LWG4255: `move_only_function` constructor should recognize empty `copyable_function`s
Open
c++26
libc++
lwg-issue
- Dominant language
- LLVM
- Stars
- 40.5k
- Forks
- 18.7k
- PR merge metrics
- PR metrics pending
Description
**Link:** https://wg21.link/LWG4255
Contributor guide
Research direction
Start with the linked LWG4255 specification, then locate the standard-library implementations of move_only_function and copyable_function. Add or adjust focused tests for the empty-function case; done means the constructor behavior matches the issue's specified recognition of empty copyable_function values.
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
- 25/100