VC++ 2013 Covariant Return Regression Bug - by ExParrot

Status : 

  Fixed<br /><br />
		This item has been fixed in the current or upcoming version of this product.<br /><br />
		A more detailed explanation for the resolution of this particular item may have been provided in the comments section.

Sign in
to vote
ID 811561 Comments
Status Closed Workarounds
Type Bug Repros 0
Opened 12/13/2013 2:18:42 PM
Access Restriction Public


Covariant returns using std::ios (which is a virtual base class) as a base return type that worked in VC9 through VC11 no longer work. The usage does not fall within the Nonstandard Behavior of 10.3 (Paragraph 5) (
Sign in to post a comment.
Posted by Microsoft on 6/6/2014 at 9:53 AM
Thank you for using Visual Studio and for reporting this bug. We are happy to let you know that this issue has been fixed in Visual Studio 2013 Update 2. If you already have Visual Studio 2013, you can upgrade to Update 2 for free or you can install a trial version from:
Posted by Microsoft on 2/7/2014 at 7:34 AM
Hi: a fix for this issue has been checked into the compiler sources. The fix should show up in a future release of Visual C++.

Jonathan Caves
Visual C++ Compiler Team
Posted by Microsoft on 12/15/2013 at 9:46 PM
Thank you for submitting feedback on Visual Studio and .NET Framework. Your issue has been routed to the appropriate VS development team for investigation. We will contact you if we require any additional information.
Posted by Microsoft on 12/13/2013 at 2:51 PM
Thank you for your feedback, we are currently reviewing the issue you have submitted. If this issue is urgent, please contact support directly(