Landing: 89c1412dfc26
Project / Subsystem
gcc / gcc/c++
Date
2026-08-12
Author
Jakub Jelinek
Commit
89c1412dfc26d141a6d8732b269c3e30eff44613
Source
github
Perf win
No
Breaking
Yes
All attributes
- project
- gcc
- subsystem
- gcc/c++
- patch_id
- —
- commit_hash
- 89c1412dfc26d141a6d8732b269c3e30eff44613
- source_type
- github
- headline
- Alignof (decltype (^^::)) changed to alignof (void *).
- tldr
- Corrected alignment of `std::meta::info` type in C++ reflection.
- author
- Jakub Jelinek
- outcome
- committed
- performance_win
- false
- breaking_change
- true
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • reflection
- • abi
- • alignment
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-12T00:00:00.000Z
The alignment of std::meta::info in C++ reflection has been corrected to match alignof(void*) instead of the previous incorrect value of 1. This change impacts the alignof(decltype(^^::)) expression, ensuring consistent ABI behavior for reflection metadata, particularly for C++26 experimental features.