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<td class='lines'><pre><code>From 9b5f70b93e038df5446bd37a4adac5a0380748e7 Mon Sep 17 00:00:00 2001
From: johannes &lt;johannes.brechtmann@gmail.com&gt;
Date: Wed, 21 Feb 2018 23:57:11 +0100
Subject: [PATCH] crypt_checkpass: include HAVE_CRYPT_H definition, add NULL
 check

---
 openbsd-compat/crypt_checkpass.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/openbsd-compat/crypt_checkpass.c b/openbsd-compat/crypt_checkpass.c
index dafd2dae..d10b3a57 100644
--- a/openbsd-compat/crypt_checkpass.c
+++ b/openbsd-compat/crypt_checkpass.c
@@ -1,5 +1,6 @@
 /* OPENBSD ORIGINAL: lib/libc/crypt/cryptutil.c */
 
+#include "includes.h"
 #include &lt;errno.h&gt;
 #ifdef HAVE_CRYPT_H
 #include &lt;crypt.h&gt;
@@ -10,6 +11,8 @@
 int
 crypt_checkpass(const char *pass, const char *goodhash)
 {
+	char *c;
+
 	if (goodhash == NULL)
 		goto fail;
 
@@ -17,7 +20,11 @@ crypt_checkpass(const char *pass, const char *goodhash)
 	if (strlen(goodhash) == 0 &amp;&amp; strlen(pass) == 0)
 		return 0;
 
-	if (strcmp(crypt(pass, goodhash), goodhash) == 0)
+	c = crypt(pass, goodhash);
+	if (c == NULL)
+		goto fail;
+
+	if (strcmp(c, goodhash) == 0)
 		return 0;
 
 fail:

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