bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs

[Michael Welsh Duggan]

martin rudalics <rudalics@gmx.at> writes:

>  > b->window_count is 1.
>
> What else should I have expected?  I attach yet another diff.  When the
> same assertion triggers we'll at least know which buffer got killed.
>
> martin
>

Okay.  I got a nice trigger from this.  I've added some extra
debugging info after the backtrace.

#0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647)
    at ../../master/src/emacs.c:379
#1  0x00005555557c48ef in die
    (msg=0x55555590f830 "count == replace_buffer_in_windows_safely_count", 
file=0x55555590e9cf "../../master/src/window.c", line=3450)
    at ../../master/src/alloc.c:7420
#2  0x000055555564d93a in replace_buffer_in_windows_safely
    (buffer=XIL(0x5555578531b5)) at ../../master/src/window.c:3450
        count = 1
#3  0x0000555555758e1a in Fkill_buffer (buffer_or_name=XIL(0x5555578531b5))
    at ../../master/src/buffer.c:1880
        buffer = XIL(0x5555578531b5)
        b = 0x5555578531b0
        tem = XIL(0)
        m = 0x7fffffffcbc0
#4  0x00005555557fd918 in funcall_subr
    (subr=0x555555dd8ce0 <Skill_buffer>, numargs=1, args=0x7fffffffcce8)
    at ../../master/src/eval.c:2987
        internal_argbuf = 
          {XIL(0x7fffffffcc20), XIL(0x1000000000), XIL(0x555555dd8ce0), 
XIL(0x7fffffffcc28), XIL(0x5555557f455b), make_fixnum(17538469896), 
XIL(0x555555dd8ce5), XIL(0x7fffffffcc40)}
        internal_args = 0x7fffffffcce8
#5  0x00005555557fd3e0 in Ffuncall (nargs=2, args=0x7fffffffcce0)
    at ../../master/src/eval.c:2914
        fun = XIL(0x555555dd8ce5)
        original_fun = XIL(0x2aaa9c7157c0)
        funcar = XIL(0x5ffffcca0)
        numargs = 1
        val = XIL(0x7fffffffccc0)
        count = 10
#6  0x0000555555856aa3 in exec_byte_code
    (bytestr=XIL(0x5555576cf5b4), vector=XIL(0x5555576e7d15), 
maxdepth=make_fixnum(5), args_template=make_fixnum(0), nargs=0, 
args=0x7fffffffd390)
    at ../../master/src/bytecode.c:632
        op = 1
        type = (CATCHER_ALL | unknown: 0x557d70b4)
        targets = 
          {0x555555859938 <exec_byte_code+15219>, 0x55555585995d 
<exec_byte_code+15256>, 0x55555585995f <exec_byte_code+15258>, 0x555555859961 
<exec_byte_code+15260>, 0x555555859963 <exec_byte_code+15262>, 0x555555859963 
<exec_byte_code+15262>, 0x5555558599c8 <exec_byte_code+15363>, 0x555555859a3c 
<exec_byte_code+15479>, 0x555555856363 <exec_byte_code+1438>, 0x555555856365 
<exec_byte_code+1440>, 0x555555856367 <exec_byte_code+1442>, 0x555555856369 
<exec_byte_code+1444>, 0x55555585636b <exec_byte_code+1446>, 0x55555585636b 
<exec_byte_code+1446>, 0x555555856371 <exec_byte_code+1452>, 0x555555856332 
<exec_byte_code+1389>, 0x555555856789 <exec_byte_code+2500>, 0x55555585678b 
<exec_byte_code+2502>, 0x55555585678d <exec_byte_code+2504>, 0x55555585678f 
<exec_byte_code+2506>, 0x555555856791 <exec_byte_code+2508>, 0x555555856791 
<exec_byte_code+2508>, 0x5555558567c6 <exec_byte_code+2561>, 0x555555856797 
<exec_byte_code+2514>, 0x5555558569bb <exec_byte_code+3062>, 0x5555558569bd 
<exec_byte_code+3064>, 0x5555558569bf <exec_byte_code+3066>, 0x5555558569c1 
<exec_byte_code+3068>, 0x5555558569c3 <exec_byte_code+3070>, 0x5555558569c3 
