* crash in GC
@ 2002-05-22 19:06 Sam Steingold
2002-05-24 0:44 ` Richard Stallman
0 siblings, 1 reply; 10+ messages in thread
From: Sam Steingold @ 2002-05-22 19:06 UTC (permalink / raw)
GNU Emacs 21.2.50.9 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2002-05-20 on glip.premonitia.com
current CVS emacs crashed after a couple of days (=> it's not _that_
current :-) in GC:
(gdb) run --
Starting program: /usr/local/src/emacs/src/emacs --
Program received signal SIGSEGV, Segmentation fault.
allocate_string () at alloc.c:1332
1332 string_free_list = NEXT_FREE_LISP_STRING (s);
(gdb) where
#0 allocate_string () at alloc.c:1332
#1 0x081131d5 in make_uninit_multibyte_string (nchars=5, nbytes=5)
at alloc.c:1873
#2 0x081131a4 in make_uninit_string (length=5) at alloc.c:1854
#3 0x0811306d in make_unibyte_string (contents=0xa684d35 "local", length=5)
at alloc.c:1777
#4 0x080f63b8 in Ffile_name_nondirectory (filename=959205260) at fileio.c:495
#5 0x08127242 in Ffuncall (nargs=2, args=0xbfffd060) at eval.c:2721
#6 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#7 0x0812777a in funcall_lambda (fun=1209787120, nargs=3,
arg_vector=0xbfffd18c) at eval.c:2908
#8 0x08127345 in Ffuncall (nargs=4, args=0xbfffd188) at eval.c:2778
#9 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#10 0x0812777a in funcall_lambda (fun=1209787120, nargs=3,
arg_vector=0xbfffd2ac) at eval.c:2908
#11 0x08127345 in Ffuncall (nargs=4, args=0xbfffd2a8) at eval.c:2778
#12 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#13 0x0812777a in funcall_lambda (fun=1209787120, nargs=3,
arg_vector=0xbfffd3cc) at eval.c:2908
#14 0x08127345 in Ffuncall (nargs=4, args=0xbfffd3c8) at eval.c:2778
#15 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#16 0x0812777a in funcall_lambda (fun=1209787120, nargs=3,
arg_vector=0xbfffd4ec) at eval.c:2908
#17 0x08127345 in Ffuncall (nargs=4, args=0xbfffd4e8) at eval.c:2778
#18 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#19 0x0812777a in funcall_lambda (fun=1209787120, nargs=3,
arg_vector=0xbfffd60c) at eval.c:2908
#20 0x08127345 in Ffuncall (nargs=4, args=0xbfffd608) at eval.c:2778
#21 0x0814dbb4 in Fbyte_code (bytestr=941351724, vector=1209787544, maxdepth=7)
at bytecode.c:709
#22 0x0812777a in funcall_lambda (fun=1209787120, nargs=1,
arg_vector=0xbfffd728) at eval.c:2908
#23 0x08127345 in Ffuncall (nargs=2, args=0xbfffd724) at eval.c:2778
#24 0x0814dbb4 in Fbyte_code (bytestr=941358300, vector=1209794356, maxdepth=8)
at bytecode.c:709
#25 0x0812777a in funcall_lambda (fun=1209793688, nargs=2,
arg_vector=0xbfffd844) at eval.c:2908
#26 0x08127345 in Ffuncall (nargs=3, args=0xbfffd840) at eval.c:2778
#27 0x0814dbb4 in Fbyte_code (bytestr=953198452, vector=1217927472, maxdepth=3)
at bytecode.c:709
#28 0x0812777a in funcall_lambda (fun=1213189304, nargs=1,
arg_vector=0xbfffd958) at eval.c:2908
