From: Joel Brobecker <brobecker@adacore.com>
To: Tom Tromey <tromey@redhat.com>
Cc: Jan Kratochvil <jan.kratochvil@redhat.com>, gdb-patches@sourceware.org
Subject: Re: [patch] infcall: Remove gdb_assert ($sp overflow)
Date: Sun, 28 Feb 2010 10:53:00 -0000 [thread overview]
Message-ID: <20100228105240.GA2832@adacore.com> (raw)
In-Reply-To: <m3ljefmxah.fsf@fleche.redhat.com>
> Jan> set $sp=0
> Jan> call something()
>
> I don't really have much problem with this patch, I guess, but do people
> really do this sort of thing? Or is this a reduced case of some other
> scenario that actually does happen?
I used to do that (setting $sp) in an ancient testcase whose purpose
was to break the callstack. It turned out that breaking the callstack
was too platform specific, so I gave up on using this.
I am guessing that some people might try setting $sp for various
purposes (maybe debugging a problem with code that misaligns SP
for instance), and a screwup might lead to this situation too...
--
Joel
next prev parent reply other threads:[~2010-02-28 10:53 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-19 22:48 Jan Kratochvil
2010-02-26 22:45 ` Tom Tromey
2010-02-27 1:19 ` [patch] infcall: Remove gdb_assert ($sp underflow) Jan Kratochvil
2010-02-28 10:53 ` Joel Brobecker [this message]
2010-02-26 22:53 ` [patch] infcall: Remove gdb_assert ($sp overflow) Daniel Jacobowitz
2010-02-27 0:46 ` [patch] infcall: Remove gdb_assert ($sp underflow) Jan Kratochvil
2010-02-28 14:35 ` Daniel Jacobowitz
2010-02-28 17:58 ` Jan Kratochvil
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