To: pgcc-list AT Desk DOT nl
Subject: pgcc/egcs 1.0.2 & 980502 - possible bug report.
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Date: Fri, 08 May 1998 16:21:32 +0200
From: David Woodhouse <Dave AT imladris DOT demon DOT co DOT uk>
Message-Id: <E0yXoxp-0007pJ-00@dwmw2.robinson.cam.ac.uk>
Sender: Marc Lehmann <pcg AT goof DOT com>
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Summary:

Compiling version 0.31b3 of xmame (http://drake.dit.upm.es/~mame/)
with -O3 will produce a binary which segfaults as soon as it's set up the 
audio. (tested on gauntlet if it matters)

With -O2, it all works.


The problem has been tracked to the "mame.c" file, and there's four versions 
of mame.o available for FTP from ftp://dwmw2.robinson.cam.ac.uk/pub/egcs-bug

mame.o.bad-O3-1.0.2		Compiled with pgcc-1.0.2, -O3
mame.o.bad-O3-980502		Compiled with pgcc-980502, -O3
mame.o.good-O2-1.0.2
mame.o.good-O2-980502		I'm sure you can work it out.

The compiled version of the application is also there:
xmame.linux-ok and xmame.linux-broken

You'll also find the command line used for gcc, and the output of "gcc -v" on 
each compiler.

Anything else I can provide?

----                              ----                              ----
David Woodhouse, Robinson College, CB3 9AN, England.   (+44) 0976 658355
    Dave AT imladris DOT demon DOT co DOT uk        http://www.imladris.demon.co.uk
	    finger pgp AT dwmw2 DOT robinson DOT cam DOT ac DOT uk for PGP key.