Landing: 9d8f85ca3335

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Project / Subsystem

gcc / cobol

Date

2026-07-28

Author

James K. Lowden

Commit

9d8f85ca3335a49aba5177620d7f23ebdc88c7a2

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: cobol
patch_id: —
commit_hash: 9d8f85ca3335a49aba5177620d7f23ebdc88c7a2
source_type: github
headline: Cobol lexer cleans up dangerous trailing context warnings.
tldr: Cobol lexer rewritten to avoid dangerous trailing context warnings and improve PICTURE scanning.
author: James K. Lowden
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • cobol
• lexer
• parsing
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/9d8f85ca3335a49aba5177620d7f23ebdc88c7a2
date: 2026-07-28T00:00:00.000Z

The Cobol lexer has been refactored to eliminate “dangerous trailing context” warnings by restructuring how it scans PICTURE clauses. This change improves the robustness of the lexer and ensures the parser uses the new token sequence for validation. It also includes a fix for RT 3580 and removes an unnecessary include.