X-Git-Url: http://git.ozlabs.org/?p=ccan;a=blobdiff_plain;f=ccan%2Ftypesafe_cb%2Ftest%2Fcompile_fail-typesafe_cb.c;fp=ccan%2Ftypesafe_cb%2Ftest%2Fcompile_fail-typesafe_cb.c;h=d305d5fb1101fc1c3a242346f97a5218fd166744;hp=0000000000000000000000000000000000000000;hb=650c775ff00cccd03fc84e7789a03c51d9839004;hpb=c8acddea39d222312102952e91c32cfe4dd2cea0

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
index 00000000..d305d5fb
--- /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;
+}