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It wants an owned path, so pass an owned path
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replace `GenericArg` with `Term` where applicable
r? types
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r=fee1-dead
Simply try to unpeel AsyncFnKindHelper goal in `emit_specialized_closure_kind_error`
Tweak the handling of `AsyncFnKindHelper` goals in `emit_specialized_closure_kind_error` to not be so special-casey, and just try to unpeel one or two layers of obligation causes to get to their underlying `AsyncFn*` goal.
Fixes https://github.com/rust-lang/rust/issues/140292
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Remove redundant check
We still check for `rustc_on_unimplemented` on implementations, but this functionality was removed in https://github.com/rust-lang/rust/pull/139091, since then it always returns `Ok` when called with a non-trait defid.
https://github.com/rust-lang/rust/blob/b4c8b0c3f0533bb342a4873ff59bdad3883ab8e3/compiler/rustc_trait_selection/src/error_reporting/traits/on_unimplemented.rs#L557-L564
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transmutability: Support char, NonZeroXxx
Note that `NonZero` support is not wired up, as the author encountered
bugs while attempting this. A future commit will wire up `NonZero`
support.
r? ````@jswrenn````
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Rollup of 8 pull requests
Successful merges:
- #139865 (Stabilize proc_macro::Span::{start,end,line,column}.)
- #140086 (If creating a temporary directory fails with permission denied then retry with backoff)
- #140216 (Document that "extern blocks must be unsafe" in Rust 2024)
- #140253 (Add XtensaAsmPrinter)
- #140272 (Improve error message for `||` (or) in let chains)
- #140305 (Track per-obligation recursion depth only if there is inference in the new solver)
- #140306 (handle specialization in the new trait solver)
- #140308 (stall generator witness obligations: add regression test)
r? `@ghost`
`@rustbot` modify labels: rollup
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handle specialization in the new trait solver
fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/187
also fixes the regression in `plonky2_field` from https://github.com/rust-lang/trait-system-refactor-initiative/issues/188
cc https://github.com/rust-lang/rust/pull/111994
r? ```@compiler-errors```
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Track per-obligation recursion depth only if there is inference in the new solver
Track how many times an obligation has been processed in the fulfillment context by reusing its recursion depth, and only overflow if a singular (root) goal hits the limit.
This also fixes a (probably theoretical at this point) problem where we don't detect pseudo-hangs across `select_where_possible` calls.
fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/186
r? lcnr
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Improve error message for `||` (or) in let chains
**Description**
This PR improves the error message when using `||` in an if let chain expression, addressing #140263.
**Changes**
1. Creates a dedicated error message specifically for `||` usage in let chains
2. Points the primary span directly at the `||` operator
3. Removes confusing secondary notes about "let statements" and unsupported contexts
5. Adds UI tests verifying the new error message and valid cases
**Before**
```rust
error: expected expression, found let statement
--> src/main.rs:2:8
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2 | if let true = true || false {}
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= note: only supported directly in conditions of if and while expressions
note: || operators are not supported in let chain expressions
--> src/main.rs:2:24
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2 | if let true = true || false {}
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```
**After**
```rust
error: `||` operators are not supported in let chain conditions
--> src/main.rs:2:24
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2 | if let true = true || false {}
| ^^
```
**Implementation details**
1. Added new `OrInLetChain` diagnostic in errors.rs
2. Modified `CondChecker` in expr.rs to prioritize the `||` error
3. Updated fluent message definitions to use clearer wording
**Related issue**
Fixes #140263
cc ```@ehuss``` (issue author)
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Add XtensaAsmPrinter
See https://github.com/rust-lang/rust/pull/133601. The PR was closed because it required LLVM 19 in CI added with (https://github.com/rust-lang/rust/commit/12167d7064597993355e41d3a8c20654bccaf0be)
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If creating a temporary directory fails with permission denied then retry with backoff
On Windows, if creating a temporary directory fails with permission denied then use a retry/backoff loop. This hopefully fixes a recuring error in our CI.
cc ```@jieyouxu,``` https://github.com/rust-lang/rust/issues/133959
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[compiletest] Parallelize test discovery
Certain filesystems are slow to service individual read requests, but can service many in parallel. This change brings down the time to run a single cached test on one of those filesystems from 40s to about 8s.
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emit_specialized_closure_kind_error
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r=GuillaumeGomez
Subtree update cg_gcc 2025/04/25
r? GuillaumeGomez
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In the AST the "then" block is represented as a `Block`. In HIR the
"then" block is represented as an `Expr` that happens to always be.
`ExprKind::Block`. By deconstructing the `ExprKind::Block` to extract
the block within, things print properly.
