You can catch all exceptions, but that won't prevent many crashes. } catch (formatexception) { webid = guid.empty; Note that most crashes are not caused by exceptions in c++.
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Try { webid = new guid(querystring[web]); } catch (overflowexception) { webid = guid.empty; How does this help catch multiple exceptions in one line as the question requires?
I think that this only works if you raise and then catch the exception, but not if you try getting the traceback before raising an exception object that.
