[Bug c++/58590] [C++11] Hidden typename not ill-formed under SFINAE conditions

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58590

--- Comment #1 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Not having investigated this issue at all, I doubt that it should be considered
a SFINAE proper issue, that is I think it should be possible to demonstrate it
in an even smaller testcase, not using the usual SFINAE-exploiting structure (+
very minor nit: the definition of main is totally redundant and certainly will
not be in an eventual testcase)