Landing: 54ddb5ff8b91

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Project / Subsystem

gcc / testsuite

Date

2026-05-15

Author

Jakub Jelinek

Commit

54ddb5ff8b91bf518e69ed9221ed4530e7ad55af

Source

github

Perf win

Yes

Breaking

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All attributes

project: gcc
subsystem: testsuite
patch_id: —
commit_hash: 54ddb5ff8b91bf518e69ed9221ed4530e7ad55af
source_type: github
headline: Adds a testcase for consteval-only types.
tldr: A new test case was added to ensure that consteval-only type computations in GCC are not quadratic in complexity.
author: Jakub Jelinek
outcome: committed
performance_win: true
breaking_change: false
series_id: —
series_parts: []
tags: • testsuite
• c++
• consteval
• performance
discussion_id_link: —
bugzilla_pr: —
url: https://github.com/gcc-mirror/gcc/commit/54ddb5ff8b91bf518e69ed9221ed4530e7ad55af
date: 2026-05-15T00:00:00.000Z

A new test case, g++.dg/reflect/pr125179.C, was added to the GCC testsuite to verify that computations involving consteval-only types do not exhibit quadratic complexity. This test creates a loop with 50000 types which could cause a timeout with an earlier quadratic implementation.