Subject: Re: bug#10169: a simple interrupt evokes abort?! (but only with (require 'saveplace))

From: Glenn Morris <[email-masked]>
Date: Thu, 01 Dec 2011 13:09:34 -0500

I can reproduce it on Scientific Linux 6.1, x86_64, with gcc 4.4.5
20110214 (Red Hat 4.4.5-6). Backtrace:

#0  abort () at emacs.c:386
No locals.
#1  0x00000000005f7e51 in Fsignal (error_symbol=12961906, data=19014854)
    at eval.c:1662
        conditions = 15231761
        string = 19738512
        real_error_symbol = 12961906
        clause = 12777890
        h = 0x12224b6
        bp = 0xe86b11
#2  0x00000000005f81ba in xsignal (error_symbol=12961906, data=19014854)
    at eval.c:1758
No locals.
#3  0x00000000005f8289 in xsignal3 (error_symbol=12961906, arg1=15231761, arg2=
    208, arg3=212) at eval.c:1785
No locals.
#4  0x000000000063ad86 in scan_lists (from=15231761, count=1, depth=-2, 
    sexpflag=0) at syntax.c:2607
        comstart_first = 0
        prefix = 0
        syntax = 5
        other_syntax = 0
        val = 12
        stop = 212
        c = 208
        c1 = 208
        stringterm = 34
        quoted = 112
        mathexit = 0
---Type <return> to continue, or q <return> to quit---
        code = Sclose
        temp_code = 208
        min_depth = -1
        comstyle = 0
        comnested = 0
        temp_pos = 3
        last_good = 52
        found = 0
        from_byte = 53
        out_bytepos = 140737488295520
        out_charpos = 47
        temp = 2
        dummy = 0
        multibyte_symbol_p = 0
#5  0x000000000063e831 in Fscan_lists (from=12, count=4, depth=-4)
    at syntax.c:2865
No locals.
#6  0x00000000005fad2a in Ffuncall (nargs=4, args=0x7fffffff19b0)
    at eval.c:2981
        fun = 12160837
        original_fun = 12963634
        funcar = 4
        numargs = 3
        lisp_numargs = 13226320
        val = 12777890
        backtrace = {
          next = 0x7fffffff1e00, 
          function = 0x7fffffff19b0, 
          args = 0x7fffffff19b8, 
---Type <return> to continue, or q <return> to quit---
          nargs = 3, 
          debug_on_exit = 0
        }
        internal_args = 0x7fffffff19b8
        i = 140737488296352
#7  0x0000000000647ae4 in exec_byte_code (bytestr=10875017, vector=10875053, 
    maxdepth=20, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 14
        op = 3
        vectorp = 0xa5f0b8
        stack = {
          pc = 0xb21096 "\206$", 
          byte_string = 10875017, 
          byte_string_start = 0xb21078 "\b\204\006", 
          constants = 10875053, 
          next = 0x7fffffff1ef0
        }
        top = 0x7fffffff19b0
        result = 12777890
#8  0x00000000005fb742 in funcall_lambda (fun=10874957, nargs=1, arg_vector=
    0xa5f0ad) at eval.c:3205
        val = 12777890
        syms_left = 12777890
        next = 13184898
        lexenv = 12777890
        count = 13
        i = 1
        optional = 1
        rest = 0
---Type <return> to continue, or q <return> to quit---
#9  0x00000000005faee6 in Ffuncall (nargs=2, args=0x7fffffff1e98)
    at eval.c:3023
        fun = 10874957
        original_fun = 13178802
        funcar = 1
        numargs = 1
        lisp_numargs = 4294967295
        val = 12777890
        backtrace = {
          next = 0x7fffffff2330, 
          function = 0x7fffffff1e98, 
          args = 0x7fffffff1ea0, 
          nargs = 1, 
          debug_on_exit = 0
        }
        internal_args = 0xfec0f5
        i = 140737488297424
#10 0x0000000000647ae4 in exec_byte_code (bytestr=17578657, vector=16695541, 
    maxdepth=12, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 13
        op = 1
        vectorp = 0xfec100
        stack = {
          pc = 0x12d1f04 "\210\207", 
          byte_string = 17578657, 
          byte_string_start = 0x12d1f00 "ÀÁÂ!\210\207", 
          constants = 16695541, 
          next = 0x7fffffff25d0
        }
---Type <return> to continue, or q <return> to quit---
        top = 0x7fffffff1e98
        result = 12777938
#11 0x0000000000646f63 in Fbyte_code (bytestr=17578657, vector=16695541, 
    maxdepth=12) at bytecode.c:423
No locals.
