Visual Studio和MSSE杀毒编译时错误

问题描述

我的VS2013终极副本编译该$ C $下60+秒：

My copy of VS2013 Ultimate compiles this code for 60+ seconds:

class Program
{
    static void Main(string[] args)
    {
        double dichotomy = Dichotomy(
            d =>
            {
                try
                {
                    int size = (int) d;
                    byte[] b = new byte[size];
                    return -b.Length;
                }
                catch (Exception)
                {
                    return 0;
                }
            },
            0,
            int.MaxValue,
            1);

        Console.WriteLine(dichotomy);
        Console.ReadKey();
    }

    private static double Dichotomy(
        Func<double, double> func,
        double a,
        double b,
        double epsilon)
    {
        double delta = epsilon / 10;
        while (b - a >= epsilon)
        {
            double middle = (a + b) / 2;
            double lambda = middle - delta, mu = middle + delta;
            if (func(lambda) < func(mu))
                b = mu;
            else
                a = lambda;
        }
        return (a + b) / 2;
    }
}

但是，如果我把双与 INT ，它会立即编译。怎样才能解释它...？

But if I replace double with int, it compiles immediately. How can be it explained...?

推荐答案

我瑞普，27秒我的机器上。恶人是MsMpEng.exe，它燃烧100％的核心为长。

I repro, 27 seconds on my machine. The evil-doer is MsMpEng.exe, it burns 100% core for that long.

这是Windows Defender服务，一个实际执行恶意软件扫描。受一是不要选中了实时保护打开禁用它选项便可立即修复的延迟。因此，不增加我的项目存储到排除的文件位置框中，可能是你的preferred方式的路径。

This is the Windows Defender service, the one that actually performs the malware scans. Disabling it by unticking the "Turn on real-time protection" option instantly fixes the delay. So does adding the path where I store projects to the "Excluded file locations" box, probably your preferred approach.

我讨厌不得不猜测的根本原因，但假设你的源$ C ​​$ C是触发恶意软件的规则。不是一个很好的解释，我没有看到的延迟，当我指定一个.NET版本＆LT; 4.0。好吧，我放弃了：）

I'd hate to have to guess at the underlying reason, but have to assume that your source code is triggering a malware rule. Not a great explanation, I don't see the delay when I target a .NET version < 4.0. Okay, I give up :)

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