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From: wescott@micky.columbia.ncr.com (Mike Wescott)
Newsgroups: comp.unix.wizards,comp.bugs.sys5
Subject: stdio broken in SysV?
Message-ID: <2010@sauron.Columbia.NCR.COM>
Date: 23 Feb 90 19:47:05 GMT
Sender: news@sauron.Columbia.NCR.COM
Reply-To: wescott@micky.columbia.ncr.com (Mike Wescott)
Organization: E&M-Columbia, NCR Corp, W Columbia, SC
Lines: 19

I am trying to port a program.  It blows up in fprintf because SysV
stdio has the implicit assumption that a given file descriptor will
be used by no more than one stdio stream.

Which is broken? The program that does:

		fpin = fdopen(fd,"r");
		fpot = fdopen(fd,"w");

Or the stdio that blows up in memcpy() called from doprnt() called by
fprintf() in the same program?

BTW the "implicit assumption" mentioned above is due to the fact that
the array _bufendtab[] is indexed by fp->_file rather than by fp-_iob
or built into the FILE structure itself.

--
	-Mike Wescott
	 mike.wescott@ncrcae.Columbia.NCR.COM