Index: clang/lib/Sema/SemaDeclCXX.cpp
===================================================================
--- clang/lib/Sema/SemaDeclCXX.cpp
+++ clang/lib/Sema/SemaDeclCXX.cpp
@@ -14299,10 +14299,7 @@
                                             /* Diagnose */ false);
   }
 
-  // Build an exception specification pointing back at this member.
-  FunctionProtoType::ExtProtoInfo EPI =
-      getImplicitMethodEPI(*this, MoveAssignment);
-  MoveAssignment->setType(Context.getFunctionType(RetType, ArgType, EPI));
+  setupImplicitSpecialMemberType(MoveAssignment, RetType, ArgType);
 
   // Add the parameter to the operator.
   ParmVarDecl *FromParam = ParmVarDecl::Create(Context, MoveAssignment,
Index: clang/test/SemaOpenCLCXX/addrspace-assignment.clcpp
===================================================================
--- /dev/null
+++ clang/test/SemaOpenCLCXX/addrspace-assignment.clcpp
@@ -0,0 +1,16 @@
+// RUN: %clang_cc1 %s -ast-dump -pedantic -verify | FileCheck %s
+
+
+// CHECK: CXXConstructorDecl {{.*}} implicit {{.*}} Implicit 'void (const __generic Implicit &) __generic'
+// CHECK: CXXConstructorDecl {{.*}} implicit {{.*}} Implicit 'void (__generic Implicit &&) __generic'
+// CHECK: CXXMethodDecl {{.*}} implicit {{.*}} operator= '__generic Implicit &(const __generic Implicit &) __generic'
+// CHECK: CXXMethodDecl {{.*}} implicit {{.*}} operator= '__generic Implicit &(__generic Implicit &&) __generic'
+// expected-note@+2{{candidate function (the implicit copy assignment operator) not viable: no known conversion from 'int' to 'const __generic Implicit' for 1st argument}}
+// expected-note@+1{{candidate function (the implicit move assignment operator) not viable: no known conversion from 'int' to '__generic Implicit' for 1st argument}}
+struct Implicit {};
+
+void f() {
+    Implicit i;
+    i = 10; // expected-error{{no viable overloaded '='}}
+}
+