stability_since_raw_with_extra, write_section_heading, }; use crate::clean; @@ -1555,7 +1555,7 @@ impl<'clean> DisplayEnum<'clean> { wrap_item(w, |w| { if is_type_alias { // For now the only attributes we render for type aliases are `repr` attributes. - render_repr_attributes_in_code(w, cx, self.def_id, ItemType::Enum); + render_repr_attribute_in_code(w, cx, self.def_id); } else { render_attributes_in_code(w, it, "", cx); } @@ -2017,7 +2017,7 @@ impl<'a> DisplayStruct<'a> { wrap_item(w, |w| { if is_type_alias { // For now the only attributes we render for type aliases are `repr` attributes. - render_repr_attributes_in_code(w, cx, self.def_id, ItemType::Struct); + render_repr_attribute_in_code(w, cx, self.def_id); } else { render_attributes_in_code(w, it, "", cx); } @@ -2371,7 +2371,7 @@ fn render_union( fmt::from_fn(move |mut f| { if is_type_alias { // For now the only attributes we render for type aliases are `repr` attributes. - render_repr_attributes_in_code(f, cx, def_id, ItemType::Union); + render_repr_attribute_in_code(f, cx, def_id); } else { render_attributes_in_code(f, it, "", cx); } diff --git a/src/librustdoc/html/render/search_index.rs b/src/librustdoc/html/render/search_index.rs index 3ffce61f7c6..7b21c68d2e9 100644 --- a/src/librustdoc/html/render/search_index.rs +++ b/src/librustdoc/html/render/search_index.rs @@ -241,6 +241,34 @@ impl SerializedSearchIndex { self.alias_pointers.push(alias_pointer); index } + /// Add potential search result to the database and return the row ID. + /// + /// The returned ID can be used to attach more data to the search result. + fn add_entry(&mut self, name: Symbol, entry_data: EntryData, desc: String) -> usize { + let fqp = if let Some(module_path_index) = entry_data.module_path { + let mut fqp = self.path_data[module_path_index].as_ref().unwrap().module_path.clone(); + fqp.push(Symbol::intern(&self.names[module_path_index])); + fqp.push(name); + fqp + } else { + vec![name] + }; + // If a path with the same name already exists, but no entry does, + // we can fill in the entry without having to allocate a new row ID. + // + // Because paths and entries both share the same index, using the same + // ID saves space by making the tree smaller. + if let Some(&other_path) = self.crate_paths_index.get(&(entry_data.ty, fqp)) + && self.entry_data[other_path].is_none() + && self.descs[other_path].is_empty() + { + self.entry_data[other_path] = Some(entry_data); + self.descs[other_path] = desc; + other_path + } else { + self.push(name.as_str().to_string(), None, Some(entry_data), desc, None, None, None) + } + } fn push_path(&mut self, name: String, path_data: PathData) -> usize { self.push(name, Some(path_data), None, String::new(), None, None, None) } @@ -1516,10 +1544,9 @@ pub(crate) fn build_index( .as_ref() .map(|path| serialized_index.get_id_by_module_path(path)); - let new_entry_id = serialized_index.push( - item.name.as_str().to_string(), - None, - Some(EntryData { + let new_entry_id = serialized_index.add_entry( + item.name, + EntryData { ty: item.ty, parent: item.parent_idx, module_path, @@ -1538,11 +1565,8 @@ pub(crate) fn build_index( None }, krate: crate_idx, - }), + }, item.desc.to_string(), - None, // filled in after all the types have been indexed - None, - None, ); // Aliases diff --git a/src/librustdoc/html/render/span_map.rs b/src/librustdoc/html/render/span_map.rs index 8bc2e0bd957..ef7ce33298d 100644 --- a/src/librustdoc/html/render/span_map.rs +++ b/src/librustdoc/html/render/span_map.rs @@ -2,11 +2,9 @@ use std::path::{Path, PathBuf}; use rustc_data_structures::fx::{FxHashMap, FxIndexMap}; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::{DefId, LOCAL_CRATE}; -use rustc_hir::intravisit::{self, Visitor}; -use rustc_hir::{ - ExprKind, HirId, Item, ItemKind, Mod, Node, Pat, PatExpr, PatExprKind, PatKind, QPath, -}; +use rustc_hir::def_id::{DefId, LOCAL_CRATE, LocalDefId}; +use rustc_hir::intravisit::{self, Visitor, VisitorExt}; +use rustc_hir::{ExprKind, HirId, Item, ItemKind, Mod, Node, QPath}; use rustc_middle::hir::nested_filter; use rustc_middle::ty::TyCtxt; use rustc_span::hygiene::MacroKind; @@ -67,7 +65,7 @@ struct SpanMapVisitor<'tcx> { impl SpanMapVisitor<'_> { /// This function is where we handle `hir::Path` elements and add them into the "span map". - fn handle_path(&mut self, path: &rustc_hir::Path<'_>) { + fn handle_path(&mut self, path: &rustc_hir::Path<'_>, only_use_last_segment: bool) { match path.res { // FIXME: For now, we handle `DefKind` if it's not a `DefKind::TyParam`. // Would be nice to support them too alongside the other `DefKind` @@ -79,24 +77,36 @@ impl SpanMapVisitor<'_> { LinkFromSrc::External(def_id) }; // In case the path ends with generics, we remove them from the span. - let span = path - .segments - .last() - .map(|last| { - // In `use` statements, the included item is not in the path segments. - // However, it doesn't matter because you can't have generics on `use` - // statements. - if path.span.contains(last.ident.span) { - path.span.with_hi(last.ident.span.hi()) - } else { - path.span - } - }) - .unwrap_or(path.span); + let span = if only_use_last_segment + && let Some(path_span) = path.segments.last().map(|segment| segment.ident.span) + { + path_span + } else { + path.segments + .last() + .map(|last| { + // In `use` statements, the included item is not in the path segments. + // However, it doesn't matter because you can't have generics on `use` + // statements. + if path.span.contains(last.ident.span) { + path.span.with_hi(last.ident.span.hi()) + } else { + path.span + } + }) + .unwrap_or(path.span) + }; self.matches.insert(span, link); } Res::Local(_) if let Some(span) = self.tcx.hir_res_span(path.res) => { - self.matches.insert(path.span, LinkFromSrc::Local(clean::Span::new(span))); + let path_span = if only_use_last_segment + && let Some(path_span) = path.segments.last().map(|segment| segment.ident.span) + { + path_span + } else { + path.span + }; + self.matches.insert(path_span, LinkFromSrc::Local(clean::Span::new(span))); } Res::PrimTy(p) => { // FIXME: Doesn't handle "path-like" primitives like arrays or tuples. @@ -189,31 +199,23 @@ impl SpanMapVisitor<'_> { self.matches.insert(span, link); } } +} - fn handle_pat(&mut self, p: &Pat<'_>) { - let mut check_qpath = |qpath, hir_id| match qpath { - QPath::TypeRelative(_, path) if matches!(path.res, Res::Err) => { - self.infer_id(path.hir_id, Some(hir_id), qpath.span()); - } - QPath::Resolved(_, path) => self.handle_path(path), - _ => {} - }; - match p.kind { - PatKind::Binding(_, _, _, Some(p)) => self.handle_pat(p), - PatKind::Struct(qpath, _, _) | PatKind::TupleStruct(qpath, _, _) => { - check_qpath(qpath, p.hir_id) - } - PatKind::Expr(PatExpr { kind: PatExprKind::Path(qpath), hir_id, .. }) => { - check_qpath(*qpath, *hir_id) - } - PatKind::Or(pats) => { - for pat in pats { - self.handle_pat(pat); - } - } - _ => {} +// This is a reimplementation of `hir_enclosing_body_owner` which allows to fail without +// panicking. +fn hir_enclosing_body_owner(tcx: TyCtxt<'_>, hir_id: HirId) -> Option<LocalDefId> { + for (_, node) in tcx.hir_parent_iter(hir_id) { + // FIXME: associated type impl items don't have an associated body, so we don't handle + // them currently. + if let Node::ImplItem(impl_item) = node + && matches!(impl_item.kind, rustc_hir::ImplItemKind::Type(_)) + { + return None; + } else if let Some((def_id, _)) = node.associated_body() { + return Some(def_id); } } + None } impl<'tcx> Visitor<'tcx> for SpanMapVisitor<'tcx> { @@ -227,12 +229,42 @@ impl<'tcx> Visitor<'tcx> for SpanMapVisitor<'tcx> { if self.handle_macro(path.span) { return; } - self.handle_path(path); + self.handle_path(path, false); intravisit::walk_path(self, path); } - fn visit_pat(&mut self, p: &Pat<'tcx>) { - self.handle_pat(p); + fn visit_qpath(&mut self, qpath: &QPath<'tcx>, id: HirId, _span: Span) { + match *qpath { + QPath::TypeRelative(qself, path) => { + if matches!(path.res, Res::Err) { + let tcx = self.tcx; + if let Some(body_id) = hir_enclosing_body_owner(tcx, id) { + let typeck_results = tcx.typeck_body(tcx.hir_body_owned_by(body_id).id()); + let path = rustc_hir::Path { + // We change the span to not include parens. + span: path.ident.span, + res: typeck_results.qpath_res(qpath, id), + segments: &[], + }; + self.handle_path(&path, false); + } + } else { + self.infer_id(path.hir_id, Some(id), path.ident.span); + } + + rustc_ast::visit::try_visit!(self.visit_ty_unambig(qself)); + self.visit_path_segment(path); + } + QPath::Resolved(maybe_qself, path) => { + self.handle_path(path, true); + + rustc_ast::visit::visit_opt!(self, visit_ty_unambig, maybe_qself); + if !self.handle_macro(path.span) { + intravisit::walk_path(self, path); + } + } + _ => {} + } } fn visit_mod(&mut self, m: &'tcx Mod<'tcx>, span: Span, id: HirId) { diff --git a/src/librustdoc/html/render/write_shared.rs b/src/librustdoc/html/render/write_shared.rs index e37a5246a76..3a1db805d01 100644 --- a/src/librustdoc/html/render/write_shared.rs +++ b/src/librustdoc/html/render/write_shared.rs @@ -386,8 +386,13 @@ impl CratesIndexPart { let layout = &cx.shared.layout; let style_files = &cx.shared.style_files; const DELIMITER: &str = "\u{FFFC}"; // users are being naughty if they have this - let content = - format!("<h1>List of all crates</h1><ul class=\"all-items\">{DELIMITER}</ul>"); + let content = format!( + "<div class=\"main-heading\">\ + <h1>List of all crates</h1>\ + <rustdoc-toolbar></rustdoc-toolbar>\ + </div>\ + <ul class=\"all-items\">{DELIMITER}</ul>" + ); let template = layout::render(layout, &page, "", content, style_files); SortedTemplate::from_template(&template, DELIMITER) .expect("Object Replacement Character (U+FFFC) should not appear in the --index-page") diff --git a/src/librustdoc/html/static/js/main.js b/src/librustdoc/html/static/js/main.js index 75febd6f737..3ea9de381ec 100644 --- a/src/librustdoc/html/static/js/main.js +++ b/src/librustdoc/html/static/js/main.js @@ -2227,11 +2227,18 @@ function preLoadCss(cssUrl) { }); }()); -// This section is a bugfix for firefox: when copying text with `user-select: none`, it adds -// extra backline characters. + +// Workaround for browser-specific bugs when copying code snippets. +// +// * In Firefox, copying text that includes elements with `user-select: none` +// inserts extra blank lines. +// - Firefox issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1273836 +// - Rust issue: https://github.com/rust-lang/rust/issues/141464 // -// Rustdoc issue: Workaround for https://github.com/rust-lang/rust/issues/141464 -// Firefox issue: https://bugzilla.mozilla.org/show_bug.cgi?id=1273836 +// * In Chromium-based browsers, `document.getSelection()` includes elements +// with `user-select: none`, causing unwanted line numbers to be copied. +// - Chromium issue: https://issues.chromium.org/issues/446539520 +// - Rust issue: https://github.com/rust-lang/rust/issues/146816 (function() { document.body.addEventListener("copy", event => { let target = nonnull(event.target); @@ -2248,9 +2255,13 @@ function preLoadCss(cssUrl) { if (!isInsideCode) { return; } - const selection = document.getSelection(); - // @ts-expect-error - nonnull(event.clipboardData).setData("text/plain", selection.toString()); + const selection = nonnull(document.getSelection()); + const text = Array.from({ length: selection.rangeCount }, (_, i) => { + const fragment = selection.getRangeAt(i).cloneContents(); + fragment.querySelectorAll("[data-nosnippet]").forEach(el => el.remove()); + return fragment.textContent; + }).join(""); + nonnull(event.clipboardData).setData("text/plain", text); event.preventDefault(); }); }()); diff --git a/src/librustdoc/html/static/js/stringdex.js b/src/librustdoc/html/static/js/stringdex.js index 5bdc81e330e..6299576d564 100644 --- a/src/librustdoc/html/static/js/stringdex.js +++ b/src/librustdoc/html/static/js/stringdex.js @@ -1108,22 +1108,39 @@ function loadDatabase(hooks) { const id2 = id1 + ((nodeid[4] << 8) | nodeid[5]); leaves = RoaringBitmap.makeSingleton(id1) .union(RoaringBitmap.makeSingleton(id2)); + } else if (!isWhole && (nodeid[0] & 0xf0) === 0x80) { + const id1 = ((nodeid[0] & 0x0f) << 16) | (nodeid[1] << 8) | nodeid[2]; + const id2 = id1 + ((nodeid[3] << 4) | ((nodeid[4] >> 4) & 0x0f)); + const id3 = id2 + (((nodeid[4] & 0x0f) << 8) | nodeid[5]); + leaves = RoaringBitmap.makeSingleton(id1) + .union(RoaringBitmap.makeSingleton(id2)) + .union(RoaringBitmap.makeSingleton(id3)); } else { leaves = RoaringBitmap.makeSingleton( (nodeid[2] << 24) | (nodeid[3] << 16) | (nodeid[4] << 8) | nodeid[5], ); } - const data = (nodeid[0] & 0x20) !== 0 ? - Uint8Array.of(((nodeid[0] & 0x0f) << 4) | (nodeid[1] >> 4)) : - EMPTY_UINT8; - newPromise = Promise.resolve(new PrefixSearchTree( - EMPTY_SEARCH_TREE_BRANCHES, - EMPTY_SEARCH_TREE_BRANCHES, - data, - isWhole ? leaves : EMPTY_BITMAP, - isWhole ? EMPTY_BITMAP : leaves, - )); + if (isWhole) { + const data = (nodeid[0] & 0x20) !== 0 ? + Uint8Array.of(((nodeid[0] & 0x0f) << 4) | (nodeid[1] >> 4)) : + EMPTY_UINT8; + newPromise = Promise.resolve(new PrefixSearchTree( + EMPTY_SEARCH_TREE_BRANCHES, + EMPTY_SEARCH_TREE_BRANCHES, + data, + leaves, + EMPTY_BITMAP, + )); + } else { + const data = (nodeid[0] & 0xf0) === 0x80 ? 0 : ( + ((nodeid[0] & 0x0f) << 4) | (nodeid[1] >> 4)); + newPromise = Promise.resolve(new SuffixSearchTree( + EMPTY_SEARCH_TREE_BRANCHES, + data, + leaves, + )); + } } else { const hashHex = makeHexFromUint8Array(nodeid); newPromise = new Promise((resolve, reject) => { @@ -2748,6 +2765,7 @@ function loadDatabase(hooks) { // because that's the canonical, hashed version of the data let compression_tag = input[i]; const is_pure_suffixes_only_node = (compression_tag & 0x01) !== 0; + let no_leaves_flag; if (compression_tag > 1) { // compressed node const is_long_compressed = (compression_tag & 0x04) !== 0; @@ -2759,7 +2777,8 @@ function loadDatabase(hooks) { compression_tag |= input[i] << 16; i += 1; } - let dlen = input[i]; + let dlen = input[i] & 0x7F; + no_leaves_flag = input[i] & 0x80; i += 1; if (is_data_compressed) { data = data_history[data_history.length - dlen - 1]; @@ -2786,10 +2805,15 @@ function loadDatabase(hooks) { let whole; let suffix; if (is_pure_suffixes_only_node) { - suffix = input[i] === 0 ? - EMPTY_BITMAP1 : - new RoaringBitmap(input, i); - i += suffix.consumed_len_bytes; + if (no_leaves_flag) { + whole = EMPTY_BITMAP; + suffix = EMPTY_BITMAP; + } else { + suffix = input[i] === 0 ? + EMPTY_BITMAP1 : + new RoaringBitmap(input, i); + i += suffix.consumed_len_bytes; + } tree = new SuffixSearchTree( branches, dlen, @@ -2807,7 +2831,7 @@ function loadDatabase(hooks) { let ci = 0; canonical[ci] = 1; ci += 1; - canonical[ci] = dlen; + canonical[ci] = dlen | no_leaves_flag; ci += 1; canonical[ci] = input[coffset]; // suffix child count ci += 1; @@ -2821,10 +2845,9 @@ function loadDatabase(hooks) { } siphashOfBytes(canonical.subarray(0, clen), 0, 0, 0, 0, hash); } else { - if (input[i] === 0xff) { + if (no_leaves_flag) { whole = EMPTY_BITMAP; - suffix = EMPTY_BITMAP1; - i += 1; + suffix = EMPTY_BITMAP; } else { whole = input[i] === 0 ? EMPTY_BITMAP1 : @@ -2856,7 +2879,7 @@ function loadDatabase(hooks) { let ci = 0; canonical[ci] = 0; ci += 1; - canonical[ci] = dlen; + canonical[ci] = dlen | no_leaves_flag; ci += 1; canonical.set(data, ci); ci += data.length; @@ -2880,9 +2903,11 @@ function loadDatabase(hooks) { } hash[2] &= 0x7f; } else { + i += 1; // uncompressed node - const dlen = input [i + 1]; - i += 2; + const dlen = input[i] & 0x7F; + no_leaves_flag = input[i] & 0x80; + i += 1; if (dlen === 0 || is_pure_suffixes_only_node) { data = EMPTY_UINT8; } else { @@ -2897,16 +2922,15 @@ function loadDatabase(hooks) { i += branches_consumed_len_bytes; let whole; let suffix; - if (is_pure_suffixes_only_node) { + if (no_leaves_flag) { + whole = EMPTY_BITMAP; + suffix = EMPTY_BITMAP; + } else if (is_pure_suffixes_only_node) { whole = EMPTY_BITMAP; suffix = input[i] === 0 ? EMPTY_BITMAP1 : new RoaringBitmap(input, i); i += suffix.consumed_len_bytes; - } else if (input[i] === 0xff) { - whole = EMPTY_BITMAP; - suffix = EMPTY_BITMAP; - i += 1; } else { whole = input[i] === 0 ? EMPTY_BITMAP1 : diff --git a/src/librustdoc/html/templates/type_layout.html b/src/librustdoc/html/templates/type_layout.html index 0034552bdd3..49153d58fe9 100644 --- a/src/librustdoc/html/templates/type_layout.html +++ b/src/librustdoc/html/templates/type_layout.html @@ -65,5 +65,10 @@ <strong>Note:</strong> Encountered an error during type layout; {#+ #} the type's layout depended on the type's layout itself. {# #} </p> + {% when Err(LayoutError::InvalidSimd {..}) %} + <p> {# #} + <strong>Note:</strong> Encountered an error during type layout; {#+ #} + the vector type had zero elements or too many elements. {# #} + </p> {% endmatch %} </div> {# #} diff --git a/src/librustdoc/lib.rs b/src/librustdoc/lib.rs index 5d8f8f4bed1..d7ffb25f8bd 100644 --- a/src/librustdoc/lib.rs +++ b/src/librustdoc/lib.rs @@ -1,5 +1,4 @@ // tidy-alphabetical-start -#![cfg_attr(bootstrap, feature(round_char_boundary))] #![doc( html_root_url = "https://doc.rust-lang.org/nightly/", html_playground_url = "https://play.rust-lang.org/" @@ -14,6 +13,7 @@ #![feature(if_let_guard)] #![feature(iter_advance_by)] #![feature(iter_intersperse)] +#![feature(iter_order_by)] #![feature(rustc_private)] #![feature(test)] #![warn(rustc::internal)] diff --git a/src/librustdoc/passes/collect_intra_doc_links.rs b/src/librustdoc/passes/collect_intra_doc_links.rs index 0da42f38251..79d74c3c4eb 100644 --- a/src/librustdoc/passes/collect_intra_doc_links.rs +++ b/src/librustdoc/passes/collect_intra_doc_links.rs @@ -130,6 +130,7 @@ impl Res { DefKind::Static { .. } => "static", DefKind::Field => "field", DefKind::Variant | DefKind::Ctor(..) => "variant", + DefKind::TyAlias => "tyalias", // Now handle things that don't have a specific disambiguator _ => match kind .ns() @@ -1708,6 +1709,7 @@ impl Disambiguator { "value" => NS(Namespace::ValueNS), "macro" => NS(Namespace::MacroNS), "prim" | "primitive" => Primitive, + "tyalias" | "typealias" => Kind(DefKind::TyAlias), _ => return Err((format!