Index: sys/boot/userboot/test/test.c
===================================================================
--- sys/boot/userboot/test/test.c
+++ sys/boot/userboot/test/test.c
@@ -36,6 +36,7 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
+#include <inttypes.h>
 #include <limits.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -292,6 +293,7 @@
 	if (to + size > image_size)
 		size = image_size - to;
 	memcpy(&image[to], from, size);
+	return (0);
 }
 
 int
@@ -304,6 +306,7 @@
 	if (from + size > image_size)
 		size = image_size - from;
 	memcpy(to, &image[from], size);
+	return (0);
 }
 
 void
@@ -333,7 +336,7 @@
 void
 test_exec(void *arg, uint64_t pc)
 {
-	printf("Execute at 0x%llx\n", pc);
+	printf("Execute at 0x%" PRIu64 "\n", pc);
 	test_exit(arg, 0);
 }
 
@@ -411,7 +414,7 @@
 usage()
 {
 
-	printf("usage: %s [-d <disk image path>] [-h <host filesystem path>\n");
+	printf("usage: [-d <disk image path>] [-h <host filesystem path>\n");
 	exit(1);
 }