Landing: 4c85f7cf587f

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Project / Subsystem

gcc / lto

Date

2026-07-11

Author

Lewis Hyatt

Commit

4c85f7cf587f0f62a5eb1884998d4ed30a39552a

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: lto
patch_id: —
commit_hash: 4c85f7cf587f0f62a5eb1884998d4ed30a39552a
source_type: github
headline: LTO front end now supports diagnostic pragmas
tldr: Link-Time Optimization front end can now process and stream diagnostic pragmas, improving build control.
author: Lewis Hyatt
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • lto
• diagnostics
• pragma
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/4c85f7cf587f0f62a5eb1884998d4ed30a39552a
date: 2026-07-11T00:00:00.000Z

The LTO front end has been enhanced to support compiler diagnostic pragmas, such as #pragma GCC diagnostic. This change ensures that diagnostic settings are correctly streamed and reconstructed during the LTO process, even when functions are distributed across multiple LTO sections. New test cases verify this functionality.