I was attempting to debug the flaky progress-gauge on Solaris and I
found that I could cause a core dump. I was using ielm at the time.
I accidentally wrote an infloop, and after hitting a couple of C-c's
and C-g's I got a core dump. This is reproducible (but it takes a few
tries). I had typed this into ielm:
(setq x 10)
(while (< x 101) (progress-feedback-with-label "FOO" "BAR" x))
;; please don't tell me I forgot to increment x! I know! That's=20
;; not the point!
After executing the above, some combination of C-c and C-g leads to a
core dump.
Lisp backtrace follows:
redisplay-gutter-area()
# bind (tmsg top frame value message label)
append-progress-feedback("FOO" "BAR" 10 nil)
# bind (frame value message label)
display-progress-feedback("FOO" "BAR" 10)
# bind (str)
# (unwind-protect ...)
# bind (args value fmt label)
progress-feedback-with-label("FOO" "BAR" 10)
(while (< x 101) (progress-feedback-with-label "FOO" "BAR" x))
eval((while (< x 101) (progress-feedback-with-label "FOO" "BAR" x)))
# bind (! !! !!! ielm-obuf)
byte-code("..." [!! !!! !!!save !!save !save ielm-obuf eval ! ielm-fo=
rm ielm-r esult ielm-wbuf] 4)
# (condition-case ... . ((error (byte-code "=C3\n!=C4=C3=87" ... 2)) =
(quit (byte-code "=C2=C3=C4=87" ... 1))))
# (unwind-protect ...)
# bind (!save !!save !!!save ielm-form ielm-pos ielm-result ielm-erro=
r-type ie lm-output ielm-wbuf ielm-pmark ielm-string)
ielm-eval-input("(while ( < x 101 ) (progress-feedback-with-label \"F=
OO\" \"BA R\" x))")
# bind (buf ielm-input)
ielm-send-input()
# bind (state)
#<compiled-function nil "...(59)" [comint-prompt-regexp ielm-dynamic-=
multiline -inputs ielm-dynamic-return state nil parse-partial-sex=
p ielm-pm 1 3 ielm-send-i nput 0 looking-at newline newline-and-i=
ndent] 4 ("/home/titan/charles/XEmacs/xem acs-packages/lisp/xemac=
s-devel/ielm.elc" . 4554) nil>()
call-interactively(ielm-return)
# (condition-case ... . error)
# (catch top-level ...)
Abort (core dumped)
GNU gdb 5.0
Copyright 2000 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and yo=
u are
welcome to change it and/or distribute copies of it under certain condi=
tions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for deta=
ils.
This GDB was configured as "i386-pc-solaris2.7"...
Core was generated by `./src/xemacs'.
Program terminated with signal 6, Abort.
Reading symbols from /usr/dt/lib/libXm.so.4...done.
Loaded symbols for /usr/dt/lib/libXm.so.4
Reading symbols from /usr/dt/lib/libtt.so.2...done.
Loaded symbols for /usr/dt/lib/libtt.so.2
Reading symbols from /usr/openwin/lib/libXmu.so.4...done.
Loaded symbols for /usr/openwin/lib/libXmu.so.4
Reading symbols from /usr/openwin/lib/libXt.so.4...done.
Loaded symbols for /usr/openwin/lib/libXt.so.4
Reading symbols from /usr/openwin/lib/libXext.so.0...done.
Loaded symbols for /usr/openwin/lib/libXext.so.0
Reading symbols from /usr/openwin/lib/libX11.so.4...done.
Loaded symbols for /usr/openwin/lib/libX11.so.4
Reading symbols from /usr/lib/libcurses.so.1...done.
Loaded symbols for /usr/lib/libcurses.so.1
Reading symbols from /usr/lib/libldap.so.3...done.
Loaded symbols for /usr/lib/libldap.so.3
Reading symbols from /usr/lib/libm.so.1...done.
Loaded symbols for /usr/lib/libm.so.1
Reading symbols from /usr/lib/libsocket.so.1...done.
