[clang] [CLANG] Enable alignas after GNU attributes (PR #133107)

[via cfe-commits]

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@@ -3035,10 +3035,13 @@ Parser::DeclGroupPtrTy Parser::ParseCXXClassMemberDeclaration(
   }
 
   ParsedAttributes DeclSpecAttrs(AttrFactory);
-  MaybeParseMicrosoftAttributes(DeclSpecAttrs);
-
   // Hold late-parsed attributes so we can attach a Decl to them later.
   LateParsedAttrList CommonLateParsedAttrs;
+  while (MaybeParseCXX11Attributes(DeclAttrs) ||
+         MaybeParseGNUAttributes(DeclSpecAttrs, &CommonLateParsedAttrs)) {
+  }
+
+  MaybeParseMicrosoftAttributes(DeclSpecAttrs);
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DenisGZM wrote:

Haven't tried to process all attributes, just wanted to keep order if any unknown rules exist. I'll try to test it asap
 
`MaybeParseAttributes` will parse all attributes in one container, but I think here we want to separate `DeclAttrs` and `DeclSpecAttrs`

https://github.com/llvm/llvm-project/pull/133107