For `issue-82392.rs`, note that we no longer print a type after the
"then" block. This is good, it now matches how we don't print a type for
the "else" block. (Well, we do print a type after the "else" block, but
it's for the whole if/else.)
Also tighten up some of the pattern matching -- these block expressions
within if/else will never have labels.
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Note that `NonZero` support is not wired up, as the author encountered
bugs while attempting this. A future commit will wire up `NonZero`
support.
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Rollup of 8 pull requests
Successful merges:
- #137683 (Add a tidy check for GCC submodule version)
- #138968 (Update the index of Result to make the summary more comprehensive)
- #139572 (docs(std): mention const blocks in const keyword doc page)
- #140152 (Unify the format of rustc cli flags)
- #140193 (fix ICE in `#[naked]` attribute validation)
- #140205 (Tidying up UI tests [2/N])
- #140284 (remove expect() in `unnecessary_transmutes`)
- #140290 (rustdoc: fix typo change from equivelent to equivalent)
r? `@ghost`
`@rustbot` modify labels: rollup
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uwu :3
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Allow out of order dep graph node encoding
This allows out of order dep graph node encoding by also encoding the index instead of using the file node order as the index.
`MemEncoder` is also brought back to life and used for encoding.
Both of these are done to enable thread-local encoding of dep graph nodes.
This is based on https://github.com/rust-lang/rust/pull/139636.
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remove expect() in `unnecessary_transmutes`
removes expect() from #136083 and fixes #140277
includes regression test
r? lcnr
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fix ICE in `#[naked]` attribute validation
fixes https://github.com/rust-lang/rust/issues/140082
The comment here https://github.com/rust-lang/rust/pull/139615/files#r2040684192 is relevant, a better way to print the full path would be nice. If there's an issue I should `FIXME` this with let me know.
r? `@jdonszelmann`
cc `@nnethercote` https://github.com/rust-lang/rust/pull/139615
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Unify the format of rustc cli flags
As mentioned in #140102, I unified the format of rustc CLI flags.
I use the following rules:
1. `<param>`: Indicates a required parameter
2. `[param]`: Indicates an optional parameter
3. `|`: Indicates a mutually exclusive option
4. `*`: a list element with description
Current output:
```bash
Usage: rustc [OPTIONS] INPUT
Options:
-h, --help Display this message
--cfg <SPEC> Configure the compilation environment.
SPEC supports the syntax `<NAME>[="<VALUE>"]`.
--check-cfg <SPEC>
Provide list of expected cfgs for checking
-L [<KIND>=]<PATH> Add a directory to the library search path. The
optional KIND can be one of
<dependency|crate|native|framework|all> (default:
all).
-l [<KIND>[:<MODIFIERS>]=]<NAME>[:<RENAME>]
Link the generated crate(s) to the specified native
library NAME. The optional KIND can be one of
<static|framework|dylib> (default: dylib).
Optional comma separated MODIFIERS
<bundle|verbatim|whole-archive|as-needed>
may be specified each with a prefix of either '+' to
enable or '-' to disable.
--crate-type <bin|lib|rlib|dylib|cdylib|staticlib|proc-macro>
Comma separated list of types of crates
for the compiler to emit
--crate-name <NAME>
Specify the name of the crate being built
--edition <2015|2018|2021|2024|future>
Specify which edition of the compiler to use when
compiling code. The default is 2015 and the latest
stable edition is 2024.
--emit <TYPE>[=<FILE>]
Comma separated list of types of output for the
compiler to emit.
Each TYPE has the default FILE name:
* asm - CRATE_NAME.s
* llvm-bc - CRATE_NAME.bc
* dep-info - CRATE_NAME.d
* link - (platform and crate-type dependent)
* llvm-ir - CRATE_NAME.ll
* metadata - libCRATE_NAME.rmeta
* mir - CRATE_NAME.mir
* obj - CRATE_NAME.o
* thin-link-bitcode - CRATE_NAME.indexing.o
--print <INFO>[=<FILE>]
Compiler information to print on stdout (or to a file)
INFO may be one of
<all-target-specs-json|calling-conventions|cfg|check-cfg|code-models|crate-name|crate-root-lint-levels|deployment-target|file-names|host-tuple|link-args|native-static-libs|relocation-models|split-debuginfo|stack-protector-strategies|supported-crate-types|sysroot|target-cpus|target-features|target-libdir|target-list|target-spec-json|tls-models>.