<exec_byte_code+3070>, 0x555555856975 <exec_byte_code+2992>, 0x55555585698c 
<exec_byte_code+3015>, 0x555555856a70 <exec_byte_code+3243>, 0x555555856a72 
<exec_byte_code+3245>, 0x555555856a74 <exec_byte_code+3247>, 0x555555856a76 
<exec_byte_code+3249>, 0x555555856a78 <exec_byte_code+3251>, 0x555555856a78 
<exec_byte_code+3251>, 0x555555856a2a <exec_byte_code+3173>, 0x555555856a41 
<exec_byte_code+3196>, 0x555555856b22 <exec_byte_code+3421>, 0x555555856b24 
<exec_byte_code+3423>, 0x555555856b26 <exec_byte_code+3425>, 0x555555856b28 
<exec_byte_code+3427>, 0x555555856b2a <exec_byte_code+3429>, 0x555555856b2a 
<exec_byte_code+3429>, 0x555555856adc <exec_byte_code+3351>, 0x555555856af3 
<exec_byte_code+3374>, 0x55555585738a <exec_byte_code+5573>, 0x55555585726d 
<exec_byte_code+5288>, 0x555555857264 <exec_byte_code+5279>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x5555558575c4 <exec_byte_code+6143>, 0x5555558576da 
<exec_byte_code+6421>, 0x555555857737 <exec_byte_code+6514>, 0x555555857797 
<exec_byte_code+6610>, 0x5555558577f9 <exec_byte_code+6708>, 0x5555558565e2 
<exec_byte_code+2077>, 0x55555585665d <exec_byte_code+2200>, 0x555555857872 
<exec_byte_code+6829>, 0x55555585651f <exec_byte_code+1882>, 0x5555558566c5 
<exec_byte_code+2304>, 0x5555558578da <exec_byte_code+6933>, 0x555555857942 
<exec_byte_code+7037>, 0x55555585798a <exec_byte_code+7109>, 0x5555558579f2 
<exec_byte_code+7213>, 0x555555857a58 <exec_byte_code+7315>, 0x555555857b3e 
<exec_byte_code+7545>, 0x555555857b86 <exec_byte_code+7617>, 0x555555857bee 
<exec_byte_code+7721>, 0x555555857c73 <exec_byte_code+7854>, 0x555555857cbb 
<exec_byte_code+7926>, 0x555555857d03 <exec_byte_code+7998>, 0x555555857d6b 
<exec_byte_code+8102>, 0x555555857dd3 <exec_byte_code+8206>, 0x555555857e3b 
<exec_byte_code+8310>, 0x555555857ec0 <exec_byte_code+8443>, 0x555555857f0f 
<exec_byte_code+8522>, 0x555555857f5e <exec_byte_code+8601>, 0x555555858025 
<exec_byte_code+8800>, 0x55555585811e <exec_byte_code+9049>, 0x555555858217 
<exec_byte_code+9298>, 0x555555858284 <exec_byte_code+9407>, 0x5555558582f1 
<exec_byte_code+9516>, 0x55555585835e <exec_byte_code+9625>, 0x5555558583cb 
<exec_byte_code+9734>, 0x555555858438 <exec_byte_code+9843>, 0x555555858487 
<exec_byte_code+9922>, 0x555555858581 <exec_byte_code+10172>, 0x5555558585d0 
<exec_byte_code+10251>, 0x55555585861f <exec_byte_code+10330>, 0x55555585866e 
<exec_byte_code+10409>, 0x555555858774 <exec_byte_code+10671>, 0x5555558570e4 
<exec_byte_code+4895>, 0x5555558587cf <exec_byte_code+10762>, 0x555555858817 
<exec_byte_code+10834>, 0x5555558588d9 <exec_byte_code+11028>, 0x555555858942 
<exec_byte_code+11133>, 0x55555585899d <exec_byte_code+11224>, 0x5555558589e5 
<exec_byte_code+11296>, 0x555555858a28 <exec_byte_code+11363>, 0x555555858a6b 
<exec_byte_code+11430>, 0x555555858ab6 <exec_byte_code+11505>, 0x555555859938 
<exec_byte_code+15219>, 0x555555858b0e <exec_byte_code+11593>, 0x555555858b51 
<exec_byte_code+11660>, 0x555555858b94 <exec_byte_code+11727>, 0x555555858bd7 
<exec_byte_code+11794>, 0x555555858c1a <exec_byte_code+11861>, 0x555555858c5d 
<exec_byte_code+11928>, 0x5555558570e4 <exec_byte_code+4895>, 0x555555859938 
