Title
Template parameter packs in class template partial specializations
Status
c++11
Section
13.2 [temp.param]
Submitter
Doug Gregor

Created on 2008-04-09.00:00:00 last changed 96 months ago

Messages

Date: 2010-08-23.00:00:00

[Voted into WP at August, 2010 meeting.]

Date: 2010-02-15.00:00:00

Proposed resolution (February, 2010):

Change 13.2 [temp.param] paragraph 11 as follows:

If a template-parameter of a class template has a default template-argument, each subsequent template-parameter shall either have a default template-argument supplied or be a template parameter pack. If a template-parameter of a primary class template is a template parameter pack, it shall be the last template-parameter. [Note: These are not requirements for function templates or class template partial specializations because template arguments might can be deduced (13.10.3 [temp.deduct]). [Example:...
Date: 2008-04-09.00:00:00

13.2 [temp.param] paragraph 11 currently says,

If a template-parameter of a class template is a template parameter pack, it shall be the last template-parameter. [Note: These are not requirements for function templates because template arguments might be deduced (13.10.3 [temp.deduct])...

This restriction was only meant to apply to primary class templates, not partial specializations.

Suggested resolution:

If a template-parameter of a primary class template is a template parameter pack, it shall be the last template-parameter. [Note: These are not requirements for function templates or class template partial specializations because template arguments might be deduced (13.10.3 [temp.deduct])...
History
Date User Action Args
2014-03-03 00:00:00adminsetstatus: fdis -> c++11
2011-04-10 00:00:00adminsetstatus: wp -> fdis
2010-11-29 00:00:00adminsetstatus: dr -> wp
2010-08-23 00:00:00adminsetmessages: + msg2920
2010-08-23 00:00:00adminsetstatus: ready -> dr
2010-03-29 00:00:00adminsetstatus: review -> ready
2010-02-16 00:00:00adminsetmessages: + msg2552
2010-02-16 00:00:00adminsetstatus: drafting -> review
2008-06-29 00:00:00adminsetstatus: open -> drafting
2008-04-09 00:00:00admincreate