Proposed resolution (November, 2017)

Change 9.2.9.7 [dcl.spec.auto] paragraph 11 as follows:

Redeclarations or specializations of a function or function template with a declared return type that uses a placeholder type shall also use that placeholder, not a deduced type. Similarly, redeclarations or specializations of a function or function template with a declared return type that does not use a placeholder type shall not use a placeholder. [Example:

[Accepted as a DR at the March, 2018 (Jacksonville) meeting.]

9.2.9.7 [dcl.spec.auto] paragraph 13 says,

Redeclarations or specializations of a function or function template with a declared return type that uses a placeholder type shall also use that placeholder, not a deduced type.

The inverse should also be true (a specialization cannot use a placeholder type if the template used a non-placeholder), but this is not said explicitly.

History Date User Action Args 2020-12-15 00:00:00adminsetstatus: dr -> cd5 2018-04-11 00:00:00adminsetstatus: tentatively ready -> dr 2018-02-27 00:00:00adminsetmessages: + msg5858 2018-02-27 00:00:00adminsetstatus: drafting -> tentatively ready 2015-02-05 00:00:00admincreate