P1901R2 Enabling The Use Of `weak_ptr` As Keys In Unordered Associative Containers
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cxx26
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Description
WG21-P1901R2 Enabling The Use Of weak_ptr As Keys In Unordered Associative Containers
Feature-test macro (renamed by https://github.com/cplusplus/draft/commit/7fb62d5f50bfbfc159df4ca0af932ee82d26bc41):
#define __cpp_lib_smart_ptr_owner_equality 202306L
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-P1901R2 and the linked C++ draft commit for the renamed feature-test macro. The issue names no implementation files or tests; completion would require implementing the proposal and defining __cpp_lib_smart_ptr_owner_equality as specified. Note that the issue says PRs for C++26 features 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
- Mostly clear
- Newbie friendliness
- 25/100