[Bug c++/51501] decltype over-agressive SFINAE

[dave at boostpro dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51501

--- Comment #3 from Dave Abrahams <dave at boostpro dot com> 2011-12-11 10:32:25 UTC ---
(In reply to comment #2)
> Could this be related to Bug 45873?

Not if your explanation in http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45873#c2
is correct, I think.  This is a straightforward pack expansion with no change
in the number of arguments.