[all-commits] [llvm/llvm-project] b6a340: [clang] Respect field alignment in layout compatib...

[Vlad Serebrennikov via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b6a340023d383d1e77cb8d91d92c096f791fa8c0
      https://github.com/llvm/llvm-project/commit/b6a340023d383d1e77cb8d91d92c096f791fa8c0
  Author: Vlad Serebrennikov <serebrennikov.vladislav at gmail.com>
  Date:   2024-03-08 (Fri, 08 Mar 2024)

  Changed paths:
    M clang/docs/ReleaseNotes.rst
    M clang/lib/Sema/SemaChecking.cpp
    M clang/test/CXX/drs/dr25xx.cpp
    M clang/test/SemaCXX/type-traits.cpp
    M clang/www/cxx_dr_status.html

  Log Message:
  -----------
  [clang] Respect field alignment in layout compatibility of structs (#84313)

This patch implements
[CWG2586](https://cplusplus.github.io/CWG/issues/2583.html) "Common
initial sequence should consider over-alignment". Note that alignment of
union members doesn't have to match, as layout compatibility of unions
is not defined in terms of common initial sequence
(http://eel.is/c++draft/class.mem.general#25).



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