The openssl_locking_func() callback can be invoked through

OpenSSL_add_ssl_algorithms(), which causes instance() to be called
recursively before the static shared_ptr was initialized.


[SVN r35942]

include/boost/asio/ssl/detail/openssl_init.hpp

@@ -46,13 +46,12 @@ private:
       {
         ::SSL_library_init();
         ::SSL_load_error_strings();        
+        ::OpenSSL_add_ssl_algorithms();
 
         mutexes_.resize(::CRYPTO_num_locks());
         for (size_t i = 0; i < mutexes_.size(); ++i)
           mutexes_[i].reset(new boost::asio::detail::mutex);
         ::CRYPTO_set_locking_callback(&do_init::openssl_locking_func);
-
-        ::OpenSSL_add_ssl_algorithms();
       }
     }