Speculatively revert r295118 to see if it's what's causing the modules selfhost buildbots to fail.

llvm-svn: 295146

clang/lib/AST/Type.cpp

@@ -3023,10 +3023,8 @@ static TagDecl *getInterestingTagDecl(TagDecl *decl) {
     if (I->isCompleteDefinition() || I->isBeingDefined())
       return I;
   }
-  // If there's no definition (not even in progress), return the most recent
+  // If there's no definition (not even in progress), return what we have.
-  // declaration. This is important for template specializations, in order to
+  return decl;
-  // pick the declaration with the most complete TemplateSpecializationKind.
-  return decl->getMostRecentDecl();
 }
 
 TagDecl *TagType::getDecl() const {

clang/test/SemaTemplate/explicit-specialization-member.cpp

@@ -57,14 +57,3 @@ template<typename T> struct Helper {
 template<typename T> void Helper<T>::func<2>() {} // expected-error {{cannot specialize a member}} \
                                                   // expected-error {{no function template matches}}
 }
-
-namespace b35070233 {
-  template <typename T> struct Cls {
-    static void f() {}
-  };
-
-  void g(Cls<int>);
-
-  template<> struct Cls<int>; // expected-note {{forward declaration}}
-  template<> void Cls<int>::f(); // expected-error {{incomplete type}}
-}