Landing: 8ee8f2beab43

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Project / Subsystem

gcc / gcc/c++/reflection

Date

2026-06-18

Author

Marek Polacek

Commit

8ee8f2beab432c57a5b68b8816910c985c8e9356

Source

github

Perf win

Breaking

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All attributes

project: gcc
subsystem: gcc/c++/reflection
patch_id: —
commit_hash: 8ee8f2beab432c57a5b68b8816910c985c8e9356
source_type: github
headline: C++/reflection: members_of skips built-in functions.
tldr: Reflection API now correctly excludes built-in functions from member listings.
author: Marek Polacek
outcome: committed
performance_win: false
breaking_change: false
series_id: —
series_parts: []
tags: • c++
• reflection
• compiler
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/8ee8f2beab432c57a5b68b8816910c985c8e9356
date: 2026-06-18T00:00:00.000Z

The C++ reflection API’s members_of function no longer includes compiler built-ins, such as __builtin_fdimf32x. This change uses DECL_IS_UNDECLARED_BUILTIN to filter these out, significantly reducing the number of elements returned and producing more accurate results for reflection queries.