[all-commits] [llvm/llvm-project] 4f2dba: [clang] Add tests for some CWG issues from 2024-05...

[Vlad Serebrennikov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 4f2dba3c0b4e5f11b968a840b5f70070f5288cfe
      https://github.com/llvm/llvm-project/commit/4f2dba3c0b4e5f11b968a840b5f70070f5288cfe
  Author: Vlad Serebrennikov <serebrennikov.vladislav at gmail.com>
  Date:   2024-06-03 (Mon, 03 Jun 2024)

  Changed paths:
    M clang/test/CXX/drs/cwg28xx.cpp
    M clang/www/cxx_dr_status.html

  Log Message:
  -----------
  [clang] Add tests for some CWG issues from 2024-05-31 telecon (#94167)

This patch adds tests for some CWG issues that were discussed at
2024-05-31 telecon. While all of them are tentatively ready at the
moment, I'm expecting them to be moved to DRs without changes. CWG
issues that are expected to have follow-ups are not included in this PR.

I also realized that `cwg28xx.cpp` has been testing without
`-pedantic-errors`. I fixed that. Fortunately, no existing tests had
anything hidden by the lack of this flag.

The following CWG issues are covered:
[CWG2877](https://cplusplus.github.io/CWG/issues/2877.html) "Type-only
lookup for _using-enum-declarator_"
[CWG2882](https://cplusplus.github.io/CWG/issues/2882.html) "Unclear
treatment of conversion to `void`"
[CWG2883](https://cplusplus.github.io/CWG/issues/2883.html) "Definition
of "odr-usable" ignores lambda scopes"
[CWG2885](https://cplusplus.github.io/CWG/issues/2885.html)
"Non-eligible trivial default constructors"
[CWG2886](https://cplusplus.github.io/CWG/issues/2886.html) "Temporaries
and trivial potentially-throwing special member functions"



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