#12 0x00000000005f9670 in eval_sub (form=18964262) at eval.c:2328
        numargs = 12
        args_left = 12777890
        i = 6582052
        maxargs = 3
        argvals =           {17578657,
          16695541,
          12,
          44,
          0,
          6266547,
          140737488298864,
          1}
        fun = 12161029
        val = 3
        original_fun = 12917730
        original_args = 18964278
        funcar = 3
        backtrace = {
          next = 0x7fffffff29b0, 
          function = 0x7fffffff2360, 
          args = 0x7fffffff2290, 
          nargs = 3, 
          debug_on_exit = 0
---Type <return> to continue, or q <return> to quit---
        }
        gcpro1 = {
          next = 0xd, 
          var = 0xe86ab1, 
          nvars = 140737488299072
        }
        gcpro2 = {
          next = 0x7fffffff2440, 
          var = 0x600bc1, 
          nvars = 48
        }
        gcpro3 = {
          next = 0xd, 
          var = 0x7fffffff2290, 
          nvars = 3
        }
#13 0x00000000005f77c2 in internal_lisp_condition_case (var=16146594, bodyform=
    18964262, handlers=18964358) at eval.c:1453
        val = 12777890
        c = {
          tag = 12777890, 
          val = 12777890, 
          next = 0x7fffffff52f0, 
          gcpro = 0x0, 
          jmp =             {{
              __jmpbuf =                 {448,
                -8826069716758269337,
                0,
                140737488312912,
---Type <return> to continue, or q <return> to quit---
                0,
                0,
                -8826069716840058265,
                8826069120708014695}, 
              __mask_was_saved = 0, 
              __saved_mask = {
                __val =                   {12777890,
                  12777890,
                  5853900,
                  140737488299360,
                  6274425,
                  12777890,
                  55851513923,
                  12777890,
                  19014806,
                  6190615,
                  0,
                  2,
                  2,
                  15226369,
                  15226368,
                  15226368}
              }
            }}, 
          backlist = 0x7fffffff29b0, 
          handlerlist = 0x7fffffff52c0, 
          lisp_eval_depth = 5, 
          pdlcount = 13, 
          poll_suppress_count = 1, 
---Type <return> to continue, or q <return> to quit---
          interrupt_input_blocked = 0, 
          byte_stack = 0x7fffffff25d0
        }
        h = {
          handler = 18964358, 
          var = 16146594, 
          chosen_clause = 140737488299200, 
          tag = 0x7fffffff2440, 
          next = 0x7fffffff52c0
        }
#14 0x0000000000648862 in exec_byte_code (bytestr=17578561, vector=16797397, 
    maxdepth=12, args_template=12777890, nargs=0, args=0x0) at bytecode.c:981
        handlers = 18964358
        body = 18964262
        count = 13
        op = 143
        vectorp = 0x1004ee0
        stack = {
          pc = 0x12d1e7b "\203\061", 
          byte_string = 17578561, 
          byte_string_start = 0x12d1e70 "eb\210m\204X", 
          constants = 16797397, 
          next = 0x7fffffff2aa0
        }
        top = 0x7fffffff2570
        result = 18960278
#15 0x00000000005fb742 in funcall_lambda (fun=16797749, nargs=0, arg_vector=
    0x1004ed5) at eval.c:3205
        val = 12777890
---Type <return> to continue, or q <return> to quit---
        syms_left = 12777890
        next = 480
        lexenv = 12777890
        count = 13
        i = 0
        optional = 0
        rest = 0
#16 0x00000000005faee6 in Ffuncall (nargs=1, args=0x7fffffff2a40)
    at eval.c:3023
