GNU bug report logs - #37836
27.0.50; Snake exit not save produces segfault

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From: Ergus <spacibba <at> aol.com>
To: 37836 <at> debbugs.gnu.org
Subject: bug#37836: 27.0.50; Snake exit not save produces segfault
Date: Sun, 20 Oct 2019 21:54:48 +0200

I was playing snake and when the game ended it asked to create a
directory. I replied no and a segfault was produced and closed emacs.

The bt in the core file was this:

#0  0x00005600e3fff6f3 in SYMBOL_NAME (sym=<optimized out>) at ../../src/lisp.h:1005
#1  0x00005600e3fff6f3 in oblookup (obarray=<optimized out>, ptr=0x5600e407d751 "auto-save-hook", size=14, size_byte=14) at ../../src/lread.c:4353
#2  0x00005600e3fff78a in intern_1 (str=str <at> entry=0x5600e407d751 "auto-save-hook", len=len <at> entry=14) at ../../src/lread.c:4162
#3  0x00005600e3f9b402 in intern (str=0x5600e407d751 "auto-save-hook") at ../../src/lisp.h:4107
#4  0x00005600e3f9b402 in Fdo_auto_save (no_message=<optimized out>, no_message <at> entry=0x30, current_only=current_only <at> entry=0x0) at ../../src/fileio.c:5830
#5  0x00005600e3f658a1 in shut_down_emacs (sig=sig <at> entry=11, stuff=stuff <at> entry=0x0) at ../../src/lisp.h:1032
#6  0x00005600e3e85c81 in terminate_due_to_signal (sig=sig <at> entry=11, backtrace_limit=backtrace_limit <at> entry=40) at ../../src/lisp.h:1032
#7  0x00005600e3e86105 in handle_fatal_signal (sig=sig <at> entry=11) at ../../src/sysdep.c:1790
#8  0x00005600e3f7d7cd in deliver_thread_signal (sig=sig <at> entry=11, handler=0x5600e3e860fa <handle_fatal_signal>) at ../../src/sysdep.c:1764
#9  0x00005600e3f7d849 in deliver_fatal_thread_signal (sig=11) at ../../src/sysdep.c:1887
#10 0x00005600e3f7d849 in handle_sigsegv (sig=11, siginfo=<optimized out>, arg=<optimized out>) at ../../src/sysdep.c:1887
#11 0x00007f849095c930 in <signal handler called> () at /usr/lib/libpthread.so.0
#12 0x00007f8490731a61 in __memmove_avx_unaligned_erms () at /usr/lib/libc.so.6
#13 0x00005600e3fbd058 in memcpy (__len=18446744073709551600, __src=0x5600e6e64528, __dest=<optimized out>) at /usr/include/bits/string_fortified.h:34
#14 0x00005600e3fbd058 in Fvector (nargs=-2, args=0x5600e6e64528) at ../../src/alloc.c:3308
#15 0x00005600e3fdbff3 in Ffuncall (nargs=1, args=args <at> entry=0x7ffd27382aa8) at ../../src/lisp.h:2109
#16 0x00005600e4011448 in exec_byte_code
   (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized out>)
   at ../../src/bytecode.c:633
#17 0x00005600e3fdbf57 in Ffuncall (nargs=1, args=args <at> entry=0x7ffd27382e18) at ../../src/eval.c:2808
#18 0x00005600e4011448 in exec_byte_code
   (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized out>)
   at ../../src/bytecode.c:633
#19 0x00005600e3fdbf57 in Ffuncall (nargs=1, args=0x7ffd27383338) at ../../src/eval.c:2808
#20 0x00005600e3fdc36c in Fapply (nargs=2, args=0x7ffd27383338) at ../../src/eval.c:2377
#21 0x00005600e3fdbff3 in Ffuncall (nargs=3, args=args <at> entry=0x7ffd27383330) at ../../src/lisp.h:2109
#22 0x00005600e4011448 in exec_byte_code
   (bytestr=<optimized out>, vector=<optimized out>, maxdepth=<optimized out>, args_template=<optimized out>, nargs=<optimized out>, args=<optimized out>)
   at ../../src/bytecode.c:633
#23 0x00005600e3fdbf57 in Ffuncall (nargs=2, args=0x7ffd273836e0) at ../../src/eval.c:2808
#24 0x00005600e3fdc0aa in call1 (fn=fn <at> entry=0xd1d0, arg1=arg1 <at> entry=0x5600e65a1db5) at ../../src/eval.c:2654
