Landing: 5e914c4f7574
Project / Subsystem
gcc / libstdc++
Date
2026-07-21
Author
Tomasz Kamiński
Commit
5e914c4f75743dab1ad31718e1dc846d5f6fe284
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- libstdc++
- patch_id
- —
- commit_hash
- 5e914c4f75743dab1ad31718e1dc846d5f6fe284
- source_type
- github
- headline
- libstdc++: Use 2*epsilon step for piecewise_constant_distribution tests.
- tldr
- Adjusted `piecewise_constant_distribution` tests in libstdc++ to use a 2*epsilon step.
- author
- Tomasz Kamiński
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • libstdc++
- • testsuite
- • random
- • floating-point
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-21T00:00:00.000Z
The libstdc++ testsuite for piecewise_constant_distribution now uses a step size of 2 * epsilon() instead of a smaller value. This change ensures test consistency across different architectures, specifically resolving issues on powerpc64le-unknown-linux-gnu where floating-point precision differences previously caused failures.