Landing: 864f26bd7548
Project / Subsystem
gcc / libstdc++
Date
2026-04-26
Author
Álvaro Begué
Commit
864f26bd7548d1a290b334b8f5375199449fcff5
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libstdc++
- patch_id
- —
- commit_hash
- 864f26bd7548d1a290b334b8f5375199449fcff5
- source_type
- github
- headline
- libstdc++: Fix numeric save offset on Zone lines [PR124851]
- tldr
- Fixes a bug in libstdc++ that caused incorrect timezone offsets when Zone lines specified numeric DST save values.
- author
- Álvaro Begué
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • libstdc++
- • timezone
- • bugfix
- • DST
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-04-26T00:00:00.000Z
This commit corrects how libstdc++ handles numeric save offsets in Zone lines within the timezone database. Previously, the standard offset was incorrectly stored in ZoneInfo::m_offset, ignoring the numeric save value. This resulted in incorrect timezone offsets being reported. The fix ensures that m_offset consistently stores only the standard offset, and the save value is added back when needed, resolving the inconsistency and providing accurate timezone information.