[clang] assume_aligned incorrectly diagnoses a dependent return type

Author: AmrDeveloper

clang/lib/Sema/SemaDeclAttr.cpp

@@ -1217,6 +1217,8 @@ static void handlePreferredName(Sema &S, Decl *D, const ParsedAttr &AL) {
 
 bool Sema::isValidPointerAttrType(QualType T, bool RefOkay) {
   if (RefOkay) {
+    if (T->isDependentType())
+      return true;
     if (T->isReferenceType())
       return true;
   } else {

clang/test/SemaCXX/builtin-assume-aligned-tmpl.cpp

@@ -52,6 +52,9 @@ T *atest3() __attribute__((assume_aligned(31, o))); // expected-error {{requeste
 template <typename T, int o>
 T *atest4() __attribute__((assume_aligned(32, o)));
 
+template<typename T>
+T atest5(int) __attribute__((assume_aligned(2)));
+
 void test22() {
   atest3<int, 5>();
   atest4<int, 5>();