+
−// { dg-do compile }
+
−// { dg-options "-Wstrict-aliasing=2 -fstrict-aliasing" }
+
−
+
−struct s {
+
−  char    *p;
+
−};
+
−
+
−void
+
−func(struct s *ptr)
+
−{
+
−  *(void **)&ptr->p = 0; /* { dg-warning "type-punned pointer" } */
+
−}