Move modules to ccan/ tools to tools/

[ccan] / ccan / typesafe_cb / test / compile_fail-typesafe_cb.c

diff --git a/ccan/typesafe_cb/test/compile_fail-typesafe_cb.c b/ccan/typesafe_cb/test/compile_fail-typesafe_cb.c
new file mode 100644 (file)
index 0000000..d305d5f
--- /dev/null
+++ b/ccan/typesafe_cb/test/compile_fail-typesafe_cb.c
@@ -0,0 +1,33 @@
+#include "typesafe_cb/typesafe_cb.h"
+#include <stdlib.h>
+
+static void _register_callback(void (*cb)(void *arg), void *arg)
+{
+}
+
+#define register_callback(cb, arg)                             \
+       _register_callback(typesafe_cb(void, (cb), (arg)), (arg))
+
+static void my_callback(char *p)
+{
+}
+
+int main(int argc, char *argv[])
+{
+#ifdef FAIL
+       int *p;
+#if !HAVE_TYPEOF||!HAVE_BUILTIN_CHOOSE_EXPR||!HAVE_BUILTIN_TYPES_COMPATIBLE_P
+#error "Unfortunately we don't fail if cast_if_type is a noop."
+#endif
+#else
+       char *p;
+#endif
+       p = NULL;
+
+       /* This should work always. */
+       register_callback(my_callback, "hello world");
+
+       /* This will fail with FAIL defined */
+       register_callback(my_callback, p);
+       return 0;
+}