is curl_global_init handled safely? is the library thread-safe?

is the library supposed to be thread safe? note that curl_global_init() is NOT thread-safe, and curl_easy_init is threadsafe ONLY IF curl_global_init() has already been executed. if you start several threads that all call curl_easy_init() at the same time, before curl_global_init has been executed, you may run into problems, how does this reflect on go-curl?