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### 1363. `offsetof` should be marked `noexcept`

Section: 17.2 [support.types] Status: C++11 Submitter: BSI Opened: 2010-08-25 Last modified: 2016-01-28

Priority: Not Prioritized

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Discussion:

Addresses GB-68

There is no reason for the offsetof macro to invoke potentially throwing operations, so the result of noexcept(offsetof(type,member-designator)) should be true.

[ Resolved in Rapperswil by a motion to directly apply the words from the ballot comment in N3102. ]

Proposed resolution:

Add to the end of 18.2p4:

> No operation invoked by the offsetof macro shall throw an exception, and `noexcept(offsetof(type,member-designator))` shall be true.