What can cause an abnormal program termination?

MFC application (uses SQLite3.dll for DB access, along with other DLLs for accessing hardware) terminates abnormally. There is no particular sequence of termination :( My application is a

1. Single threaded Application
2. Uses exception handling
3. Uses more than 6 DLLs to access different hardwares
4. Runs on WinXP SP2

Initially i thought it might be because of Stack Overflow, later i discovered its not. Can someone tell me what are all the ge开发者_运维知识库neral causes for an abnormal program termination? If someone has come across similar problems or has any hints or clues, please pass them on.

Thanks in Advance

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Generally speaking, the general causes of crashes are when you:

• read memory that isn't yours
• write memory that isn't yours
• divide by zero
• do something inside an interrupt that you shouldn't
• free() a pointer more than once

Possibly also:

• have an unhanded exception
• found a bug in your MFC
• one of your >6 hardware-access DLLs is doing any of the above
• You are encountering some kind of hardware fault

Maybe you're passing a bad buffer to one of your hardware DLLs, or are forgetting to lock some memory, or you could even have a version mismatch between the DLLs and their headers.

There are so many choices :P

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Since this is a run-time issue, I suggest you send debug statements to a log file. Include the function name and perhaps a timestamp. Always flush the output buffer after writing to the file, as this provides better probability that the last line was written to the file before the exception occurs.