[Bug libstdc++/50348] -fvisibility=hidden doesn't hide stl implementation details.

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50348

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-09-22 
00:29:43 UTC ---
Jason, could you please help me triaging this PR? Should the library do
something else here? Thanks!