llvm / llvm/llvm-project

LWG4297: Missing `permutable` constraint for iterator overloads in Parallel Range Algorithms

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c++26 libc++ lwg-issue pstl ranges
Dominant language
LLVM
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Description

**Link:** https://wg21.link/LWG4297

Contributor guide

Open the contributing guide

Research direction

Start with the linked LWG4297 specification issue and compare its requirements with the parallel range algorithm iterator overloads. Locate the affected overloads and existing constraint tests in the LLVM project, then confirm that the required permutable constraint is enforced and covered by tests.

Written by the indexing model from the issue text.

Assessment

Domain
compilers
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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