("unknown disambiguator `{prefix}`"), 0..idx)), }; diff --git a/src/librustdoc/passes/lint/html_tags.rs b/src/librustdoc/passes/lint/html_tags.rs index da09117b1bb..136ff258048 100644 --- a/src/librustdoc/passes/lint/html_tags.rs +++ b/src/librustdoc/passes/lint/html_tags.rs @@ -364,6 +364,7 @@ impl TagParser { } else { if !self.tag_name.is_empty() { self.in_attrs = true; + // range of the entire tag within dox let mut r = Range { start: range.start + start_pos, end: range.start + pos }; if c == '>' { // In case we have a tag without attribute, we can consider the span to @@ -381,7 +382,7 @@ impl TagParser { for (new_pos, c) in text[pos..].char_indices() { if !c.is_whitespace() { if c == '>' { - r.end = range.start + new_pos + 1; + r.end = range.start + pos + new_pos + 1; found = true; } else if c == '<' { self.handle_lt_in_tag(range.clone(), pos + new_pos, f); diff --git a/src/librustdoc/passes/mod.rs b/src/librustdoc/passes/mod.rs index 475d05b7d0e..f45df8d2d0d 100644 --- a/src/librustdoc/passes/mod.rs +++ b/src/librustdoc/passes/mod.rs @@ -77,11 +77,11 @@ pub(crate) enum Condition { pub(crate) const PASSES: &[Pass] = &[ CHECK_DOC_CFG, CHECK_DOC_TEST_VISIBILITY, + PROPAGATE_DOC_CFG, STRIP_ALIASED_NON_LOCAL, STRIP_HIDDEN, STRIP_PRIVATE, STRIP_PRIV_IMPORTS, - PROPAGATE_DOC_CFG, PROPAGATE_STABILITY, COLLECT_INTRA_DOC_LINKS, COLLECT_TRAIT_IMPLS, @@ -94,11 +94,11 @@ pub(crate) const DEFAULT_PASSES: &[ConditionalPass] = &[ ConditionalPass::always(COLLECT_TRAIT_IMPLS), ConditionalPass::always(CHECK_DOC_TEST_VISIBILITY), ConditionalPass::always(CHECK_DOC_CFG), + ConditionalPass::always(COLLECT_INTRA_DOC_LINKS), ConditionalPass::always(STRIP_ALIASED_NON_LOCAL), ConditionalPass::new(STRIP_HIDDEN, WhenNotDocumentHidden), ConditionalPass::new(STRIP_PRIVATE, WhenNotDocumentPrivate), ConditionalPass::new(STRIP_PRIV_IMPORTS, WhenDocumentPrivate), - ConditionalPass::always(COLLECT_INTRA_DOC_LINKS), ConditionalPass::always(PROPAGATE_DOC_CFG), ConditionalPass::always(PROPAGATE_STABILITY), ConditionalPass::always(RUN_LINTS), diff --git a/src/librustdoc/passes/propagate_doc_cfg.rs b/src/librustdoc/passes/propagate_doc_cfg.rs index eddafa9ba8e..d5b20f2b941 100644 --- a/src/librustdoc/passes/propagate_doc_cfg.rs +++ b/src/librustdoc/passes/propagate_doc_cfg.rs @@ -1,12 +1,12 @@ //! Propagates [`#[doc(cfg(...))]`](https://github.com/rust-lang/rust/issues/43781) to child items. -use std::sync::Arc; +use rustc_ast::token::{Token, TokenKind}; +use rustc_ast::tokenstream::{TokenStream, TokenTree}; +use rustc_hir::{AttrArgs, Attribute}; +use rustc_span::symbol::sym; -use rustc_hir::def_id::LocalDefId; - -use crate::clean::cfg::Cfg; use crate::clean::inline::{load_attrs, merge_attrs}; -use crate::clean::{Crate, Item, ItemKind}; +use crate::clean::{CfgInfo, Crate, Item, ItemKind}; use crate::core::DocContext; use crate::fold::DocFolder; use crate::passes::Pass; @@ -18,80 +18,112 @@ pub(crate) const PROPAGATE_DOC_CFG: Pass = Pass { }; pub(crate) fn propagate_doc_cfg(cr: Crate, cx: &mut DocContext<'_>) -> Crate { - CfgPropagator { parent_cfg: None, parent: None, cx }.fold_crate(cr) + if cx.tcx.features().doc_cfg() { + CfgPropagator { cx, cfg_info: CfgInfo::default() }.fold_crate(cr) + } else { + cr + } } struct CfgPropagator<'a, 'tcx> { - parent_cfg: Option<Arc<Cfg>>, - parent: Option<LocalDefId>, cx: &'a mut DocContext<'tcx>, + cfg_info: CfgInfo, } -impl CfgPropagator<'_, '_> { - // Some items need to merge their attributes with their parents' otherwise a few of them - // (mostly `cfg` ones) will be missing. - fn merge_with_parent_attributes(&mut self, item: &mut Item) { - let check_parent = match &item.kind { - // impl blocks can be in different modules with different cfg and we need to get them - // as well. - ItemKind::ImplItem(_) => false, - kind if kind.is_non_assoc() => true, - _ => return, - }; +/// Returns true if the provided `token` is a `cfg` ident. +fn is_cfg_token(token: &TokenTree) -> bool { + // We only keep `doc(cfg)` items. + matches!(token, TokenTree::Token(Token { kind: TokenKind::Ident(sym::cfg, _,), .. }, _,),) +} - let Some(def_id) = item.item_id.as_def_id().and_then(|def_id| def_id.as_local()) else { - return; - }; +/// We only want to keep `#[cfg()]` and `#[doc(cfg())]` attributes so we rebuild a vec of +/// `TokenTree` with only the tokens we're interested into. +fn filter_non_cfg_tokens_from_list(args_tokens: &TokenStream) -> Vec<TokenTree> { + let mut tokens = Vec::with_capacity(args_tokens.len()); + let mut skip_next_delimited = false; + for token in args_tokens.iter() { + match token { + TokenTree::Delimited(..) => { + if !skip_next_delimited { + tokens.push(token.clone()); + } + skip_next_delimited = false; + } + token if is_cfg_token(token) => { + skip_next_delimited = false; + tokens.push(token.clone()); + } + _ => { + skip_next_delimited = true; + } + } + } + tokens +} - if check_parent { - let expected_parent = self.cx.tcx.opt_local_parent(def_id); - // If parents are different, it means that `item` is a reexport and we need - // to compute the actual `cfg` by iterating through its "real" parents. - if self.parent.is_some() && self.parent == expected_parent { - return; +/// This function goes through the attributes list (`new_attrs`) and extract the `cfg` tokens from +/// it and put them into `attrs`. +fn add_only_cfg_attributes(attrs: &mut Vec<Attribute>, new_attrs: &[Attribute]) { + for attr in new_attrs { + if attr.is_doc_comment() { + continue; + } + let mut attr = attr.clone(); + if let Attribute::Unparsed(ref mut normal) = attr + && let [ident] = &*normal.path.segments + { + let ident = ident.name; + if ident == sym::doc + && let AttrArgs::Delimited(args) = &mut normal.args + { + let tokens = filter_non_cfg_tokens_from_list(&args.tokens); + args.tokens = TokenStream::new(tokens); + attrs.push(attr); + } else if ident == sym::cfg_trace { + // If it's a `cfg()` attribute, we keep it. + attrs.push(attr); } } + } +} +impl CfgPropagator<'_, '_> { + // Some items need to merge their attributes with their parents' otherwise a few of them + // (mostly `cfg` ones) will be missing. + fn merge_with_parent_attributes(&mut self, item: &mut Item) { let mut attrs = Vec::new(); - let mut next_def_id = def_id; - while let Some(parent_def_id) = self.cx.tcx.opt_local_parent(next_def_id) { - attrs.extend_from_slice(load_attrs(self.cx, parent_def_id.to_def_id())); - next_def_id = parent_def_id; + // We only need to merge an item attributes with its parent's in case it's an impl as an + // impl might not be defined in the same module as the item it implements. + // + // Otherwise, `cfg_info` already tracks everything we need so nothing else to do! + if matches!(item.kind, ItemKind::ImplItem(_)) + && let Some(mut next_def_id) = item.item_id.as_local_def_id() + { + while let Some(parent_def_id) = self.cx.tcx.opt_local_parent(next_def_id) { + let x = load_attrs(self.cx, parent_def_id.to_def_id()); + add_only_cfg_attributes(&mut attrs, x); + next_def_id = parent_def_id; + } } - let (_, cfg) = - merge_attrs(self.cx, item.attrs.other_attrs.as_slice(), Some((&attrs, None))); + let (_, cfg) = merge_attrs( + self.cx, + item.attrs.other_attrs.as_slice(), + Some((&attrs, None)), + &mut self.cfg_info, + ); item.inner.cfg = cfg; } } impl DocFolder for CfgPropagator<'_, '_> { fn fold_item(&mut self, mut item: Item) -> Option<Item> { - let old_parent_cfg = self.parent_cfg.clone(); + let old_cfg_info = self.cfg_info.clone(); self.merge_with_parent_attributes(&mut item); - let new_cfg = match (self.parent_cfg.take(), item.inner.cfg.take()) { - (None, None) => None, - (Some(rc), None) | (None, Some(rc)) => Some(rc), - (Some(mut a), Some(b)) => { - let b = Arc::try_unwrap(b).unwrap_or_else(|rc| Cfg::clone(&rc)); - *Arc::make_mut(&mut a) &= b; - Some(a) - } - }; - self.parent_cfg = new_cfg.clone(); - item.inner.cfg = new_cfg; - - let old_parent = - if let Some(def_id) = item.item_id.as_def_id().and_then(|def_id| def_id.as_local()) { - self.parent.replace(def_id) - } else { - self.parent.take() - }; let result = self.fold_item_recur(item); - self.parent_cfg = old_parent_cfg; - self.parent = old_parent; + self.cfg_info = old_cfg_info; Some(result) } diff --git a/src/librustdoc/visit_ast.rs b/src/librustdoc/visit_ast.rs index cd28322f590..dc9889cec21 100644 --- a/src/librustdoc/visit_ast.rs +++ b/src/librustdoc/visit_ast.rs @@ -9,7 +9,7 @@ use rustc_hir::attrs::AttributeKind; use rustc_hir::def::{DefKind, MacroKinds, Res}; use rustc_hir::def_id::{DefId, DefIdMap, LocalDefId, LocalDefIdSet}; use rustc_hir::intravisit::{Visitor, walk_body, walk_item}; -use rustc_hir::{CRATE_HIR_ID, Node, find_attr}; +use rustc_hir::{Node, find_attr}; use rustc_middle::hir::nested_filter; use rustc_middle::ty::TyCtxt; use rustc_span::Span; @@ -17,7 +17,6 @@ use rustc_span::def_id::{CRATE_DEF_ID, LOCAL_CRATE}; use rustc_span::symbol::{Symbol, kw, sym}; use tracing::debug; -use crate::clean::cfg::Cfg; use crate::clean::utils::{inherits_doc_hidden, should_ignore_res}; use crate::clean::{NestedAttributesExt, hir_attr_lists, reexport_chain}; use crate::core; @@ -178,32 +177,6 @@ impl<'a, 'tcx> RustdocVisitor<'a, 'tcx> { } } - self.cx.cache.hidden_cfg = self - .cx - .tcx - .hir_attrs(CRATE_HIR_ID) - .iter() - .filter(|attr| attr.has_name(sym::doc)) - .flat_map(|attr| attr.meta_item_list().into_iter().flatten()) - .filter(|attr| attr.has_name(sym::cfg_hide)) - .flat_map(|attr| { - attr.meta_item_list() - .unwrap_or(&[]) - .iter() - .filter_map(|attr| { - Cfg::parse(attr) - .map_err(|e| self.cx.sess().dcx().span_err(e.span, e.msg)) - .ok() - }) - .collect::<Vec<_>>() - }) - .chain([ - Cfg::Cfg(sym::test, None), - Cfg::Cfg(sym::doc, None), - Cfg::Cfg(sym::doctest, None), - ]) - .collect(); - self.cx.cache.exact_paths = self.exact_paths; top_level_module } diff --git a/src/llvm-project b/src/llvm-project -Subproject 333793696b0a08002acac6af983adc7a5233fc5 +Subproject 8c30b9c5098bdff1d3d9a2d460ee091cd1171e6 diff --git a/src/stage0 b/src/stage0 index a705cd1c760..556ced41d3d 100644 --- a/src/stage0 +++ b/src/stage0 @@ -13,506 +13,528 @@ nightly_branch=master # All changes below this comment will be overridden the next time the # tool is executed. -compiler_date=2025-08-05 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+dist/2025-09-27/rustc-nightly-src.tar.gz=419d5aea9252c3a9377fcfefe0a0e91b7be1354b9c33e36e346c547c4a9ec3eb +dist/2025-09-27/rustc-nightly-src.tar.xz=fd454f13408f045e3ba1d4618699a3c6e42fcc66902c37972aa3729bb681d951 diff --git a/src/tools/bump-stage0/Cargo.toml b/src/tools/bump-stage0/Cargo.toml index 79097f2c189..943b8453ef8 100644 --- a/src/tools/bump-stage0/Cargo.toml +++ b/src/tools/bump-stage0/Cargo.toml @@ -9,6 +9,8 @@ edition = "2021" anyhow = "1.0.34" build_helper = { path = "../../build_helper" } curl = "0.4.38" +hex = "0.4.3" indexmap = { version = "2.0.0", features = ["serde"] } serde = { version = "1.0.125", features = ["derive"] } toml = "0.8.23" +sha2 = "0.10.1" diff --git a/src/tools/bump-stage0/src/main.rs b/src/tools/bump-stage0/src/main.rs index faed748785f..079e7b1ce71 100644 --- a/src/tools/bump-stage0/src/main.rs +++ b/src/tools/bump-stage0/src/main.rs @@ -4,6 +4,7 @@ use anyhow::{Context, Error}; use build_helper::stage0_parser::{Stage0Config, VersionMetadata, parse_stage0_file}; use curl::easy::Easy; use indexmap::IndexMap; +use sha2::{Digest, Sha256}; const PATH: &str = "src/stage0"; const COMPILER_COMPONENTS: &[&str] = &["rustc", "rust-std", "cargo", "clippy-preview"]; @@ -13,13 +14,14 @@ struct Tool { config: Stage0Config, channel: Channel, - date: Option<String>, + compiler_date: Option<String>, + rustfmt_date: Option<String>, version: [u16; 3], checksums: IndexMap<String, String>, } impl Tool { - fn new(date: Option<String>) -> Result<Self, Error> { + fn new(compiler_date: Option<String>, rustfmt_date: Option<String>) -> Result<Self, Error> { let channel = match std::fs::read_to_string("src/ci/channel")?.trim() { "stable" => Channel::Stable, "beta" => Channel::Beta, @@ -38,7 +40,14 @@ impl Tool { let existing = parse_stage0_file(); - Ok(Self { channel, version, date, config: existing.config, checksums: IndexMap::new() }) + Ok(Self { + channel, + version, + compiler_date, + rustfmt_date, + config: existing.config, + checksums: IndexMap::new(), + }) } fn update_stage0_file(mut self) -> Result<(), Error> { @@ -78,10 +87,21 @@ impl Tool { file_content.push_str("\n"); let compiler = self.detect_compiler()?; + file_content.push_str(&format!( + "compiler_channel_manifest_hash={}\n", + compiler.channel_manifest_hash + )); + file_content.push_str(&format!("compiler_git_commit_hash={}\n", compiler.git_commit_hash)); file_content.push_str(&format!("compiler_date={}\n", compiler.date)); file_content.push_str(&format!("compiler_version={}\n", compiler.version)); if let Some(rustfmt) = self.detect_rustfmt()? { + file_content.push_str(&format!( + "rustfmt_channel_manifest_hash={}\n", + rustfmt.channel_manifest_hash + )); + file_content + .push_str(&format!("rustfmt_git_commit_hash={}\n", rustfmt.git_commit_hash)); file_content.push_str(&format!("rustfmt_date={}\n", rustfmt.date)); file_content.push_str(&format!("rustfmt_version={}\n", rustfmt.version)); } @@ -112,9 +132,16 @@ impl Tool { Channel::Nightly => "beta".to_string(), }; - let manifest = fetch_manifest(&self.config, &channel, self.date.as_deref())?; + let (manifest, manifest_hash) = + fetch_manifest(&self.config, &channel, self.compiler_date.as_deref())?; self.collect_checksums(&manifest, COMPILER_COMPONENTS)?; Ok(VersionMetadata { + channel_manifest_hash: manifest_hash, + git_commit_hash: manifest.pkg["rust"] + .git_commit_hash + .as_ref() + .expect("invalid git_commit_hash") + .into(), date: manifest.date, version: if self.channel == Channel::Nightly { "beta".to_string() @@ -138,9 +165,19 @@ impl Tool { return Ok(None); } - let manifest = fetch_manifest(&self.config, "nightly", self.date.as_deref())?; + let (manifest, manifest_hash) = + fetch_manifest(&self.config, "nightly", self.rustfmt_date.as_deref())?; self.collect_checksums(&manifest, RUSTFMT_COMPONENTS)?; - Ok(Some(VersionMetadata { date: manifest.date, version: "nightly".into() })) + Ok(Some(VersionMetadata { + channel_manifest_hash: manifest_hash, + git_commit_hash: manifest.pkg["rust"] + .git_commit_hash + .as_ref() + .expect("invalid git_commit_hash") + .into(), + date: manifest.date, + version: "nightly".into(), + })) } fn collect_checksums(&mut self, manifest: &Manifest, components: &[&str]) -> Result<(), Error> { @@ -164,12 +201,29 @@ impl Tool { } } } + for artifact in manifest.artifacts.values() { + for targets in artifact.target.values() { + for target in targets { + let url = target + .url + .strip_prefix(&prefix) + .ok_or_else(|| { + anyhow::anyhow!( + "url doesn't start with dist server base: {}", + target.url + ) + })? + .to_string(); + self.checksums.insert(url, target.hash_sha256.clone()); + } + } + } Ok(()) } } fn main() -> Result<(), Error> { - let tool = Tool::new(std::env::args().nth(1))?; + let tool = Tool::new(std::env::args().nth(1), std::env::args().nth(2))?; tool.update_stage0_file()?; Ok(()) } @@ -178,18 +232,24 @@ fn fetch_manifest( config: &Stage0Config, channel: &str, date: Option<&str>, -) -> Result<Manifest, Error> { +) -> Result<(Manifest, String), Error> { let url = if let Some(date) = date { format!("{}/dist/{}/channel-rust-{}.toml", config.dist_server, date, channel) } else { format!("{}/dist/channel-rust-{}.toml", config.dist_server, channel) }; + let manifest_bytes = http_get(&url)?; + + let mut sha256 = Sha256::new(); + sha256.update(&manifest_bytes); + let manifest_hash = hex::encode(sha256.finalize()); + // FIXME: on newer `toml` (>= `0.9.*`), use `toml::from_slice`. For now, we use the most recent // `toml` available in-tree which is `0.8.*`, so we have to do an additional dance here. - let response = http_get(&url)?; - let response = String::from_utf8(response)?; - Ok(toml::from_str(&response)?) + let manifest_str = String::from_utf8(manifest_bytes)?; + let manifest = toml::from_str(&manifest_str)?; + Ok((manifest, manifest_hash)) } fn http_get(url: &str) -> Result<Vec<u8>, Error> { @@ -219,11 +279,14 @@ enum Channel { struct Manifest { date: String, pkg: IndexMap<String, ManifestPackage>, + artifacts: IndexMap<String, ManifestArtifact>, } #[derive(Debug, serde::Serialize, serde::Deserialize)] struct ManifestPackage { version: String, + #[serde(default)] + git_commit_hash: Option<String>, target: IndexMap<String, ManifestTargetPackage>, } @@ -234,3 +297,15 @@ struct ManifestTargetPackage { xz_url: Option<String>, xz_hash: Option<String>, } + +#[derive(Debug, serde::Serialize, serde::Deserialize)] +struct ManifestArtifact { + target: IndexMap<String, Vec<ManifestTargetArtifact>>, +} + +#[derive(Debug, serde::Serialize, serde::Deserialize)] +#[serde(rename_all = "kebab-case")] +struct ManifestTargetArtifact { + url: String, + hash_sha256: String, +} diff --git a/src/tools/cargo b/src/tools/cargo -Subproject 966f94733bbc94ca51ff9f1e4c49ad250ebbdc5 +Subproject f2932725b045d361ff5f18ba02b1409dd1f44e7 diff --git a/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs b/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs index d78da9396fa..7d14ba7fcf1 100644 --- a/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs +++ b/src/tools/clippy/clippy_lints/src/casts/cast_ptr_alignment.rs @@ -43,8 +43,8 @@ fn lint_cast_ptr_alignment<'tcx>(cx: &LateContext<'tcx>, expr: &Expr<'_>, cast_f expr.span, format!