10:39 p.m.
Hi Adam,
I’ve put the CC to xemacs-beta＠ back in place.
Ar an séú lá is fiche de mí Meitheamh, scríobh Adam Sjøgren:
On Thu, 26 Jun 2008 14:20:07 +0200, Aidan wrote:
> Your crash and that commit should be independent; the problem fixed
> triggered an assertion failure on debug builds (normally the beta
> ones), and your build isn’t a debug build, I guess. (The
> report-xemacs-bug mail seems to have been lost to the aether :-/ ) .
I reported the bug with the stock Ubuntu 8.04 XEmacs packages at
first. From the feedback I got, I built libpng and XEmacs with debug
nostrip noopt and reproduced the crash and reported that.
> If you have compiled XEmacs yourself--which is necessary to avoid the
> other bug you reported--use the debug flags, and provoke the problem
> with GDB. The exact line number of where things are going wrong would
> be real help.
Is this following good, or do I need to do something more?
$ file /usr/bin/xemacs /etc/alternatives/xemacs /usr/bin/xemacs21
/etc/alternatives/xemacs21 /usr/bin/xemacs21-mule /usr/bin/xemacs-21.4.21-mule
/usr/bin/xemacs: symbolic link to `/etc/alternatives/xemacs'
/etc/alternatives/xemacs: symbolic link to `/usr/bin/xemacs21'
/usr/bin/xemacs21: symbolic link to `/etc/alternatives/xemacs21'
/etc/alternatives/xemacs21: symbolic link to `/usr/bin/xemacs21-mule'
/usr/bin/xemacs21-mule: symbolic link to `xemacs-21.4.21-mule'
/usr/bin/xemacs-21.4.21-mule: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for
GNU/Linux 2.6.8, dynamically linked (uses shared libs), not stripped
$ ldd /usr/bin/xemacs | grep libpng
libpng12.so.0 => /usr/lib/libpng12.so.0 (0x00002b7d5cf4f000)
$ file /usr/lib/libpng12.so.0 /usr/lib/libpng12.so.0.27.0
/usr/lib/libpng12.so.0: symbolic link to `libpng12.so.0.27.0'
/usr/lib/libpng12.so.0.27.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), not
stripped
$ ulimit -c unlimited
$ xemacs --vanilla /usr/lib/xemacs-21.4.21/etc/custom/reset-up.png
[...]
Program terminated with signal 11, Segmentation fault.
[New process 23617]
#0 0x00002b14d59fd527 in kill () from /lib/libc.so.6
(gdb) where
#0 0x00002b14d59fd527 in kill () from /lib/libc.so.6
#1 0x000000000048db5e in fatal_error_signal (sig=11) at emacs.c:642
#2 <signal handler called>
#3 0x00002b14d5a42bcb in free () from /lib/libc.so.6
#4 0x00002b14d448d1c2 in ?? () from /usr/lib/libX11.so.6
#5 0x00000000005d434c in x_init_image_instance_from_eimage (ii=0xddd980, width=63,
height=19, slices=1,
eimage=0xdc8a60
"%G���������������������������������������������������������������������������������������������%＠}}{%G������%＠...,
dest_mask=-1, instantiator=13665648, domain=13542112) at glyphs-x.c:988
#6 0x0000000000531f5a in png_instantiate (image_instance=<value optimized out>,
instantiator=13665648, pointer_fg=<value optimized out>,
pointer_bg=<value optimized out>, dest_mask=-1, domain=13542112) at
glyphs-eimage.c:1045
#7 0x0000000000527983 in instantiate_image_instantiator (governing_domain=10795328,
domain=13542112, instantiator=13665648, pointer_fg=47368518132976,
pointer_bg=47368518132976, dest_mask=-1, glyph=47368518132976) at glyphs.c:776
#8 0x000000000052c1ab in make_image_instance_1 (data=13665648, domain=13542112,
dest_types=47368518132976) at glyphs.c:1476
[...]
I would be super-interested in the values of ximage, of ximage->f, and of
ximage->f.destroy_image in that stack frame. You’ll need to do something
like the following within GDB to have that shown:
(gdb) up 6
(gdb) p ximage
(gdb) p ximage->f
(gdb) p ximage->f.destroy_image
Thanks for investigating this,
Aidan
--
¿Dónde estará ahora mi sobrino Yoghurtu Nghé, que tuvo que huir
precipitadamente de la aldea por culpa de la escasez de rinocerontes?
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1:50 p.m.
