lib/ccan/typesafe_cb/test/compile_fail-cast_if_type-promotable.c

   1 #include <ccan/typesafe_cb/typesafe_cb.h>
   2 #include <stdbool.h>
   3
   4 static void _set_some_value(void *val)
   5 {
   6 }
   7
   8 #define set_some_value(expr)                                            \
   9         _set_some_value(typesafe_cb_cast(void *, long, (expr)))
  10
  11 int main(int argc, char *argv[])
  12 {
  13 #ifdef FAIL
  14         bool x = 0;
  15 #if !HAVE_TYPEOF||!HAVE_BUILTIN_CHOOSE_EXPR||!HAVE_BUILTIN_TYPES_COMPATIBLE_P
  16 #error "Unfortunately we don't fail if typesafe_cb_cast is a noop."
  17 #endif
  18 #else
  19         long x = 0;
  20 #endif
  21         set_some_value(x);
  22         return 0;
  23 }