From: Jay Satiro <raysatiro@yahoo.com>
Date: Thu, 2 Nov 2017 04:30:28 +0000 (-0400)
Subject: url: fix CURLOPT_DNS_CACHE_TIMEOUT arg value check to allow -1
X-Git-Tag: curl-7_57_0~70
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b51e0742b9349c6414956570c76a2152f5b22106;p=curl

url: fix CURLOPT_DNS_CACHE_TIMEOUT arg value check to allow -1

Prior to this change since f121575 (7.56.1+) CURLOPT_DNS_CACHE_TIMEOUT
erroneously rejected -1 with CURLE_BAD_FUNCTION_ARGUMENT.
---

diff --git a/lib/url.c b/lib/url.c
index c334578ea..2e801e58f 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -722,7 +722,7 @@ CURLcode Curl_setopt(struct Curl_easy *data, CURLoption option,
   switch(option) {
   case CURLOPT_DNS_CACHE_TIMEOUT:
     arg = va_arg(param, long);
-    if(arg < 0)
+    if(arg < -1)
       return CURLE_BAD_FUNCTION_ARGUMENT;
     data->set.dns_cache_timeout = arg;
     break;