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From: "marc.glisse at normalesup dot org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/51336] [C++11] is_abstract and sfinae
Date: Tue, 29 Nov 2011 10:51:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51336

Marc Glisse <marc.glisse at normalesup dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #6 from Marc Glisse <marc.glisse at normalesup dot org> 2011-11-29 10:34:08 UTC ---
(In reply to comment #5)
> All right, now the is_abstract behavior is settled, do you think the fixed code
> provided by Daniel in comment #1 should produce a warning, since the
> declaration is absolutely useless (I may be missing something)?

Ah, I did find a case where it was used:
I added a A(A&) constructor to prevent the default A(A const&) from being
generated, and then the template version was used when copying from const (only
if T is int).

Closing the bug as invalid, thanks for your answers.