From: Frank M. Kromann <fmk@php.net>
Date: Fri, 6 Dec 2002 22:52:31 +0000 (+0000)
Subject: Fixing a possible strcat on a NULL pointer
X-Git-Tag: RELEASE_1_0b3~136
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=0d812352be41478085bdc18cd5fb9dc5fcfd5297;p=php

Fixing a possible strcat on a NULL pointer
---

diff --git a/ext/imap/php_imap.c b/ext/imap/php_imap.c
index de4bb1e162..4bfcafdad5 100644
--- a/ext/imap/php_imap.c
+++ b/ext/imap/php_imap.c
@@ -3222,7 +3222,8 @@ int _php_imap_mail(char *to, char *subject, char *message, char *headers, char *
 		}
 	}
 
-	strcat(bufferHeader, headers);
+	if (headers && *headers)
+		strcat(bufferHeader, headers);
 
 	if (TSendMail(INI_STR("SMTP"), &tsm_err, &tsm_errmsg, bufferHeader, subject, bufferTo, message, bufferCc, bufferBcc, rpath) != SUCCESS) {
 		if (tsm_errmsg) {