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On tests that specify `--color=always` emit SVG file with stderr output
Leverage `anstyle-svg`, as `cargo` does now, to emit `.svg` files instead of `.stderr` files for tests that explicitly enable color output. This will make reviewing changes to the graphical output of tests much more human friendly.
<img src="https://raw.githubusercontent.com/rust-lang/rust/b4bdb56f86e136ca63bf71dca3034200c6c25900/tests/ui/error-emitter/highlighting.svg">
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Leverage `anstyle-svg`, as `cargo` does now, to emit `.svg` files
instead of `.stderr` files for tests that explicitly enable color
output. This will make reviewing changes to the graphical output of
tests much more human friendly.
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Adds initial support for DataFlowSanitizer to the Rust compiler. It
currently supports `-Zsanitizer-dataflow-abilist`. Additional options
for it can be passed to LLVM command line argument processor via LLVM
arguments using `llvm-args` codegen option (e.g.,
`-Cllvm-args=-dfsan-combine-pointer-labels-on-load=false`).
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rcvalle:rust-cfi-move-ui-tests-to-sanitizer-directory, r=compiler-errors
Move sanitizer ui tests to sanitizer directory
Moves the sanitizer ui tests to the sanitizer directory and removes the sanitizer prefix from tests file names similarly to how the sanitizer codegen tests are organized.
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Add tidy check for .stderr/.stdout files for non-existent test revisions
Closes #77498.
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Moves the sanitizer ui tests to the sanitizer directory and removes the
sanitizer prefix from tests file names similarly to how the sanitizer
codegen tests are organized.
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Safe Transmute: Revise safety analysis
This PR migrates `BikeshedIntrinsicFrom` to a simplified safety analysis (described [here](https://github.com/rust-lang/project-safe-transmute/issues/15)) that does not rely on analyzing the visibility of types and fields.
The revised analysis treats primitive types as safe, and user-defined types as potentially carrying safety invariants. If Rust gains explicit (un)safe fields, this PR is structured so that it will be fairly easy to thread support for those annotations into the analysis.
Notably, this PR removes the `Context` type parameter from `BikeshedIntrinsicFrom`. Most of the files changed by this PR are just UI tests tweaked to accommodate the removed parameter.
r? `@compiler-errors`
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Migrate to a simplified safety analysis that does not use visibility.
Closes https://github.com/rust-lang/project-safe-transmute/issues/15
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It looks like LLD will detect object files being either 32 or 64-bit
depending on any memory present. LLD will additionally reject 32-bit
objects during a 64-bit link. Previously metadata objects did not have
any memories in them which led LLD to conclude they were 32-bit objects
which broke 64-bit targets for wasm.
This commit fixes this by ensuring that for 64-bit targets there's a
memory object present to get LLD to detect it's a 64-bit target.
Additionally this commit moves away from a hand-crafted wasm encoder to
the `wasm-encoder` crate on crates.io as the complexity grows for the
generated object file.
Closes #121460
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Move as many tests from tests/ui/numbers-arithmetic to tests/ui/lint as possible
Fixes #119851 , and also consolidates as many individual tests as possible from numbers-arithmetic. I might have moved the tests in too aggressively, so let me know
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Rollup of 7 pull requests
Successful merges:
- #121208 (Convert `delayed_bug`s to `bug`s.)
- #121288 (make rustc_expand translatable)
- #121304 (Add docs for extension proc-macro)
- #121328 (Make --verbose imply -Z write-long-types-to-disk=no)
- #121338 (Downgrade ambiguous_wide_pointer_comparisons suggestions to MaybeIncorrect)
- #121361 (diagnostic items for legacy numeric modules)
- #121375 (Print proper relative path for descriptive name check)
r? `@ghost`
`@rustbot` modify labels: rollup
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The goal of this commit is to remove warnings using LLVM tip-of-tree
`wasm-ld`. In llvm/llvm-project#78658 the `wasm-ld` LLD driver no longer
looks at archive indices and instead looks at all the objects in
archives. Previously `lib.rmeta` files were simply raw rustc metadata
bytes, not wasm objects, meaning that `wasm-ld` would emit a warning
indicating so.