#25 0x00005600e3f6bc2a in timer_check_2 (idle_timers=<optimized out>, timers=<optimized out>) at ../../src/lisp.h:1032
#26 0x00005600e3f6bc2a in timer_check () at ../../src/keyboard.c:4367
#27 0x00005600e3f6bef5 in readable_events (flags=flags <at> entry=1) at ../../src/keyboard.c:3366
#28 0x00005600e3f6c948 in get_input_pending (flags=flags <at> entry=1) at ../../src/keyboard.c:6786
#29 0x00005600e3f6f7c8 in detect_input_pending_run_timers (do_display=do_display <at> entry=true) at ../../src/keyboard.c:10332
#30 0x00005600e401b954 in wait_reading_process_output
   (time_limit=time_limit <at> entry=30, nsecs=nsecs <at> entry=0, read_kbd=read_kbd <at> entry=-1, do_display=do_display <at> entry=true, wait_for_cell=wait_for_cell <at> entry=0x0, wait_proc=w
ait_proc <at> entry=0x0, just_wait_proc=0) at ../../src/process.c:5655
#31 0x00005600e3e9654f in sit_for (timeout=timeout <at> entry=0x7a, reading=reading <at> entry=true, display_option=display_option <at> entry=1) at ../../src/lisp.h:1032
#32 0x00005600e3f7243a in read_char (commandflag=1, map=0x5600e717afd3, prev_event=0x0, used_mouse_menu=0x7ffd273842cb, end_time=0x0) at ../../src/lisp.h:1147
--Type <RET> for more, q to quit, c to continue without paging--
#33 0x00005600e3f7297a in read_key_sequence
   (keybuf=<optimized out>, prompt=0x0, dont_downcase_last=<optimized out>, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=<optimized out>)
   at ../../src/keyboard.c:9527
#34 0x00005600e3f7401c in command_loop_1 () at ../../src/lisp.h:1032
#35 0x00005600e3fdb287 in internal_condition_case
   (bfun=bfun <at> entry=0x5600e3f73e20 <command_loop_1>, handlers=handlers <at> entry=0x90, hfun=hfun <at> entry=0x5600e3f6afb0 <cmd_error>) at ../../src/eval.c:1355
#36 0x00005600e3f65d14 in command_loop_2 (ignore=ignore <at> entry=0x0) at ../../src/lisp.h:1032
#37 0x00005600e3fdb1e1 in internal_catch (tag=tag <at> entry=0xd4a0, func=func <at> entry=0x5600e3f65cf0 <command_loop_2>, arg=arg <at> entry=0x0) at ../../src/eval.c:1116
#38 0x00005600e3f65cbb in command_loop () at ../../src/lisp.h:1032
#39 0x00005600e3f6abc6 in recursive_edit_1 () at ../../src/keyboard.c:714
#40 0x00005600e3f6aef2 in Frecursive_edit () at ../../src/keyboard.c:786
#41 0x00005600e3e8c967 in main (argc=2, argv=<optimized out>) at ../../src/emacs.c:2055


In GNU Emacs 27.0.50 (build 3, x86_64-pc-linux-gnu, GTK+ Version 3.24.12)
of 2019-10-20 built on Ergus
Repository revision: c2cd27bceb574b749a3de0629d915cb8afb4378e
Repository branch: master
System Description: Arch Linux

Recent messages:
Loading /home/ergo/.emacs.d/custom.el (source)...done
Starting new Ispell process /usr/bin/aspell with default dictionary...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Load time 0.807473
funcall-interactively: End of buffer

Configured using:
'configure --prefix=/mnt/casa/install_arch/emacs --with-x-toolkit=gtk3
--with-xft --with-modules --with-mailutils'

Configured features:
XPM JPEG TIFF GIF PNG RSVG SOUND GPM DBUS GSETTINGS GLIB NOTIFY INOTIFY
ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE HARFBUZZ M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11 XDBE XIM MODULES THREADS LIBSYSTEMD JSON
PDUMPER LCMS2 GMP

Important settings:
 value of $LANG: en_US.UTF-8
 locale-coding-system: utf-8-unix

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