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<code>mul_add</code> on <code>*-pc-windows-gnu</code> returns incorrect results

A-floating-pointArea: Floating point numbers and arithmeticArea: Floating point numbers and arithmetic

C-bugCategory: This is a bug.Category: This is a bug.

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

O-windows-gnuToolchain: GNU, Operating system: WindowsToolchain: GNU, Operating system: Windows

P-mediumMedium priorityMedium priority

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-libsRelevant to the library team, which will review and decide on the PR/issue.Relevant to the library team, which will review and decide on the PR/issue.

Status: Open.

#140515 In rust-lang/rust;

· beetrees opened on Apr 30, 2025

incompletely relating alias args is unsound during vtable creation

fixed-by-next-solverFixed by the next-generation trait solver, `-Znext-solver`.Fixed by the next-generation trait solver, `-Znext-solver`.

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-mediumMedium priorityMedium priority

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#140212 In rust-lang/rust;

· lcnr opened on Apr 23, 2025

Compiler hangs during execution

A-coherenceArea: CoherenceArea: Coherence

A-trait-systemArea: Trait systemArea: Trait system

C-bugCategory: This is a bug.Category: This is a bug.

fixed-by-next-solverFixed by the next-generation trait solver, `-Znext-solver`.Fixed by the next-generation trait solver, `-Znext-solver`.

I-hangIssue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc.Issue: The compiler never terminates, due to infinite loops, deadlock, livelock, etc.

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

S-has-bisectionStatus: a bisection has been found for this issueStatus: a bisection has been found for this issue

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#139197 In rust-lang/rust;

· jjl9807 opened on Apr 1, 2025

[bug] When I Use tauri-plugin-http and reqwest either, I got a panic

A-async-awaitArea: Async & AwaitArea: Async & Await

A-auto-traitsArea: auto traits (e.g., `auto trait Send {}`)Area: auto traits (e.g., `auto trait Send {}`)

A-coercionsArea: implicit and explicit `expr as Type` coercionsArea: implicit and explicit `expr as Type` coercions

A-dyn-traitArea: trait objects, vtable layoutArea: trait objects, vtable layout

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

S-has-bisectionStatus: a bisection has been found for this issueStatus: a bisection has been found for this issue

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#138274 In rust-lang/rust;

· Wan9xy opened on Mar 9, 2025

Iterator performance regression 1.81 -&gt; 1.82

C-bugCategory: This is a bug.Category: This is a bug.

P-mediumMedium priorityMedium priority

regression-untriagedUntriaged performance or correctness regression.Untriaged performance or correctness regression.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137727 In rust-lang/rust;

· Sunshine40 opened on Feb 27, 2025

internal compiler error: two identical projections

A-patternsRelating to patterns and pattern matchingRelating to patterns and pattern matching

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.

S-has-mcveStatus: A Minimal Complete and Verifiable Example has been found for this issueStatus: A Minimal Complete and Verifiable Example has been found for this issue

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137467 In rust-lang/rust;

· HomelikeBrick42 opened on Feb 23, 2025

Bad codegen for widen followed by ARM <code>vdupq_n_*</code>

A-SIMDArea: SIMD (Single Instruction Multiple Data)Area: SIMD (Single Instruction Multiple Data)

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

O-AArch64Armv8-A or later processors in AArch64 modeArmv8-A or later processors in AArch64 mode

P-mediumMedium priorityMedium priority

regression-from-stable-to-stablePerformance or correctness regression from one stable version to another.Performance or correctness regression from one stable version to another.

S-has-bisectionStatus: a bisection has been found for this issueStatus: a bisection has been found for this issue

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137407 In rust-lang/rust;

· CatsAreFluffy opened on Feb 22, 2025

Performance regression in 1.84 for inline-able function in closure

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

C-bugCategory: This is a bug.Category: This is a bug.

C-optimizationCategory: An issue highlighting optimization opportunities or PRs implementing suchCategory: An issue highlighting optimization opportunities or PRs implementing such

P-mediumMedium priorityMedium priority

regression-untriagedUntriaged performance or correctness regression.Untriaged performance or correctness regression.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137273 In rust-lang/rust;

· findepi opened on Feb 19, 2025

ICE: <code>assertion failed: layout.is_sized()</code>

C-bugCategory: This is a bug.Category: This is a bug.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

P-mediumMedium priorityMedium priority

regression-from-stable-to-betaPerformance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.

T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.

Status: Open.

#137186 In rust-lang/rust;

· matthiaskrgr opened on Feb 17, 2025

Item-bounds can be used to non-productively prove themselves

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-mediumMedium priorityMedium priority

S-blockedStatus: Blocked on something else such as an RFC or other implementation work.Status: Blocked on something else such as an RFC or other implementation work.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#135246 In rust-lang/rust;

· lcnr opened on Jan 8, 2025

Typesystem soundness hole involving cyclically-defined ATIT, and normalization in trait bounds

A-associated-itemsArea: Associated items (types, constants & functions)Area: Associated items (types, constants & functions)

A-trait-systemArea: Trait systemArea: Trait system

A-type-systemArea: Type systemArea: Type system

C-bugCategory: This is a bug.Category: This is a bug.

I-crashIssue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics.

I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-mediumMedium priorityMedium priority

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#135011 In rust-lang/rust;

· steffahn opened on Jan 2, 2025

When subtyping can switch out trait impls, <code>Pin::new</code>’s check for <code>Target: Unpin</code> becomes insufficient

A-pinArea: PinArea: Pin

C-bugCategory: This is a bug.Category: This is a bug.

I-unsoundIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/SoundnessIssue: A soundness hole (worst kind of bug), see: https://en.wikipedia.org/wiki/Soundness

P-mediumMedium priorityMedium priority

T-libs-apiRelevant to the library API team, which will review and decide on the PR/issue.Relevant to the library API team, which will review and decide on the PR/issue.

T-typesRelevant to the types team, which will review and decide on the PR/issue.Relevant to the types team, which will review and decide on the PR/issue.

Status: Open.

#134407 In rust-lang/rust;

· steffahn opened on Dec 17, 2024