Delphi2007：在调试器中继续暂停应用程序时崩溃

Question

在 D2007 调试器中启动应用程序、暂停应用程序并继续（按 F9）时，我们经常会遇到崩溃。例如

• 创建一个 VCL 应用程序
• 在主窗体上放置一个 TButton 和一个 TEdit

• 为 Button1 添加这个 OnClick 处理程序：

  procedure TForm1.Button1Click(Sender: TObject);
  var
    i: Integer;
  begin
    while True do
    begin
      for i := 0 to 9999 do
        Edit1.Text := IntToStr(Random(i));
      Application.ProcessMessages;
    end;
  end;
  

• 保存并调试应用程序
• 按下按钮1
• 关注 IDE
• 点击“暂停”按钮
• 按 F9。

我们几乎总是遇到访问冲突。我在Windows 7/64bit下测试过这个，我的同事在XP/32bit下。在我同事的 D2006 中，我们无法重现此错误。

你能重现这个吗？任何想法如何解决它？

Answer 1

我们在 D2010（和之前的 D2007）中也时不时地有这个，但我无法重现这个。 （我们也使用Win7 64bit） 我会尝试用你的测试应用程序重现这个，谢谢！现在希望能以某种方式解决这个问题...

编辑：无法在 D2010 中重现此问题...将尝试 D2007

Edit2：但我可以在 D2007 中重现这个！
我还在事件日志中收到一些奇怪的错误：

Debug Output:    *** A stack buffer overrun occurred in   "C:\test\Project7.exe" :   Process Project7.exe (2584)
Debug Output: This is usually the result of a memory copy to a local buffer or structure where the size is not properly calculated/checked.  Process Project7.exe (2584)
Debug Output: If this bug ends up in the shipping product, it could be a severe security hole.  Process Project7.exe (2584)
Debug Output: The stack trace should show the guilty function (the function directly above __report_gsfailure).  Process Project7.exe (2584)
Debug Output:  *** enter .exr 772B43D0 for the exception record  Process Project7.exe (2584)
Debug Output:  *** then kb to get the faulting stack   Process Project7.exe (2584)

当我使用堆栈查看器 (http://code.google.com/p/asmprofiler/wiki/ProcessStackViewer) 和当前 Delphi 线程的原始堆栈跟踪（导致错误？）时，我看到以下堆栈：

[772791B3]{ntdll.dll   } RtlUnhandledExceptionFilter + $12
[7725CDF4]{ntdll.dll   } Unknown function at CsrVerifyRegion + $1B0
[771D28A6]{ntdll.dll   } memcpy + $5E6
[7725CDE4]{ntdll.dll   } Unknown function at CsrVerifyRegion + $1A0
[7725CDF4]{ntdll.dll   } Unknown function at CsrVerifyRegion + $1B0
[77243509]{ntdll.dll   } Unknown function at RtlUlonglongByteSwap + $16299
[771F6AC9]{ntdll.dll   } Unknown function at RtlDosSearchPath_Ustr + $ADA
[771F6ADD]{ntdll.dll   } Unknown function at RtlDosSearchPath_Ustr + $AEE
[771F6A9B]{ntdll.dll   } Unknown function at RtlDosSearchPath_Ustr + $AAC
[77220AE5]{ntdll.dll   } Unknown function at WinSqmSetIfMaxDWORD + $35
[771F6A3D]{ntdll.dll   } Unknown function at RtlDosSearchPath_Ustr + $A4E
[77220AE5]{ntdll.dll   } Unknown function at WinSqmSetIfMaxDWORD + $35
[6E931AE0]{AcLayers.DLL} Unknown function at NotifyShims + $73B6
[771C010F]{ntdll.dll   } KiUserExceptionDispatcher + $F
[6E931AE0]{AcLayers.DLL} Unknown function at NotifyShims + $73B6
[771E9960]{ntdll.dll   } Unknown function at RtlQueryEnvironmentVariable + $241
[6E8E0000]{AcLayers.DLL}  + $0
[771EA172]{ntdll.dll   } Unknown function at RtlAllocateActivationContextStack + $1CF
[6E8E1FFF]{AcLayers.DLL}  + $0
[6E8E0000]{AcLayers.DLL}  + $0
[768F4AF9]{ole32.dll   } Unknown function at ObjectStublessClient31 + $4AF6
[772B206C]{ntdll.dll   } NlsAnsiCodePage + $205C
[771EA14C]{ntdll.dll   } Unknown function at RtlAllocateActivationContextStack + $1A9
[6E8E1FFF]{AcLayers.DLL}  + $0
[77220AE5]{ntdll.dll   } Unknown function at WinSqmSetIfMaxDWORD + $35
[771E9E5C]{ntdll.dll   } Unknown function at RtlDecodePointer + $F7
[768F4B4D]{ole32.dll   } Unknown function at ObjectStublessClient31 + $4B4A
[77220AE5]{ntdll.dll   } Unknown function at WinSqmSetIfMaxDWORD + $35
[771E9E89]{ntdll.dll   } LdrInitializeThunk + $10
[771B0000]{ntdll.dll   }  + $0
[771B0000]{ntdll.dll   }  + $0
[7720EAB0]{ntdll.dll   } RtlExitUserThread + $0
[771C0190]{ntdll.dll   } RtlUserThreadStart + $0

我搜索了“AcLayers.DLL”（因为它对我来说有点奇怪）我找到了一篇关于 Vista 兼容模式和奇怪崩溃的文章 (http://www.nynaeve.net/?p=62)。 ..大概D2007不兼容Win7？

编辑 3：当我在没有兼容模式的情况下运行 D2007 时（？，只是运行 exe，不使用任务栏中的固定项目！）我得到同样的错误的频率降低了，堆栈不再显示 AcLayers.DLL，但我看不出当时出了什么问题（需要更多调查，现在没有更多时间）