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From: Andreas Schwab <schwab@suse.de>
To: Robert Dewar <dewar@adacore.com>
Cc: Eli Zaretskii <eliz@gnu.org>, 	"Frank Ch. Eigler" <fche@redhat.com>, msnyder@vmware.com, 	brobecker@adacore.com, jreiver@free.fr, gdb@sourceware.org
Subject: Re: how to examine data with compiler optimization option set?
References: <1220390777.48bdaf79617dd@imp.free.fr> 	<48BDB1B0.4040703@adacore.com> <1220391632.48bdb2d04bfd7@imp.free.fr> 	<48BDB4E2.9010301@adacore.com> <20080902215623.GA3779@adacore.com> 	<48BDD4B7.5060503@vmware.com> <y0mljyaudzb.fsf@ton.toronto.redhat.com> 	<umyip6pvb.fsf@gnu.org> <48BF04C6.8030108@adacore.com>
X-Yow: HERE!!  Put THIS on!!  I'm in CHARGE!!
Date: Thu, 04 Sep 2008 08:01:00 -0000
In-Reply-To: <48BF04C6.8030108@adacore.com> (Robert Dewar's message of "Wed, 	03 Sep 2008 17:42:30 -0400")
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Robert Dewar <dewar@adacore.com> writes:

> Well you always had local variables disappearing in earlier versions
> but enough worked so you could debug, in particular parameters were
> always available and reliable.

If parameters are passed in registers they are very likely to get lost.
Even on i386 parameters sometimes get passed in registers, eg. when
calling local functions.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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"And now for something completely different."