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Rollup of 10 pull requests#157975

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JonathanBrouwer wants to merge 24 commits into
rust-lang:mainfrom
JonathanBrouwer:rollup-1eD5owz
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Rollup of 10 pull requests#157975
JonathanBrouwer wants to merge 24 commits into
rust-lang:mainfrom
JonathanBrouwer:rollup-1eD5owz

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Successful merges:

r? @ghost

Create a similar rollup

kpreid and others added 24 commits May 25, 2026 16:24
Fixes <rust-lang#147714>.

The changes in `const_to_pat.rs` are entirely to avoid regressing
diagnostic quality, and should not make any difference to what code is
accepted. The change in `compute_applicable_impls_for_diagnostics`
and its callers is entirely to be able to reuse that algorithm for this
purpose.
In rust interger divide by zero is defined to panic, thus the inserted
conditional trap should never trigger as the program should have
panicked if the divisor is zero.

So disable the insertion of the redundant conditional trap.
Co-authored-by: Jesus Checa <101630491+jchecahi@users.noreply.github.com>
* fix(rustc_codegen_ssa): Use cg_operand for Freeze check
* chore: remove unnecessary comment
* test: add test for ssa rval monomorphization issue
* fix: move ssa-rval-monomorphization test
* tweak comment

Co-authored-by: Ralf Jung <post@ralfj.de>
…bjorn3

export symbols: support macos/windows(32/64)

Previously, in the pr rust-lang#150992 , export symbols only supported Linux. The special prefix and suffix rules for some symbols in macOS and Windows were not fully supported. This pull request attempts to clarify these rules and add corresponding support.

Currently, the `undecorate_c_symbol()` function has been added to handle macOS `_` prefixes, Windows x86 calling convention modifiers (cdecl/stdcall/fastcall/vectorcall), and Arm64EC `#` prefixes.

*Update: Handling of Windows C++ mangled symbols has now been added(Linux/macOS don't need).

r? @bjorn3 @petrochenkov
…liasTerm, r=lcnr

Refactor `AliasTy`. `AliasTerm` & `UnevaluatedConst` to use `Alias`

Refactors `AliasTy`, `AliasTerm` & `UnevaluatedConst` to use `Alias`.

Part of rust-lang#156181

r? @lcnr
Add `T: PartialEq` bounds to derived `StructuralPartialEq` impls.

Fixes <rust-lang#147714>.

This is a breaking change to fix a bug, so it will need a crater run if it is to be done at all.

The changes in `const_to_pat.rs` are entirely to avoid regressing diagnostic quality, and should not make any difference to what code is accepted. The changes in `compute_applicable_impls_for_diagnostics` and its callers are entirely to be able to reuse that algorithm for this purpose.

@rustbot label +T-lang
…-symbols, r=petrochenkov

Staticlib rename internal symbols

Follow-up to rust-lang#155338.

`-Zstaticlib-rename-internal-symbols` appends a crate-specific suffix (`_rs{StableCrateId}`) to non-exported symbols, resolving duplicate symbol conflicts when linking multiple Rust staticlibs into the same binary.

The implementation collects all defined `GLOBAL/WEAK` symbol names not in the exported set across all .o files, then renames them by extending the strtab and patching symbol name offsets. When combined with `-Zstaticlib-hide-internal-symbols`, the renamed symbols also receive `STV_HIDDEN` visibility.

Supported on ELF targets (Linux, BSD, etc.) and Apple targets (macOS, iOS, etc.). On unsupported targets (Windows), a warning is emitted and the flag has no effect.

r?@bjorn3 @petrochenkov
…info, r=davidtwco,estebank

Add expansion info to implied bounds

r? @estebank maybe?

cc @davidtwco for implied bound diagnostics

We used to have various fun ways for testing whether a `Sized` bound was implicit or not (usually by checking if the span was equal to the span of a generic parameter). That felt a bit hacky, so I checked what happens if we explicitly mark the span as being desugared. Turns out a lot of diagnostics break. You can see in the diff where I changed things to make them work again.

Then it became clear that we were missing out on various other implied bound sites, and we just got all of them basically for free now.

