Landing: 847d8287d372
Project / Subsystem
gcc / gccrs
Date
2026-06-28
Author
Lucas Ly Ba
Commit
847d8287d372b0f7b3e46272a051adab1bf85f55
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gccrs
- patch_id
- —
- commit_hash
- 847d8287d372b0f7b3e46272a051adab1bf85f55
- source_type
- github
- headline
- gccrs: add missing_abi lint
- tldr
- gccrs now warns about extern blocks without an explicit ABI string, promoting explicit ABI declarations.
- author
- Lucas Ly Ba
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • gccrs
- • rust
- • lint
- • abi
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-06-28T00:00:00.000Z
The gccrs compiler introduces a new lint to warn developers when an extern block is declared without an explicit ABI string, such as extern { ... }. This silenty defaults to the C ABI, which Rust deprecates in favor of explicit declarations like extern "C". The change ensures the AST’s has_abi flag is preserved through lowering to enable this new warning.