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Make all submodules in the rustc repo optional

A-backtraceArea: BacktracesArea: Backtraces

A-metaArea: Issues & PRs about the rust-lang/rust repository itselfArea: Issues & PRs about the rust-lang/rust repository itself

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

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.

#143079 In rust-lang/rust;

· RalfJung opened on Jun 27, 2025

Panic backtrace on Arm64 Windows is truncated

A-backtraceArea: BacktracesArea: Backtraces

A-panicArea: Panicking machineryArea: Panicking machinery

A-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

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

O-ArmTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 stateTarget: 32-bit Arm processors (armv6, armv7, thumb...), including 64-bit Arm in AArch32 state

O-windowsOperating system: WindowsOperating system: Windows

Status: Open.

#140489 In rust-lang/rust;

· dpaoliello opened on Apr 29, 2025

Figure out how to make symbolisation code smaller

A-backtraceArea: BacktracesArea: Backtraces

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

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.

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.

#139209 In rust-lang/rust;

· joboet opened on Apr 1, 2025

<code>-C force-frame-pointers=yes</code> not respected by <code>-Z build-std</code> or <code>opt-level = "z"</code> on <code>riscv32imc-unknown-none-elf</code>

A-backtraceArea: BacktracesArea: Backtraces

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.

O-riscvTarget: RISC-V architectureTarget: RISC-V architecture

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.

#136198 In rust-lang/rust;

· rslawson opened on Jan 28, 2025

Tracking Issue for short backtraces in the default panic hook

A-backtraceArea: BacktracesArea: Backtraces

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

A-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

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

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.

#136129 In rust-lang/rust;

· jyn514 opened on Jan 27, 2025

Failed to capture backtrace when compiling with <code>--remap-path-prefix=${PWD}=</code> on <code>aarch64-apple-darwin</code>

A-backtraceArea: BacktracesArea: Backtraces

A-path-remappingArea: path remapping, --remap-path-prefix, --remap-cwd-prefix, --remap-diagnostics-scope etc.Area: path remapping, --remap-path-prefix, --remap-cwd-prefix, --remap-diagnostics-scope etc.

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

O-appleOperating system: Apple (macOS, iOS, tvOS, visionOS, watchOS)Operating system: Apple (macOS, iOS, tvOS, visionOS, watchOS)

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.

#135853 In rust-lang/rust;

· ashi009 opened on Jan 22, 2025

Infinite/long backtrace on i686 under Wine

A-backtraceArea: BacktracesArea: Backtraces

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

A-panicArea: Panicking machineryArea: Panicking machinery

A-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

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

E-needs-investigationCall for partcipation: This issues needs some investigation to determine current statusCall for partcipation: This issues needs some investigation to determine current status

O-windowsOperating system: WindowsOperating system: Windows

O-x86_32Target: x86 processors, 32 bit (like i686-*) (also known as IA-32, i386, i586, i686)Target: x86 processors, 32 bit (like i686-*) (also known as IA-32, i386, i586, i686)

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.

#135717 In rust-lang/rust;

· purplesyringa opened on Jan 19, 2025

matching on functions with similar call stacks breaks optimized backtraces even with debuginfo

A-backtraceArea: BacktracesArea: Backtraces

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

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-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

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.

#134909 In rust-lang/rust;

· jyn514 opened on Dec 30, 2024

<code>-musl</code> platforms do not include unwind tables for libc

A-backtraceArea: BacktracesArea: Backtraces

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

O-muslTarget: The musl libcTarget: The musl libc

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)

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.

#134592 In rust-lang/rust;

· RomanHargrave opened on Dec 21, 2024

shorten backtraces when called as a cdylib, not just for executables

A-backtraceArea: BacktracesArea: Backtraces

A-panicArea: Panicking machineryArea: Panicking machinery

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

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.

#134049 In rust-lang/rust;

· jyn514 opened on Dec 8, 2024

Write down where all the unwind/backtrace code is

A-backtraceArea: BacktracesArea: Backtraces

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-runtimeArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflowsArea: std's runtime and "pre-main" init for handling backtraces, unwinds, stack overflows

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

E-tediousCall for participation: An issue involves lots of work and is better handled as many small tasks.Call for participation: An issue involves lots of work and is better handled as many small tasks.

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.

#130257 In rust-lang/rust;

· workingjubilee opened on Sep 12, 2024

Deadlock when capturing a backtrace from allocator during panic with test output capturing enabled

A-backtraceArea: BacktracesArea: Backtraces

A-libtestArea: `#[test]` / the `test` libraryArea: `#[test]` / the `test` library

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

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

Status: Open.

#130187 In rust-lang/rust;

· Nemo157 opened on Sep 10, 2024