hello:
i use same code complied in g++7.1.0 it run well
but ，it occurs core dump with g++9.0，error message only core dump，
volatile std::atomic<bool> needCancel;
CURL *easyCurlPtr = curl_easy_init();
CURLM *multiCurlPtr = curl_multi_init();
/*
set easyCurlPtr property,like url ,write_data,etc.
*/
do
{
curl_multi_wait(multiCurlPtr, NULL, 0, 2000, NULL);
curl_multi_perform(multiCurlPtr, &running_handlers);
} while (running_handlers > 0 && !needCancel.load());
int msgs_left = 0;
CURLMsg *msg = NULL;
while ((msg = curl_multi_info_read(multiCurlPtr, &msgs_left)) != NULL)
{
if (msg->msg == CURLMSG_DONE)
{
fillResponse(responsePtr, msg->easy_handle);
curl_multi_remove_handle(multiCurlPtr, msg->easy_handle);
curl_easy_cleanup(msg->easy_handle);
}
}
curl_multi_cleanup(multiCurlPtr);<------core dump
________________________________________
when the code go into curl_multi_perform(multiCurlPtr, &running_handlers);
i set needCancel.store(true)
it gets core dump if complied with g++ 9.0,but,it run well with g++ 7.1
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