--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/diagnostic/aka2.C	Thu Oct 25 07:37:49 2018 +0900
@@ -0,0 +1,32 @@
+/* Verify that the "aka" descriptions for typedefs are correctly
+   quoted (PR 62170).  */
+
+/* Exercise %H and %I.  */
+
+typedef struct s1 t1;
+typedef struct s2 {int i;} t2;
+
+int foo(t1 *);
+
+void test_1 () {
+  t2 pos;
+
+  foo (&pos); // { dg-error "cannot convert 't2\\*' {aka 's2\\*'} to 't1\\*' {aka 's1\\*'}" }
+}
+
+/* Exercise %T.  */
+
+typedef struct s3
+{  
+  void m3 ();
+} t3;
+
+void test_2 (const s3 *ptr)
+{
+  ptr->m3 (); // { dg-error "passing 'const s3' as 'this' argument discards qualifiers" }
+}
+
+void test_3 (const t3 *ptr)
+{
+  ptr->m3 (); // { dg-error "passing 'const t3' {aka 'const s3'} as 'this' argument discards qualifiers" }
+}