lib: import ccan modules for tdb2

Imported from git://git.ozlabs.org/~ccan/ccan init-1161-g661d41f

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/ccan/cast/test/compile_ok-cast_void.c b/lib/ccan/cast/test/compile_ok-cast_void.c
new file mode 100644
index 00000000000..c649d283b3b
--- /dev/null
+++ b/lib/ccan/cast/test/compile_ok-cast_void.c
@@ -0,0 +1,12 @@
+#include <ccan/cast/cast.h>
+
+static void *remove_void(const void *p)
+{
+	return cast_const(void *, p);
+}
+
+int main(void)
+{
+	void *p = remove_void("foo");
+	return !p;
+}