[Boost-users] iostreams::stream: flush doesn't work but endl does

Hi all, I've created my own iostreams device (for a serial port) which for debugging purposes prints out calls to read()/write(). I'm constructing a stream on the device like this: serial_device serial("/dev/ttyS3", serial_device::Baud38400); stream<serial_device> s(serial); If I do this: s << "hello world" << endl; serial.write() is called and does its debug output, but with this: s << "hello world\r" << flush; I get nothing despite using 'flush'. I've also tried calling s.flush() manually but get the same lack of effect. How come flush isn't working as it should here? TIA, --rob -- Rob Desbois