diff --git a/lib/AST/DeclarationName.cpp b/lib/AST/DeclarationName.cpp
index 044acd7..ae579c2 100644
--- a/lib/AST/DeclarationName.cpp
+++ b/lib/AST/DeclarationName.cpp
@@ -286,9 +286,11 @@
   switch (Kind) {
   case DeclarationName::CXXConstructorName: 
     EKind = DeclarationNameExtra::CXXConstructor;
+    assert(Ty.getCVRQualifiers() == 0 && "Constructor type must be unqualified");
     break;
   case DeclarationName::CXXDestructorName:
     EKind = DeclarationNameExtra::CXXDestructor;
+    assert(Ty.getCVRQualifiers() == 0 && "Destructor type must be unqualified");
     break;
   case DeclarationName::CXXConversionFunctionName:
     EKind = DeclarationNameExtra::CXXConversionFunction;
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index 26ef1bd..7ef7d85 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -1115,7 +1115,7 @@
     CXXRecordDecl *ToRecordDecl = ToRecordType->getDecl();
     DeclarationName ConstructorName 
       = Context.DeclarationNames.getCXXConstructorName(
-                                             Context.getCanonicalType(ToType));
+                        Context.getCanonicalType(ToType).getUnqualifiedType());
     DeclContext::lookup_iterator Con, ConEnd;
     for (llvm::tie(Con, ConEnd) = ToRecordDecl->lookup(ConstructorName);
          Con != ConEnd; ++Con) {
diff --git a/test/SemaCXX/overloaded-operator.cpp b/test/SemaCXX/overloaded-operator.cpp
index bc47383..d8be6bc 100644
--- a/test/SemaCXX/overloaded-operator.cpp
+++ b/test/SemaCXX/overloaded-operator.cpp
@@ -172,3 +172,14 @@
   int &i2 = a2->m;
   a3->m; // expected-error{{no viable overloaded 'operator->'; candidate is}}
 }
+
+struct CopyConBase {
+};
+
+struct CopyCon : public CopyConBase {
+  CopyCon(const CopyConBase &Base);
+
+  CopyCon(const CopyConBase *Base) {
+    *this = *Base;
+  }
+};