<exec_byte_code+15219>, 0x555555858ca5 <exec_byte_code+12000>, 0x555555858cf7 
<exec_byte_code+12082>, 0x555555858d3f <exec_byte_code+12154>, 0x555555858d87 
<exec_byte_code+12226>, 0x555555858def <exec_byte_code+12330>, 0x555555858e57 
<exec_byte_code+12434>, 0x555555858e9f <exec_byte_code+12506>, 0x555555858f5c 
<exec_byte_code+12695>, 0x555555858fc4 <exec_byte_code+12799>, 0x55555585902c 
<exec_byte_code+12903>, 0x555555859094 <exec_byte_code+13007>, 0x5555558590d7 
<exec_byte_code+13074>, 0x555555859938 <exec_byte_code+15219>, 0x55555585702a 
<exec_byte_code+4709>, 0x555555856bd4 <exec_byte_code+3599>, 0x55555585648d 
<exec_byte_code+1736>, 0x555555856c85 <exec_byte_code+3776>, 0x555555856d09 
<exec_byte_code+3908>, 0x555555856d8a <exec_byte_code+4037>, 0x555555856fde 
<exec_byte_code+4633>, 0x555555856ff3 <exec_byte_code+4654>, 0x555555856922 
<exec_byte_code+2909>, 0x5555558570ad <exec_byte_code+4840>, 0x55555585711b 
<exec_byte_code+4950>, 0x5555558571ac <exec_byte_code+5095>, 0x5555558571f5 
<exec_byte_code+5168>, 0x5555558573d6 <exec_byte_code+5649>, 0x555555857453 
<exec_byte_code+5774>, 0x5555558574d8 <exec_byte_code+5907>, 0x55555585753e 
<exec_byte_code+6009>, 0x555555856b86 <exec_byte_code+3521>, 0x55555585911f 
<exec_byte_code+13146>, 0x5555558591a4 <exec_byte_code+13279>, 0x5555558591ec 
<exec_byte_code+13351>, 0x555555859234 <exec_byte_code+13423>, 0x55555585927c 
<exec_byte_code+13495>, 0x5555558592c4 <exec_byte_code+13567>, 0x55555585932c 
<exec_byte_code+13671>, 0x555555859394 <exec_byte_code+13775>, 0x5555558593fc 
<exec_byte_code+13879>, 0x555555859464 <exec_byte_code+13983>, 0x5555558595ad 
<exec_byte_code+14312>, 0x555555859615 <exec_byte_code+14416>, 0x55555585967d 
<exec_byte_code+14520>, 0x5555558596c5 <exec_byte_code+14592>, 0x55555585972d 
<exec_byte_code+14696>, 0x555555859795 <exec_byte_code+14800>, 0x5555558597dd 
<exec_byte_code+14872>, 0x555555859825 <exec_byte_code+14944>, 0x5555558586bd 
<exec_byte_code+10488>, 0x55555585870c <exec_byte_code+10567>, 0x555555859874 
<exec_byte_code+15023>, 0x5555558598d6 <exec_byte_code+15121>, 0x555555859938 
<exec_byte_code+15219>, 0x555555856e0b <exec_byte_code+4166>, 0x555555856e28 
<exec_byte_code+4195>, 0x555555856e97 <exec_byte_code+4306>, 0x555555856f06 
<exec_byte_code+4417>, 0x555555856f72 <exec_byte_code+4525>, 0x555555857ac6 
<exec_byte_code+7425>, 0x555555857fad <exec_byte_code+8680>, 0x555555858861 
<exec_byte_code+10908>, 0x555555859acf <exec_byte_code+15626>, 0x555555859b44 
<exec_byte_code+15743>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859bda <exec_byte_code+15893>, 0x555555859c61 
<exec_byte_code+16028>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859daf <exec_byte_code+16362> <repeats 64 
times>}
        const_length = 9
        bytestr_length = 40
        vectorp = 0x5555576e7d18
        quitcounter = 1 '\001'
        stack_items = 6
        sa_avail = 16296
        sa_count = 10
        alloc = 0x7fffffffccd0
        stack_base = 0x7fffffffccd0
        top = 0x7fffffffcce0
        stack_lim = 0x7fffffffcd00
        bytestr_data = 0x7fffffffcd00 "\300\301!\210p\211\211\205\026"
        pc = 0x7fffffffcd1e "\210\305 \210\210\306\307\310\"\207\242^\205UUU"
        count = 10