Loaded symbols for /usr/lib/libsocket.so.1
Reading symbols from /usr/lib/libnsl.so.1...done.
Loaded symbols for /usr/lib/libnsl.so.1
Reading symbols from /usr/lib/libgen.so.1...done.
Loaded symbols for /usr/lib/libgen.so.1
Reading symbols from /usr/lib/libdl.so.1...done.
Loaded symbols for /usr/lib/libdl.so.1
Reading symbols from /usr/lib/libc.so.1...done.
Loaded symbols for /usr/lib/libc.so.1
Reading symbols from /usr/openwin/lib/libSM.so.6...done.
Loaded symbols for /usr/openwin/lib/libSM.so.6
Reading symbols from /usr/openwin/lib/libICE.so.6...done.
Loaded symbols for /usr/openwin/lib/libICE.so.6
Reading symbols from /usr/lib/libresolv.so.2...done.
Loaded symbols for /usr/lib/libresolv.so.2
Reading symbols from /usr/lib/libmp.so.2...done.
Loaded symbols for /usr/lib/libmp.so.2
#0 0xdf79e0f4 in _libc_kill () from /usr/lib/libc.so.1
(gdb) where
#0 0xdf79e0f4 in _libc_kill () from /usr/lib/libc.so.1
#1 0xdf79dad4 in kill () from /usr/lib/libc.so.1
#2 0x80be619 in fatal_error_signal (sig=3D6) at emacs.c:535
#3 0xdf74fb45 in sigacthandler () from /usr/lib/libc.so.1
#4 <signal handler called>
#5 0xdf79e0f4 in _libc_kill () from /usr/lib/libc.so.1
#6 0xdf7513f7 in abort () from /usr/lib/libc.so.1
#7 0x80c10c5 in assert_failed (file=3D0x824a44f "eval.c", line=3D1885,=
=20
expr=3D0x824a447 "abort()") at emacs.c:3305
#8 0x80c2865 in signal_1 (sig=3D137250940, data=3D137250820) at eval.c=
:1885
#9 0x80c4359 in signal_quit () at eval.c:2052
#10 0x810dc50 in internal_equal (obj1=3D141542208, obj2=3D137250820, de=
pth=3D0)
at fns.c:2649
#11 0x812060d in image_instance_changed (subwindow=3D141834624) at glyp=
hs.c:4587
#12 0x815e343 in compare_runes (w=3D0x85b0c00, crb=3D0x8744100, drb=3D0=
x8730000)
at redisplay-output.c:270
#13 0x815e4aa in compare_display_blocks (w=3D0x85b0c00, cdl=3D0x8731000=
, ddl=3D0x8678000,=20
c_block=3D0, d_block=3D0, start_pixpos=3D6, cursor_start=3D0, curso=
r_width=3D0,=20
cursor_height=3D0) at redisplay-output.c:473
#14 0x815ec8b in output_display_line (w=3D0x85b0c00, cdla=3D0x8756500, =
ddla=3D0x8756520,=20
line=3D0, force_start=3D-1, force_end=3D-1) at redisplay-output.c:7=
70
#15 0x812e797 in output_gutter (f=3D0x85a1200, pos=3DBOTTOM_GUTTER, for=
ce=3D0)
at gutter.c:444
#16 0x812ebb0 in update_frame_gutters (f=3D0x85a1200) at gutter.c:634
#17 0x812f523 in Fredisplay_gutter_area () at gutter.c:1082
#18 0x80c589a in Ffuncall (nargs=3D1, args=3D0x8045af4) at eval.c:3528
#19 0x80a1c8b in execute_optimized_program (
program=3D0x8743b90 "\r=AC\004=C6 \025\n@\211\031A\036\020\b\t@a=AB=
%\t\f=A1\210\016\020\fk=AB\020=C7\016\021=C8\013#\210=C9=CA\r!!\210=AA\=