( "casting from `{cast_from}` to a more-strictly-aligned pointer (`{cast_to}`) ({} < {} bytes)", - from_layout.align.abi.bytes(), - to_layout.align.abi.bytes(), + from_layout.align.bytes(), + to_layout.align.bytes(), ), ); } diff --git a/src/tools/clippy/clippy_lints/src/casts/manual_dangling_ptr.rs b/src/tools/clippy/clippy_lints/src/casts/manual_dangling_ptr.rs index 92910cf8adf..ff5320719aa 100644 --- a/src/tools/clippy/clippy_lints/src/casts/manual_dangling_ptr.rs +++ b/src/tools/clippy/clippy_lints/src/casts/manual_dangling_ptr.rs @@ -72,7 +72,7 @@ fn is_literal_aligned(cx: &LateContext<'_>, lit: &Spanned<LitKind>, to: &Ty<'_>) cx.tcx .layout_of(cx.typing_env().as_query_input(to_mid_ty)) .is_ok_and(|layout| { - let align = u128::from(layout.align.abi.bytes()); + let align = u128::from(layout.align.bytes()); u128::from(val) <= align }) } diff --git a/src/tools/clippy/clippy_lints/src/lib.rs b/src/tools/clippy/clippy_lints/src/lib.rs index c56fa257b06..b0083b99f17 100644 --- a/src/tools/clippy/clippy_lints/src/lib.rs +++ b/src/tools/clippy/clippy_lints/src/lib.rs @@ -7,7 +7,6 @@ #![feature(iter_intersperse)] #![feature(iter_partition_in_place)] #![feature(never_type)] -#![cfg_attr(bootstrap, feature(round_char_boundary))] #![feature(rustc_private)] #![feature(stmt_expr_attributes)] #![feature(unwrap_infallible)] diff --git a/src/tools/clippy/tests/missing-test-files.rs b/src/tools/clippy/tests/missing-test-files.rs index 63f960c92fa..9fff3132498 100644 --- a/src/tools/clippy/tests/missing-test-files.rs +++ b/src/tools/clippy/tests/missing-test-files.rs @@ -1,6 +1,5 @@ #![warn(rust_2018_idioms, unused_lifetimes)] #![allow(clippy::assertions_on_constants)] -#![cfg_attr(bootstrap, feature(path_file_prefix))] use std::cmp::Ordering; use std::ffi::OsStr; diff --git a/src/tools/clippy/tests/ui/author/macro_in_closure.stdout b/src/tools/clippy/tests/ui/author/macro_in_closure.stdout index 49595e2fec2..786c61e0c01 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_closure.stdout +++ b/src/tools/clippy/tests/ui/author/macro_in_closure.stdout @@ -10,34 +10,42 @@ if let StmtKind::Let(local) = stmt.kind && paths::STD_IO_STDIO__PRINT.matches_path(cx, func) // Add the path to `clippy_utils::paths` if needed && args.len() == 1 && let ExprKind::Block(block1, None) = args[0].kind - && block1.stmts.len() == 1 + && block1.stmts.len() == 2 && let StmtKind::Let(local1) = block1.stmts[0].kind && let Some(init1) = local1.init - && let ExprKind::Array(elements) = init1.kind + && let ExprKind::Tup(elements) = init1.kind && elements.len() == 1 - && let ExprKind::Call(func1, args1) = elements[0].kind - && paths::CORE_FMT_RT_ARGUMENT_NEW_DISPLAY.matches_path(cx, func1) // Add the path to `clippy_utils::paths` if needed - && args1.len() == 1 - && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = args1[0].kind + && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = elements[0].kind && let PatKind::Binding(BindingMode::NONE, _, name, None) = local1.pat.kind && name.as_str() == "args" + && let StmtKind::Let(local2) = block1.stmts[1].kind + && let Some(init2) = local2.init + && let ExprKind::Array(elements1) = init2.kind + && elements1.len() == 1 + && let ExprKind::Call(func1, args1) = elements1[0].kind + && paths::CORE_FMT_RT_ARGUMENT_NEW_DISPLAY.matches_path(cx, func1) // Add the path to `clippy_utils::paths` if needed + && args1.len() == 1 + && let ExprKind::Field(object, field_name) = args1[0].kind + && field_name.as_str() == "0" + && let PatKind::Binding(BindingMode::NONE, _, name1, None) = local2.pat.kind + && name1.as_str() == "args" && let Some(trailing_expr) = block1.expr && let ExprKind::Call(func2, args2) = trailing_expr.kind && paths::CORE_FMT_RT_NEW_V1.matches_path(cx, func2) // Add the path to `clippy_utils::paths` if needed && args2.len() == 2 && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner1) = args2[0].kind - && let ExprKind::Array(elements1) = inner1.kind - && elements1.len() == 2 - && let ExprKind::Lit(ref lit) = elements1[0].kind + && let ExprKind::Array(elements2) = inner1.kind + && elements2.len() == 2 + && let ExprKind::Lit(ref lit) = elements2[0].kind && let LitKind::Str(s, _) = lit.node && s.as_str() == "" - && let ExprKind::Lit(ref lit1) = elements1[1].kind + && let ExprKind::Lit(ref lit1) = elements2[1].kind && let LitKind::Str(s1, _) = lit1.node && s1.as_str() == "\n" && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner2) = args2[1].kind && block.expr.is_none() - && let PatKind::Binding(BindingMode::NONE, _, name1, None) = local.pat.kind - && name1.as_str() == "print_text" + && let PatKind::Binding(BindingMode::NONE, _, name2, None) = local.pat.kind + && name2.as_str() == "print_text" { // report your lint here } diff --git a/src/tools/clippy/tests/ui/author/macro_in_loop.stdout b/src/tools/clippy/tests/ui/author/macro_in_loop.stdout index 4fc7b49464d..80717900b52 100644 --- a/src/tools/clippy/tests/ui/author/macro_in_loop.stdout +++ b/src/tools/clippy/tests/ui/author/macro_in_loop.stdout @@ -20,28 +20,36 @@ if let Some(higher::ForLoop { pat: pat, arg: arg, body: body, .. }) = higher::Fo && paths::STD_IO_STDIO__PRINT.matches_path(cx, func) // Add the path to `clippy_utils::paths` if needed && args.len() == 1 && let ExprKind::Block(block2, None) = args[0].kind - && block2.stmts.len() == 1 + && block2.stmts.len() == 2 && let StmtKind::Let(local) = block2.stmts[0].kind && let Some(init) = local.init - && let ExprKind::Array(elements) = init.kind + && let ExprKind::Tup(elements) = init.kind && elements.len() == 1 - && let ExprKind::Call(func1, args1) = elements[0].kind - && paths::CORE_FMT_RT_ARGUMENT_NEW_DISPLAY.matches_path(cx, func1) // Add the path to `clippy_utils::paths` if needed - && args1.len() == 1 - && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = args1[0].kind + && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner) = elements[0].kind && let PatKind::Binding(BindingMode::NONE, _, name1, None) = local.pat.kind && name1.as_str() == "args" + && let StmtKind::Let(local1) = block2.stmts[1].kind + && let Some(init1) = local1.init + && let ExprKind::Array(elements1) = init1.kind + && elements1.len() == 1 + && let ExprKind::Call(func1, args1) = elements1[0].kind + && paths::CORE_FMT_RT_ARGUMENT_NEW_DISPLAY.matches_path(cx, func1) // Add the path to `clippy_utils::paths` if needed + && args1.len() == 1 + && let ExprKind::Field(object, field_name) = args1[0].kind + && field_name.as_str() == "0" + && let PatKind::Binding(BindingMode::NONE, _, name2, None) = local1.pat.kind + && name2.as_str() == "args" && let Some(trailing_expr) = block2.expr && let ExprKind::Call(func2, args2) = trailing_expr.kind && paths::CORE_FMT_RT_NEW_V1.matches_path(cx, func2) // Add the path to `clippy_utils::paths` if needed && args2.len() == 2 && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner1) = args2[0].kind - && let ExprKind::Array(elements1) = inner1.kind - && elements1.len() == 2 - && let ExprKind::Lit(ref lit2) = elements1[0].kind + && let ExprKind::Array(elements2) = inner1.kind + && elements2.len() == 2 + && let ExprKind::Lit(ref lit2) = elements2[0].kind && let LitKind::Str(s, _) = lit2.node && s.as_str() == "" - && let ExprKind::Lit(ref lit3) = elements1[1].kind + && let ExprKind::Lit(ref lit3) = elements2[1].kind && let LitKind::Str(s1, _) = lit3.node && s1.as_str() == "\n" && let ExprKind::AddrOf(BorrowKind::Ref, Mutability::Not, inner2) = args2[1].kind diff --git a/src/tools/clippy/tests/ui/useless_attribute.fixed b/src/tools/clippy/tests/ui/useless_attribute.fixed index 15070dd9c2c..e0bc23e0788 100644 --- a/src/tools/clippy/tests/ui/useless_attribute.fixed +++ b/src/tools/clippy/tests/ui/useless_attribute.fixed @@ -153,7 +153,7 @@ pub mod redundant_imports_issue { () => {}; } - #[expect(redundant_imports)] + #[expect(unused_imports)] pub(crate) use empty; empty!(); diff --git a/src/tools/clippy/tests/ui/useless_attribute.rs b/src/tools/clippy/tests/ui/useless_attribute.rs index 3f530de7fd8..30a4c354b23 100644 --- a/src/tools/clippy/tests/ui/useless_attribute.rs +++ b/src/tools/clippy/tests/ui/useless_attribute.rs @@ -153,7 +153,7 @@ pub mod redundant_imports_issue { () => {}; } - #[expect(redundant_imports)] + #[expect(unused_imports)] pub(crate) use empty; empty!(); diff --git a/src/tools/compiletest/Cargo.toml b/src/tools/compiletest/Cargo.toml index cdada5a2230..6597c3c70f6 100644 --- a/src/tools/compiletest/Cargo.toml +++ b/src/tools/compiletest/Cargo.toml @@ -12,7 +12,7 @@ path = "src/bin/main.rs" [dependencies] # tidy-alphabetical-start -anstyle-svg = "0.1.3" +anstyle-svg = "0.1.11" build_helper = { path = "../../build_helper" } camino = "1" colored = "2" diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs index 6da102b1b5f..6d959948918 100644 --- a/src/tools/compiletest/src/common.rs +++ b/src/tools/compiletest/src/common.rs @@ -661,18 +661,10 @@ pub struct Config { pub builtin_cfg_names: OnceLock<HashSet<String>>, pub supported_crate_types: OnceLock<HashSet<String>>, - /// FIXME: this is why we still need to depend on *staged* `std`, it's because we currently rely - /// on `#![feature(internal_output_capture)]` for [`std::io::set_output_capture`] to implement - /// `libtest`-esque `--no-capture`. - /// /// FIXME: rename this to the more canonical `no_capture`, or better, invert this to `capture` /// to avoid `!nocapture` double-negatives. pub nocapture: bool, - /// True if the experimental new output-capture implementation should be - /// used, avoiding the need for `#![feature(internal_output_capture)]`. - pub new_output_capture: bool, - /// Needed both to construct [`build_helper::git::GitConfig`]. pub nightly_branch: String, pub git_merge_commit_email: String, @@ -790,7 +782,6 @@ impl Config { builtin_cfg_names: Default::default(), supported_crate_types: Default::default(), nocapture: Default::default(), - new_output_capture: Default::default(), nightly_branch: Default::default(), git_merge_commit_email: Default::default(), profiler_runtime: Default::default(), diff --git a/src/tools/compiletest/src/directives.rs b/src/tools/compiletest/src/directives.rs index 1277fd225eb..e84a2278766 100644 --- a/src/tools/compiletest/src/directives.rs +++ b/src/tools/compiletest/src/directives.rs @@ -201,6 +201,8 @@ pub struct TestProps { /// Build and use `minicore` as `core` stub for `no_core` tests in cross-compilation scenarios /// that don't otherwise want/need `-Z build-std`. pub add_core_stubs: bool, + /// Add these flags to the build of `minicore`. + pub core_stubs_compile_flags: Vec<String>, /// Whether line annotatins are required for the given error kind. pub dont_require_annotations: HashSet<ErrorKind>, /// Whether pretty printers should be disabled in gdb. @@ -253,6 +255,7 @@ mod directives { pub const FILECHECK_FLAGS: &'static str = "filecheck-flags"; pub const NO_AUTO_CHECK_CFG: &'static str = "no-auto-check-cfg"; pub const ADD_CORE_STUBS: &'static str = "add-core-stubs"; + pub const CORE_STUBS_COMPILE_FLAGS: &'static str = "core-stubs-compile-flags"; // This isn't a real directive, just one that is probably mistyped often pub const INCORRECT_COMPILER_FLAGS: &'static str = "compiler-flags"; pub const DISABLE_GDB_PRETTY_PRINTERS: &'static str = "disable-gdb-pretty-printers"; @@ -311,6 +314,7 @@ impl TestProps { no_auto_check_cfg: false, has_enzyme: false, add_core_stubs: false, + core_stubs_compile_flags: vec![], dont_require_annotations: Default::default(), disable_gdb_pretty_printers: false, compare_output_by_lines: false, @@ -653,6 +657,21 @@ impl TestProps { self.update_add_core_stubs(ln, config); + if let Some(flags) = config.parse_name_value_directive( + ln, + directives::CORE_STUBS_COMPILE_FLAGS, + testfile, + line_number, + ) { + let flags = split_flags(&flags); + for flag in &flags { + if flag == "--edition" || flag.starts_with("--edition=") { + panic!("you must use `//@ edition` to configure the edition"); + } + } + self.core_stubs_compile_flags.extend(flags); + } + if let Some(err_kind) = config.parse_name_value_directive( ln, DONT_REQUIRE_ANNOTATIONS, diff --git a/src/tools/compiletest/src/directives/directive_names.rs b/src/tools/compiletest/src/directives/directive_names.rs index 0ef84fb4594..4fef8992567 100644 --- a/src/tools/compiletest/src/directives/directive_names.rs +++ b/src/tools/compiletest/src/directives/directive_names.rs @@ -19,6 +19,7 @@ pub(crate) const KNOWN_DIRECTIVE_NAMES: &[&str] = &[ "check-test-line-numbers-match", "compare-output-by-lines", "compile-flags", + "core-stubs-compile-flags", "disable-gdb-pretty-printers", "doc-flags", "dont-check-compiler-stderr", diff --git a/src/tools/compiletest/src/executor.rs b/src/tools/compiletest/src/executor.rs index c8e13d44573..c7aca6d1c5a 100644 --- a/src/tools/compiletest/src/executor.rs +++ b/src/tools/compiletest/src/executor.rs @@ -9,8 +9,8 @@ use std::borrow::Cow; use std::collections::HashMap; use std::hash::{BuildHasherDefault, DefaultHasher}; use std::num::NonZero; -use std::sync::{Arc, Mutex, mpsc}; -use std::{env, hint, io, mem, panic, thread}; +use std::sync::{Arc, mpsc}; +use std::{env, hint, mem, panic, thread}; use camino::Utf8PathBuf; @@ -130,10 +130,6 @@ fn run_test_inner( panic_hook::set_capture_buf(Default::default()); } - if let CaptureKind::Old { ref buf } = capture { - io::set_output_capture(Some(Arc::clone(buf))); - } - let stdout = capture.stdout(); let stderr = capture.stderr(); @@ -144,9 +140,6 @@ fn run_test_inner( // Forward any captured panic message to (captured) stderr. write!(stderr, "{panic_buf}"); } - if matches!(capture, CaptureKind::Old { .. }) { - io::set_output_capture(None); - } let outcome = match (should_panic, panic_payload) { (ShouldPanic::No, None) | (ShouldPanic::Yes, Some(_)) => TestOutcome::Succeeded, @@ -167,31 +160,24 @@ enum CaptureKind { /// runners, whose output is always captured.) None, - /// Use the old output-capture implementation, which relies on the unstable - /// library feature `#![feature(internal_output_capture)]`. - Old { buf: Arc<Mutex<Vec<u8>>> }, - - /// Use the new output-capture implementation, which only uses stable Rust. - New { buf: output_capture::CaptureBuf }, + /// Capture all console output that would be printed by test runners via + /// their `stdout` and `stderr` trait objects, or via the custom panic hook. + Capture { buf: output_capture::CaptureBuf }, } impl CaptureKind { fn for_config(config: &Config) -> Self { if config.nocapture { Self::None - } else if config.new_output_capture { - Self::New { buf: output_capture::CaptureBuf::new() } } else { - // Create a capure buffer for `io::set_output_capture`. - Self::Old { buf: Default::default() } + Self::Capture { buf: output_capture::CaptureBuf::new() } } } fn should_set_panic_hook(&self) -> bool { match self { Self::None => false, - Self::Old { .. } => true, - Self::New { .. } => true, + Self::Capture { .. } => true, } } @@ -205,16 +191,15 @@ impl CaptureKind { fn capture_buf_or<'a>(&'a self, fallback: &'a dyn ConsoleOut) -> &'a dyn ConsoleOut { match self { - Self::None | Self::Old { .. } => fallback, - Self::New { buf } => buf, + Self::None => fallback, + Self::Capture { buf } => buf, } } fn into_inner(self) -> Option<Vec<u8>> { match self { Self::None => None, - Self::Old { buf } => Some(buf.lock().unwrap_or_else(|e| e.into_inner()).to_vec()), - Self::New { buf } => Some(buf.into_inner().into()), + Self::Capture { buf } => Some(buf.into_inner().into()), } } } diff --git a/src/tools/compiletest/src/lib.rs b/src/tools/compiletest/src/lib.rs index ce2a3d4b5fb..15e31dadf97 100644 --- a/src/tools/compiletest/src/lib.rs +++ b/src/tools/compiletest/src/lib.rs @@ -1,9 +1,4 @@ #![crate_name = "compiletest"] -// Needed by the "new" test executor that does not depend on libtest. -// FIXME(Zalathar): We should be able to get rid of `internal_output_capture`, -// by having `runtest` manually capture all of its println-like output instead. -// That would result in compiletest being written entirely in stable Rust! -#![feature(internal_output_capture)] #[cfg(test)] mod tests; @@ -178,12 +173,6 @@ pub fn parse_config(args: Vec<String>) -> Config { // FIXME: Temporarily retained so we can point users to `--no-capture` .optflag("", "nocapture", "") .optflag("", "no-capture", "don't capture stdout/stderr of tests") - .optopt( - "N", - "new-output-capture", - "enables or disables the new output-capture implementation", - "off|on", - ) .optflag("", "profiler-runtime", "is the profiler runtime enabled for this target") .optflag("h", "help", "show this message") .reqopt("", "channel", "current Rust channel", "CHANNEL") @@ -480,14 +469,6 @@ pub fn parse_config(args: Vec<String>) -> Config { supported_crate_types: OnceLock::new(), nocapture: matches.opt_present("no-capture"), - new_output_capture: { - let value = matches - .opt_str("new-output-capture") - .or_else(|| env::var("COMPILETEST_NEW_OUTPUT_CAPTURE").ok()) - .unwrap_or_else(|| "on".to_owned()); - parse_bool_option(&value) - .unwrap_or_else(|| panic!("unknown `--new-output-capture` value `{value}` given")) - }, nightly_branch: matches.opt_str("nightly-branch").unwrap(), git_merge_commit_email: matches.opt_str("git-merge-commit-email").unwrap(), @@ -503,19 +484,6 @@ pub fn parse_config(args: Vec<String>) -> Config { } } -/// Parses the same set of boolean values accepted by rustc command-line arguments. -/// -/// Accepting all of these values is more complicated than just picking one -/// pair, but has the advantage that contributors who are used to rustc -/// shouldn't have to think about which values are legal. -fn parse_bool_option(value: &str) -> Option<bool> { - match value { - "off" | "no" | "n" | "false" => Some(false), - "on" | "yes" | "y" | "true" => Some(true), - _ => None, - } -} - pub fn opt_str(maybestr: &Option<String>) -> &str { match *maybestr { None => "(none)", diff --git a/src/tools/compiletest/src/panic_hook.rs b/src/tools/compiletest/src/panic_hook.rs index 1661ca6dabe..4f1e2547518 100644 --- a/src/tools/compiletest/src/panic_hook.rs +++ b/src/tools/compiletest/src/panic_hook.rs @@ -42,7 +42,7 @@ fn custom_panic_hook(default_hook: &PanicHook, info: &panic::PanicHookInfo<'_>) let thread = thread::current().name().unwrap_or("(test runner)").to_owned(); let location = get_location(info); - let payload = payload_as_str(info).unwrap_or("Box<dyn Any>"); + let payload = info.payload_as_str().unwrap_or("Box<dyn Any>"); let backtrace = Backtrace::capture(); writeln!(out, "\nthread '{thread}' panicked at {location}:\n{payload}").unwrap(); @@ -72,19 +72,6 @@ fn get_location<'a>(info: &'a PanicHookInfo<'_>) -> &'a dyn Display { } } -/// FIXME(Zalathar): Replace with `PanicHookInfo::payload_as_str` when that's -/// stable in beta. -fn payload_as_str<'a>(info: &'a PanicHookInfo<'_>) -> Option<&'a str> { - let payload = info.payload(); - if let Some(s) = payload.downcast_ref::<&str>() { - Some(s) - } else if let Some(s) = payload.downcast_ref::<String>() { - Some(s) - } else { - None - } -} - fn rust_backtrace_full() -> bool { static RUST_BACKTRACE_FULL: LazyLock<bool> = LazyLock::new(|| matches!(env::var("RUST_BACKTRACE").as_deref(), Ok("full"))); diff --git a/src/tools/compiletest/src/runtest.rs b/src/tools/compiletest/src/runtest.rs index 89fb8eb4357..bd32bec383f 100644 --- a/src/tools/compiletest/src/runtest.rs +++ b/src/tools/compiletest/src/runtest.rs @@ -1322,6 +1322,7 @@ impl<'test> TestCx<'test> { rustc.args(&["--crate-type", "rlib"]); rustc.arg("-Cpanic=abort"); + rustc.args(self.props.core_stubs_compile_flags.clone()); let res = self.compose_and_run(rustc, self.config.compile_lib_path.as_path(), None, None); if !res.status.success() { @@ -1432,6 +1433,12 @@ impl<'test> TestCx<'test> { aux_rustc.arg("-L").arg(&aux_dir); + if aux_props.add_core_stubs { + let minicore_path = self.build_minicore(); + aux_rustc.arg("--extern"); + aux_rustc.arg(&format!