定时器中成员函数GetNextTick中res的类型不应该是size_t吧？

[Arthur940621]

int HeapTimer::GetNextTick() {
    tick();
    size_t res = -1;
    if(!heap_.empty()) {
        res = std::chrono::duration_cast<MS>(heap_.front().expires - Clock::now()).count();
        if(res < 0) { res = 0; }
    }
    return res;
}

无符号整形值赋值-1会溢出吧？ 如果std::chrono::durationcast(heap.front().expires - Clock::now()).count()也为负数，也会溢出

[translee]

是的