[clang-tools-extra] [llvm] [clang] [clang] Fix false positive -Wmissing-field-initializer for anonymous unions (PR #70829)

[Mariya Podchishchaeva via cfe-commits]

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@@ -727,6 +729,44 @@ void InitListChecker::FillInEmptyInitForField(unsigned Init, FieldDecl *Field,
     if (hadError || VerifyOnly) {
       // Do nothing
     } else if (Init < NumInits) {
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Fznamznon wrote:

Yes, we still warn for this case.

https://github.com/llvm/llvm-project/pull/70829