Re: Ediff frequently crashes emacs.

[Peter Seibel]

address@hidden (Kim F. Storm) writes:

> Peter Seibel <address@hidden> writes:
>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0420824ed in bcopy () from /lib/i686/libc.so.6
>> (gdb) bt
>> #0  0x420824ed in bcopy () from /lib/i686/libc.so.6
>> #1  0x0804ff39 in safe_bcopy (from=0x9c2ea64 "C#\032\b\350\371\373\t\b", 
>>     to=0x989dad8 "h*S\t", size=156445280) at dispnew.c:490
>
> That size is completely bogus.  It looks more like a pointer than a length.
> And it definitely cannot be the size of a small string.

I just got another SIGSEGV in a different place but again while using
ediff. Here's what I was able to grab from GDB:

(gdb) xbacktrace
"frame-parameters"
"frame-width"
"ediff-make-frame-position"
"ediff-setup-control-frame"
"ediff-setup-windows-multiframe-compare"
"ediff-setup-windows-multiframe"
"ediff-setup-windows"
"ediff-setup"
"ediff-buffers-internal"
"ediff-buffers"
"p4-diff"
"let"
"save-excursion"
"p4-diff-opened"
"cond"
"p4-do-line"
"call-interactively"
(gdb) xtype
The history is empty.
(gdb) bt
#0  Fcons (car=137325333, cdr=163656285) at alloc.c:2374
#1  0x0805b161 in store_in_alist (alistptr=0xbfffddbc, prop=137433329, 
    val=158828941) at frame.c:1934
#2  0x0805b79a in Fframe_parameters (frame=139510708) at frame.c:2151
#3  0x08142387 in Ffuncall (nargs=2, args=0xbfffde64) at eval.c:2757
#4  0x08168b78 in Fbyte_code (bytestr=136646587, vector=136646612, maxdepth=24)
    at bytecode.c:686
#5  0x081428a3 in funcall_lambda (fun=136646540, nargs=1, 
    arg_vector=0xbfffdf84) at eval.c:2944
#6  0x08142479 in Ffuncall (nargs=2, args=0xbfffdf80) at eval.c:2814
#7  0x08168b78 in Fbyte_code (bytestr=137398075, vector=139488748, maxdepth=48)
    at bytecode.c:686
#8  0x081428a3 in funcall_lambda (fun=140371068, nargs=3, 
    arg_vector=0xbfffe0bc) at eval.c:2944
#9  0x08142479 in Ffuncall (nargs=4, args=0xbfffe0b8) at eval.c:2814
#10 0x08168b78 in Fbyte_code (bytestr=137530659, vector=138281892, maxdepth=88)
    at bytecode.c:686
#11 0x081428a3 in funcall_lambda (fun=139494148, nargs=2, 
    arg_vector=0xbfffe1f4) at eval.c:2944
#12 0x08142479 in Ffuncall (nargs=3, args=0xbfffe1f0) at eval.c:2814
#13 0x08168b78 in Fbyte_code (bytestr=137607659, vector=139425780, maxdepth=32)
    at bytecode.c:686
#14 0x081428a3 in funcall_lambda (fun=140362004, nargs=4, 
    arg_vector=0xbfffe314) at eval.c:2944
#15 0x08142479 in Ffuncall (nargs=5, args=0xbfffe310) at eval.c:2814
#16 0x08168b78 in Fbyte_code (bytestr=137622731, vector=140647444, maxdepth=40)
    at bytecode.c:686
#17 0x081428a3 in funcall_lambda (fun=140362708, nargs=4, 
    arg_vector=0xbfffe444) at eval.c:2944
#18 0x08142479 in Ffuncall (nargs=5, args=0xbfffe440) at eval.c:2814
#19 0x08168b78 in Fbyte_code (bytestr=139249347, vector=139505644, maxdepth=40)
    at bytecode.c:686
#20 0x081428a3 in funcall_lambda (fun=139442124, nargs=4, 
    arg_vector=0xbfffe574) at eval.c:2944
#21 0x08142479 in Ffuncall (nargs=5, args=0xbfffe570) at eval.c:2814
#22 0x08168b78 in Fbyte_code (bytestr=139738091, vector=139946468, maxdepth=56)
    at bytecode.c:686
#23 0x081428a3 in funcall_lambda (fun=140635260, nargs=9, 
    arg_vector=0xbfffe6a4) at eval.c:2944
