[Bug libstdc++/58764] [lwg/2193] error: converting to ‘const std::vector >’ from initializer list would use explicit constructor

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58764

--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> ---
IMHO following the precise wording of the standard is a mistake, the P/R is
obviously correct and fixing it for 4.9 is necessary. Just IMHO though :)