Landing: adb4f4a064c0
Project / Subsystem
gcc / libstdc++
Date
2026-07-01
Author
Jonathan Wakely
Commit
adb4f4a064c009cd616106fa4c648182c18f96d9
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libstdc++
- patch_id
- —
- commit_hash
- adb4f4a064c009cd616106fa4c648182c18f96d9
- source_type
- github
- headline
- libstdc++: Fix bootstrap failure in tzdb.cc with specific atomic conditions
- tldr
- Fixes a bootstrap build failure in tzdb.cc by ensuring atomic functions are always defined, regardless of target atomic pointer and integer lock-free condition…
- author
- Jonathan Wakely
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • libstdc++
- • build
- • atomic
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-01T00:00:00.000Z
A recent change in libstdc++ caused a bootstrap failure in tzdb.cc when certain atomic pointer and integer lock-free conditions were met on the target. The error occurred because the NumLeapSeconds::set_locked member function was not defined under these specific conditions. This fix ensures that the set_atomically and set_locked functions are defined unconditionally, resolving the mismatch and allowing the build to complete successfully.