From: Daniel Jacobowitz <drow@false.org>
To: Andreas Schwab <schwab@suse.de>
Cc: gdb-patches@sources.redhat.com
Subject: Re: Broken cast in linux-thread-db
Date: Wed, 12 Oct 2005 14:24:00 -0000 [thread overview]
Message-ID: <20051012142427.GA21308@nevyn.them.org> (raw)
In-Reply-To: <jebr1uu8lk.fsf@sykes.suse.de>
On Wed, Oct 12, 2005 at 04:13:11PM +0200, Andreas Schwab wrote:
> Casting a pointer to CORE_ADDR results in implementation defined behaviour
> when the latter is wider than a pointer. The implementation's behaviour
> might be to sign extend which is not what we want here. Tested on
> i386-suse-linux with --enable-64-bit-bfd.
This will silence the warning, but AFAICS not fix anything. Now you're
casting it to something explicitly unsigned, but the same size as a
pointer; but GDB tries to use the target's sign extension conventions,
and a CORE_ADDR ought to be properly sign extended on MIPS.
I think the current behavior is actually more correct despite any
warning. Were you fixing an observed problem?
--
Daniel Jacobowitz
CodeSourcery, LLC
next prev parent reply other threads:[~2005-10-12 14:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-12 14:13 Andreas Schwab
2005-10-12 14:24 ` Daniel Jacobowitz [this message]
2005-10-12 14:33 ` Andreas Schwab
2005-10-12 14:41 ` Daniel Jacobowitz
2005-10-12 15:59 ` Andreas Schwab
2005-10-12 17:43 ` Daniel Jacobowitz
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