diff -Naur -x '*~' john-1.7.3.1/src/recovery.c john-1.7.3.1-fix-format-errors/src/recovery.c
--- john-1.7.3.1/src/recovery.c	2006-02-27 05:12:05.000000000 +0100
+++ john-1.7.3.1-fix-format-errors/src/recovery.c	2009-09-13 16:02:20.000000000 +0200
@@ -157,7 +157,7 @@
 static void rec_format_error(char *fn)
 {
 	if (ferror(rec_file))
-		pexit(fn);
+		pexit("%s", fn);
 	else {
 		fprintf(stderr, "Incorrect crash recovery file format: %s\n",
 			path_expand(rec_name));