lib: import ccan modules for tdb2
[samba.git] / lib / ccan / typesafe_cb / test / compile_fail-typesafe_cb.c
1 #include <ccan/typesafe_cb/typesafe_cb.h>
2 #include <stdlib.h>
3
4 static void _register_callback(void (*cb)(void *arg), void *arg)
5 {
6 }
7
8 #define register_callback(cb, arg)                              \
9         _register_callback(typesafe_cb(void, void *, (cb), (arg)), (arg))
10
11 static void my_callback(char *p)
12 {
13 }
14
15 int main(int argc, char *argv[])
16 {
17         char str[] = "hello world";
18 #ifdef FAIL
19         int *p;
20 #if !HAVE_TYPEOF||!HAVE_BUILTIN_CHOOSE_EXPR||!HAVE_BUILTIN_TYPES_COMPATIBLE_P
21 #error "Unfortunately we don't fail if typesafe_cb_cast is a noop."
22 #endif
23 #else
24         char *p;
25 #endif
26         p = NULL;
27
28         /* This should work always. */
29         register_callback(my_callback, str);
30
31         /* This will fail with FAIL defined */
32         register_callback(my_callback, p);
33         return 0;
34 }