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2877. Strengthen meaning of "emptyshared_ptr<T>" indynamic_pointer_cast

Section: 20.3.2.2.10[util.smartptr.shared.cast]Status:ResolvedSubmitter: United StatesOpened: 2017-02-03Last modified: 2020-09-06

Priority:Not Prioritized

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Discussion:

Addresses US 137

Paragraph (6.2): It is intuitive, but not specified, that the empty pointer returned by adynamic_pointer_cast should point to null.

Proposed change:

Rephrase as:

Otherwise,shared_ptr<T>().

Proposed resolution:

Resolved byP0414R2, which was adopted in Issaquah.