From: Paul Eggert <eggert@cs.ucla.edu>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: emacs-devel@gnu.org
Subject: Re: VIRT_ADDR_VARIES
Date: Wed, 09 Nov 2011 09:44:21 -0800 [thread overview]
Message-ID: <4EBABBF5.5030602@cs.ucla.edu> (raw)
In-Reply-To: <m2pqh2nub9.fsf@igel.home>
On 11/08/11 14:06, Andreas Schwab wrote:
>> Valgrind supplies its own allocator, but I didn't
>> > think it could move initialized data around.
> But the heap.
Sorry, I'm lost. As I understand it, the
executable in a traditional Unix-like system has
storage laid out in this order:
text (programs and read-only data)
data (read-write initialized static data)
bss (read-write zeroed static data)
everything else
Valgrind has some control over the layout in
"everything else", but it can't affect the addresses
in text, data, and bss. my_edata lives in "data",
so how can valgrind affect whether a pointer compares
less than my_edata?
next prev parent reply other threads:[~2011-11-09 17:44 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-06 17:18 VIRT_ADDR_VARIES Andreas Schwab
2011-11-07 1:50 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-07 8:38 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-07 23:23 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-08 8:56 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-08 17:34 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-08 18:38 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-08 21:17 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-08 22:06 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-09 17:44 ` Paul Eggert [this message]
2011-11-09 21:32 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-10 8:17 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 9:29 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-10 16:19 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 11:06 ` VIRT_ADDR_VARIES Eli Zaretskii
2011-11-10 11:20 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-10 16:29 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 16:43 ` VIRT_ADDR_VARIES Eli Zaretskii
2011-11-10 16:50 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 18:06 ` VIRT_ADDR_VARIES Eli Zaretskii
2011-11-14 4:57 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 4:05 ` VIRT_ADDR_VARIES Stephen J. Turnbull
2011-11-10 5:40 ` VIRT_ADDR_VARIES Paul Eggert
2011-11-10 17:05 ` VIRT_ADDR_VARIES Andreas Schwab
2011-11-10 17:15 ` VIRT_ADDR_VARIES Paul Eggert
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