Landing: b554e3e64368
Project / Subsystem
gcc / gcc
Date
2026-05-30
Author
Jakub Jelinek
Commit
b554e3e64368c734e6e47c708fa7dde4096775c6
Source
github
Perf win
Yes
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc
- patch_id
- —
- commit_hash
- b554e3e64368c734e6e47c708fa7dde4096775c6
- source_type
- github
- headline
- C: Implement bit-precise enums as specified in C2Y N3705
- tldr
- This commit implements bit-precise enums as defined in C2Y N3705.
- author
- Jakub Jelinek
- outcome
- committed
- performance_win
- true
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c
- • c2y
- • enums
- • bitint
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-05-30T00:00:00.000Z
This commit implements the bit-precise enum feature from the C2Y draft standard (N3705). It enables the use of _BitInt(N) types as the underlying type for enums when compiling with -std=c2y or -std=gnu2y. The implementation adjusts the BITINT_TYPE_P macro and modifies related code to handle enums with bit-precise underlying types seamlessly, including conversions and bit-field promotions.