--- /dev/null
+#include <stdio.h>
+
+#include <ccan/bytestring/bytestring.h>
+
+int main(int argc, char *argv[])
+{
+ struct bytestring bs;
+
+ bs = BYTESTRING(
+#ifdef FAIL
+ argv[0]
+#else
+ "literal"
+#endif
+);
+ printf("%zd\n", bs.len);
+ return 0;
+}