1 /* Origin: Joseph Myers <jsm28@cam.ac.uk>.  */
2 /* As an extension, GCC allows a struct or union to be cast to its own
3    type, but failed to allow this when a typedef was involved.
4    Reported as PR c/2735 by <cowan@ccil.org>.  */
5 union u { int i; };
6 typedef union u uu;
7 union u a;
8 uu b;
9 
10 void
foo(void)11 foo (void)
12 {
13   a = (union u) b;
14   a = (uu) b;
15   b = (union u) a;
16   b = (uu) a;
17 }
18