Section: 21.3.3 [meta.type.synop] Status: C++17 Submitter: Tim Song Opened: 2016-01-07 Last modified: 2017-07-30 20:15:43 UTC
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21.3.3 [meta.type.synop]/1 only prohibits adding specializations of class templates in <type_traits>. Now that we have _v variable templates, this prohibition should apply to them as well.
[2016-02, Issues Telecon]
P0; move to Tentatively Ready.
This wording is relative to N4567.
Edit 21.3.3 [meta.type.synop]/1 as indicated:
-1- The behavior of a program that adds specializations for any of the
classtemplates defined in this subclause is undefined unless otherwise specified.