WebAssembly targets previously passed `--fatal-warnings` to `wasm-ld` by
default which meant that if Rust were to update to LLVM 18 then all wasm
targets would not work. This immediate blocker was resolved in
rust-lang/rust#120278 which removed `--fatal-warnings` which enabled a
theoretical update to LLVM 18 for wasm targets. This current state is
ok-enough for now because rustc squashes all linker output by default if
it doesn't fail. This means, for example, that rustc squashes all the
linker warnings coming out of `wasm-ld` about `lib.rmeta` files with
LLVM 18. This again isn't a pressing issue because the information is
all hidden, but it runs the risk of being annoying if another linker
error were to happen and then the output would have all these unrelated
warnings that couldn't be fixed.
Thus, this PR comes into the picture. The goal of this PR is to resolve
these warnings by using the WebAssembly object file format on wasm
targets instead of using raw rustc metadata. When I first implemented
the rlib-in-objects scheme in #84449 I remember either concluding that
`wasm-ld` would either include the metadata in the output or I thought
we didn't have to do anything there at all. I think I was wrong on both
counts as `wasm-ld` does not include the metadata in the final output
unless the object is referenced and we do actually need to do something
to resolve these warnings.
This PR updates the object file format containing rustc metadata on
WebAssembly targets to be an actual WebAssembly file. This enables the
`wasm` feature of the `object` crate to be able to read the custom
section in the same manner as other platforms, but currently `object`
doesn't support writing wasm object files so a handwritten encoder is
used instead.
The only caveat I know of with this is that if `wasm-ld` does indeed
look at the object file then the metadata will be included in the final
output. I believe the only thing that could cause that at this time is
`--whole-archive` which I don't think is passed for rlibs. I would
clarify that I'm not 100% certain about this, however.
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r=compiler-errors
Reimpl meaningful test name lint MCP658
This reintroduces the tidy rule originally proposed in https://github.com/rust-lang/rust/pull/113583 that then became an MCP in https://github.com/rust-lang/compiler-team/issues/658 which eventually surfaced a quite-reasonable request for a diagnostic enhancement. I have added that to the rule. It produces output like this:
```
tidy error: file `ui/unsized/issue-115809.rs` must begin with a descriptive name, try `{reason}-issue-115809.rs`
tidy error: file `ui/unsized/issue-115203.rs` must begin with a descriptive name, try `{reason}-issue-115203.rs`
tidy error: file `ui/privacy/issue-113860-2.rs` must begin with a descriptive name, try `{reason}-issue-113860.rs`
tidy error: file `ui/privacy/issue-117997.rs` must begin with a descriptive name, try `{reason}-issue-117997.rs`
tidy error: file `ui/privacy/issue-119463.rs` must begin with a descriptive name, try `{reason}-issue-119463.rs`
tidy error: file `ui/privacy/auxiliary/issue-117997.rs` must begin with a descriptive name, try `{reason}-issue-117997.rs`
tidy error: file `ui/privacy/auxiliary/issue-119463-extern.rs` must begin with a descriptive name, try `{reason}-issue-119463.rs`
tidy error: file `ui/privacy/issue-113860-1.rs` must begin with a descriptive name, try `{reason}-issue-113860.rs`
tidy error: file `ui/privacy/issue-113860.rs` must begin with a descriptive name, try `{reason}-issue-113860.rs`
tidy error: file `ui/const-generics/generic_const_exprs/const_kind_expr/issue_114151.rs` must begin with a descriptive name, try `{reason}-issue-114151.rs`
tidy error: file `ui/did_you_mean/issue-114112.rs` must begin with a descriptive name, try `{reason}-issue-114112.rs`
tidy error: file `ui/did_you_mean/issue-105225.rs` must begin with a descriptive name, try `{reason}-issue-105225.rs`
tidy error: file `ui/did_you_mean/issue-105225-named-args.rs` must begin with a descriptive name, try `{reason}-issue-105225.rs`
```
You get the idea.
