Question

我的同事和我刚刚发现vb.net代码中可以使用的参数数量似乎有限制。

对我来说很奇怪的是这个代码会构建但是当我运行它时，会抛出一个InvalidProgramException，说“JIT编译器遇到内部限制”。

以前有人见过这样的事吗？你能指出我为什么会这样吗？

（我在VS 2010中使用.net 4.0。我们在VS 2008中发现了这个结果，结果略有不同。）

示例代码：

    Dim bigVariable As Double = 10.35
    Dim factor As Double = 1.3
    Dim hugeNumberOfArgs As Double = (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) +
(bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor) + (bigVariable * factor)

        Console.WriteLine("Result: " & hugeNumberOfArgs)
        Console.ReadKey()

Answer 1

经过进一步调查后，我不认为这是编译器问题。代码在Debug中崩溃，在Retail中运行良好。我已经对IL进行了几次差异化，并且不会遇到可辨别的差异。

此外，C＃中的错误也会出现。如果您正在尝试重新编写此项，请确保将/ debug +传递给命令行编译器。

这似乎是JIT编译中的一个错误。在调试模式下防止崩溃的一种方法是添加以下代码行

<Assembly: Debuggable(DebuggableAttribute.DebuggingModes.DisableOptimizations)>

添加后，代码将成功执行。这种和两种语言的重新强烈暗示它是JIT过程中的一个错误。

.NET编译器限制添加？

1 个答案: