[all-commits] [llvm/llvm-project] c9074c: Reapply "[Clang] Fix a number of issues involving ...

[Ambrose Leeb via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: c9074cfd0d956c0d3433eb2aea4adc899edc9887
      https://github.com/llvm/llvm-project/commit/c9074cfd0d956c0d3433eb2aea4adc899edc9887
  Author: Ambrose Leeb <aleeb at nvidia.com>
  Date:   2026-09-18 (Fri, 18 Sep 2026)

  Changed paths:
    M clang/include/clang/AST/DeclBase.h
    M clang/include/clang/AST/DeclCXX.h
    M clang/lib/AST/Decl.cpp
    M clang/lib/Sema/SemaChecking.cpp
    M clang/lib/Sema/SemaCoroutine.cpp
    M clang/lib/Sema/SemaDecl.cpp
    M clang/lib/Sema/SemaDeclCXX.cpp
    M clang/lib/Sema/SemaExpr.cpp
    M clang/test/Parser/cxx2c-expansion-statements.cpp
    M clang/test/SemaCXX/cxx2c-expansion-stmts-control-flow.cpp
    A clang/test/SemaCXX/cxx2c-expansion-stmts-warnings.cpp
    M clang/test/SemaCXX/cxx2c-expansion-stmts.cpp
    M clang/test/SemaCXX/expansion-statements-local-extern-decls.cpp
    A clang/test/SemaCXX/expansion-statements-local-extern-if-constexpr.cpp

  Log Message:
  -----------
  Reapply "[Clang] Fix a number of issues involving expansion statements" (#220375) (#223005)

This reverts 7c44c505cd7688a8994779f1751e0f9b4b95ab4c and relands
#217110.

There were two tests that needed updating: one because a warning that
had previously been erroneously suppressed (because we thought we
weren’t in a function) now works properly, and another because it
crashes due to an unrelated bug. I’ve filed #223003 for the latter and
moved the crash into a separate XFAIL test so it can be reenabled when
the bug is fixed.

The plan was to backport this to the 23 release branch, so still no
release note.



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