1 extern void (*kargp_program_version_hook) ();
2 
3 void
bs()4 bs() {
5 	puts("this is bs");
6 }
7 
main()8 int main()
9 {
10 	kargp_program_version_hook = bs;
11 	(*kargp_program_version_hook) ();
12 }
13 
14 void (*kargp_program_version_hook) ();
15