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[lldb] Option<String> with empty string incorrectly displayed as None (regression)

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.

Status: Open.

#150392 In rust-lang/rust;

· alariczq opened on Dec 26, 2025

std::offload lacks debug locations

A-debuginfoArea: Debugging information in compiled programs (DWARF, PDB, etc.)Area: Debugging information in compiled programs (DWARF, PDB, etc.)

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

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

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

Status: Open.

#150391 In rust-lang/rust;

· ZuseZ4 opened on Dec 26, 2025

f16/u128 and f16/i128 casts fail to link on macos

A-compiler-builtinsArea: compiler-builtins (https://github.com/rust-lang/compiler-builtins)Area: compiler-builtins (https://github.com/rust-lang/compiler-builtins)

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

F-f16_and_f128`#![feature(f16)]`, `#![feature(f128)]``#![feature(f16)]`, `#![feature(f128)]`

O-macosOperating system: macOSOperating system: macOS

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.

#150389 In rust-lang/rust;

· npmccallum opened on Dec 26, 2025

ICE from specializing Drop impl with impossible bound

A-destructorsArea: Destructors (`Drop`, …)Area: Destructors (`Drop`, …)

A-impossible-boundsArea: Issues related to have impossible trait bounds in scope (impossible predicates)Area: Issues related to have impossible trait bounds in scope (impossible predicates)

A-trait-systemArea: Trait systemArea: Trait system

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

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

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

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.

#150387 In rust-lang/rust;

· theemathas opened on Dec 26, 2025

ICE: broken MIR Unsize coercion in "runtime-optimized" phase (async block !Sync to Sync trait object)

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

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

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.

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.

#150378 In rust-lang/rust;

· canmi21 opened on Dec 25, 2025

The compiled output of type <code>cdylib</code> became larger.

A-lldArea: Linkage issues specific to rust-lldArea: Linkage issues specific to rust-lld

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

I-heavyIssue: Problems and improvements with respect to binary size of generated code.Issue: Problems and improvements with respect to binary size of generated code.

I-prioritizeIssue: Indicates that prioritization has been requested for this issue.Issue: Indicates that prioritization has been requested for this issue.

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

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.

#150364 In rust-lang/rust;

· cezarbbb opened on Dec 25, 2025

<code>std::process::Command::{spawn,output,status}</code> have inadequate docs on their error conditions

A-docsArea: Documentation for any part of the project, including the compiler, standard library, and toolsArea: Documentation for any part of the project, including the compiler, standard library, and tools

A-error-handlingArea: Error handlingArea: Error handling

A-processArea: `std::process` and `std::env`Area: `std::process` and `std::env`

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.

#150361 In rust-lang/rust;

· cyqsimon opened on Dec 25, 2025

ICE <code>try_lower_anon_const_lit: received const param which shouldn't be possible</code>

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

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

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

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

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

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.

#150356 In rust-lang/rust;

· matthiaskrgr opened on Dec 24, 2025

ICE <code>expected ConstKind::Value, got UnevaluatedConst </code>

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

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

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

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

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

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.

#150355 In rust-lang/rust;

· matthiaskrgr opened on Dec 24, 2025

ICE <code>expected ConstKind::Value, got N/#1</code>

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

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

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

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

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.

#150354 In rust-lang/rust;

· matthiaskrgr opened on Dec 24, 2025

Conflict markers with nonstandard lengths are not recognized as such

A-diagnosticsArea: Messages for errors, warnings, and lintsArea: Messages for errors, warnings, and lints

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.

#150352 In rust-lang/rust;

· Fulgen301 opened on Dec 24, 2025

Create a profile option for autodiff to replace RUSTFLAGS requirement.

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

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.

Enhancement

#150345 In rust-lang/rust;

· ZuseZ4 opened on Dec 24, 2025