Landing: a5d4ef63b349

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Project / Subsystem

gcc / gcc

Date

2026-08-07

Author

Aldy Hernandez

Commit

a5d4ef63b349f5729b5d6ff940c8f490754df75c

Source

github

Perf win

Breaking

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project: gcc
subsystem: gcc
patch_id: —
commit_hash: a5d4ef63b349f5729b5d6ff940c8f490754df75c
source_type: github
headline: Sign-zero self-test guarded by HONOR_SIGNED_ZEROS.
tldr: A self-test for floating-point signed zeros is now guarded to prevent failures on architectures like VAX that do not support them.
author: Aldy Hernandez
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • testing
• float
• architecture
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/a5d4ef63b349f5729b5d6ff940c8f490754df75c
date: 2026-08-07T00:00:00.000Z

A self-test within the floating-point range optimization (frange) incorrectly assumed the existence of signed zeros. This commit guards the self-test with the HONOR_SIGNED_ZEROS flag, ensuring it only runs on architectures that support signed zeros, such as systems compliant with IEEE 754. This prevents test failures on platforms like VAX.