        result = XIL(0xe0d0)
#7  0x00005555557fdbcb in fetch_and_exec_byte_code (fun=XIL(0x5555576e7d65), 
syms_left=make_fixnum(0), nargs=0, args=0x7fffffffd390) at 
../../master/src/eval.c:3036
#8  0x00005555557fe051 in funcall_lambda (fun=XIL(0x5555576e7d65), nargs=0, 
arg_vector=0x7fffffffd390) at ../../master/src/eval.c:3117
        val = XIL(0x7fffffffd140)
        syms_left = make_fixnum(0)
        next = XIL(0x555555e62080)
        lexenv = XIL(0x1800000000)
        count = 10
        i = 93824994985307
        optional = false
        rest = false
#9  0x00005555557fd424 in Ffuncall (nargs=1, args=0x7fffffffd388) at 
../../master/src/eval.c:2916
        fun = XIL(0x5555576e7d65)
        original_fun = XIL(0x18856b0)
        funcar = XIL(0xffffd1e0)
        numargs = 0
        val = XIL(0)
        count = 9
#10 0x00005555557f1518 in Ffuncall_interactively (nargs=1, args=0x7fffffffd388) 
at ../../master/src/callint.c:260
        speccount = 8
#11 0x00005555557fd809 in funcall_subr (subr=0x555555ddeca0 
<Sfuncall_interactively>, numargs=1, args=0x7fffffffd388) at 
../../master/src/eval.c:2967
#12 0x00005555557fd3e0 in Ffuncall (nargs=2, args=0x7fffffffd380) at 
../../master/src/eval.c:2914
        fun = XIL(0x555555ddeca5)
        original_fun = XIL(0x70b0)
        funcar = XIL(0x7fffffffd2b0)
        numargs = 1
        val = XIL(0)
        count = 7
#13 0x00005555557fc0c9 in Fapply (nargs=3, args=0x7fffffffd380) at 
../../master/src/eval.c:2497
        i = 2582717749968
        funcall_nargs = 25712400
        funcall_args = 0x0
        spread_arg = XIL(0)
        fun = XIL(0x70b0)
        sa_avail = 16384
        sa_count = 7
        numargs = 0
        retval = XIL(0x5555557f0258)
#14 0x00005555557f198d in Fcall_interactively (function=XIL(0x18856b0), 
record_flag=XIL(0), keys=XIL(0x5555582113c5)) at ../../master/src/callint.c:353
        funval = XIL(0x5555576e7d65)
        events = 1433
        input = XIL(0)
        speccount = 6
        arg_from_tty = false
        key_count = 1
        record_then_fail = false
        save_this_command = XIL(0x18856b0)
        save_this_original_command = XIL(0x18856b0)
        save_real_this_command = XIL(0x18856b0)
        save_last_command = XIL(0x1885710)
        prefix_arg = XIL(0)
        enable = XIL(0)
        up_event = XIL(0)
        form = XIL(0x555558b00b03)
        specs = XIL(0)
        sa_avail = 93825001726080
        sa_count = 93824995577276
        string_len = 93824993913254
        string = 0x5555576e7d65 ""
        string_end = 0x7fffffffd4e0 ""
        next_event = 93824994845356
        nargs = 0
        args = 0x0
        visargs = 0x0
        varies = 0x555555e62080 <lispsym> "\230\001"
        tem = 0x7fffffffd570 "e}nWUU"
        val = XIL(0)
#15 0x00005555557fd972 in funcall_subr (subr=0x555555ddece0 
<Scall_interactively>, numargs=3, args=0x7fffffffd720) at 
../../master/src/eval.c:2992
        internal_argbuf = {XIL(0x7fffffffd630), XIL(0x1000000000), 
XIL(0x555555ddece0), XIL(0x7fffffffd638), XIL(0x5555557f455b), 
make_fixnum(17538469896), XIL(0x555555ddece5), XIL(0x7fffffffd650)}
        internal_args = 0x7fffffffd720
#16 0x00005555557fd3e0 in Ffuncall (nargs=4, args=0x7fffffffd718) at 
