tlist: Add tlist_next() and tlist_prev() functions

[ccan] / ccan / tlist / test / compile_fail-tlist_prev2.c

diff --git a/ccan/tlist/test/compile_fail-tlist_prev2.c b/ccan/tlist/test/compile_fail-tlist_prev2.c
new file mode 100644 (file)
index 0000000..c1a536d
--- /dev/null
+++ b/ccan/tlist/test/compile_fail-tlist_prev2.c
@@ -0,0 +1,32 @@
+#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" };
+#ifdef FAIL
+#if !HAVE_FLEXIBLE_ARRAY_MEMBER
+#error Need flexible array members to check type
+#endif
+       struct cousin *p = NULL;
+#else
+       struct child *p = NULL;
+#endif
+
+       tlist_init(&children);
+       tlist_add(&children, &child, list);
+       (void)tlist_prev(&children, p, list);
+       return 0;
+}