Re: emacs-19.34 segfaults when built with Xfree 4.3.0(glibc2.3.x,gcc 3.2)

[Hin-Tak Leung]

Here is the long awaited gdb back trace and strace. It seems to die
at the same place that emacs-21/AIX dies if it is run over a slow
dial-up connection (there were two different patches for that, one of
them by Mr Stallman himself no less, if I remember correctly)
- probably not related. Thought I'd mention this just in case.
==========================
> gdb emacs-19.34
GNU gdb 5.3
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This GDB was configured as "i386-slackware-linux"...
(gdb) run
Starting program: /usr/local/bin/emacs-19.34

Program received signal SIGSEGV, Segmentation fault.
0x400908b3 in XtInitializeWidgetClass () from /usr/X11R6/lib/libXt.so.6
(gdb) bt
#0  0x400908b3 in XtInitializeWidgetClass () from /usr/X11R6/lib/libXt.so.6
#1  0x400916a2 in _XtCreateWidget () from /usr/X11R6/lib/libXt.so.6
#2  0x400917c5 in XtCreateWidget () from /usr/X11R6/lib/libXt.so.6
#3  0x08075141 in x_window ()
#4  0x08076228 in Fx_create_frame ()
#5  0x080c65cb in Ffuncall ()
#6  0x080db3f3 in Fbyte_code ()
#7  0x080c6a8a in funcall_lambda ()
#8  0x080c64dc in Ffuncall ()
#9  0x080db3f3 in Fbyte_code ()
#10 0x080c6a8a in funcall_lambda ()
#11 0x080c64dc in Ffuncall ()
#12 0x080db3f3 in Fbyte_code ()
#13 0x080c6a8a in funcall_lambda ()
#14 0x080c64dc in Ffuncall ()
#15 0x080db3f3 in Fbyte_code ()
#16 0x080c6a8a in funcall_lambda ()
#17 0x080c64dc in Ffuncall ()
#18 0x080db3f3 in Fbyte_code ()
#19 0x080c6a8a in funcall_lambda ()
#20 0x080c687e in apply_lambda ()
#21 0x080c5564 in Feval ()
#22 0x0807fa43 in top_level_2 ()
#23 0x080c47ac in internal_condition_case ()
#24 0x0807fa80 in top_level_1 ()
#25 0x080c431b in internal_catch ()
#26 0x0807f9ae in command_loop ()
#27 0x0807f623 in recursive_edit_1 ()
#28 0x0807f6f8 in Frecursive_edit ()
#29 0x0807e5e5 in main ()
#30 0x40240bb4 in __libc_start_main () from /lib/libc.so.6
(gdb)
=================
The last few lines of strace:
=================
open("/usr/X11R6/lib/X11/icons/default/index.theme", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0755, st_size=27, ...}) = 0
old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 
0x401c3000
read(3, "[Icon Theme]\nInherits=core\n", 4096) = 27
close(3)                                = 0
munmap(0x401c3000, 4096)                = 0
--- SIGSEGV (Segmentation fault) ---
rt_sigaction(SIGSEGV, {SIG_DFL}, {0x807dbf0, [], SA_RESTART|0x4000000}, 8) = 0
getpgrp()                               = 11004
ioctl(0, 0x540f, [11004])               = 0
write(2, "Fatal error (11).", 17)       = 17
rt_sigaction(SIGIO, {SIG_IGN}, {0x80845b0, [], SA_RESTART|0x4000000}, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [SEGV 35 43 44 45 46 47 52 53 60 61], [SEGV], 8) = 0
getpid()                                = 11005
kill(11005, SIGSEGV)                    = 0
--- SIGSEGV (Segmentation fault) ---
+++ killed by SIGSEGV +++
================================

Thien-Thi Nguyen wrote:
> Hin-Tak Leung <hintak_leung@yahoo.co.uk> writes:
>
>    (Sigh). I would have been a lot happier if one of you had
>    replied with "get me a gdb back strace" than having to digress
>    to lengthy philosphical discussion on reasons to use an
>    older version, or resorting to foul languages.
>
> although it is encouraging that you know yourself well enough to say
> this, i confess to not feeling comfortable ordering you about like an
> employee.  these lengthy discussions surely would be better replaced by
> some concrete information (as "concrete" as information can be ;-), it
> seems you're saying.  the reasons for using this version (or any version
> for that matter) are not really germaine to debugging the problem, you
> also note.
>
>    As I said, I would prefer a "yes" or "no" to the gdb debug
>    question. It isn't to difficult to answer either:
>    (1) "possibly, depending on how deep the problem is; can't promise"
>    (2) "Sorry no, no eperience with gdb whatsoever"
>
> what if some people on the list respond (1) and some people respond
> (2) -- what have you gained and/or lost by this exercise?
>
>    But you are trying to draw into philosophical discussion again.
>    (I guess that's still better than the "get a f*cking life"
>    or "cheeky f*cker" replies)
>
> a personal quirk, no doubt: all discussion is philosophical to me, even
> those involving hard bits of free software artifact (both pre- and post-
> core dump ;-).
>
>    If I had sounded impatient, I had not resort to verbal
>    violence as some others did.
>
> sometimes the sudden move is easy to interpret as both violent and
> beautiful, and sometimes funny and sometimes sad.  where there is room
> for interpretation there is room for misunderstanding (and bugs!).
>
> thi