How to find the location of a "List index out of bounds" error in Delphi XE2

Question

In Delphi XE2, my program now produces a "List index out of bounds" popup dialog.

I have turned "Notify on language exceptions" on under (Tools\Debugger Options\Language Exceptions) but the exception is not being displayed when debugging.

The following exception types are set to be ignored.

• VCL EAbort Exceptions
• Indy Silent Exceptions
• Microsoft DAO Exceptions
• System.Threading.SynchronizationLockException
• System.Threading.ThreadAbortException

Is there a way to capture the exception without resorting to trial and error with breakpoints?

EDIT I am trying to get the exception dialog to appear while debugging.

Answer 1

The "Additional options" box had the value -LUDesignIDE. It seems that this was preventing Delphi from catching the exception, once removed things returned to normal. I don't know if only this option causes this, or if other options entered would cause the same problem.

Answer 2

I had the same problem with one of my projects, where Delphi wouldn't catch the exception and let me click the break or continue buttons. My problem was that I had some DCUs without debug that were being linked in because Delphi found them first when compiling/linking.

One other reason that I've seen that causes this is when I used some components and/or packages that were built without debug and the exception occurred therein. Once I built the packages & components with debug and then rebuilt my project, Delphi caught the exceptions.