Landing: 316c6dddbb48

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Project / Subsystem

gcc / configure

Date

2026-09-18

Author

Christophe Lyon

Commit

316c6dddbb4858c2c34b58b3bddc6b85923d2799

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: configure
patch_id: —
commit_hash: 316c6dddbb4858c2c34b58b3bddc6b85923d2799
source_type: github
headline: Fix assembler check for --gdwarf-4 option
tldr: Ensures assembler check for DWARF 4 debug info works across architectures.
author: Christophe Lyon
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • configure
• dwarf
• assembler
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/316c6dddbb4858c2c34b58b3bddc6b85923d2799
date: 2026-09-18T00:00:00.000Z

The configuration script’s check for assembler support of the --gdwarf-4 option used a hard-coded ret instruction. This instruction is not universally supported across all architectures, such as ARM. The patch replaces ret with a generic $insn placeholder, making the check more portable and reliable.