#29 0x08127345 in Ffuncall (nargs=2, args=0xbfffd954) at eval.c:2778
#30 0x0814dbb4 in Fbyte_code (bytestr=953810388, vector=1221775480, maxdepth=5)
at bytecode.c:709
#31 0x0812777a in funcall_lambda (fun=1221775632, nargs=1,
arg_vector=0xbfffda74) at eval.c:2908
#32 0x08127345 in Ffuncall (nargs=2, args=0xbfffda70) at eval.c:2778
#33 0x0814dbb4 in Fbyte_code (bytestr=949445876, vector=1222076888, maxdepth=4)
at bytecode.c:709
#34 0x0812777a in funcall_lambda (fun=1222077072, nargs=2,
arg_vector=0xbfffdb84) at eval.c:2908
#35 0x08127345 in Ffuncall (nargs=3, args=0xbfffdb80) at eval.c:2778
#36 0x0814dbb4 in Fbyte_code (bytestr=949446100, vector=1220678008, maxdepth=3)
---Type <return> to continue, or q <return> to quit---
at bytecode.c:709
#37 0x0812777a in funcall_lambda (fun=1222076816, nargs=0,
arg_vector=0xbfffdc94) at eval.c:2908
#38 0x08127345 in Ffuncall (nargs=1, args=0xbfffdc90) at eval.c:2778
#39 0x0814dbb4 in Fbyte_code (bytestr=949446452, vector=1222548640, maxdepth=3)
at bytecode.c:709
#40 0x0812777a in funcall_lambda (fun=1220677696, nargs=2,
arg_vector=0xbfffdda4) at eval.c:2908
#41 0x08127345 in Ffuncall (nargs=3, args=0xbfffdda0) at eval.c:2778
#42 0x08126c16 in Fapply (nargs=2, args=0xbfffde30) at eval.c:2228
#43 0x08126f57 in apply1 (fn=415925924, arg=1506205316) at eval.c:2484
#44 0x08153f08 in read_process_output_call (fun_and_args=1506205308)
at process.c:4220
#45 0x081258d4 in internal_condition_case_1 (
bfun=0x8153ef0 <read_process_output_call>, arg=1506205308,
handlers=405348836, hfun=0x8153f0c <read_process_output_error_handler>)
at eval.c:1374
#46 0x08154299 in read_process_output (proc=1239015504, channel=10)
at process.c:4423
#47 0x08153c0f in wait_reading_process_input (time_limit=-1, microsecs=0,
read_kbd=0, do_display=0) at process.c:4061
#48 0x08152c7d in Faccept_process_output (process=1227215048, timeout=1,
timeout_msecs=405348836) at process.c:3346
#49 0x08127272 in Ffuncall (nargs=3, args=0xbfffe620) at eval.c:2728
#50 0x0814dbb4 in Fbyte_code (bytestr=949035092, vector=1217472632, maxdepth=3)
at bytecode.c:709
#51 0x0812777a in funcall_lambda (fun=1217472792, nargs=2,
arg_vector=0xbfffe734) at eval.c:2908
#52 0x08127345 in Ffuncall (nargs=3, args=0xbfffe730) at eval.c:2778
#53 0x0814dbb4 in Fbyte_code (bytestr=947887996, vector=1216249832, maxdepth=4)
at bytecode.c:709
#54 0x0812777a in funcall_lambda (fun=1216324440, nargs=1,
arg_vector=0xbfffe844) at eval.c:2908
#55 0x08127345 in Ffuncall (nargs=2, args=0xbfffe840) at eval.c:2778
#56 0x0814dbb4 in Fbyte_code (bytestr=947888364, vector=1217299368, maxdepth=6)
at bytecode.c:709
#57 0x0812777a in funcall_lambda (fun=1217304960, nargs=2,
arg_vector=0xbfffe964) at eval.c:2908
#58 0x08127345 in Ffuncall (nargs=3, args=0xbfffe960) at eval.c:2778
#59 0x0814dbb4 in Fbyte_code (bytestr=947888444, vector=1217304816, maxdepth=4)
