Landing: e8aa21caed8a

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Project / Subsystem

gcc / c++

Date

2026-05-07

Author

Jakub Jelinek

Commit

e8aa21caed8a3c8b4b27d224a04296f008bcf3da

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: c++
patch_id: —
commit_hash: e8aa21caed8a3c8b4b27d224a04296f008bcf3da
source_type: github
headline: C++: Improve printing of REFLECT_EXPR in diagnostics.
tldr: Enhances REFLECT_EXPR printing in diagnostics to use C++ syntax where possible, improving readability.
author: Jakub Jelinek
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • c++
• reflection
• diagnostics
• printing
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/e8aa21caed8a3c8b4b27d224a04296f008bcf3da
date: 2026-05-07T00:00:00.000Z

This commit improves the printing of REFLECT_EXPR in C++ diagnostics to use more C++-like syntax, making the output more understandable. It attempts to use valid C++ syntax for REFLECT_BASE, REFLECT_PARM, REFLECT_DATA_MEMBER_SPEC, REFLECT_VALUE, and REFLECT_OBJECT. For annotations, it prints them as ^^[[=1]] because the IL doesn’t store the context of the attributes.