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Re: transpose-regions
From: |
Chong Yidong |
Subject: |
Re: transpose-regions |
Date: |
Fri, 23 Mar 2007 10:09:48 -0400 |
User-agent: |
Gnus/5.11 (Gnus v5.11) Emacs/22.0.96 (gnu/linux) |
address@hidden (Kim F. Storm) writes:
>>> The problem seems to be that a cons cell that has already been
>>> garbage-collected is being passed to Fcopy_sequence during
>>> copy_properties(), in intervals.c:106. Where did this cons cell come
>>> from?
>>>
>>> target->plist = Fcopy_sequence (source->plist);
>>>
>>> Is the garbage collector somehow failing to account for cons cells
>>> assigned to interval plists?
>>
>> Unlikely, what would be a too obvious bug to remain unnoticed until now
>> (and mark_interval indeed does mark the plist). More likely that the
>> whole interval is not being marked in the first place. The function uses
>> the local variables tmp_interval[12] that are copies of the buffer
>> intervals, perhaps they need to be protected from GC?
>
> There's only a need to GC around a called function if that
> function can actually do GC, i.e. if calling the function may
> eventually call Feval or run byte code. Where is that possible?
>
> Besided, a native windows build uses conservative stack marking,
> so it is not necessary to explicitly protect from GC (on that
> platform). ut was this a native or a cygwin build?
>
> Perhaps the conservative stack marking does not work properly on
> WindowsME (does anything work properly on ME?)
I'm running on GNU/Linux with the latest CVS.
Re: transpose-regions, Chong Yidong, 2007/03/22
- Re: transpose-regions, martin rudalics, 2007/03/23
- Re: transpose-regions, Andreas Schwab, 2007/03/23
- Re: transpose-regions, Kim F. Storm, 2007/03/23
- Re: transpose-regions, martin rudalics, 2007/03/23
- Re: transpose-regions,
Chong Yidong <=
- Re: transpose-regions, Kim F. Storm, 2007/03/23
- Re: transpose-regions, Stefan Monnier, 2007/03/23
- Re: transpose-regions, Chong Yidong, 2007/03/23
- Re: transpose-regions, martin rudalics, 2007/03/23
- Re: transpose-regions, Richard Stallman, 2007/03/23
- Re: transpose-regions, Stefan Monnier, 2007/03/26
- Re: transpose-regions, Richard Stallman, 2007/03/28
Re: transpose-regions, Karl Fogel, 2007/03/24
Re: transpose-regions, Richard Stallman, 2007/03/23
Re: transpose-regions, Stefan Monnier, 2007/03/23