../../master/src/eval.c:2914
        fun = XIL(0x555555ddece5)
        original_fun = XIL(0x2aaa9c71a1d0)
        funcar = XIL(0x7fffffffd6b0)
        numargs = 3
        val = XIL(0x7fffffffd6d0)
        count = 5
#17 0x0000555555856aa3 in exec_byte_code (bytestr=XIL(0x7ffff26110fc), 
vector=XIL(0x7ffff2610d65), maxdepth=make_fixnum(13), 
args_template=make_fixnum(1025), nargs=1, args=0x7fffffffdc90) at 
../../master/src/bytecode.c:632
        op = 3
        type = CATCHER
        targets = {0x555555859938 <exec_byte_code+15219>, 0x55555585995d 
<exec_byte_code+15256>, 0x55555585995f <exec_byte_code+15258>, 0x555555859961 
<exec_byte_code+15260>, 0x555555859963 <exec_byte_code+15262>, 0x555555859963 
<exec_byte_code+15262>, 0x5555558599c8 <exec_byte_code+15363>, 0x555555859a3c 
<exec_byte_code+15479>, 0x555555856363 <exec_byte_code+1438>, 0x555555856365 
<exec_byte_code+1440>, 0x555555856367 <exec_byte_code+1442>, 0x555555856369 
<exec_byte_code+1444>, 0x55555585636b <exec_byte_code+1446>, 0x55555585636b 
<exec_byte_code+1446>, 0x555555856371 <exec_byte_code+1452>, 0x555555856332 
<exec_byte_code+1389>, 0x555555856789 <exec_byte_code+2500>, 0x55555585678b 
<exec_byte_code+2502>, 0x55555585678d <exec_byte_code+2504>, 0x55555585678f 
<exec_byte_code+2506>, 0x555555856791 <exec_byte_code+2508>, 0x555555856791 
<exec_byte_code+2508>, 0x5555558567c6 <exec_byte_code+2561>, 0x555555856797 
<exec_byte_code+2514>, 0x5555558569bb <exec_byte_code+3062>, 0x5555558569bd 
<exec_byte_code+3064>, 0x5555558569bf <exec_byte_code+3066>, 0x5555558569c1 
<exec_byte_code+3068>, 0x5555558569c3 <exec_byte_code+3070>, 0x5555558569c3 
<exec_byte_code+3070>, 0x555555856975 <exec_byte_code+2992>, 0x55555585698c 
<exec_byte_code+3015>, 0x555555856a70 <exec_byte_code+3243>, 0x555555856a72 
<exec_byte_code+3245>, 0x555555856a74 <exec_byte_code+3247>, 0x555555856a76 
<exec_byte_code+3249>, 0x555555856a78 <exec_byte_code+3251>, 0x555555856a78 
<exec_byte_code+3251>, 0x555555856a2a <exec_byte_code+3173>, 0x555555856a41 
<exec_byte_code+3196>, 0x555555856b22 <exec_byte_code+3421>, 0x555555856b24 
<exec_byte_code+3423>, 0x555555856b26 <exec_byte_code+3425>, 0x555555856b28 
<exec_byte_code+3427>, 0x555555856b2a <exec_byte_code+3429>, 0x555555856b2a 
<exec_byte_code+3429>, 0x555555856adc <exec_byte_code+3351>, 0x555555856af3 
<exec_byte_code+3374>, 0x55555585738a <exec_byte_code+5573>, 0x55555585726d 
<exec_byte_code+5288>, 0x555555857264 <exec_byte_code+5279>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x5555558575c4 <exec_byte_code+6143>, 0x5555558576da 
<exec_byte_code+6421>, 0x555555857737 <exec_byte_code+6514>, 0x555555857797 
<exec_byte_code+6610>, 0x5555558577f9 <exec_byte_code+6708>, 0x5555558565e2 
<exec_byte_code+2077>, 0x55555585665d <exec_byte_code+2200>, 0x555555857872 
<exec_byte_code+6829>, 0x55555585651f <exec_byte_code+1882>, 0x5555558566c5 
<exec_byte_code+2304>, 0x5555558578da <exec_byte_code+6933>, 0x555555857942 
<exec_byte_code+7037>, 0x55555585798a <exec_byte_code+7109>, 0x5555558579f2 
<exec_byte_code+7213>, 0x555555857a58 <exec_byte_code+7315>, 0x555555857b3e 
<exec_byte_code+7545>, 0x555555857b86 <exec_byte_code+7617>, 0x555555857bee 