#24 0x08142479 in Ffuncall (nargs=10, args=0xbfffe6a0) at eval.c:2814
#25 0x08168b78 in Fbyte_code (bytestr=139871507, vector=139414972, 
    maxdepth=128) at bytecode.c:686
#26 0x081428a3 in funcall_lambda (fun=139415204, nargs=5, 
    arg_vector=0xbfffe7f4) at eval.c:2944
#27 0x08142479 in Ffuncall (nargs=6, args=0xbfffe7f0) at eval.c:2814
#28 0x08168b78 in Fbyte_code (bytestr=139871299, vector=139763788, maxdepth=48)
    at bytecode.c:686
#29 0x081428a3 in funcall_lambda (fun=139872292, nargs=2, 
    arg_vector=0xbfffe8c0) at eval.c:2944
#30 0x081425b6 in apply_lambda (fun=139872292, args=138070477, eval_flag=1)
    at eval.c:2866
#31 0x08141b0b in Feval (form=138071245) at eval.c:2170
#32 0x0813f473 in Fprogn (args=138072517) at eval.c:408
#33 0x08142876 in funcall_lambda (fun=138067109, nargs=0, 
    arg_vector=0xbfffea70) at eval.c:2937
#34 0x081425b6 in apply_lambda (fun=138067109, args=137325329, eval_flag=1)
    at eval.c:2866
#35 0x08141b0b in Feval (form=138096469) at eval.c:2170
#36 0x0813f473 in Fprogn (args=138096477) at eval.c:408
#37 0x081401c3 in Flet (args=138099189) at eval.c:970
#38 0x0814184a in Feval (form=138100149) at eval.c:2059
#39 0x0813f473 in Fprogn (args=138065437) at eval.c:408
#40 0x08138241 in Fsave_excursion (args=138065437) at editfns.c:952
#41 0x0814184a in Feval (form=138065957) at eval.c:2059
#42 0x0813f473 in Fprogn (args=138065965) at eval.c:408
#43 0x08142876 in funcall_lambda (fun=138096341, nargs=0, 
    arg_vector=0xbfffee80) at eval.c:2937
#44 0x081425b6 in apply_lambda (fun=138096341, args=137325329, eval_flag=1)
    at eval.c:2866
#45 0x08141b0b in Feval (form=137946533) at eval.c:2170
#46 0x0813f473 in Fprogn (args=137946525) at eval.c:408
#47 0x0813f423 in Fcond (args=137946405) at eval.c:385
#48 0x0814184a in Feval (form=137949837) at eval.c:2059
#49 0x0813f473 in Fprogn (args=137949909) at eval.c:408
#50 0x08142876 in funcall_lambda (fun=137970621, nargs=0, 
    arg_vector=0xbffff1d4) at eval.c:2937
#51 0x08142479 in Ffuncall (nargs=1, args=0xbffff1d0) at eval.c:2814
#52 0x0814207c in apply1 (fn=140534057, arg=137325329) at eval.c:2507
#53 0x0813de31 in Fcall_interactively (function=140534057, 
    record_flag=17165666, keys=137382204) at callint.c:411
#54 0x080f1f59 in Fcommand_execute (cmd=140534057, record_flag=137325329, 
    keys=137325329, special=137325329) at keyboard.c:9679
#55 0x080e82f3 in command_loop_1 () at keyboard.c:1779
#56 0x081408ea in internal_condition_case (bfun=0x80e7420 <command_loop_1>, 
    handlers=137386297, hfun=0x80e6f9c <cmd_error>) at eval.c:1367
#57 0x080e7292 in command_loop_2 () at keyboard.c:1309
#58 0x08140483 in internal_catch (tag=137380321, 
    func=0x80e7274 <command_loop_2>, arg=137325329) at eval.c:1128
#59 0x080e7221 in command_loop () at keyboard.c:1288
#60 0x080e6d53 in recursive_edit_1 () at keyboard.c:981
#61 0x080e6e7b in Frecursive_edit () at keyboard.c:1042
#62 0x080e5cdf in main (argc=3, argv=0xbffff984) at emacs.c:1736
#63 0x42017499 in __libc_start_main () from /lib/i686/libc.so.6
(gdb) 


-Peter

-- 
Peter Seibel                                      address@hidden

         Lisp is the red pill. -- John Fraser, comp.lang.lisp