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url: fix CURLOPT_DNS_CACHE_TIMEOUT arg value check to allow -1

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Prior to this change since f121575 (7.56.1+) CURLOPT_DNS_CACHE_TIMEOUT
erroneously rejected -1 with CURLE_BAD_FUNCTION_ARGUMENT.
This commit is contained in:
Jay Satiro 2017-11-02 00:30:28 -04:00
parent 544bfdebea
commit b51e0742b9
1 changed files with 1 additions and 1 deletions
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2
lib/url.c
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@ -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;