From 87cf98b2fbb62c4f145ae88e7c6b415c037c387d Mon Sep 17 00:00:00 2001
From: djm <djm@openbsd.org>
Date: Sun, 18 Jan 2015 19:50:55 +0000
Subject: [PATCH] better dumps from the fuzzer (shown on errors) - include the
 original data as well as the fuzzed copy.

---
 .../usr.bin/ssh/unittests/test_helper/fuzz.c  | 32 ++++++++++++-------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/regress/usr.bin/ssh/unittests/test_helper/fuzz.c b/regress/usr.bin/ssh/unittests/test_helper/fuzz.c
index b9a2fecace1..2003fbe504f 100644
--- a/regress/usr.bin/ssh/unittests/test_helper/fuzz.c
+++ b/regress/usr.bin/ssh/unittests/test_helper/fuzz.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fuzz.c,v 1.5 2015/01/13 14:51:51 djm Exp $	*/
+/*	$OpenBSD: fuzz.c,v 1.6 2015/01/18 19:50:55 djm Exp $	*/
 /*
  * Copyright (c) 2011 Damien Miller <djm@mindrot.org>
  *
@@ -150,19 +150,11 @@ fuzz_fmt(struct fuzz *fuzz, char *s, size_t n)
 	}
 }
 
-void
-fuzz_dump(struct fuzz *fuzz)
+static void
+dump(u_char *p, size_t len)
 {
-	u_char *p = fuzz_ptr(fuzz);
-	size_t i, j, len = fuzz_len(fuzz);
-	char buf[256];
+	size_t i, j;
 
-	if (fuzz_fmt(fuzz, buf, sizeof(buf)) != 0) {
-		fprintf(stderr, "%s: fuzz invalid\n", __func__);
-		abort();
-	}
-	fputs(buf, stderr);
-	fprintf(stderr, "fuzz context %p len = %zu\n", fuzz, len);
 	for (i = 0; i < len; i += 16) {
 		fprintf(stderr, "%.4zd: ", i);
 		for (j = i; j < i + 16; j++) {
@@ -184,6 +176,22 @@ fuzz_dump(struct fuzz *fuzz)
 	}
 }
 
+void
+fuzz_dump(struct fuzz *fuzz)
+{
+	char buf[256];
+
+	if (fuzz_fmt(fuzz, buf, sizeof(buf)) != 0) {
+		fprintf(stderr, "%s: fuzz invalid\n", __func__);
+		abort();
+	}
+	fputs(buf, stderr);
+	fprintf(stderr, "fuzz original %p len = %zu\n", fuzz->seed, fuzz->slen);
+	dump(fuzz->seed, fuzz->slen);
+	fprintf(stderr, "fuzz context %p len = %zu\n", fuzz, fuzz_len(fuzz));
+	dump(fuzz_ptr(fuzz), fuzz_len(fuzz));
+}
+
 #ifdef SIGINFO
 static struct fuzz *last_fuzz;
 
-- 
2.20.1