`P0088R3_variant`: Investigate possible Clang bugs
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Description
In #4713, I disabled these parts of P0088R3_variant, but never investigated:
https://github.com/microsoft/STL/blob/26b7ca58ee3151c81736088e554e5797cafca641/tests/std/tests/P0088R3_variant/test.cpp#L1477-L1489
https://github.com/microsoft/STL/blob/26b7ca58ee3151c81736088e554e5797cafca641/tests/std/tests/P0088R3_variant/test.cpp#L4781-L4788
I commented that these appeared to be mirrored in libcxx/expected_results.txt, which are also unsolved mysteries:
https://github.com/microsoft/STL/blob/26b7ca58ee3151c81736088e554e5797cafca641/tests/libcxx/expected_results.txt#L843-L844
https://github.com/microsoft/STL/blob/26b7ca58ee3151c81736088e554e5797cafca641/tests/libcxx/expected_results.txt#L1058-L1059
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 with the disabled sections in tests/std/tests/P0088R3_variant/test.cpp at lines 1477-1489 and 4781-4788, then compare the related entries at lines 843-844 and 1058-1059 in tests/libcxx/expected_results.txt. Investigate whether these cases expose Clang bugs and document a clear resolution for each unexplained entry.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- compilers, testing-qa
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Needs clarification
- Newbie friendliness
- 42/100