================
@@ -6418,6 +6418,12 @@ def warn_signed_bitfield_enum_conversion : Warning<
InGroup<BitFieldEnumConversion>, DefaultIgnore;
def note_change_bitfield_sign : Note<
"consider making the bitfield type %select{unsigned|signed}0">;
+def warn_ms_bitfield_mismatched_storage_packing : Warning<
+ "bit-field %0 of type %1 has a different storage size (%2 vs %3 bytes) than
the "
+ "preceding bit-field and may not be packed under MSVC ABI">,
+ InGroup<MSBitfieldCompatibility>, DefaultIgnore;
----------------
ojhunt wrote:
ah good point, I'll update msvc references (there are others in the docs) to
say windows platform abi.
I don't believe this should be an on by default warning at all - it's a warning
specifically about difference in packing/padding on a platform you aren't
targeting. In the overwhelming majority of cases that is not something that
matters. For folk actually targeting the windows abi, the existing warnings
will fire (because the sad packing/padding would actually occur).
https://github.com/llvm/llvm-project/pull/117428
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