LWG4269: `unique_copy` passes arguments to its predicate backwards
Open
c++26
libc++
lwg-issue
pstl
- Dominant language
- LLVM
- Stars
- 40.5k
- Forks
- 18.7k
- PR merge metrics
- PR metrics pending
Description
**Link:** https://wg21.link/LWG4269
Contributor guide
Research direction
Start with the linked LWG4269 specification issue and locate the C++ standard-library implementation and tests for unique_copy. Confirm the predicate argument order described in the issue, then use the existing unique_copy test coverage to define and verify the corrected behavior.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- compilers
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100