Revert 131347. It asserts if the specialization in within a class template:

template<class U> 
struct X1 {
  template<class T> void f(T*);
  template<> void f(int*) { } 
};

Won't be so simple. I need to think more about it.

llvm-svn: 131362

2 files changed, 6 insertions, 13 deletions

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index 25d23584b8f..93857324a1f 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -1685,14 +1685,10 @@ bool Sema::MergeFunctionDecl(FunctionDecl *New, Decl *OldD) {
     if (OldMethod && NewMethod) {
       // Preserve triviality.
       NewMethod->setTrivial(OldMethod->isTrivial());
-   
-      // MSVC allows explicit template specialization at class scope.
-      bool IsMSExplicitSpecialization = getLangOptions().Microsoft &&
-                                 NewMethod->isFunctionTemplateSpecialization();
+
       bool isFriend = NewMethod->getFriendObjectKind();
 
-      if (!isFriend && NewMethod->getLexicalDeclContext()->isRecord() &&
-          !IsMSExplicitSpecialization) {
+      if (!isFriend && NewMethod->getLexicalDeclContext()->isRecord()) {
         //    -- Member function declarations with the same name and the
         //       same parameter types cannot be overloaded if any of them
         //       is a static member function declaration.
@@ -4573,7 +4569,7 @@ Sema::ActOnFunctionDeclarator(Scope* S, Declarator& D, DeclContext* DC,
         NewFD->setInvalidDecl();
     } else if (isFunctionTemplateSpecialization) {
       if (CurContext->isDependentContext() && CurContext->isRecord() 
-          && !isFriend) {
+          && !isFriend && !getLangOptions().Microsoft) {
         Diag(NewFD->getLocation(), diag::err_function_specialization_in_class)
           << NewFD->getDeclName();
         NewFD->setInvalidDecl();
diff --git a/clang/lib/Sema/SemaTemplate.cpp b/clang/lib/Sema/SemaTemplate.cpp
index 9b14f633013..c31ed017377 100644
--- a/clang/lib/Sema/SemaTemplate.cpp
+++ b/clang/lib/Sema/SemaTemplate.cpp
@@ -4401,12 +4401,9 @@ static bool CheckTemplateSpecializationScope(Sema &S,
   }
 
   if (S.CurContext->isRecord() && !IsPartialSpecialization) {
-    if (S.getLangOptions().Microsoft)
-      S.Diag(Loc, diag::war_template_spec_decl_class_scope) << Specialized;
-    else {    
-      S.Diag(Loc, diag::err_template_spec_decl_class_scope) << Specialized;
-      return true;
-    }
+    S.Diag(Loc, diag::err_template_spec_decl_class_scope)
+      << Specialized;
+    return true;
   }
 
   // C++ [temp.class.spec]p6: