rust-lang/rustc_codegen_gcc

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libgccjit AOT codegen for rustc

Stars: 1.2k
Forks: 105
Open beginner issues: 0
Indexed issues: 156
Avg merge: 8h 20m
Merged PRs (30d): 14

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

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156 open issues indexed

[AI] Bunch of bugs found by autonomous scanner Open

bug

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#970 · 5 comments · Opened Sep 2, 2026
Support `#[no_builtin]` Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#943 · Opened Aug 4, 2026
`rustix` error when building helix Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#938 · 1 comment · Opened Aug 1, 2026
Quickstart can't build hello world: librustc_codegen_gcc.so not found Open

documentation

Difficulty 3/5 1-2 days Newbie friendliness 64/100

rust-lang/rustc_codegen_gcc#930 · 5 comments · Opened Jul 26, 2026
Enable the asm tests for stack protector Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 42/100

rust-lang/rustc_codegen_gcc#922 · Opened Jul 24, 2026
rustup component for m68k Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#887 · Opened May 21, 2026
Issues building m68k Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/rustc_codegen_gcc#875 · 8 comments · Opened Apr 28, 2026
Bug and fix: `core::fmt` hangs with formatting flags (`{:#x}`, `{:#o}`, `{:#b}`, etc.) Open

Difficulty 4/5 3-5 days Newbie friendliness 52/100

rust-lang/rustc_codegen_gcc#871 · 3 comments · Opened Apr 9, 2026
Add CI where we test with a sysroot compiled by LLVM Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#850 · Opened Feb 12, 2026
Port asm tests to cg_gcc Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 48/100

rust-lang/rustc_codegen_gcc#839 · 3 comments · Opened Jan 25, 2026
ICE gcc_jit_context_new_function name contains invalid character: '' Open

bug libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#837 · 1 comment · Opened Jan 24, 2026
ICE `inlining failed in call to ‘always_inline’ function body not available` (`-Copt-level=(2..)` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

rust-lang/rustc_codegen_gcc#832 · 3 comments · Opened Jan 24, 2026
ICE inlining failed in call to ‘always_inline’ function body not available Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#828 · 1 comment · Opened Jan 24, 2026
Support f16 on targets where GCC doesn't support it Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#825 · 1 comment · Opened Jan 23, 2026
When we have rustup distribution, show the rustup command to install the missing components Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#822 · Opened Dec 29, 2025
Fix the tests of the crate portable-atomic Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#821 · 2 comments · Opened Dec 20, 2025
Add a nightly CI to test compiling rustc with cg_gcc for x86-64 and cross-compiling rustc for m68k Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#817 · Opened Dec 14, 2025
Another problem with Windows target and `compiler_builtins` Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

rust-lang/rustc_codegen_gcc#801 · 2 comments · Opened Nov 15, 2025
Make it work with rustc's debug_assert Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#799 · Opened Nov 10, 2025
Use GENERIC expressions for the rotate intrinsics Open

enhancement libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#798 · 1 comment · Opened Nov 5, 2025
base-db crate failed to build when bootstrapping Rust Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 30/100

rust-lang/rustc_codegen_gcc#796 · 3 comments · 1 reaction · Opened Nov 3, 2025
Occasional segfault in stdarch test Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#794 · Opened Oct 28, 2025
Failure to build zune-jpeg@0.4.21 crate for ruffle Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 28/100

rust-lang/rustc_codegen_gcc#791 · 8 comments · Opened Oct 28, 2025
Failure to build wgpu-hal@26.0.6 crate for ruffle Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#790 · Opened Oct 28, 2025
Failed to build `core` crate with `-C opt-level=0` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#789 · 4 comments · Opened Oct 27, 2025
ICE when building tree-sitter@0.25.10 (libgccjit.so: error: : bitcast with types of different sizes) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#787 · 2 comments · Opened Oct 27, 2025
Use -mcpu on Aarch64 Open

libgccjit

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#785 · Opened Oct 26, 2025
Mapping for Aarch64 CPU features Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#782 · Opened Oct 22, 2025
-Cllvm-args=-fanalyzer reports uses of uninitialized values Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#781 · 13 comments · Opened Oct 21, 2025
Multilib support Open

bug

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/rustc_codegen_gcc#779 · Opened Oct 12, 2025
.cargo/config.toml not working properly Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#762 · Opened Sep 22, 2025
`cg_gcc` does not respect -Ctarget-cpu, and uses the host feature set by default. Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#752 · 1 comment · Opened Aug 17, 2025
Building Rustc on m68k Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#744 · 41 comments · Opened Jul 26, 2025
DEC Alpha support Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#742 · 43 comments · 1 reaction · Opened Jul 24, 2025
Fix tests/ui/simd/intrinsic/generic-arithmetic-pass.rs Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#739 · Opened Jul 18, 2025
--sysroot-panic-abort might not be necessary anymore Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#737 · Opened Jul 18, 2025
Stop formating Rvalues to get function names Open

enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#729 · Opened Jul 5, 2025
Use GCC unordered comparison operators Open

enhancement libgccjit

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#721 · Opened Jun 25, 2025
Add support for automatically building libgccjit from source Open

Difficulty 5/5 Over a week Newbie friendliness 30/100

rust-lang/rustc_codegen_gcc#719 · 6 comments · Opened Jun 21, 2025
Don't apply the aligned attribute nedlessly Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#714 · 1 comment · Opened Jun 18, 2025
Cast from u128 to f32 is broken in release mode Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#705 · 5 comments · Opened Jun 10, 2025
Operation resulting in a NaN gets optimized away, changing the result to infinity. Open

arm bug

Difficulty 4/5 3-5 days Newbie friendliness 42/100

rust-lang/rustc_codegen_gcc#704 · Opened Jun 10, 2025
Possible ARM bug Open

arm bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#701 · 5 comments · Opened Jun 8, 2025
Run CI of cross-gcc whenever there's a new commit to gcc Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#696 · Opened Jun 4, 2025
Stack overflow in upstream GCC when compiling huge functions Open

bug libgccjit

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#695 · 5 comments · Opened Jun 3, 2025
Another UB found using rustlantis Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#691 · 5 comments · Opened May 31, 2025
Casting infinity to an intiger sometimes results in a 0 value(with optimizations enabled) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#690 · 23 comments · Opened May 30, 2025
UB found using `rustlantis` Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#689 · 3 comments · Opened May 29, 2025
Integer width is asumed to be 32 bit at some points Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#685 · 3 comments · Opened May 24, 2025
libgccjit interrupt service routine error in psm v0.1.26 and stacker v0.1.21 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#675 · 3 comments · Opened May 16, 2025

rust-lang/rustc_codegen_gcc

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