at bytecode.c:709
#60 0x0812777a in funcall_lambda (fun=1217303040, nargs=1,
arg_vector=0xbfffea74) at eval.c:2908
#61 0x08127345 in Ffuncall (nargs=2, args=0xbfffea70) at eval.c:2778
#62 0x0814dbb4 in Fbyte_code (bytestr=949069676, vector=1217506736, maxdepth=4)
at bytecode.c:709
#63 0x0812777a in funcall_lambda (fun=1217506928, nargs=1,
arg_vector=0xbfffeb84) at eval.c:2908
#64 0x08127345 in Ffuncall (nargs=2, args=0xbfffeb80) at eval.c:2778
#65 0x0814dbb4 in Fbyte_code (bytestr=949090700, vector=1217530112, maxdepth=8)
at bytecode.c:709
#66 0x0812777a in funcall_lambda (fun=1217530360, nargs=2,
arg_vector=0xbfffeca4) at eval.c:2908
#67 0x08127345 in Ffuncall (nargs=3, args=0xbfffeca0) at eval.c:2778
#68 0x0814dbb4 in Fbyte_code (bytestr=949090876, vector=1217148880, maxdepth=3)
at bytecode.c:709
#69 0x0812777a in funcall_lambda (fun=1217530520, nargs=2,
arg_vector=0xbfffedb4) at eval.c:2908
#70 0x08127345 in Ffuncall (nargs=3, args=0xbfffedb0) at eval.c:2778
---Type <return> to continue, or q <return> to quit---
#71 0x0814dbb4 in Fbyte_code (bytestr=946645644, vector=1214997400, maxdepth=4)
at bytecode.c:709
#72 0x0812777a in funcall_lambda (fun=1214997568, nargs=2,
arg_vector=0xbfffeec4) at eval.c:2908
#73 0x08127345 in Ffuncall (nargs=3, args=0xbfffeec0) at eval.c:2778
#74 0x0814dbb4 in Fbyte_code (bytestr=945643636, vector=1216236768, maxdepth=8)
at bytecode.c:709
#75 0x0812777a in funcall_lambda (fun=1216237264, nargs=1,
arg_vector=0xbfffefe4) at eval.c:2908
#76 0x08127345 in Ffuncall (nargs=2, args=0xbfffefe0) at eval.c:2778
#77 0x0814dbb4 in Fbyte_code (bytestr=947647892, vector=1216714008, maxdepth=3)
at bytecode.c:709
#78 0x0812777a in funcall_lambda (fun=1216714216, nargs=1,
arg_vector=0xbffff124) at eval.c:2908
#79 0x08127345 in Ffuncall (nargs=2, args=0xbffff120) at eval.c:2778
#80 0x08123fb7 in Fcall_interactively (function=409705516,
record_flag=405348836, keys=1223540536) at callint.c:787
#81 0x080dd546 in Fcommand_execute (cmd=409705516, record_flag=405348836,
keys=405348836, special=405348836) at keyboard.c:9338
#82 0x080d4304 in command_loop_1 () at keyboard.c:1662
#83 0x081257ea in internal_condition_case (bfun=0x80d3780 <command_loop_1>,
handlers=405445324, hfun=0x80d33c0 <cmd_error>) at eval.c:1334
#84 0x080d3662 in command_loop_2 () at keyboard.c:1254
#85 0x081253ab in internal_catch (tag=405406652,
func=0x80d3644 <command_loop_2>, arg=405348836) at eval.c:1094
#86 0x080d35f0 in command_loop () at keyboard.c:1233
#87 0x080d31a4 in recursive_edit_1 () at keyboard.c:959
#88 0x080d32bb in Frecursive_edit () at keyboard.c:1015
#89 0x080d2244 in main (argc=2, argv=0xbffff8c4, envp=0xbffff8d0)
at emacs.c:1624
#90 0x42017499 in __libc_start_main () from /lib/i686/libc.so.6
(gdb) p s
$1 = (struct Lisp_String *) 0xc8
(gdb) p *s
Cannot access memory at address 0xc8
