P3111R8 Atomic Reduction Operations
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cxx26
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- C++
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Description
WG21-P3111R8 Atomic Reduction Operations
LWG-4450 std::atomic_ref<T>::store_key should be disabled for const T
Feature-test macro:
#define __cpp_lib_atomic_reductions 202506L
Note: We are not yet accepting PRs for C++26 features.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by reading WG21-P3111R8 and the linked LWG-4450 requirement in this issue. Identify the implementation and tests for the proposed atomic reduction operations, including the feature-test macro and the const-T restriction; done means the C++26 behavior is implemented and validated, although the issue says PRs are not yet being accepted.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- tooling
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100