Landing: c23cf9b34934

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Project / Subsystem

gcc / cobol

Date

2026-09-17

Author

James K. Lowden

Commit

c23cf9b3493495fca08696fb831625a079848786

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: cobol
patch_id: —
commit_hash: c23cf9b3493495fca08696fb831625a079848786
source_type: github
headline: Cobol PICTURE evaluation improved with automaton
tldr: Cobol PICTURE clause evaluation is improved by introducing an automaton that enforces ISO Table 10 rules.
author: James K. Lowden
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • cobol
• parser
• compiler
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/c23cf9b3493495fca08696fb831625a079848786
date: 2026-09-17T00:00:00.000Z

An automaton has been introduced to parse COBOL PICTURE strings, enforcing ISO Table 10 rules for PICTURE sequences. This change enhances the accuracy of PICTURE clause evaluation, correctly identifying data item types or invalid characters, and has revealed errors in the test suite.