        fun = 16797749
        original_fun = 14562050
        funcar = 12777938
        numargs = 0
        lisp_numargs = 12897104
        val = 12777890
        backtrace = {
          next = 0x7fffffff2e80, 
          function = 0x7fffffff2a40, 
          args = 0x7fffffff2a48, 
          nargs = 0, 
          debug_on_exit = 0
        }
        internal_args = 0x1e0
        i = 140737488300592
#17 0x0000000000647ae4 in exec_byte_code (bytestr=17581121, vector=18085877, 
    maxdepth=12, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 11
        op = 0
        vectorp = 0x113f800
---Type <return> to continue, or q <return> to quit---
        stack = {
          pc = 0x12d1c74 "\210Î *\207", 
          byte_string = 17581121, 
          byte_string_start = 
    0x12d1c58 "rÅÆ!q\210Ç\216ÈÉ!\210Ê\b!\210\tË\032\033Ì\fp\"\210*Í \210Î *\207", 
          constants = 18085877, 
          next = 0x7fffffff2f70
        }
        top = 0x7fffffff2a40
        result = 13489890
#18 0x00000000005fb742 in funcall_lambda (fun=17184725, nargs=1, arg_vector=
    0x113f7f5) at eval.c:3205
        val = 42962450898
        syms_left = 12777890
        next = 13006258
        lexenv = 12777890
        count = 10
        i = 1
        optional = 0
        rest = 0
#19 0x00000000005faee6 in Ffuncall (nargs=2, args=0x7fffffff2f18)
    at eval.c:3023
        fun = 17184725
        original_fun = 14562002
        funcar = 12777890
        numargs = 1
        lisp_numargs = 1
        val = 0
---Type <return> to continue, or q <return> to quit---
        backtrace = {
          next = 0x7fffffff3350, 
          function = 0x7fffffff2f18, 
          args = 0x7fffffff2f20, 
          nargs = 1, 
          debug_on_exit = 0
        }
        internal_args = 0x10050b5
        i = 140737488301840
#20 0x0000000000647ae4 in exec_byte_code (bytestr=16796577, vector=16797877, 
    maxdepth=12, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 10
        op = 1
        vectorp = 0x10050c0
        stack = {
          pc = 0x12d2084 "\t\206\t", 
          byte_string = 16796577, 
          byte_string_start = 0x12d2080 "ÃÄ\b!\t\206\t", 
          constants = 16797877, 
          next = 0x7fffffff3440
        }
        top = 0x7fffffff2f18
        result = 6267955
#21 0x00000000005fb742 in funcall_lambda (fun=18065669, nargs=2, arg_vector=
    0x10050b5) at eval.c:3205
        val = 0
        syms_left = 12777890
        next = 16146642
        lexenv = 12777890
---Type <return> to continue, or q <return> to quit---
        count = 8
        i = 2
        optional = 1
        rest = 0
#22 0x00000000005faee6 in Ffuncall (nargs=3, args=0x7fffffff33e0)
    at eval.c:3023
        fun = 18065669
        original_fun = 14562098
        funcar = 12898242
        numargs = 2
        lisp_numargs = 12897008
        val = 14176790
        backtrace = {
          next = 0x7fffffff3820, 
          function = 0x7fffffff33e0, 
          args = 0x7fffffff33e8, 
          nargs = 2, 
          debug_on_exit = 0
        }
        internal_args = 0x10337c5
        i = 140737488303056
#23 0x0000000000647ae4 in exec_byte_code (bytestr=17434609, vector=16988101, 
    maxdepth=16, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 3
        op = 2
        vectorp = 0x10337d0
        stack = {
          pc = 0x1029aab "\210*\016\030\204\066", 
          byte_string = 17434609, 
---Type <return> to continue, or q <return> to quit---
          byte_string_start = 
    0x1029a80 "Æ\b!Ç\031\032rÈÉ!q\210ed|\210\v\203\027", 
          constants = 16988101, 
          next = 0x7fffffff3900
        }
        top = 0x7fffffff33e0
        result = 12777890
