Landing: 0bffd1dd1713

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Project / Subsystem

gcc / cobol

Date

2026-09-02

Author

James K. Lowden

Commit

0bffd1dd17133367b3a8580a30cb4599ce1f98b2

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: cobol
patch_id: —
commit_hash: 0bffd1dd17133367b3a8580a30cb4599ce1f98b2
source_type: github
headline: Cobol parser now handles tabs in fixed-format input more leniently.
tldr: Cobol lexer now treats a tab in columns 1-6 as if columns 1-7 were blank, improving NIST test compatibility.
author: James K. Lowden
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • cobol
• lexer
• fixed-format
• nist
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/0bffd1dd17133367b3a8580a30cb4599ce1f98b2
date: 2026-09-02T00:00:00.000Z

The COBOL compiler’s lexer has been updated to better handle fixed-format input. A tab character in columns 1-6 will now cause the parser to treat columns 1-7 as blank, aligning with NIST test requirements. This change also improves the fast symbol-lookup for CLASS types.