Landing: 7b87f41690d4
Project / Subsystem
gcc / libcpp
Date
2026-08-06
Author
Jakub Jelinek
Commit
7b87f41690d46b869c21d0d0537b766698da3827
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libcpp
- patch_id
- —
- commit_hash
- 7b87f41690d46b869c21d0d0537b766698da3827
- source_type
- github
- headline
- libcpp: Fix ICE with __VA_OPT__ [PR125048].
- tldr
- Corrects an internal compiler error related to macro expansion with __VA_OPT__.
- author
- Jakub Jelinek
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • preprocessor
- • compiler bug
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-08-06T00:00:00.000Z
This commit resolves an internal compiler error (ICE) in the C preprocessor (libcpp) when handling the __VA_OPT__ macro. The error occurred because macro expansion could reallocate internal data structures while holding pointers to them, leading to a use-after-free situation. The fix ensures that pointers to these reallocated structures are updated correctly.