Landing: d3b2edb26648
Project / Subsystem
gcc / c-family
Date
2026-05-11
Author
Jason Merrill
Commit
d3b2edb2664893cc0deb3d8815effa27436b39f9
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- c-family
- patch_id
- —
- commit_hash
- d3b2edb2664893cc0deb3d8815effa27436b39f9
- source_type
- github
- headline
- C-family: Look through non-user-facing typedef
- tldr
- The compiler now correctly identifies user-facing types even when going through non-user-facing typedefs.
- author
- Jason Merrill
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • typedef
- • type resolution
- • bugfix
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-05-11T00:00:00.000Z
The compiler’s ‘aka’ printing (used to display type information) could differ between in-tree and installed compilers, due to differences in how libstdc++ headers are treated. The issue was that the compiler would stop looking for the underlying user type when it encountered a non-user-facing typedef (e.g., __iter_type<T>). This commit fixes this by making the type resolution recurse through such typedefs.