Path: utzoo!attcan!uunet!decwrl!bacchus.pa.dec.com!decatl!laura.alf.dec.com!hoyt
From: hoyt@laura.alf.dec.com (Kurt Hoyt)
Newsgroups: comp.sys.dec
Subject: Re: Compiler Bug
Message-ID: <1990Jul30.165432.9590@decatl.dec.com>
Date: 30 Jul 90 16:54:32 GMT
References: <327@sun13.scri.fsu.edu> <3152@rwthinf.UUCP> <5889@crltrx.crl.dec.com>
Sender: news@decatl.dec.com (USENET News System)
Reply-To: hoyt@laura.alf.dec.com (Kurt Hoyt)
Distribution: na
Organization: Digital Equipment Corporation
Lines: 35

In article <327@sun13.scri.fsu.edu>, hudgens@sun13.scri.fsu.edu (Jim Hudgens) writes:
> Under Ultrix 4.0, we get this behavior:

[program deleted]

> $ cc bug.c
> $ a.out
> 2000 * 4 / 244.000000 = 32
> $ cc -O3 bug.c
> $ a.out
> Segmentation fault
> 
> It seems to be crashing in the printf.  Nothing obvious in the 
> assembly listing.  Yet under Ultrix 3.1d, we get:

[it works]

I'm running ULTRIX 4.0, and I get:

% cc bug.c
% a.out
2000 * 4 / 244.000000 = 32
% cc -O3 bug.c
% a.out
2000 * 4 / 244.000000 = 32

Which 4.0 (mine says rev 174)? Which cc version? Which CPU type?

% ls -l /usr/bin/cc
lrwxrwxrwx  1 root	13 May 24 17:41 /usr/bin/cc@ -> cc2.0

..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..:..
Kurt in Atlanta             "More than 4 billion chickens in America
hoyt@decatl.alf.dec.com      each year do not have a single happy moment
hoyt@laura.alf.dec.com       in their lives." -- PETA News