[Bug libstdc++/50951] state of subtract_with_carry_engine not saved correctly to output stream

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50951

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-11-01 
23:09:45 UTC ---
Same issue for mersenne_twister...