Landing: fe059756ddc4
Project / Subsystem
gcc / gcc/c++
Date
2026-05-22
Author
Jason Merrill
Commit
fe059756ddc4ec4e357a73d6385fd93db202c66e
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- gcc/c++
- patch_id
- —
- commit_hash
- fe059756ddc4ec4e357a73d6385fd93db202c66e
- source_type
- github
- headline
- c++: defaulted ctor vs template ctor
- tldr
- Fixes a compiler cycle related to defaulted constructors and template constructors in C++.
- author
- Jason Merrill
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • bugfix
- • constructor
- • templates
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-05-22T00:00:00.000Z
This commit resolves a circular dependency issue in C++ when the compiler tries to lazily declare the RE move constructor while considering a template constructor. The fix involves handling LOOKUP_DEFAULTED in check_non_deducible_conversions to break the cycle. A new test case is added.