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bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel
From: |
Nix |
Subject: |
bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel |
Date: |
Mon, 30 Jan 2012 21:39:36 +0000 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
On 30 Jan 2012, Eli Zaretskii stated:
>> From: Nix <nix@esperi.org.uk>
>> >> (gdb) print it->string
>> >> $6 = 12065314
>> >
>> > What does "xtype" say about this string? If it says Lisp_String, what
>> > does "xstring" say?
>>
>> (gdb) xtype
>> Lisp_Symbol
>> (gdb) xstring
>> $2 = (struct Lisp_String *) 0xb81a20
>> There is no member named data.
>>
>> Not very useful.
>
> It's a symbol (see above), not a string, so using "xstring" with it is
> not useful. Try "xsymbol" (I'm guessing it's nil).
Oh, how... obvious. I shouldn't respond to these when exhausted.
Ooo:
(gdb) xsymbol it->string
$2 = (struct Lisp_Symbol *) 0xb81a20
There is no member named data.
(gdb) print *((struct Lisp_Symbol *) 0xb81a20)
$3 = {
gcmarkbit = 0,
redirect = SYMBOL_PLAINVAL,
constant = 1,
interned = 2,
declared_special = 0,
xname = 8697697,
val = {
value = 12065314,
alias = 0xb81a22,
blv = 0xb81a22,
fwd = 0xb81a22
},
function = 12065266,
plist = 38661286,
next = 0x0
}
(gdb) print/x Qnil
$6 = 0xb81a22
So this is clearly actually a forwarded or buffer-localized nil
variable, but redirect has become corrupted so that Emacs thinks,
incorrectly, that it's a value. Right?
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Nix, 2012/01/26
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Eli Zaretskii, 2012/01/27
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Nix, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Eli Zaretskii, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Nix, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Andreas Schwab, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Eli Zaretskii, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel,
Nix <=
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Eli Zaretskii, 2012/01/30
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Nix, 2012/01/31
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Eli Zaretskii, 2012/01/31
- bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel, Nix, 2012/01/31