[Bug libstdc++/49506] reusing a file stream object will always get eof after openning

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49506

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-06-26 
15:36:45 UTC ---
This was DR 409, which wasn't resolved when GCC 3.3 was released
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3286.html#409