P3068R6 Allowing Exception Throwing In Constant Evaluation
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- C++
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Description
WG21-P3068R6 Allowing Exception Throwing In Constant Evaluation
WG21-P3842R2 Revert constexpr uncaught_exceptions(), current_exception(), nested_exception
LWG-4477 Placement operator delete should be constexpr
This is a Core feature with significant Library impact, including VCRuntime.
Feature-test macro, later increased by #5297:
#define __cpp_lib_constexpr_exceptions 202411L
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-P3068R6 and the related WG21-P3842R2 and LWG-4477 proposals; the issue provides no files, tests, or implementation entry point. The feature-test macro is __cpp_lib_constexpr_exceptions, but 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
- compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100