调试器步入如果（）块，其中条件为假 [英] Debugger stepping into if() block where condition is false

问题描述

由于这种宝石code的：

Given this gem of code:

class Program
{
    private static bool IsAdmin = true;

    static void  Main(string[] args)
    {
        if (!IsAdmin)
        {
            throw new Exception();
        }

        try
        {
            var x = 2342342;
            var y = 123132;
        }
        catch (Exception)
        {
            throw;
        }
    }
}

由于 this.IsAdmin 产生真实的 - 我希望调试器不进if语句。在现实中它 - 它在步扔，但实际上并没有丢

Given the this.IsAdmin yields true - I would expect the debugger to not enter that if statement. In reality it does - and it steps over the throw but does not actually throw!

现在，当你有一个if语句后面一个try / catch块中的异常这只是发生，在Visual Studio的2013年，针对.NET Framework 4中，64位，preFER 32位选中。

Now this only happens when you have an exception inside an if statement followed by a try/catch block, on Visual Studio 2013, targeting .NET Framework 4, 64 bit, "Prefer 32 bit" unchecked.

我已经证实了这一点古怪与不同的机器上的同事。虽然步以下code和调试器会显得步入如果分支，但没有抛出异常：

I have confirmed this oddity with colleagues on different machines. Step though the following code and the debugger will seem to step into the if branch, but no exception is thrown:

我在调试模式下，我曾尝试编译和清洁项目多次。

I am in debug mode, I have tried compiling and cleaning the project multiple times.

任何人能解释为什么会这样？

Can anyone explain why this is happening?

推荐答案

请参阅下面的链接。它是在Visual Studio和.NET框架versiosn的某些版本中的已知错误：

See the link below. It is a known bug in some versions of visual studio and .NET framework versiosn:

<一个href=\"http://whileicompile.word$p$pss.com/2010/07/02/visual-studio-bug-if-followed-by-a-try-catch-causes-debugger-stepping-error/\">http://whileicompile.word$p$pss.com/2010/07/02/visual-studio-bug-if-followed-by-a-try-catch-causes-debugger-stepping-error/

这是完全无害的，是你将不得不住在一起。

It it completely harmless and something you will just have to live with.

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