[Bug c++/48934] no rejection reason given for SFINAE

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48934

--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-05-09 19:16:39 UTC ---
(In reply to comment #12)
> 
> This PR is really just to get *anything* printed, so just a basic "substition
> failed" with no mention of which template parameter failed would be enough to
> resolve this IMHO.

To clarify: I would like to get the usual list of template args e.g. "[with T =
foo, U = bar]" but I don't mind if it doesn't say for which one substitution
failed.