Landing: 720d2a68c47f

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Project / Subsystem

gcc / libstdc++

Date

2026-04-17

Author

Jakub Jelinek

Commit

720d2a68c47f12ad3e3ae09bc3e6a057a2d9e2a7

Source

github

Impact

6/10

Perf win

Breaking

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All attributes

project: gcc
subsystem: libstdc++
patch_id: —
commit_hash: 720d2a68c47f12ad3e3ae09bc3e6a057a2d9e2a7
source_type: github
headline: Libstdc++: Update baseline symbols for several Linux architectures.
tldr: Updates baseline symbols for several Linux architectures in libstdc++ to reflect recent changes.
why_it_matters: Up-to-date baseline symbols are crucial for maintaining ABI compatibility, ensuring that applications built with different compiler versions can interoperate correctly.
author: Jakub Jelinek
impact_score: 6
impact_rationale: Updates to baseline symbols affect ABI compatibility; impact is limited to the listed Linux distributions.
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • libstdc++
• ABI
• baseline symbols
• Linux
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/720d2a68c47f12ad3e3ae09bc3e6a057a2d9e2a7
date: 2026-04-17T00:00:00.000Z

This commit updates the baseline_symbols.txt files for x86_64, i386, i486, aarch64, and s390x Linux architectures. The updates are derived from Fedora package builds and manual analysis, addressing discrepancies introduced in recent GCC versions. These changes ensure that the library’s ABI remains stable.