Stdio buffering question

[Doug Gwyn]

In article <16124 at brl-adm.ARPA> ultra!wayne at ames.arc.nasa.gov (Wayne Hathaway) writes:
>I mean, if it doesn't buffer when writing to the terminal, why does
>it buffer when writing to a pipe?

People keep dorking around with stdio buffering in an attempt to be
"helpful".  As usual, it just messes things up in some cases.

stderr is supposed to start out unbuffered, ALWAYS.  It doesn't,
though, on SunOS.  A way to fix this is to setbuf(stderr,(char*)0);
at the beginning of your program.