Thank you very much, I appreciate your help.

Viktor

> -----Original Message-----
> From: dan_at_coneharvesters.com
> Sent: Wed, 23 Jun 2010 23:41:24 -0700
> To: curl-library_at_cool.haxx.se
> Subject: Re: curl library bug
>
> On Wed, Jun 23, 2010 at 10:20:17PM -0800, Viktor Molnar wrote:
>> Thank you for your reply.
>> I know about the possible segfaults, but if you try my example
>> from my original message, you will see the problem. This segfault
>> is rised when timeout is reached. That's why is timeout set to 1 in
>> my example from original message. In example, http://www.alza.sk is
>> used,
>> because on this site, timeout is reached. To be more specific about the
>> segfault, here is gdb output:
>>
>> Core was generated by `./a.out'.
>> Program terminated with signal 11, Segmentation fault.
>> #0 0xb7745c79 in addbyter () from /usr/lib/libcurl.so.4
>> (gdb) where
>> #0 0xb7745c79 in addbyter () from /usr/lib/libcurl.so.4
>> #1 0xb7746eff in dprintf_formatf () from /usr/lib/libcurl.so.4
>> #2 0xb7747760 in curl_mvsnprintf () from /usr/lib/libcurl.so.4
>> #3 0xb7745e02 in curl_msnprintf () from /usr/lib/libcurl.so.4
>> #4 0xb7734e66 in Curl_failf () from /usr/lib/libcurl.so.4
>> #5 0xb772a5f4 in Curl_resolv_timeout () from /usr/lib/libcurl.so.4
>> #6 0xb6bc7d90 in ?? ()
>> Backtrace stopped: previous frame inner to this frame (corrupt stack?)
>
> Ahah. DNS timeouts and multithreaded apps have some issues. To quote the
> libcurl-tutorial, "When using multiple threads you should set the
> CURLOPT_NOSIGNAL option to TRUE for all handles." Also, timeouts during
> DNS using the native DNS resolver without configuring with
> --enable-threaded-resolver can cause problems (e.g. segfaults) on some
> platforms.
>
>>>> Dan
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Received on 2010-06-24