Landing: 1cfd37290199
Project / Subsystem
gcc / gcc
Date
2026-04-17
Author
Jan Hubicka
Commit
1cfd37290199bd69706d5a74d4cee40bd83d671c
Source
github
Impact
5/10
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc
- patch_id
- —
- commit_hash
- 1cfd37290199bd69706d5a74d4cee40bd83d671c
- source_type
- github
- headline
- Fix lto-devirt-23.C testcase failure.
- tldr
- The compiler was incorrectly assuming that destructors can't be in construction, leading to a test failure fixed by removing an ineffective check.
- why_it_matters
- This bug could lead to incorrect code generation in LTO, especially when dealing with polymorphic types and virtual functions.
- author
- Jan Hubicka
- impact_score
- 5
- impact_rationale
- Fixes a testcase failure related to LTO and devirtualization.
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • lto
- • ipa
- • devirtualization
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-04-17T00:00:00.000Z
The testcase lto-devirt-23.C was failing because the compiler was missing the fact that a type can be in construction. The polymorphic_ctor_dtor_p function was returning false on polymorphic destructors because they have a PURE flag. The check was deemed ineffective and has been removed to resolve the failure.