P2900R14 `<contracts>`
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- C++
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Description
WG21-P2900R14 <contracts>
WG21-P3819R0 Remove std::contracts::contract_violation::evaluation_exception()
WG21-P3886R0 __cpp_lib_replaceable_contract_violation_handler
This is a Core paper with Library impact.
The Core feature-test macro is __cpp_contracts. Library feature-test macros:
#define __cpp_lib_contracts 202502L
// If the contract violation handler is replaceable, otherwise 0:
#define __cpp_lib_replaceable_contract_violation_handler 202603L
My VS-PR-738409 taught the IDE about this new extensionless header.
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-P2900R14, WG21-P3819R0, and WG21-P3886R0, then review the listed __cpp_contracts and library feature-test macros. The issue names no source files or tests, and states that PRs for C++26 features are not yet being accepted, so there is no actionable completion path here.
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