Revert Microsoft-specific override of the "typedef requires a name"

diagnostic. Instead, put it and the "declaration does not declare
anything" warning into -Wmissing-declarations.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@108527 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/DiagnosticCommonKinds.td

@@ -41,7 +41,8 @@ def err_expected_colon_after_setter_name : Error<
   "must end with ':'">;
 
 // Parse && Sema
-def ext_no_declarators : ExtWarn<"declaration does not declare anything">;
+def ext_no_declarators : ExtWarn<"declaration does not declare anything">,
+  InGroup<MissingDeclarations>;
 def err_param_redefinition : Error<"redefinition of parameter %0">;
 def err_invalid_storage_class_in_func_decl : Error<
   "invalid storage class specifier in function declarator">;

include/clang/Basic/DiagnosticGroups.td

@@ -35,7 +35,7 @@ def : DiagGroup<"declaration-after-statement">;
 def GNUDesignator : DiagGroup<"gnu-designator">;
 def Deprecated : DiagGroup<"deprecated">;
 def : DiagGroup<"disabled-optimization">;
-def : DiagGroup<"discard-qual">;
+def : DiagGroup<"discard-qualgnu">;
 def : DiagGroup<"div-by-zero">;
 def EmptyBody : DiagGroup<"empty-body">;
 def ExtraTokens : DiagGroup<"extra-tokens">;
@@ -57,7 +57,7 @@ def : DiagGroup<"invalid-pch">;
 def LiteralRange : DiagGroup<"literal-range">;
 def : DiagGroup<"main">;
 def MissingBraces : DiagGroup<"missing-braces">;
-def : DiagGroup<"missing-declarations">;
+def MissingDeclarations: DiagGroup<"missing-declarations">;
 def : DiagGroup<"missing-format-attribute">;
 def : DiagGroup<"missing-include-dirs">;
 def : DiagGroup<"missing-noreturn">;

include/clang/Basic/DiagnosticSemaKinds.td

@@ -227,7 +227,8 @@ def err_main_arg_wrong : Error<"%select{first|second|third|fourth}0 "
     "platform-specific data}0) must be of type %1">;
 
 /// parser diagnostics
-def ext_typedef_without_a_name : ExtWarn<"typedef requires a name">;
+def ext_typedef_without_a_name : ExtWarn<"typedef requires a name">,
+  InGroup<MissingDeclarations>;
 def err_typedef_not_identifier : Error<"typedef name must be an identifier">;
 def err_statically_allocated_object : Error<
   "interface type cannot be statically allocated">;

lib/Sema/SemaDecl.cpp

@@ -1550,10 +1550,9 @@ Sema::DeclPtrTy Sema::ParsedFreeStandingDeclSpec(Scope *S, AccessSpecifier AS,
   if (!DS.isMissingDeclaratorOk() &&
       DS.getTypeSpecType() != DeclSpec::TST_error) {
     // Warn about typedefs of enums without names, since this is an
-    // extension in both Microsoft an GNU.
+    // extension in both Microsoft and GNU.
     if (DS.getStorageClassSpec() == DeclSpec::SCS_typedef &&
         Tag && isa<EnumDecl>(Tag)) {
-      if (!getLangOptions().Microsoft)
       Diag(DS.getSourceRange().getBegin(), diag::ext_typedef_without_a_name)
         << DS.getSourceRange();
       return DeclPtrTy::make(Tag);

test/Parser/MicrosoftExtensions.c

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple i386-mingw32 -fsyntax-only -verify -fms-extensions -x objective-c++ %s
+// RUN: %clang_cc1 -triple i386-mingw32 -fsyntax-only -verify -fms-extensions -Wno-missing-declarations -x objective-c++ %s
 __stdcall int func0();
 int __stdcall func();
 typedef int (__cdecl *tptr)();