Method set_error_number

thread/thread.cpp:225–232

        bool allow_work_stealing() { return is_bit(shift::enable_work_stealing) &&
                                          !(flags & THREAD_PAUSE_WORK_STEALING); }
        int set_error_number() {
            if (likely(error_number)) {
                errno = error_number;
                error_number = 0;
                return -1;
            }
            return 0;
        }

        struct stack_alloc_header {
            uint32_t size;