Title
Redundant description of explicit constructor use
Status
cd4
Section
11.4.8.2 [class.conv.ctor]
Submitter
Geoffrey Romer

Created on 2014-07-22.00:00:00 last changed 49 months ago

Messages

Date: 2015-05-15.00:00:00

[Moved to DR at the May, 2015 meeting.]

Date: 2015-04-15.00:00:00

Proposed resolution (April, 2015):

Change 11.4.8.2 [class.conv.ctor] paragraph 2 as follows:

[Note: An explicit constructor constructs objects just like non-explicit constructors, but does so only where the direct-initialization syntax (9.4 [dcl.init]) or where casts (7.6.1.9 [expr.static.cast], 7.6.3 [expr.cast]) are explicitly used; see also 12.2.2.5 [over.match.copy]. A default constructor may be an explicit constructor; such a constructor will be used to perform default-initialization or value-initialization (9.4 [dcl.init]). [Example: ... —end example] end note]
Date: 2014-07-22.00:00:00

The conditions under which an explicit constructor will be used are given in 11.4.8.2 [class.conv.ctor] paragraph 2:

An explicit constructor constructs objects just like non-explicit constructors, but does so only where the direct-initialization syntax (9.4 [dcl.init]) or where casts (7.6.1.9 [expr.static.cast], 7.6.3 [expr.cast]) are explicitly used. A default constructor may be an explicit constructor; such a constructor will be used to perform default-initialization or value-initialization (9.4 [dcl.init]).

The existence of this wording in normative text is confusing and should probably simply say that explicit constructors are used in direct initialization, with cross-references to 9.4 [dcl.init] and 12.2.2.5 [over.match.copy], possibly as a note.

History
Date User Action Args
2017-02-06 00:00:00adminsetstatus: drwp -> cd4
2015-11-10 00:00:00adminsetstatus: dr -> drwp
2015-05-25 00:00:00adminsetmessages: + msg6055
2015-05-25 00:00:00adminsetstatus: tentatively ready -> dr
2015-04-13 00:00:00adminsetmessages: + msg5315
2015-04-13 00:00:00adminsetstatus: drafting -> tentatively ready
2014-07-22 00:00:00admincreate