I think there are various other good refactorings we can do (probably not special casing `Sized` and not special casing implied bound desugarings, but just reporting all desugarings), but for now this PR is in a state where I'd rather merge it than add more to it
…-vec, r=oli-obk

constify `TryFrom<Vec>` for array

Related issues rust-lang#79597, rust-lang#143773, rust-lang#133214

this makes `Vec` `const Destruct` along the way.
…80, r=lcnr

diagnostics: point to coroutine body on higher-ranked auto trait errors

Fixes rust-lang#155880

When encountering a higher-ranked auto trait bound error involving a coroutine or async function,the trait solver previously used the span of the outermost cause (eg. `spawn(...)` or `is_send(...)`).

This PR modifies the `TraitPlaceholderMismatch` formatting logic to walk down the `ObligationCauseCode` chain.If the obligation originates from a `ty::Coroutine` or `ty::CoroutineWitness`, it extracts that specific span, providing a much more accurate underline for the user.

#### Before:
```text
error: implementation of `Send` is not general enough
  --> src/main.rs:25:5
   |
25 |     is_send(outer())
   |     ^^^^^^^^^^^^^^^^ implementation of `Send` is not general enough
```

#### After:
```text
error: implementation of `Send` is not general enough
  --> src/main.rs:13:74
   |
13 |   async fn inner<'a, T: Trait + 'a>(_: T, x: T::Assoc<'a>) -> T::Assoc<'a> {
   |  __________________________________________________________________________^
14 | |     std::future::ready(x).await
15 | | }
   | |_^ implementation of `Send` is not general enough
```
…=folkertdev

mips: set llvm_args -mno-check-zero-division for all mips targets

In rust interger divide by zero is defined to panic, thus the inserted conditional trap should never trigger as the program should have panicked if the divisor is zero.

So disable the insertion of the redundant conditional trap.
… r=RalfJung

fix(rustc_codegen_ssa): Use cg_operand for Freeze check

Hi, this is my first contribution, so please forgive my incorrect conventions...
I found that rust-lang#157922 is simple issue.

Fixes rust-lang#157922

## Cause of issue

In `rustc_codegen_ssa/src/mir/rvalue.rs`, `Freeze` check is called for non-monomorphized operand pointee type of `RValue`.
Before this method call, there is already called `codegen_operand` method for the operand, so I use this for `Freeze` check.
…=JonathanBrouwer

doc: Document `-Zlint-rust-version`

Followup to rust-lang#157707
Tracking issue: rust-lang#157574

r? JonathanBrouwer
@rust-bors rust-bors Bot added the rollup A PR which is a rollup label Jun 16, 2026
@rustbot rustbot added A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver) labels Jun 16, 2026
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@bors r+ rollup=never p=5

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rust-bors Bot commented Jun 16, 2026

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📌 Commit 8b7720d has been approved by JonathanBrouwer

It is now in the queue for this repository.

@rust-bors rust-bors Bot added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 16, 2026
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rust-bors Bot commented Jun 16, 2026

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⌛ Testing commit 8b7720d with merge c07313c...

Workflow: https://github.com/rust-lang/rust/actions/runs/27629441410

rust-bors Bot pushed a commit that referenced this pull request Jun 16, 2026
…uwer

Rollup of 10 pull requests

Successful merges:

 - #155535 (export symbols: support macos/windows(32/64))
 - #156538 (Refactor `AliasTy`. `AliasTerm` & `UnevaluatedConst` to use `Alias`)
 - #156807 (Add `T: PartialEq` bounds to derived `StructuralPartialEq` impls.)
 - #156950 (Staticlib rename internal symbols)
 - #157702 (Add expansion info to implied bounds)
 - #155616 (constify `TryFrom<Vec>` for array)
 - #156226 (diagnostics: point to coroutine body on higher-ranked auto trait errors)
 - #157873 (mips: set llvm_args -mno-check-zero-division for all mips targets)
 - #157953 (fix(rustc_codegen_ssa): Use cg_operand for Freeze check)
 - #157958 (doc: Document `-Zlint-rust-version`)
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A-run-make Area: port run-make Makefiles to rmake.rs rollup A PR which is a rollup S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. WG-trait-system-refactor The Rustc Trait System Refactor Initiative (-Znext-solver)

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