[Bug libstdc++/56193] ios_base should replace operator void* with explicit operator bool in C++11 onwards.

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56193

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-02-11 11:48:54 UTC ---
Indeed, thanks Jon.