lib/ccan/typesafe_cb/test/compile_ok-typesafe_cb-volatile.c

   1 #include <ccan/typesafe_cb/typesafe_cb.h>
   2 #include <stdlib.h>
   3
   4 /* volatile args in callbacks should be OK. */
   5
   6 static void _register_callback(void (*cb)(void *arg), void *arg)
   7 {
   8 }
   9
  10 #define register_callback(cb, arg)                              \
  11         _register_callback(typesafe_cb(void, (cb), (arg)), (arg))
  12
  13 static void _register_callback_pre(void (*cb)(int x, void *arg), void *arg)
  14 {
  15 }
  16
  17 #define register_callback_pre(cb, arg)                                  \
  18         _register_callback_pre(typesafe_cb_preargs(void, (cb), (arg), int), (arg))
  19
  20 static void _register_callback_post(void (*cb)(void *arg, int x), void *arg)
  21 {
  22 }
  23
  24 #define register_callback_post(cb, arg)                                 \
  25         _register_callback_post(typesafe_cb_postargs(void, (cb), (arg), int), (arg))
  26
  27 static void my_callback(volatile char *p)
  28 {
  29 }
  30
  31 /* FIXME: Can't handle volatile for these */
  32 static void my_callback_pre(int x, /* volatile */ char *p)
  33 {
  34 }
  35
  36 static void my_callback_post(/* volatile */ char *p, int x)
  37 {
  38 }
  39
  40 int main(int argc, char *argv[])
  41 {
  42         char p[] = "hello world";
  43         register_callback(my_callback, p);
  44         register_callback_pre(my_callback_pre, p);
  45         register_callback_post(my_callback_post, p);
  46         return 0;
  47 }