Xref:	news2.mv.net comp.os.msdos.djgpp:1072
From:	"William D. Kirby" <wdkirby AT popd DOT ix DOT netcom DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: v2: optimization & floating point
Date:	13 Feb 1996 10:55:10 GMT
Organization:	Netcom
Lines:	36
Message-ID:	<4fpqme$mse@ixnews6.ix.netcom.com>
References:	<4fo7dm$1fa AT news1 DOT usa DOT pipeline DOT com>
NNTP-Posting-Host:	ix-dc6-24.ix.netcom.com
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

knightofni AT usa DOT pipeline DOT com (The Knight Who Says Ni!) wrote:
>If I compile with -O, the program will crash and say:
>Exiting due to signal SIGFPE
>Floating Point exception at eip=00001729
>
>Is this a problem with v2.0, or do I need to use another command-line
>option to use floating point with -O?
>
>
> _______________________________
>/ \  The Knight Who Says "Ni!"  \
>\_|                             |
>  |   I'm not nearly as think   |
>  |    as you confused I am.    |
>  |  ___________________________|_
>  \_/____________________________/
>

I have been experiencing the same problems with DJGPP V2.0, and have had 
to always use no optimization.  I have been trying to isolate the 
optimization option that causes the problem, but no luck so far. I have 
even run thru the DJGPP test programs for libc with optomization, and 
didn't get any errors. The problems of floating point exceptions and 
slower running code occured with the change from GCC v2.63 to v2.7.1 & 
2.7.2. I think the problem is the original GCC source.




-- 
William D. Kirby              Voice: (703) 273-0005
Consultant                   Email: wdkirby AT ix DOT netcom DOT com (primary)
3527 Cornell Road             or 70711 DOT 2407 AT compuserve DOT com (secondary)
Fairfax, VA 22030-1813

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