This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 114a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-04-18
[Accepted at the November, 2020 meeting as part of paper P1787R6 and moved to DR at the February, 2021 meeting.]
The current wording of the Standard does not permit repeated alias template declarations within a scope, but some current implementations allow it, presumably by analogy with typedef declarations. Should the Standard be changed to permit this usage?
Notes from the November, 2014 meeting:
CWG agreed that the usage should be permitted, provided that the dependent types are equivalent. Note that this is a weaker requirement than the token-for-token identity of the ODR, since alias templates are not definitions per Clause 13 [temp] paragraph 1.