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Section: 17.9.7 [propagation] Status: NAD Submitter: Alisdair Meredith Opened: 2007-10-10 Last modified: 2016-02-10
Priority: Not Prioritized
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It could be I did not understand the design rationale, but I thought copy_exception would produce an exception_ptr to the most-derived (dynamic) type of the passed exception. Instead it slices, which appears to be less useful, and a likely source of FAQ questions in the future.
(Peter Dimov suggests NAD)
[ Bellevue: ]
How could this be implemented in a way that the dynamic type is cloned?
The feature is designed to create an exception_ptr from an object whose static type is identical to the dynamic type and thus there is no slicing involved.