Section: 16 [library], 33 [thread], D [depr] Status: NAD Submitter: LWG Opened: 2009-06-28 Last modified: 2016-01-28 10:19:27 UTC
Priority: Not Prioritized
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Discussion:
Addresses DE 2
Description
Marking a constructor with explicit has semantics even for a constructor with zero or several parameters: Such a constructor cannot be used with list-initialization in a copy-initialization context, see 12.2.2.8 [over.match.list]. The standard library apparently has not been reviewed for marking non-single-parameter constructors as explicit.
Suggestion
Consider marking zero-parameter and multi-parameter constructors explicit in classes that have at least one constructor marked explicit and that do not have an initializer-list constructor.
Notes
Robert Klarer to address this one.
[ 2009 Santa Cruz: ]
Move to "Open". Robert Klarer has promised to provide wording.
[ 2010 Pittsburgh: Moved to NAD, rationale added below. ]
Rationale:
We are unaware of any cases where initializer lists cause problem in this context, but if problems arise in the future the issue can be reopened.
Proposed resolution: