1 /* Test a ADT where a struct member is a pointer to
2  * itself.
3  * gcc -gctf -c test-callback.c -o test-callback.o
4  */
5 
6 struct rb_node_b {
7   struct rb_node_b *this;
8   int a;
9 };
10 
11 struct rb_node_b n1, n2;
12