This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110b. See for the official list.


2422. Incorrect grammar for deduction-guide

Section:  []     Status: C++20     Submitter: Barry Revzin     Date: 2019-07-28

[Adopted as a DR at the November, 2019 meeting.]

According to [] paragraph 1, the syntax of a deduction-guide is:

Instead of explicit, this production should use the explicit-specifier nonterminal. (The wording of [over.match.class.deduct] has references to the explicit-specifier of a deduction guide, for example.)

Proposed resolution (September, 2019):

Change the grammar in [] paragraph 1 as follows: