I have a large Compact Frameworks V2.0 application that in most cases works very well. On certain devices about once a day, a user receives a Native Error 0xC0000005 that is not caught with the standard managed Try/Catch block.
My application synchronizes with the server via ASMX calls at fixed intervals. The problem appears to occur during synchronization. There is considerable business logic in addition to the ASMX call that happens at the time of the synchronization, but 98% of that is managed code. I’ve reviewed all my P/Invokes and the applications native C++ libraries and at this point I’m about 95% certain that isn’t where the problem is.
Since this only happens on certain devices and very infrequently (less than once a day) it’s very difficult to isolate. I’ve instruemented my code and it appears as if it happens in random places within the application, so I suspect something is corrupting memory.
Any thoughts on how to troubleshoot this further would be appreciated.
My native C++ exception handling was not including async exception, and thus was not catching access violation exceptions.
This may/may not be helpful for my problem, but might be helpful for others.
Using the /EHa switch as documented in this link will allow for catching these types of exceptions:
http://msdn.microsoft.com/en-us/library/1deeycx5.aspx