#24 0x00000000005fb742 in funcall_lambda (fun=14360165, nargs=0, arg_vector=
    0x10337c5) at eval.c:3205
        val = 12777890
        syms_left = 12777890
        next = 19269826
        lexenv = 12777890
        count = 3
        i = 0
        optional = 0
        rest = 0
#25 0x00000000005faee6 in Ffuncall (nargs=1, args=0x7fffffff38b0)
    at eval.c:3023
        fun = 14360165
        original_fun = 16146258
        funcar = 10783013
        numargs = 0
        lisp_numargs = 12026631
        val = 12777890
        backtrace = {
          next = 0x7fffffff3ce0, 
          function = 0x7fffffff38b0, 
          args = 0x7fffffff38b8, 
---Type <return> to continue, or q <return> to quit---
          nargs = 0, 
          debug_on_exit = 0
        }
        internal_args = 0x102daf5
        i = 12026624
#26 0x0000000000647ae4 in exec_byte_code (bytestr=16765873, vector=16964341, 
    maxdepth=4, args_template=12777890, nargs=0, args=0x0) at bytecode.c:785
        count = 3
        op = 0
        vectorp = 0x102db00
        stack = {
          pc = 0x102a319 "\207", 
          byte_string = 16765873, 
          byte_string_start = 0x102a310 "Á \210\b\205\t", 
          constants = 16964341, 
          next = 0x0
        }
        top = 0x7fffffff38b0
        result = 12777938
#27 0x00000000005fb742 in funcall_lambda (fun=16693349, nargs=0, arg_vector=
    0x102daf5) at eval.c:3205
        val = 140737488305640
        syms_left = 12777890
        next = 140737340148088
        lexenv = 12777890
        count = 3
        i = 0
        optional = 0
        rest = 0
---Type <return> to continue, or q <return> to quit---
#28 0x00000000005faee6 in Ffuncall (nargs=1, args=0x7fffffff3e50)
    at eval.c:3023
        fun = 16693349
        original_fun = 16146450
        funcar = 0
        numargs = 0
        lisp_numargs = 12777890
        val = 20
        backtrace = {
          next = 0x0, 
          function = 0x7fffffff3e50, 
          args = 0x7fffffff3e58, 
          nargs = 0, 
          debug_on_exit = 0
        }
        internal_args = 0x7ffff70a09a0
        i = 10784509
#29 0x00000000005f9ed6 in funcall_nil (nargs=1, args=0x7fffffff3e50)
    at eval.c:2491
No locals.
#30 0x00000000005fa2e7 in run_hook_with_args (nargs=1, args=0x7fffffff3e50, 
    funcall=0x5f9eb3 <funcall_nil>) at eval.c:2680
        global_vals = 12777890
        sym = 12940338
        val = 13947622
        ret = 12777890
        gcpro1 = {
          next = 0x126c852, 
          var = 0x7ffff70a09a0, 
---Type <return> to continue, or q <return> to quit---
          nvars = 7032063
        }
        gcpro2 = {
          next = 0xf, 
          var = 0xc2c9e5, 
          nvars = 820
        }
        gcpro3 = {
          next = 0x7fffffff3e10, 
          var = 0x62aeb8, 
          nvars = 0
        }
#31 0x00000000005f9f22 in Frun_hooks (nargs=1, args=0x7fffffff3e88)
    at eval.c:2518
        hook =           {16146450}
        i = 0
#32 0x00000000005573f1 in Fkill_emacs (arg=12777890) at emacs.c:2005
        gcpro1 = {
          next = 0xa48fd6, 
          var = 0x6b6f2d, 
          nvars = 4294917824
        }
        hook = 12940338
        exit_code = 0
#33 0x000000000056d52a in interrupt_signal (signalnum=2) at keyboard.c:10862
        old_errno = 11
        terminal = 0x0
#34 <signal handler called>
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#35 0x000000366b8de363 in __select_nocancel () from /lib64/libc.so.6
No symbol table info available.
#36 0x0000000000652a14 in select_wrapper (n=8, rfd=0x7fffffff4660, wfd=
    0x7fffffff45e0, xfd=0x0, tmo=0x7fffffff45c0) at process.c:4245
No locals.
