[clang-tools-extra] [clang-tidy] Fix bugprone-tagged-union-member-count false-positive (PR #135831)

[Julian Schmidt via cfe-commits]

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In-Reply-To: <llvm.org/llvm/llvm-project/pull/135831 at github.com>


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@@ -147,3 +148,16 @@ struct Name {\
 
 // CHECK-MESSAGES: :[[@LINE+1]]:44: warning: tagged union has more data members (4) than tags (3)
 DECLARE_TAGGED_UNION_STRUCT(Tags3, Union4, TaggedUnionStructFromMacro);
+
+// Typedefed unions from system header files should be ignored when
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5chmidti wrote:

nit: its not just aliases, all unions from system headers are treated like this

https://github.com/llvm/llvm-project/pull/135831