diff -ru a/libsandbox/libsandbox.c b/libsandbox/libsandbox.c
--- a/libsandbox/libsandbox.c	2010-08-16 13:04:14.000000000 +0000
+++ b/libsandbox/libsandbox.c	2010-10-12 17:14:03.000000000 +0000
@@ -174,11 +174,11 @@
 
 		if (NULL == egetcwd(resolved_path, SB_PATH_MAX - 2))
 			return -1;
-		char *copy = xstrdup(resolved_path);
 		size_t len = strlen(resolved_path);
 		snprintf(resolved_path + len, SB_PATH_MAX - len, "/%s", path);
+		char *copy = xstrdup(resolved_path);
 
-		char *ret = erealpath(resolved_path, resolved_path);
+		char *ret = erealpath(copy, resolved_path);
 		free(copy);
 		if (ret == NULL) {
 			if (errno_is_too_long()) {