<exec_byte_code+7721>, 0x555555857c73 <exec_byte_code+7854>, 0x555555857cbb 
<exec_byte_code+7926>, 0x555555857d03 <exec_byte_code+7998>, 0x555555857d6b 
<exec_byte_code+8102>, 0x555555857dd3 <exec_byte_code+8206>, 0x555555857e3b 
<exec_byte_code+8310>, 0x555555857ec0 <exec_byte_code+8443>, 0x555555857f0f 
<exec_byte_code+8522>, 0x555555857f5e <exec_byte_code+8601>, 0x555555858025 
<exec_byte_code+8800>, 0x55555585811e <exec_byte_code+9049>, 0x555555858217 
<exec_byte_code+9298>, 0x555555858284 <exec_byte_code+9407>, 0x5555558582f1 
<exec_byte_code+9516>, 0x55555585835e <exec_byte_code+9625>, 0x5555558583cb 
<exec_byte_code+9734>, 0x555555858438 <exec_byte_code+9843>, 0x555555858487 
<exec_byte_code+9922>, 0x555555858581 <exec_byte_code+10172>, 0x5555558585d0 
<exec_byte_code+10251>, 0x55555585861f <exec_byte_code+10330>, 0x55555585866e 
<exec_byte_code+10409>, 0x555555858774 <exec_byte_code+10671>, 0x5555558570e4 
<exec_byte_code+4895>, 0x5555558587cf <exec_byte_code+10762>, 0x555555858817 
<exec_byte_code+10834>, 0x5555558588d9 <exec_byte_code+11028>, 0x555555858942 
<exec_byte_code+11133>, 0x55555585899d <exec_byte_code+11224>, 0x5555558589e5 
<exec_byte_code+11296>, 0x555555858a28 <exec_byte_code+11363>, 0x555555858a6b 
<exec_byte_code+11430>, 0x555555858ab6 <exec_byte_code+11505>, 0x555555859938 
<exec_byte_code+15219>, 0x555555858b0e <exec_byte_code+11593>, 0x555555858b51 
<exec_byte_code+11660>, 0x555555858b94 <exec_byte_code+11727>, 0x555555858bd7 
<exec_byte_code+11794>, 0x555555858c1a <exec_byte_code+11861>, 0x555555858c5d 
<exec_byte_code+11928>, 0x5555558570e4 <exec_byte_code+4895>, 0x555555859938 
<exec_byte_code+15219>, 0x555555858ca5 <exec_byte_code+12000>, 0x555555858cf7 
<exec_byte_code+12082>, 0x555555858d3f <exec_byte_code+12154>, 0x555555858d87 
<exec_byte_code+12226>, 0x555555858def <exec_byte_code+12330>, 0x555555858e57 
<exec_byte_code+12434>, 0x555555858e9f <exec_byte_code+12506>, 0x555555858f5c 
<exec_byte_code+12695>, 0x555555858fc4 <exec_byte_code+12799>, 0x55555585902c 
<exec_byte_code+12903>, 0x555555859094 <exec_byte_code+13007>, 0x5555558590d7 
<exec_byte_code+13074>, 0x555555859938 <exec_byte_code+15219>, 0x55555585702a 
<exec_byte_code+4709>, 0x555555856bd4 <exec_byte_code+3599>, 0x55555585648d 
<exec_byte_code+1736>, 0x555555856c85 <exec_byte_code+3776>, 0x555555856d09 
<exec_byte_code+3908>, 0x555555856d8a <exec_byte_code+4037>, 0x555555856fde 
<exec_byte_code+4633>, 0x555555856ff3 <exec_byte_code+4654>, 0x555555856922 
<exec_byte_code+2909>, 0x5555558570ad <exec_byte_code+4840>, 0x55555585711b 
<exec_byte_code+4950>, 0x5555558571ac <exec_byte_code+5095>, 0x5555558571f5 
<exec_byte_code+5168>, 0x5555558573d6 <exec_byte_code+5649>, 0x555555857453 
<exec_byte_code+5774>, 0x5555558574d8 <exec_byte_code+5907>, 0x55555585753e 
<exec_byte_code+6009>, 0x555555856b86 <exec_byte_code+3521>, 0x55555585911f 
<exec_byte_code+13146>, 0x5555558591a4 <exec_byte_code+13279>, 0x5555558591ec 
<exec_byte_code+13351>, 0x555555859234 <exec_byte_code+13423>, 0x55555585927c 
<exec_byte_code+13495>, 0x5555558592c4 <exec_byte_code+13567>, 0x55555585932c 
<exec_byte_code+13671>, 0x555555859394 <exec_byte_code+13775>, 0x5555558593fc 
<exec_byte_code+13879>, 0x555555859464 <exec_byte_code+13983>, 0x5555558595ad 
