Suppress the "typedef requires a name" warning in Microsoft-extensions mode

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108526 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Sema/SemaDecl.cpp

@@ -1553,8 +1553,9 @@ Sema::DeclPtrTy Sema::ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS,
     // extension in both Microsoft an GNU.
     if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef &&
         Tag && isa<EnumDecl>(Tag)) {
-      Diag(DS.getSourceRange().getBegin(), diag::ext_typedef_without_a_name)
-        << DS.getSourceRange();
+      if (!getLangOptions().Microsoft)
+        Diag(DS.getSourceRange().getBegin(), diag::ext_typedef_without_a_name)
+          << DS.getSourceRange();
       return DeclPtrTy::make(Tag);
     }
 

test/Parser/MicrosoftExtensions.c

@@ -34,3 +34,4 @@ typedef bool (__stdcall __stdcall *blarg)(int);
 #define FOO(x) #@x
 char x = FOO(a);
 
+typedef enum E { e1 };