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bug#17168: 24.3.50; Segfault at mark_object
From: |
Daniel Colascione |
Subject: |
bug#17168: 24.3.50; Segfault at mark_object |
Date: |
Sun, 06 Apr 2014 14:37:44 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 04/06/2014 02:08 PM, Stefan Monnier wrote:
>> Sure. But why would you ever want to unintern a symbol that pure storage
>> references?
>
> That's a good question. But it cuts both ways: if we don't know why
> it's done, it's hard to judge if it can be disallowed.
> I must say I don't very much like this idea of special-casing the
> obarray and the symbols interned therein.
I really can't think of any good reason why anyone would unintern a core
symbol --- all the uses I can think of would be better served by either
using advice or let-binding `obarray'. I sometimes use mass-uninterning
to get rid of stale function names when I'm developing an elisp package,
but this technique isn't useful for symbols referenced from pure
storage, and a good alternative is just resetting value and symbol
slots. (In fact, I shouldn't use unintern at all for this hack.) Since
it's neither safe nor useful to unintern core symbols, I don't think
it's worry about whether it's okay to forbid it.
Besides: we already special-case the initial obarray for keywordp.
Anyway, I'd like to get a fix into emacs-24 soon so we can make sure
we've fixed the GC bug. Are you vetoing the general approach used in
this patch? If so, I can look at alternatives.
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- bug#17168: 24.3.50; Segfault at mark_object, (continued)
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Daniel Colascione, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Daniel Colascione, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Daniel Colascione, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object,
Daniel Colascione <=
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/07
- bug#17168: 24.3.50; Segfault at mark_object, Daniel Colascione, 2014/04/07
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/07
- bug#17168: 24.3.50; Segfault at mark_object, martin rudalics, 2014/04/08
- bug#17168: 24.3.50; Segfault at mark_object, Daniel Colascione, 2014/04/08
- bug#17168: 24.3.50; Segfault at mark_object, Richard Stallman, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Stefan Monnier, 2014/04/06
- bug#17168: 24.3.50; Segfault at mark_object, Richard Stallman, 2014/04/07
- bug#17168: 24.3.50; Segfault at mark_object, Nicolas Richard, 2014/04/02