Landing: bd2a164d7fdf
Project / Subsystem
gcc / libgfortran
Date
2026-09-19
Author
Jerry DeLisle
Commit
bd2a164d7fdf1f109a8019aa2d32a2a2ad4893c4
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libgfortran
- patch_id
- —
- commit_hash
- bd2a164d7fdf1f109a8019aa2d32a2a2ad4893c4
- source_type
- github
- headline
- libgfortran: Fix coarray team size calculation
- tldr
- libgfortran's coarray implementation now correctly determines team sizes using the image map, resolving issues with image termination and status reporting.
- author
- Jerry DeLisle
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • coarray
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-09-19T00:00:00.000Z
This commit addresses a bug in libgfortran’s coarray implementation where team sizes were incorrectly derived from barriers. When images terminated, the barrier size decreased, leading to incorrect NUM_IMAGES counts and faulty team formation and collective operations. The fix ensures team sizes are consistently determined from the team’s image map, which remains static.