Posted on 1997-10-03
I have some code (>100,000 lines) that occasionally throughs up the following error on a NT 3.51 (SP5) system.
myapp.exe - Application Error
Exception Unknown - software exception (0xC000008) occured in the application at location 0x77FC02CD.
The location is in NTDLL.DLL, and the exception (0xC0000008) indicates that an invalid handle has been referenced.
My problem is that when this popup box appears, there is no option to debug (only option in OK), even though I have setup the system debugber option in AEDebug registry key. Other exceptions on this system do allow you to debug.
So, my questions are :-
1) Why no CANCEL option, so that I can debug (or capture Dr Watson output)?
2) What can cause this error ? If I write a quick program that does a CloseHandle(0xabababab), then under the debugger this causes a First Chance exception that is handled (by NTDLL.DLL ?). So, when I run this normally, no exceptions are thrown.
Because this happens at random, involving thousands of executions of this application, I need some way of gathering a stack-back trace, or at least some indication of the type of scenario that could cause this.