There are some tests which merely would require reordering of the name according to the rule. I could modify the diagnostic further to identify those, but doing such would make it prone to bad suggestions. I have opted to trust contributors to recognize the diagnostic is robotic, as the pattern we are linting on is easier to match if we do not speculate on what parts of the name are meaningful: sometimes a word is a reason, but sometimes it is a mere "tag", such as with a pair like:
- issue-314159265-blue.rs
- issue-314159265-red.rs
Starting them with `red-` and `blue-` means they do not sort together, despite being related, and the color names are still not very descriptive. Recognizing a good name is an open-ended task, though this pair might be:
- colored-circle-gen-blue.rs
- colored-circle-gen-red.rs
Deciding exactly *how* to solve this is not the business of tidy, only recognizing a what.
r? `@compiler-errors`
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Implements RFC 3509.
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bump some deps
First commit dedupes darling* crates and remove one more syn 1.* dep
Second one bumps windows crate to 0.52
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~130 new entries, depending on how you count, with the rest being sorting churn.
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As the reason for tidy failing the test name may seem slightly opaque,
provide a suggestion on how to rename the file.
There are some tests which merely would require reordering of the name
according to the rule. I could modify the diagnostic further to identify
those, but doing such would make it prone to bad suggestions. I have opted
to trust contributors to recognize the diagnostic is robotic, as the
pattern we are linting on is easier to match if we do not speculate on what
parts of the name are meaningful: sometimes a word is a reason, but
sometimes it is a mere "tag", such as with a pair like:
issue-314159265-blue.rs
issue-314159265-red.rs
Starting them with `red-` and `blue-` means they do not sort together,
despite being related, and the color names are still not very descriptive.
Recognizing a good name is an open-ended task, though this pair might be:
colored-circle-gen-blue.rs
colored-circle-gen-red.rs
Deciding exactly how to solve this is not the business of tidy,
only recognizing a what.
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This reverts commit 686b3debfc19f124c9c2ec8a856c06892f6086a1.
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yes, once_cell better, but ...
this reduces from
==31349== Total: 1,365,199,543 bytes in 4,774,213 blocks
==31349== At t-gmax: 10,975,708 bytes in 66,093 blocks
==31349== At t-end: 2,880,947 bytes in 12,332 blocks
==31349== Reads: 5,210,008,956 bytes
==31349== Writes: 1,280,920,127 bytes
to
==47796== Total: 821,467,407 bytes in 3,955,595 blocks
==47796== At t-gmax: 10,976,209 bytes in 66,100 blocks
==47796== At t-end: 2,944,016 bytes in 12,490 blocks
==47796== Reads: 4,788,959,023 bytes
==47796== Writes: 975,493,639 bytes
miropt-test-tools: remove regex usage
this removes regex usage and slightly refactors ext stripping in one case
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Move some tests
r? `@petrochenkov`
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Remove `ffi_returns_twice` feature
The [tracking issue](https://github.com/rust-lang/rust/issues/58314) and [RFC](https://github.com/rust-lang/rfcs/pull/2633) have been closed for a couple of years.
There is also an attribute gate in R-A which should be removed if this lands.
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Update stdarch submodule
Splits up #27731 into multiple tracking issues.
Closes #27731
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Subtree update of `rust-analyzer`
r? ghost
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Issue tests numbered 1920, 3668, 5997, 23302, 32122, 40510, 57741, 71676, and 76077 were moved to relevant better-named subdirectories. ISSUES_ENTRY_LIMIT was adjusted to match new number of files and FIXME note was expanded.
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Error codes are integers, but `String` is used everywhere to represent
them. Gross!