("minicore={}", minicore_path)); + } + let auxres = aux_cx.compose_and_run( aux_rustc, aux_cx.config.compile_lib_path.as_path(), @@ -1858,14 +1865,13 @@ impl<'test> TestCx<'test> { } } - rustc.args(&self.props.compile_flags); - // FIXME(jieyouxu): we should report a fatal error or warning if user wrote `-Cpanic=` with - // something that's not `abort` and `-Cforce-unwind-tables` with a value that is not `yes`, - // however, by moving this last we should override previous `-Cpanic`s and - // `-Cforce-unwind-tables`s. Note that checking here is very fragile, because we'd have to - // account for all possible compile flag splittings (they have some... intricacies and are - // not yet normalized). + // something that's not `abort` and `-Cforce-unwind-tables` with a value that is not `yes`. + // + // We could apply these last and override any provided flags. That would ensure that the + // build works, but some tests want to exercise that mixing panic modes in specific ways is + // rejected. So we enable aborting panics and unwind tables before adding flags, just to + // change the default. // // `minicore` requires `#![no_std]` and `#![no_core]`, which means no unwinding panics. if self.props.add_core_stubs { @@ -1873,6 +1879,8 @@ impl<'test> TestCx<'test> { rustc.arg("-Cforce-unwind-tables=yes"); } + rustc.args(&self.props.compile_flags); + rustc } @@ -2655,7 +2663,7 @@ impl<'test> TestCx<'test> { // The alloc-id appears in pretty-printed allocations. normalized = static_regex!( - r"╾─*a(lloc)?([0-9]+)(\+0x[0-9]+)?(<imm>)?( \([0-9]+ ptr bytes\))?─*╼" + r"╾─*a(lloc)?([0-9]+)(\+0x[0-9a-f]+)?(<imm>)?( \([0-9]+ ptr bytes\))?─*╼" ) .replace_all(&normalized, |caps: &Captures<'_>| { // Renumber the captured index. diff --git a/src/tools/miri/.github/workflows/ci.yml b/src/tools/miri/.github/workflows/ci.yml index e1a948c92fa..740118bb4a0 100644 --- a/src/tools/miri/.github/workflows/ci.yml +++ b/src/tools/miri/.github/workflows/ci.yml @@ -117,6 +117,41 @@ jobs: - name: rustdoc run: RUSTDOCFLAGS="-Dwarnings" ./miri doc --document-private-items + bootstrap: + name: bootstrap build + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + # Deliberately skipping `./.github/workflows/setup` as we do our own setup + - name: Add cache for cargo + id: cache + uses: actions/cache@v4 + with: + path: | + # Taken from <https://doc.rust-lang.org/nightly/cargo/guide/cargo-home.html#caching-the-cargo-home-in-ci>. + # Cache package/registry information + ~/.cargo/registry/index + ~/.cargo/registry/cache + ~/.cargo/git/db + # Cache bootstrap downloads + ../rust/build/cache + key: cargo-bootstrap-${{ hashFiles('rust-version') }} + restore-keys: cargo-bootstrap + - name: prepare build environment + run: | + MIRIDIR=$(pwd) + cd .. + # Bootstrap needs at least depth 2 to function. + git clone https://github.com/rust-lang/rust/ rust --depth 2 --revision $(cat "$MIRIDIR/rust-version") + cd rust + # Replace the in-tree Miri with the current version. + rm src/tools/miri -rf + ln -s "$MIRIDIR" src/tools/miri + - name: check build + run: | + cd ../rust # ./x does not seem to like being invoked from elsewhere + ./x check miri + coverage: name: coverage report runs-on: ubuntu-latest @@ -130,7 +165,7 @@ jobs: # ALL THE PREVIOUS JOBS NEED TO BE ADDED TO THE `needs` SECTION OF THIS JOB! # And they should be added below in `cron-fail-notify` as well. conclusion: - needs: [test, style, coverage] + needs: [test, style, bootstrap, coverage] # We need to ensure this job does *not* get skipped if its dependencies fail, # because a skipped job is considered a success by GitHub. So we have to # overwrite `if:`. We use `!cancelled()` to ensure the job does still not get run @@ -211,7 +246,7 @@ jobs: cron-fail-notify: name: cronjob failure notification runs-on: ubuntu-latest - needs: [test, style, coverage] + needs: [test, style, bootstrap, coverage] if: ${{ github.event_name == 'schedule' && failure() }} steps: # Send a Zulip notification diff --git a/src/tools/miri/miri-script/src/commands.rs b/src/tools/miri/miri-script/src/commands.rs index ee09b9b4b73..f1b52293123 100644 --- a/src/tools/miri/miri-script/src/commands.rs +++ b/src/tools/miri/miri-script/src/commands.rs @@ -130,15 +130,15 @@ impl Command { let new_commit = sh.read_file("rust-version")?.trim().to_owned(); let current_commit = { let rustc_info = cmd!(sh, "rustc +miri --version -v").read(); - if rustc_info.is_err() { - None - } else { - let metadata = rustc_version::version_meta_for(&rustc_info.unwrap())?; + if let Ok(rustc_info) = rustc_info { + let metadata = rustc_version::version_meta_for(&rustc_info)?; Some( metadata .commit_hash .ok_or_else(|| anyhow!("rustc metadata did not contain commit hash"))?, ) + } else { + None } }; // Check if we already are at that commit. diff --git a/src/tools/miri/rust-version b/src/tools/miri/rust-version index 0eb16a943d6..388e88fe43e 100644 --- a/src/tools/miri/rust-version +++ b/src/tools/miri/rust-version @@ -1 +1 @@ -3f1552a273e43e15f6ed240d00e1efdd6a53e65e +f6092f224d2b1774b31033f12d0bee626943b02f diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/diagnostics.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/diagnostics.rs index 7b4c533cfae..00f921b0f8a 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/diagnostics.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/diagnostics.rs @@ -244,8 +244,8 @@ pub(super) enum TransitionError { ChildAccessForbidden(Permission), /// A protector was triggered due to an invalid transition that loses /// too much permissions. - /// For example, if a protected tag goes from `Active` to `Disabled` due - /// to a foreign write this will produce a `ProtectedDisabled(Active)`. + /// For example, if a protected tag goes from `Unique` to `Disabled` due + /// to a foreign write this will produce a `ProtectedDisabled(Unique)`. /// This kind of error can only occur on foreign accesses. ProtectedDisabled(Permission), /// Cannot deallocate because some tag in the allocation is strongly protected. @@ -504,7 +504,7 @@ impl DisplayFmt { if let Some(perm) = perm { format!( "{ac}{st}", - ac = if perm.is_accessed() { self.accessed.yes } else { self.accessed.no }, + ac = if perm.accessed() { self.accessed.yes } else { self.accessed.no }, st = perm.permission().short_name(), ) } else { diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/foreign_access_skipping.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/foreign_access_skipping.rs index 928b3e6baef..90df05d36d9 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/foreign_access_skipping.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/foreign_access_skipping.rs @@ -24,7 +24,7 @@ use super::tree::AccessRelatedness; /// "manually" reset the parent's SIFA to be at least as strong as the new child's. This is accomplished with the `ensure_no_stronger_than` method. /// /// Note that we derive Ord and PartialOrd, so the order in which variants are listed below matters: -/// None < Read < Write. Do not change that order. See the `test_order` test. +/// None < Read < Write (weaker to stronger). Do not change that order. See the `test_order` test. #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug, Default)] pub enum IdempotentForeignAccess { #[default] diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/mod.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/mod.rs index bed65440dc9..6e5b5c807aa 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/mod.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/mod.rs @@ -294,24 +294,6 @@ trait EvalContextPrivExt<'tcx>: crate::MiriInterpCxExt<'tcx> { return interp_ok(Some(Provenance::Concrete { alloc_id, tag: new_tag })); } - let span = this.machine.current_span(); - - // When adding a new node, the SIFA of its parents needs to be updated, potentially across - // the entire memory range. For the parts that are being accessed below, the access itself - // trivially takes care of that. However, we have to do some more work to also deal with the - // parts that are not being accessed. Specifically what we do is that we call - // `update_last_accessed_after_retag` on the SIFA of the permission set for the part of - // memory outside `perm_map` -- so that part is definitely taken care of. The remaining - // concern is the part of memory that is in the range of `perms_map`, but not accessed - // below. There we have two cases: - // * If the type is `!Freeze`, then the non-accessed part uses `nonfreeze_perm`, so the - // `nonfreeze_perm` initialized parts are also fine. We enforce the `freeze_perm` parts to - // be accessed via the assert below, and thus everything is taken care of. - // * If the type is `Freeze`, then `freeze_perm` is used everywhere (both inside and outside - // the initial range), and we update everything to have the `freeze_perm`'s SIFA, so there - // are no issues. (And this assert below is not actually needed in this case). - assert!(new_perm.freeze_access); - let protected = new_perm.protector.is_some(); let precise_interior_mut = this .machine @@ -337,7 +319,7 @@ trait EvalContextPrivExt<'tcx>: crate::MiriInterpCxExt<'tcx> { LocationState::new_non_accessed(perm, sifa) } }; - let perms_map = if !precise_interior_mut { + let inside_perms = if !precise_interior_mut { // For `!Freeze` types, just pretend the entire thing is an `UnsafeCell`. let ty_is_freeze = place.layout.ty.is_freeze(*this.tcx, this.typing_env()); let state = loc_state(ty_is_freeze); @@ -364,8 +346,8 @@ trait EvalContextPrivExt<'tcx>: crate::MiriInterpCxExt<'tcx> { let alloc_extra = this.get_alloc_extra(alloc_id)?; let mut tree_borrows = alloc_extra.borrow_tracker_tb().borrow_mut(); - for (perm_range, perm) in perms_map.iter_all() { - if perm.is_accessed() { + for (perm_range, perm) in inside_perms.iter_all() { + if perm.accessed() { // Some reborrows incur a read access to the parent. // Adjust range to be relative to allocation start (rather than to `place`). let range_in_alloc = AllocRange { @@ -401,10 +383,10 @@ trait EvalContextPrivExt<'tcx>: crate::MiriInterpCxExt<'tcx> { base_offset, orig_tag, new_tag, - perms_map, + inside_perms, new_perm.outside_perm, protected, - span, + this.machine.current_span(), )?; drop(tree_borrows); diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/perms.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/perms.rs index 390435e58d1..e21775c9f23 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/perms.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/perms.rs @@ -14,7 +14,7 @@ enum PermissionPriv { Cell, /// represents: a local mutable reference that has not yet been written to; /// allows: child reads, foreign reads; - /// affected by: child writes (becomes Active), + /// affected by: child writes (becomes Unique), /// rejects: foreign writes (Disabled). /// /// `ReservedFrz` is mostly for types that are `Freeze` (no interior mutability). @@ -31,17 +31,17 @@ enum PermissionPriv { /// This is so that the behavior of `Reserved` adheres to the rules of `noalias`: /// - foreign-read then child-write is UB due to `conflicted`, /// - child-write then foreign-read is UB since child-write will activate and then - /// foreign-read disables a protected `Active`, which is UB. + /// foreign-read disables a protected `Unique`, which is UB. ReservedFrz { conflicted: bool }, /// Alternative version of `ReservedFrz` made for types with interior mutability. /// allows: child reads, foreign reads, foreign writes (extra); - /// affected by: child writes (becomes Active); + /// affected by: child writes (becomes Unique); /// rejects: nothing. ReservedIM, /// represents: a unique pointer; /// allows: child reads, child writes; /// rejects: foreign reads (Frozen), foreign writes (Disabled). - Active, + Unique, /// represents: a shared pointer; /// allows: all read accesses; /// rejects child writes (UB), foreign writes (Disabled). @@ -56,7 +56,7 @@ use super::foreign_access_skipping::IdempotentForeignAccess; impl PartialOrd for PermissionPriv { /// PermissionPriv is ordered by the reflexive transitive closure of - /// `Reserved(conflicted=false) < Reserved(conflicted=true) < Active < Frozen < Disabled`. + /// `Reserved(conflicted=false) < Reserved(conflicted=true) < Unique < Frozen < Disabled`. /// `Reserved` that have incompatible `ty_is_freeze` are incomparable to each other. /// This ordering matches the reachability by transitions, as asserted by the exhaustive test /// `permissionpriv_partialord_is_reachability`. @@ -76,8 +76,8 @@ impl PartialOrd for PermissionPriv { (_, Disabled) => Less, (Frozen, _) => Greater, (_, Frozen) => Less, - (Active, _) => Greater, - (_, Active) => Less, + (Unique, _) => Greater, + (_, Unique) => Less, (ReservedIM, ReservedIM) => Equal, (ReservedFrz { conflicted: c1 }, ReservedFrz { conflicted: c2 }) => { // `bool` is ordered such that `false <= true`, so this works as intended. @@ -115,8 +115,8 @@ impl PermissionPriv { // Famously, ReservedIM survives foreign writes. It is never protected. ReservedIM if prot => unreachable!("Protected ReservedIM should not exist!"), ReservedIM => IdempotentForeignAccess::Write, - // Active changes on any foreign access (becomes Frozen/Disabled). - Active => IdempotentForeignAccess::None, + // Unique changes on any foreign access (becomes Frozen/Disabled). + Unique => IdempotentForeignAccess::None, // Frozen survives foreign reads, but not writes. Frozen => IdempotentForeignAccess::Read, // Disabled survives foreign reads and writes. It survives them @@ -139,12 +139,12 @@ mod transition { Disabled => return None, // The inner data `ty_is_freeze` of `Reserved` is always irrelevant for Read // accesses, since the data is not being mutated. Hence the `{ .. }`. - readable @ (Cell | ReservedFrz { .. } | ReservedIM | Active | Frozen) => readable, + readable @ (Cell | ReservedFrz { .. } | ReservedIM | Unique | Frozen) => readable, }) } /// A non-child node was read-accessed: keep `Reserved` but mark it as `conflicted` if it - /// is protected; invalidate `Active`. + /// is protected; invalidate `Unique`. fn foreign_read(state: PermissionPriv, protected: bool) -> Option<PermissionPriv> { Some(match state { // Cell ignores foreign reads. @@ -167,10 +167,10 @@ mod transition { assert!(!protected); res } - Active => + Unique => if protected { // We wrote, someone else reads -- that's bad. - // (Since Active is always initialized, this move-to-protected will mean insta-UB.) + // (Since Unique is always initialized, this move-to-protected will mean insta-UB.) Disabled } else { // We don't want to disable here to allow read-read reordering: it is crucial @@ -180,7 +180,7 @@ mod transition { }) } - /// A child node was write-accessed: `Reserved` must become `Active` to obtain + /// A child node was write-accessed: `Reserved` must become `Unique` to obtain /// write permissions, `Frozen` and `Disabled` cannot obtain such permissions and produce UB. fn child_write(state: PermissionPriv, protected: bool) -> Option<PermissionPriv> { Some(match state { @@ -192,7 +192,7 @@ mod transition { ReservedFrz { conflicted: true } if protected => return None, // A write always activates the 2-phase borrow, even with interior // mutability - ReservedFrz { .. } | ReservedIM | Active => Active, + ReservedFrz { .. } | ReservedIM | Unique => Unique, Frozen | Disabled => return None, }) } @@ -266,8 +266,8 @@ impl Permission { /// Default initial permission of the root of a new tree at inbounds positions. /// Must *only* be used for the root, this is not in general an "initial" permission! - pub fn new_active() -> Self { - Self { inner: Active } + pub fn new_unique() -> Self { + Self { inner: Unique } } /// Default initial permission of a reborrowed mutable reference that is either @@ -309,7 +309,7 @@ impl Permission { // Do not do perform access if it is a `Cell`, as this // can cause data races when using thread-safe data types. Cell => None, - Active => Some(AccessKind::Write), + Unique => Some(AccessKind::Write), _ => Some(AccessKind::Read), } } @@ -344,7 +344,7 @@ impl Permission { (_, Cell) => false, // ReservedIM can be replaced by anything besides Cell. // ReservedIM allows all transitions, but unlike Cell, a local write - // to ReservedIM transitions to Active, while it is a no-op for Cell. + // to ReservedIM transitions to Unique, while it is a no-op for Cell. (ReservedIM, _) => true, (_, ReservedIM) => false, // Reserved (as parent, where conflictedness does not matter) @@ -352,12 +352,12 @@ impl Permission { // since ReservedIM and Cell alone would survive foreign writes (ReservedFrz { .. }, _) => true, (_, ReservedFrz { .. }) => false, - // Active can not be replaced by something surviving + // Unique can not be replaced by something surviving // foreign reads and then remaining writable (i.e., Reserved*). // Replacing a state by itself is always okay, even if the child state is protected. - // Active can be replaced by Frozen, since it is not protected. - (Active, Active | Frozen | Disabled) => true, - (_, Active) => false, + // Unique can be replaced by Frozen, since it is not protected. + (Unique, Unique | Frozen | Disabled) => true, + (_, Unique) => false, // Frozen can only be replaced by Disabled (and itself). (Frozen, Frozen | Disabled) => true, (_, Frozen) => false, @@ -410,7 +410,7 @@ pub mod diagnostics { ReservedFrz { conflicted: false } => "Reserved", ReservedFrz { conflicted: true } => "Reserved (conflicted)", ReservedIM => "Reserved (interior mutable)", - Active => "Active", + Unique => "Unique", Frozen => "Frozen", Disabled => "Disabled", } @@ -441,7 +441,7 @@ pub mod diagnostics { ReservedFrz { conflicted: false } => "Res ", ReservedFrz { conflicted: true } => "ResC", ReservedIM => "ReIM", - Active => "Act ", + Unique => "Act ", Frozen => "Frz ", Disabled => "Dis ", } @@ -455,7 +455,7 @@ pub mod diagnostics { assert!(self.is_possible()); assert!(!self.is_noop()); match (self.from, self.to) { - (_, Active) => "the first write to a 2-phase borrowed mutable reference", + (_, Unique) => "the first write to a 2-phase borrowed mutable reference", (_, Frozen) => "a loss of write permissions", (ReservedFrz { conflicted: false }, ReservedFrz { conflicted: true }) => "a temporary loss of write permissions until function exit", @@ -472,8 +472,8 @@ pub mod diagnostics { /// /// Irrelevant events: /// - modifications of write permissions when the error is related to read permissions - /// (on failed reads and protected `Frozen -> Disabled`, ignore `Reserved -> Active`, - /// `Reserved(conflicted=false) -> Reserved(conflicted=true)`, and `Active -> Frozen`) + /// (on failed reads and protected `Frozen -> Disabled`, ignore `Reserved -> Unique`, + /// `Reserved(conflicted=false) -> Reserved(conflicted=true)`, and `Unique -> Frozen`) /// - all transitions for attempts to deallocate strongly protected tags /// /// # Panics @@ -481,10 +481,10 @@ pub mod diagnostics { /// This function assumes that its arguments apply to the same location /// and that they were obtained during a normal execution. It will panic otherwise. /// - all transitions involved in `self` and `err` should be increasing - /// (Reserved < Active < Frozen < Disabled); + /// (Reserved < Unique < Frozen < Disabled); /// - between `self` and `err` the permission should also be increasing, /// so all permissions inside `err` should be greater than `self.1`; - /// - `Active`, `Reserved(conflicted=false)`, and `Cell` cannot cause an error + /// - `Unique`, `Reserved(conflicted=false)`, and `Cell` cannot cause an error /// due to insufficient permissions, so `err` cannot be a `ChildAccessForbidden(_)` /// of either of them; /// - `err` should not be `ProtectedDisabled(Disabled)`, because the protected @@ -500,11 +500,11 @@ pub mod diagnostics { TransitionError::ChildAccessForbidden(insufficient) => { // Show where the permission was gained then lost, // but ignore unrelated permissions. - // This eliminates transitions like `Active -> Frozen` + // This eliminates transitions like `Unique -> Frozen` // when the error is a failed `Read`. match (self.to, insufficient.inner) { (Frozen, Frozen) => true, - (Active, Frozen) => true, + (Unique, Frozen) => true, (Disabled, Disabled) => true, ( ReservedFrz { conflicted: true, .. }, @@ -512,14 +512,14 @@ pub mod diagnostics { ) => true, // A pointer being `Disabled` is a strictly stronger source of // errors than it being `Frozen`. If we try to access a `Disabled`, - // then where it became `Frozen` (or `Active` or `Reserved`) is the least + // then where it became `Frozen` (or `Unique` or `Reserved`) is the least // of our concerns for now. - (ReservedFrz { conflicted: true } | Active | Frozen, Disabled) => false, + (ReservedFrz { conflicted: true } | Unique | Frozen, Disabled) => false, (ReservedFrz { conflicted: true }, Frozen) => false, - // `Active`, `Reserved`, and `Cell` have all permissions, so a - // `ChildAccessForbidden(Reserved | Active)` can never exist. - (_, Active) | (_, ReservedFrz { conflicted: false }) | (_, Cell) => + // `Unique`, `Reserved`, and `Cell` have all permissions, so a + // `ChildAccessForbidden(Reserved | Unique)` can never exist. + (_, Unique) | (_, ReservedFrz { conflicted: false }) | (_, Cell) => unreachable!("this permission cannot cause an error"), // No transition has `Reserved { conflicted: false }` or `ReservedIM` // as its `.to` unless it's a noop. `Cell` cannot be in its `.to` @@ -527,11 +527,11 @@ pub mod diagnostics { (ReservedFrz { conflicted: false } | ReservedIM | Cell, _) => unreachable!("self is a noop transition"), // All transitions produced in normal executions (using `apply_access`) - // change permissions in the order `Reserved -> Active -> Frozen -> Disabled`. + // change permissions in the order `Reserved -> Unique -> Frozen -> Disabled`. // We assume that the error was triggered on the same location that // the transition `self` applies to, so permissions found must be increasing // in the order `self.from < self.to <= insufficient.inner` - (Active | Frozen | Disabled, ReservedFrz { .. } | ReservedIM) + (Unique | Frozen | Disabled, ReservedFrz { .. } | ReservedIM) | (Disabled, Frozen) | (ReservedFrz { .. }, ReservedIM) => unreachable!("permissions between self and err must be increasing"), @@ -540,29 +540,29 @@ pub mod diagnostics { TransitionError::ProtectedDisabled(before_disabled) => { // Show how we got to the starting point of the forbidden transition, // but ignore what came before. - // This eliminates transitions like `Reserved -> Active` + // This eliminates transitions like `Reserved -> Unique` // when the error is a `Frozen -> Disabled`. match (self.to, before_disabled.inner) { // We absolutely want to know where it was activated/frozen/marked // conflicted. - (Active, Active) => true, + (Unique, Unique) => true, (Frozen, Frozen) => true, ( ReservedFrz { conflicted: true, .. }, ReservedFrz { conflicted: true, .. }, ) => true, // If the error is a transition `Frozen -> Disabled`, then we don't really - // care whether before that was `Reserved -> Active -> Frozen` or + // care whether before that was `Reserved -> Unique -> Frozen` or // `Frozen` directly. // The error will only show either // - created as Reserved { conflicted: false }, // then Reserved { .. } -> Disabled is forbidden // - created as Reserved { conflicted: false }, - // then Active -> Disabled is forbidden + // then Unique -> Disabled is forbidden // A potential `Reserved { conflicted: false } // -> Reserved { conflicted: true }` is inexistant or irrelevant, - // and so is the `Reserved { conflicted: false } -> Active` - (Active, Frozen) => false, + // and so is the `Reserved { conflicted: false } -> Unique` + (Unique, Frozen) => false, (ReservedFrz { conflicted: true }, _) => false, (_, Disabled) => @@ -575,12 +575,12 @@ pub mod diagnostics { (ReservedFrz { conflicted: false } | ReservedIM | Cell, _) => unreachable!("self is a noop transition"), - // Permissions only evolve in the order `Reserved -> Active -> Frozen -> Disabled`, + // Permissions only evolve in the order `Reserved -> Unique -> Frozen -> Disabled`, // so permissions found must be increasing in the order // `self.from < self.to <= forbidden.from < forbidden.to`. - (Disabled, Cell | ReservedFrz { .. } | ReservedIM | Active | Frozen) - | (Frozen, Cell | ReservedFrz { .. } | ReservedIM | Active) - | (Active, Cell | ReservedFrz { .. } | ReservedIM) => + (Disabled, Cell | ReservedFrz { .. } | ReservedIM | Unique | Frozen) + | (Frozen, Cell | ReservedFrz { .. } | ReservedIM | Unique) + | (Unique, Cell | ReservedFrz { .. } | ReservedIM) => unreachable!("permissions between self and err must be increasing"), } } @@ -617,7 +617,7 @@ mod propagation_optimization_checks { impl Exhaustive for PermissionPriv { fn exhaustive() -> Box<dyn Iterator<Item = Self>> { Box::new( - vec![Active, Frozen, Disabled, ReservedIM, Cell] + vec![Unique, Frozen, Disabled, ReservedIM, Cell] .into_iter() .chain(<bool>::exhaustive().map(|conflicted| ReservedFrz { conflicted })), ) @@ -730,7 +730,7 @@ mod propagation_optimization_checks { #[test] // Check that all transitions are consistent with the order on PermissionPriv, - // i.e. Reserved -> Active -> Frozen -> Disabled + // i.e. Reserved -> Unique -> Frozen -> Disabled fn permissionpriv_partialord_is_reachability() { let reach = { let mut reach = rustc_data_structures::fx::FxHashSet::default(); diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/tree.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/tree.rs index 22bd63bd6b6..c4345c63289 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/tree.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/tree.rs @@ -11,7 +11,7 @@ //! - idempotency properties asserted in `perms.rs` (for optimizations) use std::ops::Range; -use std::{fmt, mem}; +use std::{cmp, fmt, mem}; use rustc_abi::Size; use rustc_data_structures::fx::FxHashSet; @@ -57,7 +57,7 @@ pub(super) struct LocationState { impl LocationState { /// Constructs a new initial state. It has neither been accessed, nor been subjected /// to any foreign access yet. - /// The permission is not allowed to be `Active`. + /// The permission is not allowed to be `Unique`. /// `sifa` is the (strongest) idempotent foreign access, see `foreign_access_skipping.rs` pub fn new_non_accessed(permission: Permission, sifa: IdempotentForeignAccess) -> Self { assert!(permission.is_initial() || permission.is_disabled()); @@ -73,23 +73,10 @@ impl LocationState { /// Check if the location has been accessed, i.e. if it has /// ever been accessed through a child pointer. - pub fn is_accessed(&self) -> bool { + pub fn accessed(&self) -> bool { self.accessed } - /// Check if the state can exist as the initial permission of a pointer. - /// - /// Do not confuse with `is_accessed`, the two are almost orthogonal - /// as apart from `Active` which is not initial and must be accessed, - /// any other permission can have an arbitrary combination of being - /// initial/accessed. - /// FIXME: when the corresponding `assert` in `tree_borrows/mod.rs` finally - /// passes and can be uncommented, remove this `#[allow(dead_code)]`. - #[cfg_attr(not(test), allow(dead_code))] - pub fn is_initial(&self) -> bool { - self.permission.is_initial() - } - pub fn permission(&self) -> Permission { self.permission } @@ -170,7 +157,7 @@ impl LocationState { } if self.permission.is_frozen() && access_kind == AccessKind::Read { // A foreign read to a `Frozen` tag will have almost no observable effect. - // It's a theorem that `Frozen` nodes have no active children, so all children + // It's a theorem that `Frozen` nodes have no `Unique` children, so all children // already survive foreign reads. Foreign reads in general have almost no // effect, the only further thing they could do is make protected `Reserved` // nodes become conflicted, i.e. make them reject child writes for the further @@ -265,7 +252,7 @@ pub(super) struct Node { pub children: SmallVec<[UniIndex; 4]>, /// Either `Reserved`, `Frozen`, or `Disabled`, it is the permission this tag will /// lazily be initialized to on the first access. - /// It is only ever `Disabled` for a tree root, since the root is initialized to `Active` by + /// It is only ever `Disabled` for a tree root, since the root is initialized to `Unique` by /// its own separate mechanism. default_initial_perm: Permission, /// The default initial (strongest) idempotent foreign access. @@ -598,14 +585,14 @@ impl Tree { }; let rperms = { let mut perms = UniValMap::default(); - // We manually set it to `Active` on all in-bounds positions. - // We also ensure that it is accessed, so that no `Active` but + // We manually set it to `Unique` on all in-bounds positions. + // We also ensure that it is accessed, so that no `Unique` but // not yet accessed nodes exist. Essentially, we pretend there - // was a write that initialized these to `Active`. + // was a write that initialized these to `Unique`. perms.insert( root_idx, LocationState::new_accessed( - Permission::new_active(), + Permission::new_unique(), IdempotentForeignAccess::None, ), ); @@ -618,30 +605,26 @@ impl Tree { impl<'tcx> Tree { /// Insert a new tag in the tree. /// - /// `initial_perms` defines the initial permissions for the part of memory - /// that is already considered "initialized" immediately. The ranges in this - /// map are relative to `base_offset`. - /// `default_perm` defines the initial permission for the rest of the allocation. - /// - /// For all non-accessed locations in the RangeMap (those that haven't had an - /// implicit read), their SIFA must be weaker than or as weak as the SIFA of - /// `default_perm`. + /// `inside_perm` defines the initial permissions for a block of memory starting at + /// `base_offset`. These may nor may not be already marked as "accessed". + /// `outside_perm` defines the initial permission for the rest of the allocation. + /// These are definitely not "accessed". pub(super) fn new_child( &mut self, base_offset: Size, parent_tag: BorTag, new_tag: BorTag, - initial_perms: DedupRangeMap<LocationState>, - default_perm: Permission, + inside_perms: DedupRangeMap<LocationState>, + outside_perm: Permission, protected: bool, span: Span, ) -> InterpResult<'tcx> { let idx = self.tag_mapping.insert(new_tag); let parent_idx = self.tag_mapping.get(&parent_tag).unwrap(); - assert!(default_perm.is_initial()); + assert!(outside_perm.is_initial()); let default_strongest_idempotent = - default_perm.strongest_idempotent_foreign_access(protected); + outside_perm.strongest_idempotent_foreign_access(protected); // Create the node self.nodes.insert( idx, @@ -649,47 +632,57 @@ impl<'tcx> Tree { tag: new_tag, parent: Some(parent_idx), children: SmallVec::default(), - default_initial_perm: default_perm, + default_initial_perm: outside_perm, default_initial_idempotent_foreign_access: default_strongest_idempotent, - debug_info: NodeDebugInfo::new(new_tag, default_perm, span), + debug_info: NodeDebugInfo::new(new_tag, outside_perm, span), }, ); // Register new_tag as a child of parent_tag self.nodes.get_mut(parent_idx).unwrap().children.push(idx); + // We need to know the weakest SIFA for `update_idempotent_foreign_access_after_retag`. + let mut min_sifa = default_strongest_idempotent; for (Range { start, end }, &perm) in - initial_perms.iter(Size::from_bytes(0), initial_perms.size()) + inside_perms.iter(Size::from_bytes(0), inside_perms.size()) { - assert!(perm.is_initial()); + assert!(perm.permission.is_initial()); + assert_eq!( + perm.idempotent_foreign_access, + perm.permission.strongest_idempotent_foreign_access(protected) + ); + + min_sifa = cmp::min(min_sifa, perm.idempotent_foreign_access); for (_perms_range, perms) in self .rperms .iter_mut(Size::from_bytes(start) + base_offset, Size::from_bytes(end - start)) { - assert!( - default_strongest_idempotent - >= perm.permission.strongest_idempotent_foreign_access(protected) - ); perms.insert(idx, perm); } } - // Inserting the new perms might have broken the SIFA invariant (see `foreign_access_skipping.rs`). - // We now weaken the recorded SIFA for our parents, until the invariant is restored. - // We could weaken them all to `LocalAccess`, but it is more efficient to compute the SIFA - // for the new permission statically, and use that. - // See the comment in `tb_reborrow` for why it is correct to use the SIFA of `default_uninit_perm`. - self.update_last_accessed_after_retag(parent_idx, default_strongest_idempotent); + // Inserting the new perms might have broken the SIFA invariant (see + // `foreign_access_skipping.rs`) if the SIFA we inserted is weaker than that of some parent. + // We now weaken the recorded SIFA for our parents, until the invariant is restored. We + // could weaken them all to `None`, but it is more efficient to compute the SIFA for the new + // permission statically, and use that. For this we need the *minimum* SIFA (`None` needs + // more fixup than `Write`). + self.update_idempotent_foreign_access_after_retag(parent_idx, min_sifa); interp_ok(()) } - /// Restores the SIFA "children are stronger" invariant after a retag. - /// See `foreign_access_skipping` and `new_child`. - fn update_last_accessed_after_retag( + /// Restores the SIFA "children are stronger"/"parents are weaker" invariant after a retag: + /// reduce the SIFA of `current` and its parents to be no stronger than `strongest_allowed`. + /// See `foreign_access_skipping.rs` and [`Tree::new_child`]. + fn update_idempotent_foreign_access_after_retag( &mut self, mut current: UniIndex, strongest_allowed: IdempotentForeignAccess, ) { + if strongest_allowed == IdempotentForeignAccess::Write { + // Nothing is stronger than `Write`. + return; + } // We walk the tree upwards, until the invariant is restored loop { let current_node = self.nodes.get_mut(current).unwrap(); @@ -755,9 +748,9 @@ impl<'tcx> Tree { == Some(&ProtectorKind::StrongProtector) // Don't check for protector if it is a Cell (see `unsafe_cell_deallocate` in `interior_mutability.rs`). // Related to https://github.com/rust-lang/rust/issues/55005. - && !perm.permission().is_cell() + && !perm.permission.is_cell() // Only trigger UB if the accessed bit is set, i.e. if the protector is actually protecting this offset. See #4579. - && perm.is_accessed() + && perm.accessed { Err(TransitionError::ProtectedDealloc) } else { @@ -790,7 +783,7 @@ impl<'tcx> Tree { /// - the access will be applied only to accessed locations of the allocation, /// - it will not be visible to children, /// - it will be recorded as a `FnExit` diagnostic access - /// - and it will be a read except if the location is `Active`, i.e. has been written to, + /// - and it will be a read except if the location is `Unique`, i.e. has been written to, /// in which case it will be a write. /// /// `LocationState::perform_access` will take care of raising transition diff --git a/src/tools/miri/src/borrow_tracker/tree_borrows/tree/tests.rs b/src/tools/miri/src/borrow_tracker/tree_borrows/tree/tests.rs index d9b3696e4f8..189e48eca72 100644 --- a/src/tools/miri/src/borrow_tracker/tree_borrows/tree/tests.rs +++ b/src/tools/miri/src/borrow_tracker/tree_borrows/tree/tests.rs @@ -106,7 +106,7 @@ fn tree_compacting_is_sound() { as_foreign_or_child(rel), kind, parent.permission(), - as_lazy_or_accessed(child.is_accessed()), + as_lazy_or_accessed(child.accessed()), child.permission(), as_protected(child_protected), np.permission(), @@ -122,7 +122,7 @@ fn tree_compacting_is_sound() { as_foreign_or_child(rel), kind, parent.permission(), - as_lazy_or_accessed(child.is_accessed()), + as_lazy_or_accessed(child.accessed()), child.permission(), as_protected(child_protected), nc.permission() @@ -375,7 +375,7 @@ mod spurious_read { impl LocStateProt { fn is_initial(&self) -> bool { - self.state.is_initial() + self.state.permission().is_initial() } fn perform_access(&self, kind: AccessKind, rel: AccessRelatedness) -> Result<Self, ()> { @@ -420,7 +420,7 @@ mod spurious_read { /// `(LocStateProt, LocStateProt)` where the two states are not guaranteed /// to be updated at the same time. /// Some `LocStateProtPair` may be unreachable through normal means - /// such as `x: Active, y: Active` in the case of mutually foreign pointers. + /// such as `x: Unique, y: Unique` in the case of mutually foreign pointers. struct LocStateProtPair { xy_rel: RelPosXY, x: LocStateProt, @@ -709,7 +709,7 @@ mod spurious_read { let mut err = 0; for pat in Pattern::exhaustive() { let Ok(initial_source) = pat.initial_state() else { - // Failed to retag `x` in the source (e.g. `y` was protected Active) + // Failed to retag `x` in the source (e.g. `y` was protected Unique) continue; }; // `x` must stay protected, but the function protecting `y` might return here diff --git a/src/tools/miri/src/concurrency/sync.rs b/src/tools/miri/src/concurrency/sync.rs index 