LWG4548: Parallel `ranges::set_intersection` should not do unnecessary work
Open
c++26
libc++
lwg-issue
pstl
ranges
- Dominant language
- LLVM
- Stars
- 40.5k
- Forks
- 18.7k
- PR merge metrics
- PR metrics pending
Description
**Link:** https://wg21.link/LWG4548
Contributor guide
Research direction
Start by reading the linked LWG4548 specification issue and locating the ranges::set_intersection implementation in LLVM's standard-library sources. Determine the expected parallel behavior from that issue, then identify the relevant existing coverage; done means the implementation no longer performs the unnecessary work described by LWG4548 and its behavior is tested.
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
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100