New subject: [Bug: 21.4.21] Segfault on reading png
On Thu, 26 Jun 2008 23:39:48 +0200, Aidan wrote:
I would be super-interested in the values of ximage, of ximage->f,
and
of ximage-> f.destroy_image in that stack frame. You’ll need to do
something like the following within GDB to have that shown:
(gdb) up 6
(gdb) p ximage
(gdb) p ximage->f
(gdb) p ximage->f.destroy_image
up 6 didn't work ('No symbol "ximage" in current context.'), so I
tried
up 5 instead and got this (complete output included at the bottom):
(gdb) up 5
#5 0x00000000005d434c in x_init_image_instance_from_eimage (ii=0xdb0160, width=63,
height=19, slices=1,
eimage=0xdcf120
"âáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáä}}{âáäâáäâáäâá"...,
dest_mask=-1,
instantiator=13493120, domain=13403264) at glyphs-x.c:988
988 XDestroyImage (ximage);
(gdb) p ximage
$1 = (XImage *) 0xdc91f0
(gdb) p ximage->f
$2 = {create_image = 0x7f8c7e147e10 <XCreateImage>, destroy_image = 0x7f8c7e1481b0,
get_pixel = 0x7f8c7e147570,
put_pixel = 0x7f8c7e147880, sub_image = 0x7f8c7e147ff0, add_pixel = 0x7f8c7e147c90}
(gdb) p ximage->f.destroy_image
$3 = (int (*)(struct _XImage *)) 0x7f8c7e1481b0
Thanks for investigating this,
Thank you for that! :-)
Best regards,
Adam
== full output: ==
$ ulimit -c unlimited
$ xemacs --vanilla /usr/lib/xemacs-21.4.21/etc/custom/reset-up.png
Warning: Missing charsets in String to FontSet conversion
Fatal error (11).
Your files have been auto-saved.
Use `M-x recover-session' to recover them.
Your version of XEmacs was distributed with a PROBLEMS file that may describe
your crash, and with luck a workaround. Please check it first, but do report
the crash anyway. Please report this bug by invoking M-x report-emacs-bug,
or by selecting `Send Bug Report' from the Help menu. If necessary, send
ordinary email to `xemacs-beta(a)xemacs.org'. *MAKE SURE* to include the XEmacs
configuration from M-x describe-installation, or equivalently the file
Installation in the top of the build tree.
*Please* try *hard* to obtain a C stack backtrace; without it, we are unlikely
to be able to analyze the problem. Locate the core file produced as a result
of this crash (often called `core' or `core.<process-id>', and located in
the directory in which you started XEmacs or your home directory), and type
gdb /usr/bin/xemacs core
then type `where' at the debugger prompt. No GDB on your system? You may
have DBX, or XDB, or SDB. (Ask your system administrator if you need help.)
If no core file was produced, enable them (often with `ulimit -c unlimited'
in case of future recurrance of the crash.
Lisp backtrace follows:
# (unwind-protect ...)
# (unwind-protect ...)
# (catch #<INTERNAL OBJECT (XEmacs bug?) (opaque-ptr, adr=0x99b228) 0x9c39d0>
...)
# (unwind-protect ...)
make-image-instance([png :data "�©PNG\n\n
1:58 p.m.
New subject: [Bug: 21.4.21] Segfault on reading png
Sorry to bother again: Aidan, did you have a chance to look at this?
Anything more I can do to provide relevant data/other things I should
try?
(My XEmacs/Gnus keeps crashing when colleagues send me email with images
inline, it is driving me nuts :-))
Best regards,
Adam
On Sun, 29 Jun 2008 14:50:20 +0200, Adam wrote:
On Thu, 26 Jun 2008 23:39:48 +0200, Aidan wrote:
> I would be super-interested in the values of ximage, of
ximage->f, and
> of ximage-> f.destroy_image in that stack frame. You’ll need to do
> something like the following within GDB to have that shown:
> (gdb) up 6
> (gdb) p ximage
> (gdb) p ximage->f
> (gdb) p ximage->f.destroy_image
up 6 didn't work ('No symbol "ximage" in current
context.'), so I tried
up 5 instead and got this (complete output included at the bottom):
(gdb) up 5
#5 0x00000000005d434c in x_init_image_instance_from_eimage (ii=0xdb0160, width=63,
height=19, slices=1,
eimage=0xdcf120
"âáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáäâáä}}{âáäâáäâáäâá"...,
dest_mask=-1,
instantiator=13493120, domain=13403264) at glyphs-x.c:988
988 XDestroyImage (ximage);
(gdb) p ximage
$1 = (XImage *) 0xdc91f0
(gdb) p ximage->f
$2 = {create_image = 0x7f8c7e147e10 <XCreateImage>, destroy_image =
0x7f8c7e1481b0, get_pixel = 0x7f8c7e147570,
put_pixel = 0x7f8c7e147880, sub_image = 0x7f8c7e147ff0, add_pixel = 0x7f8c7e147c90}
(gdb) p ximage->f.destroy_image
$3 = (int (*)(struct _XImage *)) 0x7f8c7e1481b0
--
"But after all, who is? At least in our case - no one Adam Sjøgren
is such a great musician. But we are stubborn." asjo(a)koldfront.dk
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