lib64stdc++6 4.9.2-10ubuntu5 (i386 binary) in ubuntu vivid

 This package contains an additional runtime library for C++ programs
 built with the GNU compiler.
 .
 libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which
 was included up to g++-2.95. The first version of libstdc++-v3 appeared
 in g++-3.0.

Details

Package version:
4.9.2-10ubuntu5
Source:
gcc-4.9 4.9.2-10ubuntu5 source package in Ubuntu
Status:
Superseded
Component:
main
Priority:
Optional