From: Dmitry Antipov <dmantipov@yandex.ru>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: Emacs development discussions <emacs-devel@gnu.org>
Subject: Re: Nasty GC bug
Date: Fri, 24 Aug 2012 14:58:18 +0400 [thread overview]
Message-ID: <50375E4A.2030506@yandex.ru> (raw)
In-Reply-To: <503741B1.90600@cs.ucla.edu>
On 08/24/2012 12:56 PM, Paul Eggert wrote:
> Thanks for finding this bug.
>
> That patch doesn't look quite right if ! USE_LSB_TAG, since
> in that case lisp_align_malloc won't correctly report a
> failure in the section of code that checks whether the
> memory just allocated can be addressed through a Lisp
> object's pointer. Also, what about dont_register_blocks
> and allocated_mem_type?
>
> Instead, how about marking the spare conses with Vdead
> and the spare strings with NULL data? Admittedly I
> haven't had time to think this through....
This implies initialization of the data which we will never
use; what about the special memory type, e.g. MEM_TYPE_SPARE?
Dmitry
next prev parent reply other threads:[~2012-08-24 10:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-24 7:26 Nasty GC bug Dmitry Antipov
2012-08-24 8:56 ` Paul Eggert
2012-08-24 10:58 ` Dmitry Antipov [this message]
2012-08-24 17:25 ` Paul Eggert
2012-08-27 13:25 ` Jim Meyering
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