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Crash when compiling an event handler implementation with latest stable rustc 1.88.0

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) ❄️

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

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.

#143821 In rust-lang/rust;

· gents83 opened on Jul 12, 2025

ICE when using the new ${concat()} meta

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

F-macro_metavar_expr_concat`#![feature(macro_metavar_expr_concat)]``#![feature(macro_metavar_expr_concat)]`

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

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

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.

#143819 In rust-lang/rust;

· linkmauve opened on Jul 11, 2025

Rust LLVMIR causes errors after LTO on x86-32

A-ABIArea: Concerning the application binary interface (ABI)Area: Concerning the application binary interface (ABI)

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.

A-LTOArea: Link-time optimization (LTO)Area: Link-time optimization (LTO)

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

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

O-x86_32Target: x86 processors, 32 bit (like i686-*) (IA-32)Target: x86 processors, 32 bit (like i686-*) (IA-32)

Status: Open.

#143818 In rust-lang/rust;

· jrmuizel opened on Jul 11, 2025

<code>x.py check; x.py test</code> builds compiler twice

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

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#143815 In rust-lang/rust;

· matthiaskrgr opened on Jul 11, 2025

Add a UB-check to <code>Vec::set_len</code>

A-collectionsArea: `std::collections`Area: `std::collections`

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

E-easyCall for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue.Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first 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.

#143813 In rust-lang/rust;

· scottmcm opened on Jul 11, 2025

Tracking Issue for <code>const_slice_rotate</code>

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

Status: Open.

#143812 In rust-lang/rust;

· okaneco opened on Jul 11, 2025

ICE: loop match: broken mir <code>encountered 'Assign' statement with overlapping memory</code>

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

F-loop_matchwhen you match up with someone and they really throw you for a loopwhen you match up with someone and they really throw you for a loop

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

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

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.

#143806 In rust-lang/rust;

· matthiaskrgr opened on Jul 11, 2025

Tracking issue for release notes of #140153: Implement <code>Debug</code> for <code>EncodeWide</code>

needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.This issue may need triage. Remove it if it has been sufficiently triaged.

relnotesMarks issues that should be documented in the release notes of the next release.Marks issues that should be documented in the release notes of the next release.

relnotes-tracking-issueMarks issues tracking what text to put in release notes.Marks issues tracking what text to put in release notes.

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.

Status: Open.

#143805 In rust-lang/rust;

· rustbot opened on Jul 11, 2025

On some targets, specifying <code>optimize_for_size</code> in <code>build-std-features</code> causes the <code>core</code> crate build to fail

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

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.

#143804 In rust-lang/rust;

· nazo6 opened on Jul 11, 2025

Tracking Issue for const_ops

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

Status: Open.

#143802 In rust-lang/rust;

· RalfJung opened on Jul 11, 2025

Tracking Issue for <code>core::cell::{Ref,RefMut}::try_map</code>

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

Status: Open.

#143801 In rust-lang/rust;

· GrigorenkoPV opened on Jul 11, 2025

Tracking Issue for const_cmp

C-tracking-issueCategory: An issue tracking the progress of sth. like the implementation of an RFCCategory: An issue tracking the progress of sth. like the implementation of an RFC

S-tracking-unimplementedStatus: The feature has not been implemented.Status: The feature has not been implemented.

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.

Status: Open.

#143800 In rust-lang/rust;

· RalfJung opened on Jul 11, 2025