[all-commits] [llvm/llvm-project] 924701: [SemaCXX] Implement CWG2137 (list-initialization f...

[Mital Ashok via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 924701311aa79180e86ad8ce43d253f27d25ec7d
      https://github.com/llvm/llvm-project/commit/924701311aa79180e86ad8ce43d253f27d25ec7d
  Author: Mital Ashok <mital at mitalashok.co.uk>
  Date:   2024-01-19 (Fri, 19 Jan 2024)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaInit.cpp
    M clang/lib/Sema/SemaOverload.cpp
    M clang/test/CXX/drs/dr14xx.cpp
    M clang/test/CXX/drs/dr21xx.cpp
    M clang/test/CXX/drs/dr23xx.cpp
    M clang/www/cxx_dr_status.html
    M libcxx/test/std/utilities/utility/pairs/pairs.pair/ctor.pair_U_V_move.pass.cpp

  Log Message:
  -----------
  [SemaCXX] Implement CWG2137 (list-initialization from objects of the same type) (#77768)

Closes #77638, #24186

Rebased from <https://reviews.llvm.org/D156032>, see there for more
information.

Implements wording change in [CWG2137](https://wg21.link/CWG2137) in the
first commit.

This also implements an approach to [CWG2311](https://wg21.link/CWG2311)
in the second commit, because too much code that relies on `T{ T_prvalue}` 
being an elision would break. Because that issue is still open and
the CWG issue doesn't provide wording to fix the issue, there may be
different behaviours on other compilers.