[Bug c++/51336] [C++11] is_abstract and sfinae

[marc.glisse at normalesup dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51336

--- Comment #5 from Marc Glisse <marc.glisse at normalesup dot org> 2011-11-29 10:27:18 UTC ---
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)? Or maybe there
are legitimate meta-programming tricks I am not thinking of that would turn
regular constructors into pseudo copy constructors to disable them?