git.ozlabs.org Git - ccan/blob - ccan/typesafe_cb/test/compile_fail-typesafe_cb_postargs.c

   1 #include <ccan/typesafe_cb/typesafe_cb.h>
   2 #include <stdlib.h>
   3
   4 static void _register_callback(void (*cb)(void *arg, int x), void *arg)
   5 {
   6 }
   7 #define register_callback(cb, arg)                              \
   8         _register_callback(typesafe_cb_postargs(void, void *, (cb), (arg), int), (arg))
   9
  10 static void my_callback(char *p, int x)
  11 {
  12 }
  13
  14 int main(int argc, char *argv[])
  15 {
  16 #ifdef FAIL
  17         int *p;
  18 #if !HAVE_TYPEOF||!HAVE_BUILTIN_CHOOSE_EXPR||!HAVE_BUILTIN_TYPES_COMPATIBLE_P
  19 #error "Unfortunately we don't fail if typesafe_cb_cast is a noop."
  20 #endif
  21 #else
  22         char *p;
  23 #endif
  24         p = NULL;
  25         register_callback(my_callback, p);
  26         return 0;
  27 }