Qt can generate nested exceptions. For example ~QObject has some parts in try/catch blocks because these can generate exceptions. If exceptions are thrown, with the intention of being caught, within ~QObject while the QObject is being destroyed due to another exception, this is a nested exception situation.

Unfortunately Symbian hardware platform runtime support does not yet support nested exceptions. If a nested exception occurs and the exception objects cannot be allocated, the runtime crashes. For example, when running tst_exceptionsafety_objects, all allocations after a point are failed - this crashes.

This problem really has to be fixed in the Symbian runtime. So this defect is primarily being raised to track a Symbian fix. Details will be added when available.