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[Support] [Windows] Silence warnings about anonymous unions (#188534)

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When building in mingw mode with Clang, we currently get the
following warnings:

    llvm-project/llvm/lib/Support/Windows/Path.inc:1720:5: warning: anonymous types declared in an anonymous union are an extension [-Wnested-anon-types]
     1720 |     struct {
          |     ^
    llvm-project/llvm/lib/Support/Windows/Path.inc:1728:5: warning: anonymous types declared in an anonymous union are an extension [-Wnested-anon-types]
     1728 |     struct {
          |     ^

Since these declarations mirror parts of the Microsoft SDKs, we
don't want to deviate from it needlessly; instead add a pragma
to silence this diagnostic for this specific area.
This commit is contained in:
Martin Storsjö 2026-03-25 23:41:41 +02:00 committed by GitHub
parent 9a8b8153be
commit acef4cc2d7
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7
llvm/lib/Support/Windows/Path.inc
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@ -1710,6 +1710,10 @@ std::error_code real_path(const Twine &path, SmallVectorImpl<char> &dest,
return std::error_code();
}
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wnested-anon-types"
#endif
// This struct is normally only available in the Windows Driver Kit (WDK)
// headers, not in the standard Windows SDK.
struct LLVM_REPARSE_DATA_BUFFER {
@ -1737,6 +1741,9 @@ struct LLVM_REPARSE_DATA_BUFFER {
} GenericReparseBuffer;
};
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
std::error_code readlink(const Twine &path, SmallVectorImpl<char> &dest) {
dest.clear();