Landing: 0a4e2861d9ed
Project / Subsystem
gcc / libstdc++
Date
2026-07-31
Author
Patrick Palka
Commit
0a4e2861d9ed69eac1e1c69b84fd61d9e1925ff2
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libstdc++
- patch_id
- —
- commit_hash
- 0a4e2861d9ed69eac1e1c69b84fd61d9e1925ff2
- source_type
- github
- headline
- Libstdc++: Implement LWG 4301 for condition_variable.
- tldr
- Updates condition_variable wait methods to take timeout parameters by value, per LWG 4301.
- author
- Patrick Palka
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • libstdc++
- • concurrency
- • standard library
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-31T00:00:00.000Z
The wait_until and wait_for methods for std::condition_variable and std::condition_variable_any in libstdc++ have been updated to accept their timeout parameters by value. This change aligns the implementation with the resolution of Library Working Group (LWG) issue 4301, ensuring consistent behavior across different C++ standard library implementations.