(gdb) up
#1 0x081131d5 in make_uninit_multibyte_string (nchars=5, nbytes=5)
at alloc.c:1873
1873 s = allocate_string ();
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
allocate_string () at alloc.c:1332
1332 string_free_list = NEXT_FREE_LISP_STRING (s);
(gdb)
--
Sam Steingold (http://www.podval.org/~sds) running RedHat7.2 GNU/Linux
<http://www.camera.org> <http://www.iris.org.il> <http://www.memri.org/>
<http://www.mideasttruth.com/> <http://www.palestine-central.com/links.html>
"A pint of sweat will save a gallon of blood." -- George S. Patton
^ permalink raw reply [flat|nested] 10+ messages in thread* crash in GC
@ 2002-12-15 20:17 Sam Steingold
2002-12-19 18:33 ` Richard Stallman
0 siblings, 1 reply; 10+ messages in thread
From: Sam Steingold @ 2002-12-15 20:17 UTC (permalink / raw)
GNU Emacs 21.3.50.21 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
of 2002-12-15 on loiso.podval.org
(gdb) run --
Starting program: /usr/local/src/emacs/src/emacs --
Program received signal SIGSEGV, Segmentation fault.
mem_find (start=0xa6fef5c) at alloc.c:2751
2751 while (start < p->start || start >= p->end)
(gdb) p start
$1 = (void *) 0xa6fef5c
(gdb) p p
$2 = (struct mem_node *) 0x0
(gdb) where
#0 mem_find (start=0xa6fef5c) at alloc.c:2751
#1 0x0811d144 in mark_maybe_object (obj=1517285212) at alloc.c:3336
#2 0x0811afd9 in mark_memory (start=0xbfffd240, end=0xbffff3dc)
at alloc.c:3545
#3 0x0811b02c in mark_stack () at alloc.c:3781
#4 0x0811b557 in Fgarbage_collect () at alloc.c:4152
#5 0x0812f314 in Ffuncall (nargs=3, args=0xbfffd3d0) at eval.c:2681
#6 0x0812eb0e in Fapply (nargs=2, args=0xbfffd460) at eval.c:2248
#7 0x0812eefd in apply1 (fn=412461620, arg=1494465156) at eval.c:2504
#8 0x0815d478 in read_process_output_call (fun_and_args=1494465132)
at process.c:4293
#9 0x0812d810 in internal_condition_case_1 (
bfun=0x815d460 <read_process_output_call>, arg=1494465132,
handlers=405471332, hfun=0x815d47c <read_process_output_error_handler>)
at eval.c:1392
#10 0x0815d6f9 in read_process_output (proc=1259168120, channel=1259168120)
at process.c:4496
#11 0x0815ccbe in wait_reading_process_input (time_limit=-1, microsecs=0,
read_kbd=0, do_display=0) at process.c:4134
#12 0x0815c0ff in Faccept_process_output (process=1259168120, timeout=16,
timeout_msecs=0) at process.c:3415
#13 0x0812f22e in Ffuncall (nargs=3, args=0xbfffdbf0) at eval.c:2741
#14 0x08156d54 in Fbyte_code (bytestr=412458708, vector=2,
maxdepth=-1073750944) at bytecode.c:709
#15 0x0812f51f in funcall_lambda (fun=1217666352, nargs=2,
arg_vector=0xbfffdd74) at eval.c:2928
#16 0x0812f107 in Ffuncall (nargs=3, args=0xbfffdd70) at eval.c:2798
#17 0x08156d54 in Fbyte_code (bytestr=405582564, vector=2,
maxdepth=-1073750672) at bytecode.c:709
#18 0x0812f51f in funcall_lambda (fun=1217117720, nargs=1,
arg_vector=0xbfffde84) at eval.c:2928
