Landing: a382bed036aa
Project / Subsystem
gcc / c++
Date
2026-09-29
Author
Jonas Hansen
Commit
a382bed036aa5f58622fc7551734f6280d1476c9
Source
github
Perf win
No
Breaking
No
All attributes
- project
- gcc
- subsystem
- c++
- patch_id
- —
- commit_hash
- a382bed036aa5f58622fc7551734f6280d1476c9
- source_type
- github
- headline
- Normalize character array initializers after folding
- tldr
- Character array initializers are now normalized after constant folding to prevent false warnings.
- author
- Jonas Hansen
- outcome
- committed
- performance_win
- false
- breaking_change
- false
- series_id
- —
- series_parts
- []
- tags
-
- • c++
- • optimization
- • warning
- discussion_id_link
- —
- bugzilla_pr
- —
- date
- 2026-09-29T00:00:00.000Z
This change normalizes character array initializers after constant folding to resolve a false -Wformat-truncation warning. Previously, the conversion of braced lists to strings did not account for TARGET_EXPR, allowing character arrays within constexpr aggregates to retain a CONSTRUCTOR form. This led the compiler to incorrectly interpret array elements as single-character strings, triggering warnings for bounded snprintf calls. The fix moves the conversion to occur after constant folding, ensuring it sees the correctly folded initializer.