27.ostream test fail

[Farid Zaripov]

  The 27.ostream.cpp test issues rw_assert() (function test_flush(),
line 1421).
The test expect that basic_ostream<>::flush() wouldn't call
rdbuf()->pubsync()
when rdstate() == failbit. But standard (27.6.2.6 p7) say nothing about
that.
I have found corresponding lwg issue 397, but status of the issue is
open
(without proposed resolution). What should we do with that rw_assert() ?
 
Farid.