#19 0x0812f107 in Ffuncall (nargs=2, args=0xbfffde80) at eval.c:2798
#20 0x08156d54 in Fbyte_code (bytestr=411191172, vector=1,
maxdepth=-1073750400) at bytecode.c:709
#21 0x0812f51f in funcall_lambda (fun=1217447328, nargs=2,
arg_vector=0xbfffdfa4) at eval.c:2928
#22 0x0812f107 in Ffuncall (nargs=3, args=0xbfffdfa0) at eval.c:2798
#23 0x08156d54 in Fbyte_code (bytestr=406274076, vector=2,
maxdepth=-1073750112) at bytecode.c:709
#24 0x0812f51f in funcall_lambda (fun=1217583280, nargs=2,
arg_vector=0xbfffe0b4) at eval.c:2928
#25 0x0812f107 in Ffuncall (nargs=3, args=0xbfffe0b0) at eval.c:2798
#26 0x08156d54 in Fbyte_code (bytestr=406274076, vector=2,
maxdepth=-1073749840) at bytecode.c:709
#27 0x0812f51f in funcall_lambda (fun=1217290864, nargs=2,
arg_vector=0xbfffe1d4) at eval.c:2928
#28 0x0812f107 in Ffuncall (nargs=3, args=0xbfffe1d0) at eval.c:2798
#29 0x08156d54 in Fbyte_code (bytestr=405875452, vector=2,
maxdepth=-1073749552) at bytecode.c:709
#30 0x0812f51f in funcall_lambda (fun=1217301688, nargs=2,
arg_vector=0xbfffe2f4) at eval.c:2928
#31 0x0812f107 in Ffuncall (nargs=3, args=0xbfffe2f0) at eval.c:2798
---Type <return> to continue, or q <return> to quit---
#32 0x08156d54 in Fbyte_code (bytestr=410750900, vector=2,
maxdepth=-1073749264) at bytecode.c:709
#33 0x0812f51f in funcall_lambda (fun=1216588808, nargs=2,
arg_vector=0xbfffe404) at eval.c:2928
#34 0x0812f107 in Ffuncall (nargs=3, args=0xbfffe400) at eval.c:2798
#35 0x08156d54 in Fbyte_code (bytestr=405579572, vector=2,
maxdepth=-1073748992) at bytecode.c:709
#36 0x0812f51f in funcall_lambda (fun=1216608640, nargs=2,
arg_vector=0xbfffe524) at eval.c:2928
#37 0x0812f107 in Ffuncall (nargs=3, args=0xbfffe520) at eval.c:2798
#38 0x08156d54 in Fbyte_code (bytestr=405579572, vector=2,
maxdepth=-1073748704) at bytecode.c:709
#39 0x0812f51f in funcall_lambda (fun=1216183264, nargs=1,
arg_vector=0xbfffe644) at eval.c:2928
#40 0x0812f107 in Ffuncall (nargs=2, args=0xbfffe640) at eval.c:2798
#41 0x08156d54 in Fbyte_code (bytestr=408621940, vector=1,
maxdepth=-1073748416) at bytecode.c:709
#42 0x0812f51f in funcall_lambda (fun=1216172928, nargs=3,
arg_vector=0xbfffe764) at eval.c:2928
#43 0x0812f107 in Ffuncall (nargs=4, args=0xbfffe760) at eval.c:2798
#44 0x08156d54 in Fbyte_code (bytestr=411108948, vector=3,
maxdepth=-1073748128) at bytecode.c:709
#45 0x0812e87a in Feval (form=136774776) at eval.c:2096
#46 0x0812c3b1 in Fprogn (args=0) at eval.c:424
#47 0x0812fcb7 in unbind_to (count=15, value=405471332) at eval.c:3097
#48 0x08156da6 in Fbyte_code (bytestr=411108948, vector=3,
maxdepth=-1073747696) at bytecode.c:730
#49 0x0812f51f in funcall_lambda (fun=1216709400, nargs=3,
arg_vector=0xbfffea24) at eval.c:2928
#50 0x0812f107 in Ffuncall (nargs=4, args=0xbfffea20) at eval.c:2798
#51 0x08156d54 in Fbyte_code (bytestr=411108924, vector=3,
