Landing: 26ba7ae2c5da

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Project / Subsystem

gcc / fortran

Date

2026-08-13

Author

Mikael Morin

Commit

26ba7ae2c5dafa759314faa5ed6dfa3b3a159368

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: fortran
patch_id: —
commit_hash: 26ba7ae2c5dafa759314faa5ed6dfa3b3a159368
source_type: github
headline: Fortran CO_BROADCAST shared memory implementation fixes element size.
tldr: Fixes incorrect element size calculation in Fortran's CO_BROADCAST shared memory implementation.
author: Mikael Morin
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • fortran
• coarray
• performance
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/26ba7ae2c5dafa759314faa5ed6dfa3b3a159368
date: 2026-08-13T00:00:00.000Z

The shared memory implementation of Fortran’s CO_BROADCAST collective subroutine incorrectly used the ‘span’ field of the input descriptor to determine element size. This commit corrects it to use the ‘element length’ field, aligning with other implementations and preventing potential issues, though no observable behavior change occurred due to this specific fix.