Landing: 5e8f400f12c2

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Project / Subsystem

gcc / libgfortran

Date

2026-09-01

Author

Jerry DeLisle

Commit

5e8f400f12c27a5c8c0bacc6ac5975c94274db1e

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: libgfortran
patch_id: —
commit_hash: 5e8f400f12c27a5c8c0bacc6ac5975c94274db1e
source_type: github
headline: libgfortran ASSOCIATED now compares element size for polymorphic pointers.
tldr: libgfortran's ASSOCIATED intrinsic now correctly handles polymorphic pointers by comparing element sizes.
author: Jerry DeLisle
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • libgfortran
• fortran
• bugfix
• pointer
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/5e8f400f12c27a5c8c0bacc6ac5975c94274db1e
date: 2026-09-01T00:00:00.000Z

A bug in libgfortran’s implementation of the ASSOCIATED intrinsic prevented it from correctly identifying associated polymorphic pointers, particularly character sections. The issue stemmed from comparing spans and strides directly, which could differ even when denoting the same storage. This fix introduces a stride_in_bytes helper and ensures ASSOCIATED now compares the stride in bytes and checks for agreement on element length or span, resolving PR126964.