#37 0x0000000000653b1e in wait_reading_process_output (time_limit=0, microsecs=
    0, read_kbd=-1, do_display=1, wait_for_cell=12777890, wait_proc=0x0, 
    just_wait_proc=0) at process.c:4611
        timeout_reduced_for_timers = 1
        channel = -47520
        nfds = 0
        Available = {
          fds_bits =             {128,
            0 <repeats 15 times>}
        }
        Writeok = {
          fds_bits =             {0 <repeats 16 times>}
        }
        check_write = 1
        check_delay = 0
        no_avail = 0
        xerrno = 11
        proc = 0
        timeout = {
          tv_sec = 0, 
          tv_usec = 473112
        }
        end_time = {
          tv_sec = 0, 
---Type <return> to continue, or q <return> to quit---
          tv_usec = 0
        }
        wait_channel = -1
        got_some_input = 1
        count = 2
#38 0x000000000055eac0 in kbd_buffer_get_event (kbp=0x7fffffff4990, 
    used_mouse_menu=0x7fffffff4ec4, end_time=0x0) at keyboard.c:3850
        c = 2
        obj = 4294967296
#39 0x000000000055c67b in read_char (commandflag=1, nmaps=2, maps=
    0x7fffffff4ce0, prev_event=12777890, used_mouse_menu=0x7fffffff4ec4, 
    end_time=0x0) at keyboard.c:2796
        kb = 0x0
        c = 12777890
        jmpcount = 2
        local_getcjmp =           {{
            __jmpbuf =               {2,
              -8826069719702670745,
              4261152,
              140737488312912,
              0,
              0,
              -8826069719851568537,
              8826069075804582503}, 
            __mask_was_saved = 0, 
            __saved_mask = {
              __val =                 {66,
                18446744073709551615,
                4294967294,
---Type <return> to continue, or q <return> to quit---
                0,
                0,
                0,
                0,
                0,
                0,
                46,
                0,
                12777890,
                12777890,
                12777890,
                12777890,
                12777890}
            }
          }}
        save_jump =           {{
            __jmpbuf =               {0,
              0,
              0,
              0,
              0,
              0,
              0,
              0}, 
            __mask_was_saved = 0, 
            __saved_mask = {
              __val =                 {0 <repeats 16 times>}
            }
          }}
---Type <return> to continue, or q <return> to quit---
        key_already_recorded = 0
        tem = 12811970
        save = 140737488309296
        previous_echo_area_message = 12777890
        also_record = 12777890
        reread = 0
        gcpro1 = {
          next = 0x7fffffff4bf0, 
          var = 0x7fffffff4bf8, 
          nvars = 140737488308752
        }
        gcpro2 = {
          next = 0x0, 
          var = 0x7fffffff4a18, 
          nvars = 12777890
        }
        polling_stopped_here = 1
        orig_kboard = 0x12b0150
#40 0x0000000000569c32 in read_key_sequence (keybuf=0x7fffffff5130, bufsize=
    30, prompt=12777890, dont_downcase_last=0, can_return_switch_frame=1, 
    fix_current_buffer=1) at keyboard.c:9290
        interrupted_kboard = 0x12b0150
        interrupted_frame = 0xff3700
        key = 16908133
        used_mouse_menu = 0
        echo_local_start = 0
        last_real_key_start = 0
        keys_local_start = 0
        local_first_binding = 1
---Type <return> to continue, or q <return> to quit---
        from_string = 12777890
        count = 2
        t = 0
        echo_start = 0
        keys_start = 0
        nmaps = 2
        nmaps_allocated = 2
        defs = 0x7fffffff4cc0
        submaps = 0x7fffffff4ce0
        orig_local_map = 12777890
        orig_keymap = 12777890
        localized_local_map = 0
        first_binding = 1
        first_unbound = 31
        mock_input = 0
        fkey = {
          parent = 18294934, 
          map = 18294934, 
          start = 0, 
          end = 0
        }
        keytran = {
          parent = 12757414, 
          map = 12757414, 
          start = 0, 
          end = 0
        }
        indec = {
          parent = 18294950, 
---Type <return> to continue, or q <return> to quit---
          map = 18294950, 
          start = 0, 
          end = 0
        }
        shift_translated = 0
        delayed_switch_frame = 12777890
        original_uppercase = 12777938
        original_uppercase_position = -1
        dummyflag = 0
        starting_buffer = 0xf5f2e0
        fake_prefixed_keys = 12777890
        gcpro1 = {
          next = 0x7fffffff4f00, 
          var = 0x5ddf17, 
          nvars = 0
        }
#41 0x00000000005599d2 in command_loop_1 () at keyboard.c:1447
        cmd = 12899282
        keybuf =           {4261152,
          140737488312912,
          140737488310640,