15d486c27e3..e4e7fb1d725 100644 --- a/src/tools/miri/src/concurrency/sync.rs +++ b/src/tools/miri/src/concurrency/sync.rs @@ -381,8 +381,8 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { // We need to drop our mutex borrow before unblock_thread // because it will be borrowed again in the unblock callback. drop(mutex); - if thread_id.is_some() { - this.unblock_thread(thread_id.unwrap(), BlockReason::Mutex)?; + if let Some(thread_id) = thread_id { + this.unblock_thread(thread_id, BlockReason::Mutex)?; } } Some(old_lock_count) diff --git a/src/tools/miri/src/intrinsics/math.rs b/src/tools/miri/src/intrinsics/math.rs index b9c99f28594..0cc4342f0d5 100644 --- a/src/tools/miri/src/intrinsics/math.rs +++ b/src/tools/miri/src/intrinsics/math.rs @@ -1,4 +1,3 @@ -use rand::Rng; use rustc_apfloat::{self, Float, FloatConvert, Round}; use rustc_middle::mir; use rustc_middle::ty::{self, FloatTy}; @@ -39,46 +38,6 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> { "sqrtf64" => sqrt::<rustc_apfloat::ieee::Double>(this, args, dest)?, "sqrtf128" => sqrt::<rustc_apfloat::ieee::Quad>(this, args, dest)?, - "fmaf32" => { - let [a, b, c] = check_intrinsic_arg_count(args)?; - let a = this.read_scalar(a)?.to_f32()?; - let b = this.read_scalar(b)?.to_f32()?; - let c = this.read_scalar(c)?.to_f32()?; - let res = a.mul_add(b, c).value; - let res = this.adjust_nan(res, &[a, b, c]); - this.write_scalar(res, dest)?; - } - "fmaf64" => { - let [a, b, c] = check_intrinsic_arg_count(args)?; - let a = this.read_scalar(a)?.to_f64()?; - let b = this.read_scalar(b)?.to_f64()?; - let c = this.read_scalar(c)?.to_f64()?; - let res = a.mul_add(b, c).value; - let res = this.adjust_nan(res, &[a, b, c]); - this.write_scalar(res, dest)?; - } - - "fmuladdf32" => { - let [a, b, c] = check_intrinsic_arg_count(args)?; - let a = this.read_scalar(a)?.to_f32()?; - let b = this.read_scalar(b)?.to_f32()?; - let c = this.read_scalar(c)?.to_f32()?; - let fuse: bool = this.machine.float_nondet && this.machine.rng.get_mut().random(); - let res = if fuse { a.mul_add(b, c).value } else { ((a * b).value + c).value }; - let res = this.adjust_nan(res, &[a, b, c]); - this.write_scalar(res, dest)?; - } - "fmuladdf64" => { - let [a, b, c] = check_intrinsic_arg_count(args)?; - let a = this.read_scalar(a)?.to_f64()?; - let b = this.read_scalar(b)?.to_f64()?; - let c = this.read_scalar(c)?.to_f64()?; - let fuse: bool = this.machine.float_nondet && this.machine.rng.get_mut().random(); - let res = if fuse { a.mul_add(b, c).value } else { ((a * b).value + c).value }; - let res = this.adjust_nan(res, &[a, b, c]); - this.write_scalar(res, dest)?; - } - #[rustfmt::skip] | "fadd_fast" | "fsub_fast" diff --git a/src/tools/miri/src/lib.rs b/src/tools/miri/src/lib.rs index 7f5f25b9f66..1f82f154b0b 100644 --- a/src/tools/miri/src/lib.rs +++ b/src/tools/miri/src/lib.rs @@ -1,4 +1,3 @@ -#![cfg_attr(bootstrap, feature(strict_overflow_ops))] #![feature(abort_unwind)] #![feature(cfg_select)] #![feature(rustc_private)] diff --git a/src/tools/miri/src/machine.rs b/src/tools/miri/src/machine.rs index 04c8bee72c0..412640a112c 100644 --- a/src/tools/miri/src/machine.rs +++ b/src/tools/miri/src/machine.rs @@ -1294,6 +1294,11 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> { } #[inline(always)] + fn float_fuse_mul_add(ecx: &mut InterpCx<'tcx, Self>) -> bool { + ecx.machine.float_nondet && ecx.machine.rng.get_mut().random() + } + + #[inline(always)] fn ub_checks(ecx: &InterpCx<'tcx, Self>) -> InterpResult<'tcx, bool> { interp_ok(ecx.tcx.sess.ub_checks()) } @@ -1336,7 +1341,7 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> { name = ecx.tcx.def_path_str(def_id), krate = ecx.tcx.crate_name(def_id.krate), decl_size = extern_decl_layout.size.bytes(), - decl_align = extern_decl_layout.align.abi.bytes(), + decl_align = extern_decl_layout.align.bytes(), shim_size = info.size.bytes(), shim_align = info.align.bytes(), ) diff --git a/src/tools/miri/tests/fail/async-shared-mutable.tree.stderr b/src/tools/miri/tests/fail/async-shared-mutable.tree.stderr index 449a29088a0..dc8b4f6665a 100644 --- a/src/tools/miri/tests/fail/async-shared-mutable.tree.stderr +++ b/src/tools/miri/tests/fail/async-shared-mutable.tree.stderr @@ -16,7 +16,7 @@ LL | | Poll::<()>::Pending LL | | }) LL | | .await | |______________^ -help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [OFFSET] +help: the accessed tag <TAG> later transitioned to Unique due to a child write access at offsets [OFFSET] --> tests/fail/async-shared-mutable.rs:LL:CC | LL | *x = 1; diff --git a/src/tools/miri/tests/fail/both_borrows/box_noalias_violation.tree.stderr b/src/tools/miri/tests/fail/both_borrows/box_noalias_violation.tree.stderr index 3c8ec7f7d3e..6a1f7761a41 100644 --- a/src/tools/miri/tests/fail/both_borrows/box_noalias_violation.tree.stderr +++ b/src/tools/miri/tests/fail/both_borrows/box_noalias_violation.tree.stderr @@ -7,7 +7,7 @@ LL | *y = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign read access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign read access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/both_borrows/box_noalias_violation.rs:LL:CC @@ -19,7 +19,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | unsafe fn test(mut x: Box<i32>, y: *const i32) -> i32 { | ^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/both_borrows/box_noalias_violation.rs:LL:CC | LL | *x = 5; diff --git a/src/tools/miri/tests/fail/both_borrows/illegal_write6.tree.stderr b/src/tools/miri/tests/fail/both_borrows/illegal_write6.tree.stderr index 6780e52c3ba..1547a6ca73a 100644 --- a/src/tools/miri/tests/fail/both_borrows/illegal_write6.tree.stderr +++ b/src/tools/miri/tests/fail/both_borrows/illegal_write6.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { *y = 2 }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign write access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign write access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/both_borrows/illegal_write6.rs:LL:CC @@ -19,7 +19,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | fn foo(a: &mut u32, y: *mut u32) -> u32 { | ^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/both_borrows/illegal_write6.rs:LL:CC | LL | *a = 1; diff --git a/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias.tree.stderr b/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias.tree.stderr index 2266a9c39f9..2d9ce2aa1fb 100644 --- a/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias.tree.stderr @@ -7,7 +7,7 @@ LL | Call(_unit = callee(Move(non_copy), Move(non_copy)), ReturnTo(a = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign read access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign read access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/arg_inplace_locals_alias.rs:LL:CC @@ -19,7 +19,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | y.0 = 0; | ^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/arg_inplace_locals_alias.rs:LL:CC | LL | y.0 = 0; diff --git a/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias_ret.tree.stderr b/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias_ret.tree.stderr index b7f514de0af..42e391b5daf 100644 --- a/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias_ret.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/arg_inplace_locals_alias_ret.tree.stderr @@ -7,7 +7,7 @@ LL | Call(_non_copy = callee(Move(_non_copy)), ReturnTo(after_call), = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this reborrow (acting as a foreign read access) would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this reborrow (acting as a foreign read access) would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/arg_inplace_locals_alias_ret.rs:LL:CC @@ -19,7 +19,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | x | ^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/arg_inplace_locals_alias_ret.rs:LL:CC | LL | x diff --git a/src/tools/miri/tests/fail/function_calls/arg_inplace_mutate.tree.stderr b/src/tools/miri/tests/fail/function_calls/arg_inplace_mutate.tree.stderr index 1995528e9f9..74706d6b9f6 100644 --- a/src/tools/miri/tests/fail/function_calls/arg_inplace_mutate.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/arg_inplace_mutate.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { ptr.write(S(0)) }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign write access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign write access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC @@ -24,7 +24,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | unsafe { ptr.write(S(0)) }; | ^^^^^^^^^^^^^^^^^^^^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/arg_inplace_mutate.rs:LL:CC | LL | unsafe { ptr.write(S(0)) }; diff --git a/src/tools/miri/tests/fail/function_calls/arg_inplace_observe_during.tree.stderr b/src/tools/miri/tests/fail/function_calls/arg_inplace_observe_during.tree.stderr index e506a61c6bb..c8c0e5c37ef 100644 --- a/src/tools/miri/tests/fail/function_calls/arg_inplace_observe_during.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/arg_inplace_observe_during.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { ptr.read() }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign read access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign read access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/arg_inplace_observe_during.rs:LL:CC @@ -24,7 +24,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | x.0 = 0; | ^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/arg_inplace_observe_during.rs:LL:CC | LL | x.0 = 0; diff --git a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_read.tree.stderr b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_read.tree.stderr index b1aa2ba2886..b43e19c3905 100644 --- a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_read.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_read.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { ptr.read() }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign read access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign read access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/return_pointer_aliasing_read.rs:LL:CC @@ -24,7 +24,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | unsafe { ptr.read() }; | ^^^^^^^^^^^^^^^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/return_pointer_aliasing_read.rs:LL:CC | LL | unsafe { ptr.read() }; diff --git a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write.tree.stderr b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write.tree.stderr index 0cf449ea3ec..deefb24b785 100644 --- a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { ptr.write(0) }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign write access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign write access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/return_pointer_aliasing_write.rs:LL:CC @@ -24,7 +24,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | unsafe { ptr.write(0) }; | ^^^^^^^^^^^^^^^^^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/return_pointer_aliasing_write.rs:LL:CC | LL | unsafe { ptr.write(0) }; diff --git a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write_tail_call.tree.stderr b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write_tail_call.tree.stderr index a006c6feae4..76ccf39744d 100644 --- a/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write_tail_call.tree.stderr +++ b/src/tools/miri/tests/fail/function_calls/return_pointer_aliasing_write_tail_call.tree.stderr @@ -7,7 +7,7 @@ LL | unsafe { ptr.write(0) }; = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental = help: see https://github.com/rust-lang/unsafe-code-guidelines/blob/master/wip/tree-borrows.md for further information = help: the accessed tag <TAG> (root of the allocation) is foreign to the protected tag <TAG> (i.e., it is not a child) - = help: this foreign write access would cause the protected tag <TAG> (currently Active) to become Disabled + = help: this foreign write access would cause the protected tag <TAG> (currently Unique) to become Disabled = help: protected tags must never be Disabled help: the accessed tag <TAG> was created here --> tests/fail/function_calls/return_pointer_aliasing_write_tail_call.rs:LL:CC @@ -24,7 +24,7 @@ help: the protected tag <TAG> was created here, in the initial state Reserved | LL | unsafe { ptr.write(0) }; | ^^^^^^^^^^^^^^^^^^^^^^^ -help: the protected tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the protected tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/function_calls/return_pointer_aliasing_write_tail_call.rs:LL:CC | LL | unsafe { ptr.write(0) }; diff --git a/src/tools/miri/tests/fail/tree_borrows/alternate-read-write.stderr b/src/tools/miri/tests/fail/tree_borrows/alternate-read-write.stderr index 9e955a6d5b1..aff482abfa0 100644 --- a/src/tools/miri/tests/fail/tree_borrows/alternate-read-write.stderr +++ b/src/tools/miri/tests/fail/tree_borrows/alternate-read-write.stderr @@ -12,7 +12,7 @@ help: the accessed tag <TAG> was created here, in the initial state Reserved | LL | let y = unsafe { &mut *(x as *mut u8) }; | ^^^^^^^^^^^^^^^^^^^^ -help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x1] +help: the accessed tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x1] --> tests/fail/tree_borrows/alternate-read-write.rs:LL:CC | LL | *y += 1; // Success diff --git a/src/tools/miri/tests/fail/tree_borrows/fnentry_invalidation.stderr b/src/tools/miri/tests/fail/tree_borrows/fnentry_invalidation.stderr index 7886029dccf..bfd6854514e 100644 --- a/src/tools/miri/tests/fail/tree_borrows/fnentry_invalidation.stderr +++ b/src/tools/miri/tests/fail/tree_borrows/fnentry_invalidation.stderr @@ -12,7 +12,7 @@ help: the accessed tag <TAG> was created here, in the initial state Reserved | LL | let z = &mut x as *mut i32; | ^^^^^^ -help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the accessed tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/tree_borrows/fnentry_invalidation.rs:LL:CC | LL | *z = 1; diff --git a/src/tools/miri/tests/fail/tree_borrows/parent_read_freezes_raw_mut.stderr b/src/tools/miri/tests/fail/tree_borrows/parent_read_freezes_raw_mut.stderr index 2edbbd80569..7a713abcbc4 100644 --- a/src/tools/miri/tests/fail/tree_borrows/parent_read_freezes_raw_mut.stderr +++ b/src/tools/miri/tests/fail/tree_borrows/parent_read_freezes_raw_mut.stderr @@ -12,7 +12,7 @@ help: the accessed tag <TAG> was created here, in the initial state Reserved | LL | let mref = &mut root; | ^^^^^^^^^ -help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x1] +help: the accessed tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x1] --> tests/fail/tree_borrows/parent_read_freezes_raw_mut.rs:LL:CC | LL | *ptr = 0; // Write diff --git a/src/tools/miri/tests/fail/tree_borrows/pass_invalid_mut.stderr b/src/tools/miri/tests/fail/tree_borrows/pass_invalid_mut.stderr index c00c67173b7..9a70d248aa0 100644 --- a/src/tools/miri/tests/fail/tree_borrows/pass_invalid_mut.stderr +++ b/src/tools/miri/tests/fail/tree_borrows/pass_invalid_mut.stderr @@ -18,7 +18,7 @@ help: the conflicting tag <TAG> was created here, in the initial state Reserved | LL | let xref = unsafe { &mut *xraw }; | ^^^^^^^^^^ -help: the conflicting tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x4] +help: the conflicting tag <TAG> later transitioned to Unique due to a child write access at offsets [0x0..0x4] --> tests/fail/tree_borrows/pass_invalid_mut.rs:LL:CC | LL | *xref = 18; // activate xref diff --git a/src/tools/miri/tests/fail/tree_borrows/reservedim_spurious_write.rs b/src/tools/miri/tests/fail/tree_borrows/reservedim_spurious_write.rs index 024a14600b1..3e5d83911ee 100644 --- a/src/tools/miri/tests/fail/tree_borrows/reservedim_spurious_write.rs +++ b/src/tools/miri/tests/fail/tree_borrows/reservedim_spurious_write.rs @@ -60,8 +60,7 @@ fn main() { fn inner(x: &mut u8, b: IdxBarrier) { *x = 42; // activate immediately synchronized!(b, "[lazy] retag y (&mut, protect, IM)"); - // A spurious write should be valid here because `x` is - // `Active` and protected. + // A spurious write should be valid here because `x` is `Unique` and protected. if cfg!(with) { synchronized!