1 #include <ccan/container_of/container_of.h>
2 #include <ccan/tap/tap.h>
3
4 struct foo {
5 int a;
6 char b;
7 };
8
main(int argc,char * argv[])9 int __attribute__((const)) main(int argc, char *argv[])
10 {
11 struct foo foo = { .a = 1, .b = 2 };
12 int *intp = &foo.a;
13 char *charp = &foo.b;
14
15 (void)argc;
16 (void)argv;
17
18 plan_tests(6);
19 ok1(container_of(intp, struct foo, a) == &foo);
20 ok1(container_of(charp, struct foo, b) == &foo);
21 ok1(container_of_var(intp, &foo, a) == &foo);
22 ok1(container_of_var(charp, &foo, b) == &foo);
23
24 ok1(container_off(struct foo, a) == 0);
25 ok1(container_off(struct foo, b) == offsetof(struct foo, b));
26 return exit_status();
27 }
28