          6152116,
          2822930839,
          12777890,
          0,
          5,
          140737488310720,
          6154447,
          12777890,
---Type <return> to continue, or q <return> to quit---
          12899282,
          140737488310800,
          12899280,
          7,
          12627840,
          0,
          140737488310752,
          140737488310880,
          6274735,
          13356918,
          8602712482,
          12899282,
          12777890,
          0,
          0,
          4261152,
          140737488312912,
          140737488310880,
          6274155}
        i = 12899280
        prev_modiff = 0
        prev_buffer = 0x0
        already_adjusted = 0
#42 0x00000000005f792a in internal_condition_case (bfun=
    0x5595e9 <command_loop_1>, handlers=12830082, hfun=0x558ed8 <cmd_error>)
    at eval.c:1499
        val = 0
        c = {
          tag = 12777890, 
---Type <return> to continue, or q <return> to quit---
          val = 12777890, 
          next = 0x7fffffff5470, 
          gcpro = 0x0, 
          jmp =             {{
              __jmpbuf =                 {5,
                -8826069720493297049,
                4261152,
                140737488312912,
                0,
                0,
                -8826069720575085977,
                8826069120765948519}, 
              __mask_was_saved = 0, 
              __saved_mask = {
                __val =                   {8826069120765948519,
                  0,
                  4294967295,
                  13307238,
                  1,
                  9389376,
                  0,
                  0,
                  0,
                  0,
                  233723453152,
                  1,
                  0,
                  16110896,
                  233731823104,
---Type <return> to continue, or q <return> to quit---
                  16110896}
              }
            }}, 
          backlist = 0x0, 
          handlerlist = 0x0, 
          lisp_eval_depth = 0, 
          pdlcount = 2, 
          poll_suppress_count = 1, 
          interrupt_input_blocked = 0, 
          byte_stack = 0x0
        }
        h = {
          handler = 12830082, 
          var = 12777890, 
          chosen_clause = 12830082, 
          tag = 0x7fffffff52f0, 
          next = 0x0
        }
#43 0x00000000005592d8 in command_loop_2 (ignore=12777890) at keyboard.c:1158
        val = 5
#44 0x00000000005f72b4 in internal_catch (tag=12825874, func=
    0x5592b2 <command_loop_2>, arg=12777890) at eval.c:1256
        c = {
          tag = 12825874, 
          val = 12777890, 
          next = 0x0, 
          gcpro = 0x0, 
          jmp =             {{
              __jmpbuf =                 {5,
---Type <return> to continue, or q <return> to quit---
                -8826069720545725849,
                4261152,
                140737488312912,
                0,
                0,
                -8826069720484908441,
                8826069120562786919}, 
              __mask_was_saved = 0, 
              __saved_mask = {
                __val =                   {6153416,
                  0,
                  4301645564,
                  0,
                  12777890,
                  13003840,
                  140737488311736,
                  14,
                  12805936,
                  12183296,
                  6151995,
                  140737488311696,
                  12777890,
                  4261152,
                  140737488312912,
                  140737488311712}
              }
            }}, 
          backlist = 0x0, 
          handlerlist = 0x0, 
---Type <return> to continue, or q <return> to quit---
          lisp_eval_depth = 0, 
          pdlcount = 2, 
          poll_suppress_count = 1, 
          interrupt_input_blocked = 0, 
          byte_stack = 0x0
        }
#45 0x000000000055928b in command_loop () at keyboard.c:1137
No locals.
#46 0x0000000000558a1c in recursive_edit_1 () at keyboard.c:757
        count = 1
        val = 5606357
#47 0x0000000000558bbf in Frecursive_edit () at keyboard.c:821
        count = 0
        buffer = 12777890
#48 0x0000000000556d37 in main (argc=5, argv=0x7fffffff5a58) at emacs.c:1707
        dummy = 233731852096
        stack_bottom_variable = 0 '\000'
        do_initial_setlocale = 1
        skip_args = 0
        rlim = {
          rlim_cur = 33554432, 
          rlim_max = 18446744073709551615
        }
        no_loadup = 0
        junk = 0x0
        dname_arg = 0x0
        ch_to_dir = 0x7ffff7526cf0 "@\024\"k6"

Lisp Backtrace:
  "scan-lists" (0xffff19b8)
  "down-list" (0xffff1ea0)
  "byte-code" (0xffff2290)
  "pp-buffer" (0xffff2a48)
  "pp-to-string" (0xffff2f20)
  "pp" (0xffff33e8)
  "save-place-alist-to-file" (0xffff38b8)
  "save-place-kill-emacs-hook" (0xffff3e58)