From: Nix <nix@esperi.org.uk>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 10617@debbugs.gnu.org
Subject: bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel
Date: Mon, 30 Jan 2012 19:11:55 +0000 [thread overview]
Message-ID: <87wr893szo.fsf@spindle.srvr.nix> (raw)
In-Reply-To: <83r4yhqagl.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 30 Jan 2012 21:03:38 +0200")
On 30 Jan 2012, Eli Zaretskii spake thusly:
> From: Nix <nix@esperi.org.uk>
>> > It would be interesting to see it->current, it->position, it->sp, and
>> > it->string in frames #6 and #8.
>>
>> Frame 6:
>>
>> (gdb) print it->current
>> $3 = {
>> pos = {
>> charpos = 1430,
>> bytepos = 1394
>> },
>> overlay_string_index = -1,
>> string_pos = {
>> charpos = -1,
>> bytepos = -1
>> },
>> dpvec_index = -1
>> }
>> (gdb) print it->position
>> $4 = {
>> charpos = 1430,
>> bytepos = 1394
>> }
>
> If bytepos is smaller than charpos, it generally means trouble...
I thought maybe the gap accounted for it -- but this is already
gap-compensated, isn't it? So we have characters of size <1 byte there.
(I sort of doubt that.)
>> (gdb) print it->sp
>> $5 = 0
>> (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.
(gdb) print *((struct Lisp_String *) 0xb81a20)
$9 = {
intervals = 0x98,
u = {
imm = {
gcmarkbit = 1,
immbit = 0,
size = -40,
size_byte = -37,
data = "\204\000\000\000\000\000\"\032\270\000\000\000\000\000\362\031\270\000\000\000\000"
},
dat = {
unused = 1,
size = <error reading variable>
}
}
Even less useful.
I'll see if I can reproduce this in an unoptimized build...
--
NULL && (void)
next prev parent reply other threads:[~2012-01-30 19:11 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-26 22:40 bug#10617: 24.0.92; Bidi crash reading a message from emacs-devel Nix
2012-01-27 9:03 ` Eli Zaretskii
2012-01-30 18:14 ` Nix
2012-01-30 19:03 ` Eli Zaretskii
2012-01-30 19:11 ` Nix [this message]
2012-01-30 19:26 ` Andreas Schwab
2012-01-30 21:09 ` Eli Zaretskii
2012-01-30 21:39 ` Nix
2012-01-31 3:46 ` Eli Zaretskii
2012-01-31 14:21 ` Nix
2012-01-31 16:26 ` Eli Zaretskii
2012-01-31 18:06 ` Nix
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