include/std/std_ostream.h

98       class sentry;
99       friend class sentry;
147        *  constructing a temporary object of type std::basic_ostream::sentry.
149        *  status flag; see the sentry documentation for more.
151        *  If the sentry status is good, the function tries to generate
237        *  in that it also constructs a sentry object and has the same error
263        *  std::basic_ostream::sentry.  This has several effects, concluding
264        *  with the setting of a status flag; see the sentry documentation
267        *  If the sentry status is good, the function tries to generate
289       // Core write functionality, without sentry.
384     class basic_ostream<_CharT, _Traits>::sentry
399        *  If the stream state is still good, then the sentry state becomes
403       sentry(basic_ostream<_CharT, _Traits>& __os);
409        *  @c std::uncaught_exception() is true, the sentry destructor calls
412       ~sentry()
425        *  @return  The sentry state.
428        *  return value is that of the sentry state (true == okay).
443    *  std::basic_ostream.  After constructing a sentry object with good
488    *  std::basic_ostream.  After constructing a sentry object with good