--- /dev/null
+#include <ccan/tlist/tlist.h>
+
+TLIST_TYPE(children, struct child);
+
+struct child {
+ const char *name;
+ struct list_node list;
+};
+
+struct cousin {
+ const char *name;
+ struct list_node list;
+};
+
+int main(int argc, char *argv[])
+{
+ struct tlist_children children;
+ struct child child = { "child" };
+ void *c;
+
+ tlist_init(&children);
+ tlist_add(&children, &child, list);
+
+ c = tlist_top(&children,
+#ifdef FAIL
+#if !HAVE_FLEXIBLE_ARRAY_MEMBER
+#error Need flexible array members to check type
+#endif
+ struct cousin,
+#else
+ struct child,
+#endif
+ list);
+ return 0;
+}