maxdepth=-1073747424) at bytecode.c:709
#52 0x0812f51f in funcall_lambda (fun=1216424088, nargs=3,
arg_vector=0xbfffeb34) at eval.c:2928
#53 0x0812f107 in Ffuncall (nargs=4, args=0xbfffeb30) at eval.c:2798
#54 0x08156d54 in Fbyte_code (bytestr=411108924, vector=3,
maxdepth=-1073747152) at bytecode.c:709
#55 0x0812f51f in funcall_lambda (fun=1216707888, nargs=2,
arg_vector=0xbfffec44) at eval.c:2928
#56 0x0812f107 in Ffuncall (nargs=3, args=0xbfffec40) at eval.c:2798
#57 0x08156d54 in Fbyte_code (bytestr=411108924, vector=2,
maxdepth=-1073746880) at bytecode.c:709
#58 0x0812f51f in funcall_lambda (fun=1216423448, nargs=0,
arg_vector=0xbfffed54) at eval.c:2928
#59 0x0812f107 in Ffuncall (nargs=1, args=0xbfffed50) at eval.c:2798
#60 0x08156d54 in Fbyte_code (bytestr=408565300, vector=0,
maxdepth=-1073746608) at bytecode.c:709
#61 0x0812f51f in funcall_lambda (fun=1214571896, nargs=1,
arg_vector=0xbfffee94) at eval.c:2928
#62 0x0812f107 in Ffuncall (nargs=2, args=0xbfffee90) at eval.c:2798
#63 0x0812af51 in Fcall_interactively (function=405471332,
record_flag=405471332, keys=1225264840) at callint.c:819
---Type <return> to continue, or q <return> to quit---
#64 0x080e147a in Fcommand_execute (cmd=409258084, record_flag=405471332,
keys=405471332, special=405471332) at keyboard.c:9536
#65 0x080d6d8a in command_loop_1 () at keyboard.c:1690
#66 0x0812d71e in internal_condition_case (bfun=0x80d6a60 <command_loop_1>,
handlers=405567940, hfun=0x80d665c <cmd_error>) at eval.c:1352
#67 0x080d6946 in command_loop_2 () at keyboard.c:1274
#68 0x0812d2d9 in internal_catch (tag=0, func=0x80d6928 <command_loop_2>,
arg=405471332) at eval.c:1112
#69 0x080d68fc in command_loop () at keyboard.c:1253
#70 0x080d643b in recursive_edit_1 () at keyboard.c:969
#71 0x080d6548 in Frecursive_edit () at keyboard.c:1025
#72 0x080d4ea3 in main (argc=2, argv=0xbffff654) at emacs.c:1647
#73 0x420158d4 in __libc_start_main () from /lib/i686/libc.so.6
(gdb) up
#1 0x0811d144 in mark_maybe_object (obj=1517285212) at alloc.c:3336
3336 struct mem_node *m = mem_find (po);
(gdb) p po
$3 = (void *) 0xa6fef5c
(gdb) p *po
Attempt to dereference a generic pointer.
(gdb) down
#0 mem_find (start=0xa6fef5c) at alloc.c:2751
2751 while (start < p->start || start >= p->end)
(gdb) list
2746 /* Make the search always successful to speed up the loop below. */
2747 mem_z.start = start;
2748 mem_z.end = (char *) start + 1;
2749
2750 p = mem_root;
2751 while (start < p->start || start >= p->end)
2752 p = start < p->start ? p->left : p->right;
2753 return p;
2754 }
2755
(gdb) p mem_root
$4 = (struct mem_node *) 0x843c8e0
(gdb) p *mem_root
$5 = {
left = 0x83c0968,
right = 0x8c33c58,
parent = 0x0,
start = 0x847eb18,
end = 0x847ef14,
color = MEM_BLACK,
type = MEM_TYPE_CONS
}
(gdb) p p
$6 = (struct mem_node *) 0x0
(gdb) p *mem_root->lift
There is no member named lift.
