git.ozlabs.org Git - ccan/blob - ccan/tlist/test/compile_fail-tlist_top.c

   1 #include <ccan/tlist/tlist.h>
   2
   3 TLIST_TYPE(children, struct child);
   4
   5 struct child {
   6         const char *name;
   7         struct list_node list;
   8 };
   9
  10 struct cousin {
  11         const char *name;
  12         struct list_node list;
  13 };
  14
  15 int main(int argc, char *argv[])
  16 {
  17         struct tlist_children children;
  18         struct child child = { "child" };
  19         void *c;
  20
  21         tlist_init(&children);
  22         tlist_add(&children, &child, list);
  23
  24         c = tlist_top(&children,
  25 #ifdef FAIL
  26 #if !HAVE_FLEXIBLE_ARRAY_MEMBER
  27 #error Need flexible array members to check type
  28 #endif
  29                       struct cousin,
  30 #else
  31                       struct child,
  32 #endif
  33                       list);
  34         (void) c; /* Suppress unused-but-set-variable warning. */
  35         return 0;
  36 }