This commit introduces `ErrCode`, an integral newtype for error codes,
replacing `String`. It also introduces a constant for every error code,
e.g. `E0123`, and removes the `error_code!` macro. The constants are
imported wherever used with `use rustc_errors::codes::*`.
With the old code, we have three different ways to specify an error code
at a use point:
```
error_code!(E0123) // macro call
struct_span_code_err!(dcx, span, E0123, "msg"); // bare ident arg to macro call
\#[diag(name, code = "E0123")] // string
struct Diag;
```
With the new code, they all use the `E0123` constant.
```
E0123 // constant
struct_span_code_err!(dcx, span, E0123, "msg"); // constant
\#[diag(name, code = E0123)] // constant
struct Diag;
```
The commit also changes the structure of the error code definitions:
- `rustc_error_codes` now just defines a higher-order macro listing the
used error codes and nothing else.
- Because that's now the only thing in the `rustc_error_codes` crate, I
moved it into the `lib.rs` file and removed the `error_codes.rs` file.
- `rustc_errors` uses that macro to define everything, e.g. the error
code constants and the `DIAGNOSTIC_TABLES`. This is in its new
`codes.rs` file.
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Bump some deps with syn 1.0 dependencies
cc #109302
`cargo update`ing `unic-langid` and `object` removes two dependencies on Syn 1.0.
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llvm: change data layout bug to an error and make it trigger more
Fixes #33446.
Don't skip the inconsistent data layout check for custom LLVMs or non-built-in targets.
With #118708, all targets will have a simple test that would trigger this error if LLVM's data layouts do change - so data layouts would be corrected during the LLVM upgrade. Therefore, with builtin targets, this error won't happen with our LLVM because each target will have been confirmed to work. With non-builtin targets, this error is probably useful to have because you can change the data layout in your target and if it is wrong then that could lead to bugs.
When using a custom LLVM, the same justification makes sense for non-builtin targets as with our LLVM, the user can update their target to match their LLVM and that's probably a good thing to do. However, with a custom LLVM, the user cannot change the builtin target data layouts if they don't match - though given that the compiler's data layout is used for layout computation and a bunch of other things - you could get some bugs because of the mismatch and probably want to know about that. I'm not sure if this is something that people do and is okay, but I doubt it?
`CFG_LLVM_ROOT` was also always set during local development with `download-ci-llvm` so this bug would never trigger locally.
In #33446, two points are raised:
- In the issue itself, changing this from a `bug!` to a proper error is what is suggested, by using `isCompatibleDataLayout` from LLVM, but that function still just does the same thing that we do and check for equality, so I've avoided the additional code necessary to do that FFI call.
- `@Mark-Simulacrum` suggests a different check is necessary to maintain backwards compatibility with old LLVM versions. I don't know how often this comes up, but we can do that with some simple string manipulation + LLVM version checks as happens already for LLVM 17 just above this diff.
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Don't skip the inconsistent data layout check for custom LLVMs.
With #118708, all targets will have a simple test that would trigger this
check if LLVM's data layouts do change - so data layouts would be
corrected during the LLVM upgrade. Therefore, with builtin targets, this
check won't trigger with our LLVM because each target will have been
confirmed to work. With non-builtin targets, this check is probably
useful to have because you can change the data layout in your target and
if its wrong then that could lead to bugs.
When using a custom LLVM, the same justification makes sense for
non-builtin targets as with our LLVM, the user can update their target to
match their LLVM and that's probably a good thing to do. However, with
a custom LLVM, the user cannot change the builtin target data layouts if
they don't match - though given that the compiler's data layout is used
for layout computation and a bunch of other things - you could get some
bugs because of the mismatch and probably want to know about that.
`CFG_LLVM_ROOT` was also always set during local development with
`download-ci-llvm` so this bug would never trigger locally.
Signed-off-by: David Wood <david@davidtw.co>
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