(gdb) p *mem_root->left
$7 = {
left = 0x83ad420,
right = 0x83d6bd8,
parent = 0x843c8e0,
start = 0x83c0948,
end = 0x83c0964,
color = MEM_BLACK,
type = MEM_TYPE_VECTOR
}
(gdb) p *mem_root->left->right
$8 = {
left = 0x83cbaa0,
right = 0x83e0d50,
parent = 0x83c0968,
start = 0x83d6bb8,
end = 0x83d6bd4,
color = MEM_BLACK,
type = MEM_TYPE_VECTOR
}
(gdb) p *mem_root->left->left
$9 = {
left = 0x83a4658,
right = 0x83b73a0,
parent = 0x83c0968,
start = 0x83ad400,
end = 0x83ad41c,
color = MEM_BLACK,
type = MEM_TYPE_VECTOR
}
(gdb) p *mem_root->right->right
$10 = {
left = 0x8cdceb8,
right = 0x8e7b320,
parent = 0x8c33c58,
start = 0x8d9ab00,
end = 0x8d9aef4,
color = MEM_BLACK,
type = MEM_TYPE_SYMBOL
}
(gdb) p *mem_root->right->left
$11 = {
left = 0x8639d88,
right = 0x8bea0c0,
parent = 0x8c33c58,
start = 0x88af258,
end = 0x88af274,
color = MEM_BLACK,
type = MEM_TYPE_VECTOR
}
--
Sam Steingold (http://www.podval.org/~sds) running RedHat8 GNU/Linux
<http://www.camera.org> <http://www.iris.org.il> <http://www.memri.org/>
<http://www.mideasttruth.com/> <http://www.palestine-central.com/links.html>
Warning! Dates in calendar are closer than they appear!
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: crash in GC
2002-12-15 20:17 Sam Steingold
@ 2002-12-19 18:33 ` Richard Stallman
0 siblings, 0 replies; 10+ messages in thread
From: Richard Stallman @ 2002-12-19 18:33 UTC (permalink / raw)
Cc: emacs-devel
The first step of debugging this is to track the path
that mem_find would have taken thru the mem_root data structure
and see if you can find anything invalid in that data structure.
I suspect you will find that a `right' or `left' pointer is NULL.
That shouldn't ever happen; in a leaf, these pointers should be
MEM_NIL which is not NULL. At least, that's what I concluded
from reading the code.
I will install this change to document the data structure more
clearly.
*** alloc.c.~1.282.~ Thu Nov 14 21:41:01 2002
--- alloc.c Thu Dec 19 11:48:25 2002
***************
*** 341,347 ****
struct mem_node
{
! struct mem_node *left, *right, *parent;
/* Start and end of allocated region. */
void *start, *end;
--- 341,352 ----
struct mem_node
{
! /* Children of this node. These pointers are never NULL. When there
! is no child, the value is MEM_NIL, which points to a dummy node. */
! struct mem_node *left, *right;
!
! /* The parent of this node. In the root node, this is NULL. */
! struct mem_node *parent;
/* Start and end of allocated region. */
void *start, *end;
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2002-12-19 18:33 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2002-05-22 19:06 crash in GC Sam Steingold
2002-05-24 0:44 ` Richard Stallman
2002-05-24 14:19 ` Sam Steingold
2002-05-24 18:07 ` Eli Zaretskii
2002-05-24 20:50 ` Sam Steingold
2002-05-25 1:04 ` Ken Raeburn
2002-05-25 8:26 ` Eli Zaretskii
2002-05-25 21:20 ` Richard Stallman
-- strict thread matches above, loose matches on Subject: below --
2002-12-15 20:17 Sam Steingold
2002-12-19 18:33 ` Richard Stallman
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