-g Equivalent to -C debuginfo=2
-O Equivalent to -C opt-level=3
-o <FILENAME> Write output to FILENAME
--out-dir <DIR> Write output to compiler-chosen filename in DIR
--explain <OPT> Provide a detailed explanation of an error message
--test Build a test harness
--target <TARGET>
Target triple for which the code is compiled
-A, --allow <LINT> Set lint allowed
-W, --warn <LINT> Set lint warnings
--force-warn <LINT>
Set lint force-warn
-D, --deny <LINT> Set lint denied
-F, --forbid <LINT> Set lint forbidden
--cap-lints <LEVEL>
Set the most restrictive lint level. More restrictive
lints are capped at this level
-C, --codegen <OPT>[=<VALUE>]
Set a codegen option
-V, --version Print version info and exit
-v, --verbose Use verbose output
Additional help:
-C help Print codegen options
-W help Print 'lint' options and default settings
-Z help Print unstable compiler options
--help -v Print the full set of options rustc accepts
```
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subtree-update_cg_gcc_2025-04-25
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Rollup of 8 pull requests
Successful merges:
- #137653 (Deprecate the unstable `concat_idents!`)
- #138957 (Update the index of Option to make the summary more comprehensive)
- #140006 (ensure compiler existance of tools on the dist step)
- #140143 (Move `sys::pal::os::Env` into `sys::env`)
- #140202 (Make #![feature(let_chains)] bootstrap conditional in compiler/)
- #140236 (norm nested aliases before evaluating the parent goal)
- #140257 (Some drive-by housecleaning in `rustc_borrowck`)
- #140278 (Don't use item name to look up associated item from trait item)
r? `@ghost`
`@rustbot` modify labels: rollup
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The current alignment check does not include checks for creating
misaligned references from raw pointers, which is now added in this
patch.
When inserting the check we need to be careful with references to
field projections (e.g. `&(*ptr).a`), in which case the resulting
reference must be aligned according to the field type and not the
type of the pointer.
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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On Windows, if creating a temporary directory fails with permission denied then use a retry/backoff loop. This hopefully fixes a recuring error in our CI.
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Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>
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Rollup of 8 pull requests
Successful merges:
- #137096 (Stabilize flags for doctest cross compilation)
- #140148 (CI: use aws codebuild for job dist-arm-linux)
- #140187 ([AIX] Handle AIX dynamic library extensions within c-link-to-rust-dylib run-make test)
- #140196 (Improved diagnostics for non-primitive cast on non-primitive types (`Arc`, `Option`))
- #140210 (Work around cygwin issue on condvar timeout)
- #140213 (mention about `x.py setup` in `INSTALL.md`)
- #140229 (`DelimArgs` tweaks)
- #140248 (Fix impl block items indent)
r? `@ghost`
`@rustbot` modify labels: rollup
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Don't use item name to look up associated item from trait item
This fix should be self-justifying b/c the fact that we were using identifiers here was kinda sus anyways, esp b/c we have a failproof way of doing the comparison :) I'll leave some info about why this repro needs a macro.
Fixes https://github.com/rust-lang/rust/issues/140259
r? `@nnethercote`
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Some drive-by housecleaning in `rustc_borrowck`
This commit picks up a few odd ends discovered during the work on #130227. It adds some documentation and renames a few methods with too generic names to describe what they actually do. It also adds some debug output that was helpful during bug hunting and generally cleans up a few things (for my values of "clean").
r? lcnr
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norm nested aliases before evaluating the parent goal
see the explanation of the underlying issue in tests/ui/traits/next-solver/normalize/eager-norm-pre-normalizes-to.rs.
This is also the cause of https://github.com/rust-lang/trait-system-refactor-initiative/issues/184, fixing the overflow errors with the new solver. I did not add any tests based on it directly as relying on that behavior to cause recursion limit shenanigans feels fragile. Thanks `@Nadrieril` for minimizing the issue [on zulip](https://rust-lang.zulipchat.com/#narrow/channel/364551-t-types.2Ftrait-system-refactor/topic/typenum.20.602.20.2F.201.60.20overflow.20error/with/513993621).
r? `@compiler-errors`
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Make #![feature(let_chains)] bootstrap conditional in compiler/
Let chains have been stabilized recently in #132833, so we can remove the gating from our uses in the compiler (as the compiler uses edition 2024).
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Move `sys::pal::os::Env` into `sys::env`
Although `Env` (as `Vars`), `Args`, path functions, and OS constants are publicly exposed via `std::env`, their implementations are each self-contained. Keep them separate in `std::sys` and make a new module, `sys::env`, for `Env`.
Also fix `unsafe_op_in_unsafe_fn` for Unix and update the `!DynSend` and `!DynSync` impls which had grown out of sync with the platforms (see #48005 for discussion on that).
r? joboet
Tracked in #117276.
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By removing some of the over-indenting. AST pretty printing now looks
correct. HIR pretty printing is better, but still over-indents some.
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Indents for `cbox` and `ibox` are 0 or `INDENT_UNIT` (4) except for a
couple of places which are `INDENT_UNIT - 1` for no clear reason.
This commit changes the three space indents to four spaces.
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