[all-commits] [llvm/llvm-project] 5ae577: [Sema] Fix handling of fields with initializers in...

[Eli Friedman via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 5ae5774fb0b5cac11af479b0905dfdd5255b4047
      https://github.com/llvm/llvm-project/commit/5ae5774fb0b5cac11af479b0905dfdd5255b4047
  Author: Eli Friedman <efriedma at quicinc.com>
  Date:   2024-06-04 (Tue, 04 Jun 2024)

  Changed paths:
    M clang/lib/Sema/SemaInit.cpp
    M clang/test/AST/ast-dump-APValue-anon-union.cpp
    M clang/test/SemaCXX/cxx1y-initializer-aggregates.cpp

  Log Message:
  -----------
  [Sema] Fix handling of fields with initializers in nested anonymous unions. (#91692)

Make sure we count the anonymous union as an initialized field, so we
properly construct the AST.

Included bonus testcase Test3, which shows a remaining gap: an anonymous
union can contain a partially initialized anonymous struct, and we
handle that inconsistently.

Fixes #91257



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