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POFree-running application under test exits shortly after I attach with VS2010 SP1 in x86
 

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  1. POFree-running application under test exits shortly after I attach with VS2010 SP1 in x86
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    <p>On Windows 7 x64, when I attach in x86 mode to a fairly complex free-running app, it runs for a while, then reproducibly exits.</p> <pre><code>MyApp.exe Managed (v4.0.30319)' has exited with code -1073740791 (0xc0000409). </code></pre> <p>followed immediately by</p> <pre><code>MyApp.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0). </code></pre> <p>Sometimes if it runs OK, it would hit my breakpoint, I'll inspect the state, but when I hit F5 to keep going, the app exits in the same fashion.</p> <p>Quick search for the error code tells me that it's a Stack Buffer Overrun. I hear that it might be caused by incorrect unmanaged interop code.</p> <p>I can run from debugger OK (F5), but free-running and attaching always has this problem.</p> <p>Any thoughts on how I could narrow it down?</p> <p>EDIT: Here's a callstack i am seeing on a different machine (Windows Server 2008 R2 x64) here, might be related:</p> <blockquote> <p>clr.dll!__crt_debugger_hook()<br> clr.dll!___report_gsfailure() + 0xeb bytes clr.dll!_DoJITFailFast@0() + 0x8 bytes clr.dll!CrawlFrame::SetCurGSCookie() + 0x2e9c4f bytes<br> clr.dll!StackFrameIterator::Init() + 0x60 bytes<br> clr.dll!Thread::StackWalkFramesEx() + 0x8a bytes<br> clr.dll!Thread::StackWalkFrames() + 0x87 bytes clr.dll!CNameSpace::GcScanRoots() + 0xd7 bytes clr.dll!WKS::gc_heap::mark_phase() + 0xae bytes<br> clr.dll!WKS::gc_heap::gc1() + 0x7b bytes<br> clr.dll!WKS::gc_heap::garbage_collect() + 0x1c1 bytes<br> clr.dll!WKS::GCHeap::GarbageCollectGeneration() + 0xba bytes<br> clr.dll!WKS::gc_heap::try_allocate_more_space() + 0x1cd0 bytes clr.dll!WKS::gc_heap::allocate_more_space() + 0x13 bytes<br> clr.dll!WKS::GCHeap::Alloc() + 0x507 bytes clr.dll!Alloc() + 0x5a bytes<br> clr.dll!SlowAllocateString() + 0x41 bytes<br> clr.dll!UnframedAllocateString() + 0x11 bytes<br> clr.dll!StringObject::NewString() + 0x26 bytes clr.dll!Int64ToDecStr() + 0x12e bytes<br> clr.dll!COMNumber::FormatInt64() + 0x17e bytes mscorlib.ni.dll!6c60b8e1()<br> [Frames below may be incorrect and/or missing, no symbols loaded for mscorlib.ni.dll] </p> </blockquote> <p><strong>EDIT2</strong> Things seem fine on x64 build of the app, issue only appears in x86.</p>
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    1. COYou might find more information in your OS Event Viewer?
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      1. USJason Williams
    2. CO@Jason Williams: nothing in the event viewer. Good try
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    3. COAny access over UNC paths or to protected locations in the code? does running as a privileged user negate the problem?
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      1. USMike Miller
 

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