(b, "spurious write x (executed)"); *x = 64; diff --git a/src/tools/miri/tests/fail/tree_borrows/return_invalid_mut.stderr b/src/tools/miri/tests/fail/tree_borrows/return_invalid_mut.stderr index ba8ab472872..4b6308847bb 100644 --- a/src/tools/miri/tests/fail/tree_borrows/return_invalid_mut.stderr +++ b/src/tools/miri/tests/fail/tree_borrows/return_invalid_mut.stderr @@ -18,7 +18,7 @@ help: the conflicting tag <TAG> was created here, in the initial state Reserved | LL | let ret = unsafe { &mut (*xraw).1 }; | ^^^^^^^^^^^^^^ -help: the conflicting tag <TAG> later transitioned to Active due to a child write access at offsets [0x4..0x8] +help: the conflicting tag <TAG> later transitioned to Unique due to a child write access at offsets [0x4..0x8] --> tests/fail/tree_borrows/return_invalid_mut.rs:LL:CC | LL | *ret = *ret; // activate diff --git a/src/tools/miri/tests/fail/tree_borrows/subtree_traversal_skipping_diagnostics.rs b/src/tools/miri/tests/fail/tree_borrows/subtree_traversal_skipping_diagnostics.rs index 6514334b09d..94a3bb80544 100644 --- a/src/tools/miri/tests/fail/tree_borrows/subtree_traversal_skipping_diagnostics.rs +++ b/src/tools/miri/tests/fail/tree_borrows/subtree_traversal_skipping_diagnostics.rs @@ -5,7 +5,7 @@ // When this method is called, the tree will be a single line and look like this, // with other_ptr being the root at the top -// other_ptr = root : Active +// other_ptr = root : Unique // intermediary : Frozen // an intermediary node // m : Reserved fn write_to_mut(m: &mut u8, other_ptr: *const u8) { diff --git a/src/tools/miri/tests/fail/tree_borrows/unique.default.stderr b/src/tools/miri/tests/fail/tree_borrows/unique.default.stderr deleted file mode 100644 index c7d72f70f40..00000000000 --- a/src/tools/miri/tests/fail/tree_borrows/unique.default.stderr +++ /dev/null @@ -1,32 +0,0 @@ -error: Undefined Behavior: write access through <TAG> at ALLOC[0x0] is forbidden - --> tests/fail/tree_borrows/unique.rs:LL:CC - | -LL | *uniq.as_ptr() = 3; - | ^^^^^^^^^^^^^^^^^^ write access through <TAG> at ALLOC[0x0] is forbidden - | - = help: this indicates a potential bug in the program: it performed an invalid operation, but the Tree Borrows rules it violated are still experimental - = help: the accessed tag <TAG> has state Frozen which forbids this child write access -help: the accessed tag <TAG> was created here, in the initial state Reserved - --> tests/fail/tree_borrows/unique.rs:LL:CC - | -LL | let refmut = &mut data; - | ^^^^^^^^^ -help: the accessed tag <TAG> later transitioned to Active due to a child write access at offsets [0x0..0x1] - --> tests/fail/tree_borrows/unique.rs:LL:CC - | -LL | *uniq.as_ptr() = 1; // activation - | ^^^^^^^^^^^^^^^^^^ - = help: this transition corresponds to the first write to a 2-phase borrowed mutable reference -help: the accessed tag <TAG> later transitioned to Frozen due to a foreign read access at offsets [0x0..0x1] - --> tests/fail/tree_borrows/unique.rs:LL:CC - | -LL | let _definitely_parent = data; // definitely Frozen by now - | ^^^^ - = help: this transition corresponds to a loss of write permissions - = note: BACKTRACE (of the first span): - = note: inside `main` at tests/fail/tree_borrows/unique.rs:LL:CC - -note: some details are omitted, run with `MIRIFLAGS=-Zmiri-backtrace=full` for a verbose backtrace - -error: aborting due to 1 previous error - diff --git a/src/tools/miri/tests/panic/mir-validation.rs b/src/tools/miri/tests/panic/mir-validation.rs index b9097f2e8c5..2d0d530754d 100644 --- a/src/tools/miri/tests/panic/mir-validation.rs +++ b/src/tools/miri/tests/panic/mir-validation.rs @@ -9,11 +9,6 @@ // and we don't even get a regular panic; rustc aborts with a different exit code instead. //@ignore-host: windows -// FIXME: this tests a crash in rustc. For stage1, rustc is built with the downloaded standard -// library which doesn't yet print the thread ID. Normalization can be removed at the stage bump. -// For the grep: cfg(bootstrap) -//@normalize-stderr-test: "thread 'rustc' panicked" -> "thread 'rustc' ($$TID) panicked" - #![feature(custom_mir, core_intrinsics)] use core::intrinsics::mir::*; diff --git a/src/tools/miri/tests/pass/0weak_memory/weak.rs b/src/tools/miri/tests/pass/0weak_memory/weak.rs index c752fc114ba..611733d0dac 100644 --- a/src/tools/miri/tests/pass/0weak_memory/weak.rs +++ b/src/tools/miri/tests/pass/0weak_memory/weak.rs @@ -13,6 +13,10 @@ use std::sync::atomic::Ordering::*; use std::sync::atomic::{AtomicUsize, fence}; use std::thread::spawn; +#[path = "../../utils/mod.rs"] +mod utils; +use utils::check_all_outcomes; + #[allow(dead_code)] #[derive(Copy, Clone)] struct EvilSend<T>(pub T); @@ -33,35 +37,6 @@ fn spin_until(loc: &AtomicUsize, val: usize) -> usize { val } -/// Check that the function produces the intended set of outcomes. -#[track_caller] -fn check_all_outcomes<T: Eq + std::hash::Hash + std::fmt::Debug>( - expected: impl IntoIterator<Item = T>, - generate: impl Fn() -> T, -) { - use std::collections::HashSet; - - let expected: HashSet<T> = HashSet::from_iter(expected); - let mut seen = HashSet::new(); - // Let's give it N times as many tries as we are expecting values. - let tries = expected.len() * 16; - for i in 0..tries { - let val = generate(); - assert!(expected.contains(&val), "got an unexpected value: {val:?}"); - seen.insert(val); - if i > tries / 2 && expected.len() == seen.len() { - // We saw everything and we did quite a few tries, let's avoid wasting time. - return; - } - } - // Let's see if we saw them all. - for val in expected { - if !seen.contains(&val) { - panic!("did not get value that should be possible: {val:?}"); - } - } -} - fn relaxed() { check_all_outcomes([0, 1, 2], || { let x = static_atomic(0); diff --git a/src/tools/miri/tests/pass/both_borrows/smallvec.rs b/src/tools/miri/tests/pass/both_borrows/smallvec.rs index f48815e37be..fa5cfb03de2 100644 --- a/src/tools/miri/tests/pass/both_borrows/smallvec.rs +++ b/src/tools/miri/tests/pass/both_borrows/smallvec.rs @@ -25,7 +25,7 @@ impl<T, const N: usize> RawSmallVec<T, N> { } const fn as_mut_ptr_inline(&mut self) -> *mut T { - (unsafe { &raw mut self.inline }) as *mut T + &raw mut self.inline as *mut T } const unsafe fn as_mut_ptr_heap(&mut self) -> *mut T { diff --git a/src/tools/miri/tests/pass/float.rs b/src/tools/miri/tests/pass/float.rs index 3a764329f9b..67a14c2b389 100644 --- a/src/tools/miri/tests/pass/float.rs +++ b/src/tools/miri/tests/pass/float.rs @@ -8,12 +8,16 @@ #![allow(internal_features)] #![allow(unnecessary_transmutes)] +#[path = "../utils/mod.rs"] +mod utils; use std::any::type_name; use std::cmp::min; use std::fmt::{Debug, Display, LowerHex}; use std::hint::black_box; use std::{f32, f64}; +use utils::check_nondet; + /// Compare the two floats, allowing for $ulp many ULPs of error. /// /// ULP means "Units in the Last Place" or "Units of Least Precision". @@ -1429,29 +1433,14 @@ fn test_fmuladd() { /// `min` and `max` on equal arguments are non-deterministic. fn test_min_max_nondet() { - /// Ensure that if we call the closure often enough, we see both `true` and `false.` - #[track_caller] - fn ensure_both(f: impl Fn() -> bool) { - let rounds = 32; - let first = f(); - for _ in 1..rounds { - if f() != first { - // We saw two different values! - return; - } - } - // We saw the same thing N times. - panic!("expected non-determinism, got {rounds} times the same result: {first:?}"); - } - - ensure_both(|| f16::min(0.0, -0.0).is_sign_positive()); - ensure_both(|| f16::max(0.0, -0.0).is_sign_positive()); - ensure_both(|| f32::min(0.0, -0.0).is_sign_positive()); - ensure_both(|| f32::max(0.0, -0.0).is_sign_positive()); - ensure_both(|| f64::min(0.0, -0.0).is_sign_positive()); - ensure_both(|| f64::max(0.0, -0.0).is_sign_positive()); - ensure_both(|| f128::min(0.0, -0.0).is_sign_positive()); - ensure_both(|| f128::max(0.0, -0.0).is_sign_positive()); + check_nondet(|| f16::min(0.0, -0.0).is_sign_positive()); + check_nondet(|| f16::max(0.0, -0.0).is_sign_positive()); + check_nondet(|| f32::min(0.0, -0.0).is_sign_positive()); + check_nondet(|| f32::max(0.0, -0.0).is_sign_positive()); + check_nondet(|| f64::min(0.0, -0.0).is_sign_positive()); + check_nondet(|| f64::max(0.0, -0.0).is_sign_positive()); + check_nondet(|| f128::min(0.0, -0.0).is_sign_positive()); + check_nondet(|| f128::max(0.0, -0.0).is_sign_positive()); } fn test_non_determinism() { @@ -1461,35 +1450,20 @@ fn test_non_determinism() { }; use std::{f32, f64}; - /// Ensure that the operation is non-deterministic - #[track_caller] - fn ensure_nondet<T: PartialEq + std::fmt::Debug>(f: impl Fn() -> T) { - let rounds = 16; - let first = f(); - for _ in 1..rounds { - if f() != first { - // We saw two different values! - return; - } - } - // We saw the same thing N times. - panic!("expected non-determinism, got {rounds} times the same result: {first:?}"); - } - macro_rules! test_operations_f { ($a:expr, $b:expr) => { - ensure_nondet(|| fadd_algebraic($a, $b)); - ensure_nondet(|| fsub_algebraic($a, $b)); - ensure_nondet(|| fmul_algebraic($a, $b)); - ensure_nondet(|| fdiv_algebraic($a, $b)); - ensure_nondet(|| frem_algebraic($a, $b)); + check_nondet(|| fadd_algebraic($a, $b)); + check_nondet(|| fsub_algebraic($a, $b)); + check_nondet(|| fmul_algebraic($a, $b)); + check_nondet(|| fdiv_algebraic($a, $b)); + check_nondet(|| frem_algebraic($a, $b)); unsafe { - ensure_nondet(|| fadd_fast($a, $b)); - ensure_nondet(|| fsub_fast($a, $b)); - ensure_nondet(|| fmul_fast($a, $b)); - ensure_nondet(|| fdiv_fast($a, $b)); - ensure_nondet(|| frem_fast($a, $b)); + check_nondet(|| fadd_fast($a, $b)); + check_nondet(|| fsub_fast($a, $b)); + check_nondet(|| fmul_fast($a, $b)); + check_nondet(|| fdiv_fast($a, $b)); + check_nondet(|| frem_fast($a, $b)); } }; } @@ -1499,70 +1473,70 @@ fn test_non_determinism() { } pub fn test_operations_f32(a: f32, b: f32) { test_operations_f!(a, b); - ensure_nondet(|| a.powf(b)); - ensure_nondet(|| a.powi(2)); - ensure_nondet(|| a.log(b)); - ensure_nondet(|| a.exp()); - ensure_nondet(|| 10f32.exp2()); - ensure_nondet(|| f32::consts::E.ln()); - ensure_nondet(|| 10f32.log10()); - ensure_nondet(|| 8f32.log2()); - ensure_nondet(|| 1f32.ln_1p()); - ensure_nondet(|| 27.0f32.cbrt()); - ensure_nondet(|| 3.0f32.hypot(4.0f32)); - ensure_nondet(|| 1f32.sin()); - ensure_nondet(|| 1f32.cos()); + check_nondet(|| a.powf(b)); + check_nondet(|| a.powi(2)); + check_nondet(|| a.log(b)); + check_nondet(|| a.exp()); + check_nondet(|| 10f32.exp2()); + check_nondet(|| f32::consts::E.ln()); + check_nondet(|| 10f32.log10()); + check_nondet(|| 8f32.log2()); + check_nondet(|| 1f32.ln_1p()); + check_nondet(|| 27.0f32.cbrt()); + check_nondet(|| 3.0f32.hypot(4.0f32)); + check_nondet(|| 1f32.sin()); + check_nondet(|| 1f32.cos()); // On i686-pc-windows-msvc , these functions are implemented by calling the `f64` version, // which means the little rounding errors Miri introduces are discarded by the cast down to // `f32`. Just skip the test for them. if !cfg!(all(target_os = "windows", target_env = "msvc", target_arch = "x86")) { - ensure_nondet(|| 1.0f32.tan()); - ensure_nondet(|| 1.0f32.asin()); - ensure_nondet(|| 5.0f32.acos()); - ensure_nondet(|| 1.0f32.atan()); - ensure_nondet(|| 1.0f32.atan2(2.0f32)); - ensure_nondet(|| 1.0f32.sinh()); - ensure_nondet(|| 1.0f32.cosh()); - ensure_nondet(|| 1.0f32.tanh()); + check_nondet(|| 1.0f32.tan()); + check_nondet(|| 1.0f32.asin()); + check_nondet(|| 5.0f32.acos()); + check_nondet(|| 1.0f32.atan()); + check_nondet(|| 1.0f32.atan2(2.0f32)); + check_nondet(|| 1.0f32.sinh()); + check_nondet(|| 1.0f32.cosh()); + check_nondet(|| 1.0f32.tanh()); } - ensure_nondet(|| 1.0f32.asinh()); - ensure_nondet(|| 2.0f32.acosh()); - ensure_nondet(|| 0.5f32.atanh()); - ensure_nondet(|| 5.0f32.gamma()); - ensure_nondet(|| 5.0f32.ln_gamma()); - ensure_nondet(|| 5.0f32.erf()); - ensure_nondet(|| 5.0f32.erfc()); + check_nondet(|| 1.0f32.asinh()); + check_nondet(|| 2.0f32.acosh()); + check_nondet(|| 0.5f32.atanh()); + check_nondet(|| 5.0f32.gamma()); + check_nondet(|| 5.0f32.ln_gamma()); + check_nondet(|| 5.0f32.erf()); + check_nondet(|| 5.0f32.erfc()); } pub fn test_operations_f64(a: f64, b: f64) { test_operations_f!(a, b); - ensure_nondet(|| a.powf(b)); - ensure_nondet(|| a.powi(2)); - ensure_nondet(|| a.log(b)); - ensure_nondet(|| a.exp()); - ensure_nondet(|| 50f64.exp2()); - ensure_nondet(|| 3f64.ln()); - ensure_nondet(|| f64::consts::E.log10()); - ensure_nondet(|| f64::consts::E.log2()); - ensure_nondet(|| 1f64.ln_1p()); - ensure_nondet(|| 27.0f64.cbrt()); - ensure_nondet(|| 3.0f64.hypot(4.0f64)); - ensure_nondet(|| 1f64.sin()); - ensure_nondet(|| 1f64.cos()); - ensure_nondet(|| 1.0f64.tan()); - ensure_nondet(|| 1.0f64.asin()); - ensure_nondet(|| 5.0f64.acos()); - ensure_nondet(|| 1.0f64.atan()); - ensure_nondet(|| 1.0f64.atan2(2.0f64)); - ensure_nondet(|| 1.0f64.sinh()); - ensure_nondet(|| 1.0f64.cosh()); - ensure_nondet(|| 1.0f64.tanh()); - ensure_nondet(|| 1.0f64.asinh()); - ensure_nondet(|| 3.0f64.acosh()); - ensure_nondet(|| 0.5f64.atanh()); - ensure_nondet(|| 5.0f64.gamma()); - ensure_nondet(|| 5.0f64.ln_gamma()); - ensure_nondet(|| 5.0f64.erf()); - ensure_nondet(|| 5.0f64.erfc()); + check_nondet(|| a.powf(b)); + check_nondet(|| a.powi(2)); + check_nondet(|| a.log(b)); + check_nondet(|| a.exp()); + check_nondet(|| 50f64.exp2()); + check_nondet(|| 3f64.ln()); + check_nondet(|| f64::consts::E.log10()); + check_nondet(|| f64::consts::E.log2()); + check_nondet(|| 1f64.ln_1p()); + check_nondet(|| 27.0f64.cbrt()); + check_nondet(|| 3.0f64.hypot(4.0f64)); + check_nondet(|| 1f64.sin()); + check_nondet(|| 1f64.cos()); + check_nondet(|| 1.0f64.tan()); + check_nondet(|| 1.0f64.asin()); + check_nondet(|| 5.0f64.acos()); + check_nondet(|| 1.0f64.atan()); + check_nondet(|| 1.0f64.atan2(2.0f64)); + check_nondet(|| 1.0f64.sinh()); + check_nondet(|| 1.0f64.cosh()); + check_nondet(|| 1.0f64.tanh()); + check_nondet(|| 1.0f64.asinh()); + check_nondet(|| 3.0f64.acosh()); + check_nondet(|| 0.5f64.atanh()); + check_nondet(|| 5.0f64.gamma()); + check_nondet(|| 5.0f64.ln_gamma()); + check_nondet(|| 5.0f64.erf()); + check_nondet(|| 5.0f64.erfc()); } pub fn test_operations_f128(a: f128, b: f128) { test_operations_f!(a, b); @@ -1574,15 +1548,15 @@ fn test_non_determinism() { test_operations_f128(25., 18.); // SNaN^0 = (1 | NaN) - ensure_nondet(|| f32::powf(SNAN_F32, 0.0).is_nan()); - ensure_nondet(|| f64::powf(SNAN_F64, 0.0).is_nan()); + check_nondet(|| f32::powf(SNAN_F32, 0.0).is_nan()); + check_nondet(|| f64::powf(SNAN_F64, 0.0).is_nan()); // 1^SNaN = (1 | NaN) - ensure_nondet(|| f32::powf(1.0, SNAN_F32).is_nan()); - ensure_nondet(|| f64::powf(1.0, SNAN_F64).is_nan()); + check_nondet(|| f32::powf(1.0, SNAN_F32).is_nan()); + check_nondet(|| f64::powf(1.0, SNAN_F64).is_nan()); // same as powf (keep it consistent): // x^SNaN = (1 | NaN) - ensure_nondet(|| f32::powi(SNAN_F32, 0).is_nan()); - ensure_nondet(|| f64::powi(SNAN_F64, 0).is_nan()); + check_nondet(|| f32::powi(SNAN_F32, 0).is_nan()); + check_nondet(|| f64::powi(SNAN_F64, 0).is_nan()); } diff --git a/src/tools/miri/tests/pass/float_nan.rs b/src/tools/miri/tests/pass/float_nan.rs index 90281630740..c07ffdf9740 100644 --- a/src/tools/miri/tests/pass/float_nan.rs +++ b/src/tools/miri/tests/pass/float_nan.rs @@ -5,6 +5,10 @@ use std::fmt; use std::hint::black_box; +#[path = "../utils/mod.rs"] +mod utils; +use utils::check_all_outcomes; + fn ldexp(a: f64, b: i32) -> f64 { extern "C" { fn ldexp(x: f64, n: i32) -> f64; @@ -26,35 +30,6 @@ enum NaNKind { } use NaNKind::*; -/// Check that the function produces the intended set of outcomes. -#[track_caller] -fn check_all_outcomes<T: Eq + std::hash::Hash + fmt::Display>( - expected: impl IntoIterator<Item = T>, - generate: impl Fn() -> T, -) { - use std::collections::HashSet; - - let expected: HashSet<T> = HashSet::from_iter(expected); - let mut seen = HashSet::new(); - // Let's give it N times as many tries as we are expecting values. - let tries = expected.len() * 12; - for i in 0..tries { - let val = generate(); - assert!(expected.contains(&val), "got an unexpected value: {val}"); - seen.insert(val); - if i > tries / 2 && expected.len() == seen.len() { - // We saw everything and we did quite a few tries, let's avoid wasting time. - return; - } - } - // Let's see if we saw them all. - for val in expected { - if !seen.contains(&val) { - panic!("did not get value that should be possible: {val}"); - } - } -} - // -- f32 support #[repr(C)] #[derive(Copy, Clone, Eq, PartialEq, Hash)] @@ -81,7 +56,7 @@ const F32_EXP: u32 = 8; // 8 bits of exponent const F32_MANTISSA: u32 = F32_SIGN_BIT - F32_EXP; const F32_NAN_PAYLOAD: u32 = F32_MANTISSA - 1; -impl fmt::Display for F32 { +impl fmt::Debug for F32 { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { // Alaways show raw bits. write!(f, "0x{:08x} ", self.0)?; @@ -154,7 +129,7 @@ const F64_EXP: u32 = 11; // 11 bits of exponent const F64_MANTISSA: u32 = F64_SIGN_BIT - F64_EXP; const F64_NAN_PAYLOAD: u32 = F64_MANTISSA - 1; -impl fmt::Display for F64 { +impl fmt::Debug for F64 { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { // Alaways show raw bits. write!(f, "0x{:08x} ", self.0)?; diff --git a/src/tools/miri/tests/pass/intrinsics/fmuladd_nondeterministic.rs b/src/tools/miri/tests/pass/intrinsics/fmuladd_nondeterministic.rs index 4d3e91c4cba..abc156d49cb 100644 --- a/src/tools/miri/tests/pass/intrinsics/fmuladd_nondeterministic.rs +++ b/src/tools/miri/tests/pass/intrinsics/fmuladd_nondeterministic.rs @@ -3,73 +3,48 @@ use std::intrinsics::simd::simd_relaxed_fma; use std::intrinsics::{fmuladdf32, fmuladdf64}; use std::simd::prelude::*; -fn ensure_both_happen(f: impl Fn() -> bool) -> bool { - let mut saw_true = false; - let mut saw_false = false; - for _ in 0..50 { - let b = f(); - if b { - saw_true = true; - } else { - saw_false = true; - } - if saw_true && saw_false { - return true; - } - } - false -} +#[path = "../../utils/mod.rs"] +mod utils; +use utils::check_nondet; fn main() { - assert!( - ensure_both_happen(|| { - let a = std::hint::black_box(0.1_f64); - let b = std::hint::black_box(0.2); - let c = std::hint::black_box(-a * b); - // It is unspecified whether the following operation is fused or not. The - // following evaluates to 0.0 if unfused, and nonzero (-1.66e-18) if fused. - let x = fmuladdf64(a, b, c); - x == 0.0 - }), - "`fmuladdf64` failed to be evaluated as both fused and unfused" - ); + check_nondet(|| { + let a = std::hint::black_box(0.1_f64); + let b = std::hint::black_box(0.2); + let c = std::hint::black_box(-a * b); + // It is unspecified whether the following operation is fused or not. The + // following evaluates to 0.0 if unfused, and nonzero (-1.66e-18) if fused. + let x = fmuladdf64(a, b, c); + x == 0.0 + }); - assert!( - ensure_both_happen(|| { - let a = std::hint::black_box(0.1_f32); - let b = std::hint::black_box(0.2); - let c = std::hint::black_box(-a * b); - // It is unspecified whether the following operation is fused or not. The - // following evaluates to 0.0 if unfused, and nonzero (-8.1956386e-10) if fused. - let x = fmuladdf32(a, b, c); - x == 0.0 - }), - "`fmuladdf32` failed to be evaluated as both fused and unfused" - ); + check_nondet(|| { + let a = std::hint::black_box(0.1_f32); + let b = std::hint::black_box(0.2); + let c = std::hint::black_box(-a * b); + // It is unspecified whether the following operation is fused or not. The + // following evaluates to 0.0 if unfused, and nonzero (-8.1956386e-10) if fused. + let x = fmuladdf32(a, b, c); + x == 0.0 + }); - assert!( - ensure_both_happen(|| { - let a = f32x4::splat(std::hint::black_box(0.1)); - let b = f32x4::splat(std::hint::black_box(0.2)); - let c = std::hint::black_box(-a * b); - let x = unsafe { simd_relaxed_fma(a, b, c) }; - // Whether we fuse or not is a per-element decision, so sometimes these should be - // the same and sometimes not. - x[0] == x[1] - }), - "`simd_relaxed_fma` failed to be evaluated as both fused and unfused" - ); + check_nondet(|| { + let a = f32x4::splat(std::hint::black_box(0.1)); + let b = f32x4::splat(std::hint::black_box(0.2)); + let c = std::hint::black_box(-a * b); + let x = unsafe { simd_relaxed_fma(a, b, c) }; + // Whether we fuse or not is a per-element decision, so sometimes these should be + // the same and sometimes not. + x[0] == x[1] + }); - assert!( - ensure_both_happen(|| { - let a = f64x4::splat(std::hint::black_box(0.1)); - let b = f64x4::splat(std::hint::black_box(0.2)); - let c = std::hint::black_box(-a * b); - let x = unsafe { simd_relaxed_fma(a, b, c) }; - // Whether we fuse or not is a per-element decision, so sometimes these should be - // the same and sometimes not. - x[0] == x[1] - }), - "`simd_relaxed_fma` failed to be evaluated as both fused and unfused" - ); + check_nondet(|| { + let a = f64x4::splat(std::hint::black_box(0.1)); + let b = f64x4::splat(std::hint::black_box(0.2)); + let c = std::hint::black_box(-a * b); + let x = unsafe { simd_relaxed_fma(a, b, c) }; + // Whether we fuse or not is a per-element decision, so sometimes these should be + // the same and sometimes not. + x[0] == x[1] + }); } diff --git a/src/tools/miri/tests/pass/tree_borrows/cell-inside-box.rs b/src/tools/miri/tests/pass/tree_borrows/cell-inside-box.rs index adf2f4e845b..4a868455c84 100644 --- a/src/tools/miri/tests/pass/tree_borrows/cell-inside-box.rs +++ b/src/tools/miri/tests/pass/tree_borrows/cell-inside-box.rs @@ -20,7 +20,7 @@ pub fn main() { name!(ptr2); // We perform a write through `x`. - // Because `ptr1` is ReservedIM, a child write will make it transition to Active. + // Because `ptr1` is ReservedIM, a child write will make it transition to Unique. // Because `ptr2` is ReservedIM, a foreign write doesn't have any effect on it. let x = (*ptr1).get(); *x = 1; diff --git a/src/tools/miri/tests/pass/tree_borrows/reborrow-is-read.rs b/src/tools/miri/tests/pass/tree_borrows/reborrow-is-read.rs index 4fbccef2367..edd649b91ed 100644 --- a/src/tools/miri/tests/pass/tree_borrows/reborrow-is-read.rs +++ b/src/tools/miri/tests/pass/tree_borrows/reborrow-is-read.rs @@ -6,7 +6,7 @@ mod utils; // To check that a reborrow is counted as a Read access, we use a reborrow -// with no additional Read to Freeze an Active pointer. +// with no additional Read to Freeze an Unique pointer. fn main() { unsafe { @@ -15,7 +15,7 @@ fn main() { let alloc_id = alloc_id!(parent); let x = &mut *parent; name!(x); - *x = 0; // x is now Active + *x = 0; // x is now Unique print_state!(alloc_id); let y = &mut *parent; name!(y); diff --git a/src/tools/miri/tests/pass/tree_borrows/reserved.rs b/src/tools/miri/tests/pass/tree_borrows/reserved.rs index c57cd7fcf0a..83e1d9c70ed 100644 --- a/src/tools/miri/tests/pass/tree_borrows/reserved.rs +++ b/src/tools/miri/tests/pass/tree_borrows/reserved.rs @@ -68,7 +68,7 @@ unsafe fn cell_unprotected_read() { } // Foreign Write on an interior mutable pointer is a noop. -// Also y must become Active. +// Also y must become Unique. unsafe fn cell_unprotected_write() { print("[interior mut] Foreign Write: Re* -> Re*"); let base = &mut UnsafeCell::new(0u64); @@ -97,7 +97,7 @@ unsafe fn int_protected_read() { } // Foreign Read on a Reserved is a noop. -// Also y must become Active. +// Also y must become Unique. unsafe fn int_unprotected_read() { print("[] Foreign Read: Res -> Res"); let base = &mut 0u8; diff --git a/src/tools/miri/tests/pass/vec.rs b/src/tools/miri/tests/pass/vec.rs index 3e526813bb4..8b1b1e143b1 100644 --- a/src/tools/miri/tests/pass/vec.rs +++ b/src/tools/miri/tests/pass/vec.rs @@ -169,6 +169,15 @@ fn miri_issue_2759() { input.replace_range(0..0, "0"); } +/// This was skirting the edge of UB, let's make sure it remains on the sound side. +/// Context: <https://github.com/rust-lang/rust/pull/141032>. +fn extract_if() { + let mut v = vec![Box::new(0u64), Box::new(1u64)]; + for item in v.extract_if(.., |x| **x == 0) { + drop(item); + } +} + fn main() { assert_eq!(vec_reallocate().len(), 5); @@ -199,4 +208,5 @@ fn main() { swap_remove(); reverse(); miri_issue_2759(); + extract_if(); } diff --git a/src/tools/miri/tests/utils/mod.rs b/src/tools/miri/tests/utils/mod.rs index 138ada4e20d..37f99962163 100644 --- a/src/tools/miri/tests/utils/mod.rs +++ b/src/tools/miri/tests/utils/mod.rs @@ -16,3 +16,53 @@ pub fn run_provenance_gc() { // SAFETY: No preconditions. The GC is fine to run at any time. unsafe { miri_run_provenance_gc() } } + +/// Check that the function produces the intended set of outcomes. +#[track_caller] +pub fn check_all_outcomes<T: Eq + std::hash::Hash + std::fmt::Debug>( + expected: impl IntoIterator<Item = T>, + generate: impl Fn() -> T, +) { + use std::collections::HashSet; + + let expected: HashSet<T> = HashSet::from_iter(expected); + let mut seen = HashSet::new(); + // Let's give it N times as many tries as we are expecting values. + let min_tries = std::cmp::max(20, expected.len() * 4); + let max_tries = expected.len() * 50; + for i in 0..max_tries { + let val = generate(); + assert!(expected.contains(&val), "got an unexpected value: {val:?}"); + seen.insert(val); + if i >= min_tries && expected.len() == seen.len() { + // We saw everything and we did enough tries, let's avoid wasting time. + return; + } + } + // Let's see if we saw them all. + if expected.len() == seen.len() { + return; + } + // Find the missing one. + for val in expected { + if !seen.contains(&val) { + panic!("did not get value that should be possible: {val:?}"); + } + } + unreachable!() +} + +/// Check that the operation is non-deterministic +#[track_caller] +pub fn check_nondet<T: PartialEq + std::fmt::Debug>(f: impl Fn() -> T) { + let rounds = 50; + let first = f(); + for _ in 1..rounds { + if f() != first { + // We saw two different values! + return; + } + } + // We saw the same thing N times. + panic!("expected non-determinism, got {rounds} times the same result: {first:?}"); +} diff --git a/src/tools/run-make-support/src/external_deps/rustc.rs b/src/tools/run-make-support/src/external_deps/rustc.rs index b74b1d5e166..b461a24a061 100644 --- a/src/tools/run-make-support/src/external_deps/rustc.rs +++ b/src/tools/run-make-support/src/external_deps/rustc.rs @@ -366,6 +366,13 @@ impl Rustc { self } + pub fn split_dwarf_out_dir(&mut self, out_dir: Option<&str>) -> &mut Self { + if let Some(out_dir) = out_dir { + self.cmd.arg(format!("-Zsplit-dwarf-out-dir={out_dir}")); + } + self + } + /// Pass the `--verbose` flag. pub fn verbose(&mut self) -> &mut Self { self.cmd.arg("--verbose"); diff --git a/src/tools/rust-analyzer/crates/hir-def/src/lib.rs b/src/tools/rust-analyzer/crates/hir-def/src/lib.rs index 301d4cca066..e5c213ca937 100644 --- a/src/tools/rust-analyzer/crates/hir-def/src/lib.rs +++ b/src/tools/rust-analyzer/crates/hir-def/src/lib.rs @@ -15,10 +15,6 @@ extern crate rustc_parse_format; #[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_parse_format as rustc_parse_format; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_abi; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_abi as rustc_abi; pub mod db; diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/derive_macro.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/derive_macro.rs index 15e68ff95cd..0fa412ad7fa 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/derive_macro.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/derive_macro.rs @@ -12,7 +12,7 @@ use tracing::debug; use crate::{ ExpandError, ExpandResult, MacroCallId, - builtin::quote::{dollar_crate, quote}, + builtin::quote::dollar_crate, db::ExpandDatabase, hygiene::span_with_def_site_ctxt, name::{self, AsName, Name}, diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/fn_macro.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/fn_macro.rs index ec344613761..6fe63f249cd 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/fn_macro.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/fn_macro.rs @@ -19,7 +19,7 @@ use syntax_bridge::syntax_node_to_token_tree; use crate::{ EditionedFileId, ExpandError, ExpandResult, Lookup as _, MacroCallId, - builtin::quote::{WithDelimiter, dollar_crate, quote}, + builtin::quote::{WithDelimiter, dollar_crate}, db::ExpandDatabase, hygiene::{span_with_call_site_ctxt, span_with_def_site_ctxt}, name, diff --git a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs index 70c38d4d7c7..84dd4a24d90 100644 --- a/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs +++ b/src/tools/rust-analyzer/crates/hir-expand/src/builtin/quote.rs @@ -229,8 +229,6 @@ mod tests { use span::{Edition, ROOT_ERASED_FILE_AST_ID, SpanAnchor, SyntaxContext}; use syntax::{TextRange, TextSize}; - use super::quote; - const DUMMY: tt::Span = tt::Span { range: TextRange::empty(TextSize::new(0)), anchor: SpanAnchor { diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/layout/tests.rs b/src/tools/rust-analyzer/crates/hir-ty/src/layout/tests.rs index 523ddad9466..8be5eaca63b 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/layout/tests.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/layout/tests.rs @@ -150,7 +150,7 @@ fn check_size_and_align( ) { let l = eval_goal(ra_fixture, minicore).unwrap(); assert_eq!(l.size.bytes(), size, "size mismatch"); - assert_eq!(l.align.abi.bytes(), align, "align mismatch"); + assert_eq!(l.align.bytes(), align, "align mismatch"); } #[track_caller] @@ -162,7 +162,7 @@ fn check_size_and_align_expr( ) { let l = eval_expr(ra_fixture, minicore).unwrap(); assert_eq!(l.size.bytes(), size, "size mismatch"); - assert_eq!(l.align.abi.bytes(), align, "align mismatch"); + assert_eq!(l.align.bytes(), align, "align mismatch"); } #[track_caller] diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/lib.rs b/src/tools/rust-analyzer/crates/hir-ty/src/lib.rs index 451622ef747..2e59a488e67 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/lib.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/lib.rs @@ -3,45 +3,24 @@ #![cfg_attr(feature = "in-rust-tree", feature(rustc_private))] -#[cfg(feature = "in-rust-tree")] -extern crate rustc_index; +// FIXME: We used to import `rustc_*` deps from `rustc_private` with `feature = "in-rust-tree" but +// temporarily switched to crates.io versions due to hardships that working on them from rustc +// demands corresponding changes on rust-analyzer at the same time. +// For details, see the zulip discussion below: +// https://rust-lang.zulipchat.com/#narrow/channel/185405-t-compiler.2Frust-analyzer/topic/relying.20on.20in-tree.20.60rustc_type_ir.60.2F.60rustc_next_trait_solver.60/with/541055689 -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_index as rustc_index; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_abi; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_abi as rustc_abi; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_pattern_analysis; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_pattern_analysis as rustc_pattern_analysis; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_ast_ir; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_ast_ir as rustc_ast_ir; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_type_ir; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_type_ir as rustc_type_ir; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_next_trait_solver; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_next_trait_solver as rustc_next_trait_solver; -#[cfg(feature = "in-rust-tree")] -extern crate rustc_data_structures as ena; - mod builder; mod chalk_db; mod chalk_ext; diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval.rs b/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval.rs index 3e658cb93ed..fc7d97fff46 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval.rs @@ -2085,7 +2085,7 @@ impl<'db> Evaluator<'db> { if let Some(layout) = self.layout_cache.borrow().get(&ty.to_nextsolver(interner)) { return Ok(layout .is_sized() - .then(|| (layout.size.bytes_usize(), layout.align.abi.bytes() as usize))); + .then(|| (layout.size.bytes_usize(), layout.align.bytes() as usize))); } if let DefWithBodyId::VariantId(f) = locals.body.owner && let Some((AdtId::EnumId(e), _)) = ty.as_adt() @@ -2104,7 +2104,7 @@ impl<'db> Evaluator<'db> { let layout = layout?; Ok(layout .is_sized() - .then(|| (layout.size.bytes_usize(), layout.align.abi.bytes() as usize))) + .then(|| (layout.size.bytes_usize(), layout.align.bytes() as usize))) } /// A version of `self.size_of` which returns error if the type is unsized. `what` argument should @@ -2797,7 +2797,7 @@ impl<'db> Evaluator<'db> { )?; // FIXME: there is some leak here let size = layout.size.bytes_usize(); - let addr = self.heap_allocate(size, layout.align.abi.bytes() as usize)?; + let addr = self.heap_allocate(size, layout.align.bytes() as usize)?; self.write_memory(addr, &result)?; IntervalAndTy { interval: Interval { addr, size }, ty } }; diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval/shim.rs b/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval/shim.rs index f67778b0f12..38480493048 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval/shim.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/mir/eval/shim.rs @@ -767,7 +767,7 @@ impl Evaluator<'_> { "align_of generic arg is not provided".into(), )); }; - let align = self.layout(ty.to_nextsolver(interner))?.align.abi.bytes(); + let align = self.layout(ty.to_nextsolver(interner))?.align.bytes(); destination.write_from_bytes(self, &align.to_le_bytes()[0..destination.size]) } "size_of_val" => { @@ -1431,7 +1431,7 @@ impl Evaluator<'_> { field_types.iter().next_back().unwrap().1.clone().substitute(Interner, subst); let sized_part_size = layout.fields.offset(field_types.iter().count() - 1).bytes_usize(); - let sized_part_align = layout.align.abi.bytes() as usize; + let sized_part_align = layout.align.bytes() as usize; let (unsized_part_size, unsized_part_align) = self.size_align_of_unsized(&last_field_ty, metadata, locals)?; let align = sized_part_align.max(unsized_part_align) as isize; diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/consts.rs b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/consts.rs index 7ebefa76ed0..0b3582051bc 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/consts.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/consts.rs @@ -36,8 +36,6 @@ impl<'db> Const<'db> { internee: kind, flags: flags.flags, outer_exclusive_binder: flags.outer_exclusive_binder, - #[cfg(feature = "in-rust-tree")] - stable_hash: ena::fingerprint::Fingerprint::ZERO, }; Const::new_(interner.db(), InternedWrapperNoDebug(cached)) } diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/predicate.rs b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/predicate.rs index 86545415009..99b1354b633 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/predicate.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/predicate.rs @@ -227,8 +227,6 @@ impl<'db> Predicate<'db> { internee: kind, flags: flags.flags, outer_exclusive_binder: flags.outer_exclusive_binder, - #[cfg(feature = "in-rust-tree")] - stable_hash: ena::fingerprint::Fingerprint::ZERO, }; Predicate::new_(interner.db(), InternedWrapperNoDebug(cached)) } diff --git a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/ty.rs b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/ty.rs index c7a747ade3e..70139e86669 100644 --- a/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/ty.rs +++ b/src/tools/rust-analyzer/crates/hir-ty/src/next_solver/ty.rs @@ -60,8 +60,6 @@ impl<'db> Ty<'db> { internee: kind, flags: flags.flags, outer_exclusive_binder: flags.outer_exclusive_binder, - #[cfg(feature = "in-rust-tree")] - stable_hash: ena::fingerprint::Fingerprint::ZERO, }; Ty::new_(interner.db(), InternedWrapperNoDebug(cached)) } diff --git a/src/tools/rust-analyzer/crates/hir/src/lib.rs b/src/tools/rust-analyzer/crates/hir/src/lib.rs index f8dacf0fb86..17767955d47 100644 --- a/src/tools/rust-analyzer/crates/hir/src/lib.rs +++ b/src/tools/rust-analyzer/crates/hir/src/lib.rs @@ -20,10 +20,6 @@ #![cfg_attr(feature = "in-rust-tree", feature(rustc_private))] #![recursion_limit = "512"] -#[cfg(feature = "in-rust-tree")] -extern crate rustc_type_ir; - -#[cfg(not(feature = "in-rust-tree"))] extern crate ra_ap_rustc_type_ir as rustc_type_ir; mod attrs; @@ -6098,7 +6094,7 @@ impl Layout { } pub fn align(&self) -> u64 { - self.0.align.abi.bytes() + self.0.align.bytes() } pub fn niches(&self) -> Option<u128> { diff --git a/src/tools/rustfmt/src/config/mod.rs b/src/tools/rustfmt/src/config/mod.rs index 6b63108c037..525953bf445 100644 --- a/src/tools/rustfmt/src/config/mod.rs +++ b/src/tools/rustfmt/src/config/mod.rs @@ -516,7 +516,6 @@ mod test { #[allow(dead_code)] mod mock { use super::super::*; - use crate::config_option_with_style_edition_default; use rustfmt_config_proc_macro::config_type; #[config_type] diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs index e275d3042cb..c76b46ec2bf 100644 --- a/src/tools/tidy/src/deps.rs +++ b/src/tools/tidy/src/deps.rs @@ -367,6 +367,7 @@ const PERMITTED_RUSTC_DEPENDENCIES: &[&str] = &[ "expect-test", "fallible-iterator", // dependency of `thorin` "fastrand", + "find-msvc-tools", "flate2", "fluent-bundle", "fluent-langneg", @@ -577,6 +578,7 @@ const PERMITTED_STDLIB_DEPENDENCIES: &[&str] = &[ "rustc-literal-escaper", "shlex", "unwinding", + "vex-sdk", "wasi", "windows-sys", "windows-targets", diff --git a/src/tools/tidy/src/lib.rs b/src/tools/tidy/src/lib.rs index 0bfee93796b..874a758bd9b 100644 --- a/src/tools/tidy/src/lib.rs +++ b/src/tools/tidy/src/lib.rs @@ -167,12 +167,16 @@ pub fn ensure_version_or_cargo_install( bin_name: &str, version: &str, ) -> io::Result<PathBuf> { + let tool_root_dir = build_dir.join("misc-tools"); + let tool_bin_dir = tool_root_dir.join("bin"); + let bin_path = tool_bin_dir.join(bin_name).with_extension(env::consts::EXE_EXTENSION); + // ignore the process exit code here and instead just let the version number check fail. // we also importantly don't return if the program wasn't installed, // instead we want to continue to the fallback. 'ck: { // FIXME: rewrite as if-let chain once this crate is 2024 edition. - let Ok(output) = Command::new(bin_name).arg("--version").output() else { + let Ok(output) = Command::new(&bin_path).arg("--version").output() else { break 'ck; }; let Ok(s) = str::from_utf8(&output.stdout) else { @@ -182,12 +186,10 @@ pub fn ensure_version_or_cargo_install( break 'ck; }; if v == version { - return Ok(PathBuf::from(bin_name)); + return Ok(bin_path); } } - let tool_root_dir = build_dir.join("misc-tools"); - let tool_bin_dir = tool_root_dir.join("bin"); eprintln!("building external tool {bin_name} from package {pkg_name}@{version}"); // use --force to ensure that if the required version is bumped, we update it. // use --target-dir to ensure we have a build cache so repeated invocations aren't slow. @@ -213,7 +215,6 @@ pub fn ensure_version_or_cargo_install( if !cargo_exit_code.success() { return Err(io::Error::other("cargo install failed")); } - let bin_path = tool_bin_dir.join(bin_name).with_extension(env::consts::EXE_EXTENSION); assert!( matches!(bin_path.try_exists(), Ok(true)), "cargo install did not produce the expected binary" |