Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!ucsd!sdcc6!loral!hall
From: hall@loral.UUCP (Steve Hall)
Newsgroups: comp.windows.x
Subject: XrInput() bug in Xray toolbox
Keywords: Xray, HP
Message-ID: <1767@loral.UUCP>
Date: 26 May 88 23:15:32 GMT
Organization: Loral Instrumentation, San Diego
Lines: 15

I came across a bug in HP's Xray toolbox that should be recognized
and fixed for the next release.

The problem occurs when the XrInput routine is blocking for input on
a select and interrupted. After the signal has been serviced, the
condition (erno == EINTR) is checked and the select is restarted.
Unfortunately, the masks (particularly the readMask) has been stepped
on (cleared), so no descriptors will be read-enabled and the select
will never return. The masks should be restored before the select is
restarted. Just a silly-but-potent little bug!

Please pass this along to HP!

	Thanks,
	Steve Hall