Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!ftp!jbvb
From: jbvb@ftp.COM (James Van Bokkelen)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Microsoft Vs. Borland; benchmarks!
Summary: MSC 5.1 /Ol can bite you, too...
Message-ID: <377@ftp.COM>
Date: 14 Oct 88 15:21:39 GMT
References: <876@galaxy> <8254@haddock.ima.isc.com> <788@euraiv1.UUCP> <644@convex.UUCP>
Organization: FTP Software Inc., Cambridge, MA
Lines: 7

Microsoft C 5.1 will put variables with the ANSI "volatile" characteristic
into registers and spin forever testing them (while the interrupt handler
set the in-memory copy of the flag).  I have been bitten by this in a number
of cases.  So far, I haven't been bitten by /Oa, but I won't rule it out
as a possibility...

jbvb