1 #include <ccan/container_of/container_of.h>
2 #include <stdlib.h>
3 
4 struct foo {
5 	int a;
6 	char b;
7 };
8 
main(void)9 int main(void)
10 {
11 	struct foo foo = { .a = 1, .b = 2 }, *foop;
12 	int *intp = &foo.a;
13 
14 #ifdef FAIL
15 	/* b is a char, but intp is an int * */
16 	foop = container_of(intp, struct foo, b);
17 #else
18 	foop = NULL;
19 #endif
20 	(void) foop; /* Suppress unused-but-set-variable warning. */
21 	return intp == NULL;
22 }
23