a=CB\f\013\r#\210=CC \210=AA\r\b\fB\nB\022=CB\f\013\r#\210=CD \210\013=CE=
a=AD\004=CF\b!*\207", stack_depth=3D5, constants_data=3D0x84d0e10) at b=
ytecode.c:746
#20 0x80a1997 in funcall_compiled_function (fun=3D139116348, nargs=3D4,=
args=3D0x8045c38)
at bytecode.c:515
#21 0x80c5a5b in Ffuncall (nargs=3D5, args=3D0x8045c34) at eval.c:3563
#22 0x80a1c8b in execute_optimized_program (
program=3D0x86fcb90 "\f=C5a=AB\a=C6\n\t\013#\207=C7=C8\013\"=AB\004=
\b=AB\026=C9\n\t\f=CAa=AB\004=CB=AA\a=CC\f=CD=A5=CE\"P\013#\207=CF\n\t\=
f\013$\207\026=C8o\b", stack_depth=3D6, constants_data=3D0x84d0d90)
at bytecode.c:746
#23 0x80a1997 in funcall_compiled_function (fun=3D139116432, nargs=3D3,=
args=3D0x8045d78)
at bytecode.c:515
#24 0x80c5a5b in Ffuncall (nargs=3D4, args=3D0x8045d74) at eval.c:3563
#25 0x80a1c8b in execute_optimized_program (
program=3D0x86fcbd0 "\212\013=AC\f\n=AC\t=C5=C6\t=C5\"\210=AA\017=C7=
=C8\013\n#\034=C9\t\f\b#\210\f))\207n to use to find \026=C8o\b\200=C5r=
\b", stack_depth=3D4, constants_data=3D0x84add50)
at bytecode.c:746
#26 0x80a1997 in funcall_compiled_function (fun=3D139118596, nargs=3D3,=
args=3D0x8045e20)
at bytecode.c:515
#27 0x80c51d9 in Feval (form=3D139428840) at eval.c:3388
#28 0x80cbb04 in Fwhile (args=3D139429224) at eval.c:775
#29 0x80c4e67 in Feval (form=3D139429848) at eval.c:3304
#30 0x80c58ab in Ffuncall (nargs=3D2, args=3D0x8046124) at eval.c:3528
#31 0x80a1c8b in execute_optimized_program (
program=3D0x8046180 "\f\013\np\035\031\030\036\a=C6\016\b!\026\tp\0=
26\n\rq\210,=C6\207=D0's\b=E5X\f\b=C4\e=C5\n!\211\023@\021\013A\020)=C4=
\207\b\002", stack_depth=3D4,=20
constants_data=3D0x8732750) at bytecode.c:746
#32 0x80a3b2a in Fbyte_code (instructions=3D141646996, constants=3D1417=
64416,=20
stack_depth=3D9) at bytecode.c:2403
#33 0x80c4f65 in Feval (form=3D141958756) at eval.c:3331
#34 0x80c2775 in condition_case_3 (bodyform=3D141958756, var=3D13837013=
2,=20
handlers=3D141958648) at eval.c:1651
#35 0x80a2586 in execute_rare_opcode (stack_ptr=3D0x80465dc,=20
program_ptr=3D0x87e125c "\210,=AA\005=D2\024=D3\021\n\013a=AC\b=D4=D5=
\n\"\210\n\023\016 b\210\f=AC\006=CA=D6=D7\217\210\f=AB\024\016'=AB\004=
=D8 \210\r=D9\f=DAR\211\025\tP\025=AA\f\016\037\026\"\016\036\026\037\t=
\026\036\r=DBP\025\b=AB\006\r\016(P\025=DC=DD \r\".\a\207", opcode=3D<e=
rror type>)
at bytecode.c:1271
#36 0x80a1b17 in execute_optimized_program (
program=3D0x87e1210 "=C6\211\211\211=C7\013=C8 \036 \032\035\034\03=
1\036!\036#\b=AB}=C9\b!=ACx=CA=CB=CC\217\210\f=AC3=CD\013!=AC\t=CE\021=CF=
\024p\022=AA&=C9\b\016!=C6O!=AB\031\016\036\016\037\016\"\036$\036%\036=
&\212\013q\210=CA=D0=D1\217\210,=AA\005=D2\024=D3\021\n\013a=AC\b=D4=D5=
