Landing: 0c0a5d99500a

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Project / Subsystem

gcc / cobol

Date

2026-08-10

Author

Robert Dubner

Commit

0c0a5d99500afd023c3dd0cd1909889cae954f6f

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: cobol
patch_id: —
commit_hash: 0c0a5d99500afd023c3dd0cd1909889cae954f6f
source_type: github
headline: cobol: Repair COBOL EXTERNAL data definition.
tldr: Fixes COBOL EXTERNAL data definitions by aligning them with Fortran COMMON, resolving linking issues with C modules.
author: Robert Dubner
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • cobol
• interoperability
• linker
• bugfix
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/0c0a5d99500afd023c3dd0cd1909889cae954f6f
date: 2026-08-10T00:00:00.000Z

This commit corrects how COBOL’s EXTERNAL data definitions are handled, bringing them in line with Fortran’s COMMON data behavior. Previously, these were mistakenly treated as C global variables, causing linking problems. The fix now uses DECL_WEAK references for metadata and DECL_COMMON for data areas, enabling correct interoperability with C modules and proper runtime behavior for EXTERNAL data.