Landing: 621661f7d2e9
Project / Subsystem
gcc / c++
Date
2026-07-07
Author
Vladislav Semykin
Commit
621661f7d2e9157b7e5d55fc493e1b6956a35aac
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- c++
- patch_id
- —
- commit_hash
- 621661f7d2e9157b7e5d55fc493e1b6956a35aac
- source_type
- github
- headline
- C++: Fix typeid operand evaluation context [PR125886]
- tldr
- Ensures `typeid` operands are correctly evaluated only when necessary, fixing parser and diagnostic issues.
- author
- Vladislav Semykin
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • parser
- • compiler diagnostics
- • standard conformance
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-07-07T00:00:00.000Z
This commit rectifies how GCC handles typeid operand evaluation, ensuring operands are treated as unevaluated by default as per the C++ standard. Previously, GCC always parsed typeid operands in an evaluated context, causing issues with constructs like declval, non-static data members, and function parameters, and missing lambda capture diagnostics. A two-pass parsing approach is implemented to resolve this.