\n\"\210\n\023\016 b\210\f=AC\006=CA=D6=D7\217\210\f=AB\024\016'=AB\004=
=D8 \210\r=D9\f=DAR\211\025\tP\025=AA\f\016\037\026\"\016\036\026\037\t=
\026\036\r=DBP\025\b=AB\006\r\016(P\025=DC=DD \r\".\a\207", stack_depth=
=3D8,=20
constants_data=3D0x87e1c10) at bytecode.c:656
#37 0x80a1997 in funcall_compiled_function (fun=3D141939588, nargs=3D1,=
args=3D0x8046728)
at bytecode.c:515
#38 0x80c5a5b in Ffuncall (nargs=3D2, args=3D0x8046724) at eval.c:3563
#39 0x80a1c8b in execute_optimized_program (
program=3D0x87e0fd0 "p=C2\031\030=C3 \210=C4\t!*\207", stack_depth=3D=
2,=20
constants_data=3D0x8732890) at bytecode.c:746
#40 0x80a1997 in funcall_compiled_function (fun=3D141939476, nargs=3D0,=
args=3D0x8046858)
at bytecode.c:515
#41 0x80c5a5b in Ffuncall (nargs=3D1, args=3D0x8046854) at eval.c:3563
#42 0x80a1c8b in execute_optimized_program (
program=3D0x87cf310 "\n=AB6\212=C4\177\210=C5=C6 `\")\211\e@=C7W=AB=
\n=C8\0138=AC\005=C9 =AA\032\t=AB\025\212=CAy\210=CB\b!)=AB\013\212=C6 =
b\210=CC=C7!\210)=CD )\207=CC \207\b\024\006J\b0\006J\bL\006J\bh\006J\b=
\204\006J\b=A0\006J\b=BC\006J\b=D8\006J\b=F4\006J\b\020\aJ\bs", stack_d=
epth=3D4,=20
constants_data=3D0x8774b90) at bytecode.c:746
#43 0x80a1997 in funcall_compiled_function (fun=3D141939420, nargs=3D0,=
args=3D0x80469c4)
at bytecode.c:515
#44 0x80c5a5b in Ffuncall (nargs=3D1, args=3D0x80469c0) at eval.c:3563
#45 0x80ca633 in apply1 (fn=3D141939420, arg=3D137250820) at eval.c:415=
2
#46 0x80a45eb in Fcall_interactively (function=3D141941340, record_flag=
=3D137250820,=20
keys=3D137250820) at callint.c:397
#47 0x80c4554 in Fcommand_execute (cmd=3D141941340, record_flag=3D13725=
0820,=20
keys=3D137250820) at eval.c:2970
#48 0x80ef36d in execute_command_event (command_builder=3D0x856e380, ev=
ent=3D142212468)
at event-stream.c:3915
#49 0x80ef9f3 in Fdispatch_event (event=3D142212468) at event-stream.c:=
4247
#50 0x80a9bf8 in Fcommand_loop_1 () at cmdloop.c:583
#51 0x80a9e59 in command_loop_1 (dummy=3D137250820) at cmdloop.c:494
#52 0x80cb1da in condition_case_1 (handlers=3D137250916,=20
bfun=3D0x80a9e40 <command_loop_1>, barg=3D137250820, hfun=3D0x80a9e=
c8 <cmd_error>,=20
harg=3D137250820) at eval.c:1651
#53 0x80a9fb7 in command_loop_2 (dummy=3D137250820) at cmdloop.c:256
#54 0x80cb0a8 in internal_catch (tag=3D137330860, func=3D0x80a9f7c <com=
mand_loop_2>,=20
arg=3D137250820, threw=3D0x0) at eval.c:1317
#55 0x80a9942 in initial_command_loop (load_me=3D137250820) at cmdloop.=
c:305
#56 0x80bf7aa in xemacs_21_4_3_i386_pc_solaris2_7 () at emacs.c:2344
#57 0x80c1329 in main () at emacs.c:2773
#58 0x80955f7 in _start ()