<exec_byte_code+14312>, 0x555555859615 <exec_byte_code+14416>, 0x55555585967d 
<exec_byte_code+14520>, 0x5555558596c5 <exec_byte_code+14592>, 0x55555585972d 
<exec_byte_code+14696>, 0x555555859795 <exec_byte_code+14800>, 0x5555558597dd 
<exec_byte_code+14872>, 0x555555859825 <exec_byte_code+14944>, 0x5555558586bd 
<exec_byte_code+10488>, 0x55555585870c <exec_byte_code+10567>, 0x555555859874 
<exec_byte_code+15023>, 0x5555558598d6 <exec_byte_code+15121>, 0x555555859938 
<exec_byte_code+15219>, 0x555555856e0b <exec_byte_code+4166>, 0x555555856e28 
<exec_byte_code+4195>, 0x555555856e97 <exec_byte_code+4306>, 0x555555856f06 
<exec_byte_code+4417>, 0x555555856f72 <exec_byte_code+4525>, 0x555555857ac6 
<exec_byte_code+7425>, 0x555555857fad <exec_byte_code+8680>, 0x555555858861 
<exec_byte_code+10908>, 0x555555859acf <exec_byte_code+15626>, 0x555555859b44 
<exec_byte_code+15743>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859bda <exec_byte_code+15893>, 0x555555859c61 
<exec_byte_code+16028>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859938 <exec_byte_code+15219>, 0x555555859938 
<exec_byte_code+15219>, 0x555555859daf <exec_byte_code+16362> <repeats 64 
times>}
        const_length = 24
        bytestr_length = 138
        vectorp = 0x7ffff2610d68
        quitcounter = 1 '\001'
        stack_items = 14
        sa_avail = 16134
        sa_count = 5
        alloc = 0x7fffffffd6e0
        stack_base = 0x7fffffffd6e0
        top = 0x7fffffffd718
        stack_lim = 0x7fffffffd750
        bytestr_data = 0x7fffffffd750 "\304\020\211?\205\023"
        pc = 0x7fffffffd7b2 "\006\006\071\203\211"
        count = 5
        result = XIL(0)
#18 0x00005555557fdbcb in fetch_and_exec_byte_code (fun=XIL(0x7ffff2610d35), 
syms_left=make_fixnum(1025), nargs=1, args=0x7fffffffdc88) at 
../../master/src/eval.c:3036
#19 0x00005555557fe051 in funcall_lambda (fun=XIL(0x7ffff2610d35), nargs=1, 
arg_vector=0x7fffffffdc88) at ../../master/src/eval.c:3117
        val = XIL(0x7fffffffdc00)
        syms_left = make_fixnum(1025)
        next = XIL(0x555555e62080)
        lexenv = XIL(0x1800000000)
        count = 5
        i = 93824994985307
        optional = false
        rest = false
#20 0x00005555557fd424 in Ffuncall (nargs=2, args=0x7fffffffdc80) at 
../../master/src/eval.c:2916
        fun = XIL(0x7ffff2610d35)
        original_fun = XIL(0x4470)
        funcar = XIL(0)
        numargs = 1
        val = XIL(0x7fffffffdca8)
        count = 4
#21 0x00005555557fcbee in call1 (fn=XIL(0x4470), arg1=XIL(0x18856b0)) at 
../../master/src/eval.c:2774
#22 0x0000555555721564 in command_loop_1 () at ../../master/src/keyboard.c:1466
        scount = 3
        cmd = XIL(0x18856b0)
        keybuf = {make_fixnum(113), XIL(0x7ffff2c1d0cd), XIL(0), XIL(0), 
XIL(0x7fffffffdd70), XIL(0x5555557fcc78), XIL(0), XIL(0x7ffff25734c4), 
XIL(0x555557e28a53), XIL(0), XIL(0x555555e62080), XIL(0), XIL(0x7fffffffdd50), 
XIL(0x55555571d378), XIL(0), XIL(0), XIL(0x555555e62080), XIL(0), 
XIL(0x7fffffffdd80), make_fixnum(23456248745992), XIL(0), XIL(0x555555e62080), 
XIL(0), XIL(0), XIL(0x7fffffffdda0), make_fixnum(23456248746013), 
make_fixnum(2), make_fixnum(0), XIL(0x7fffffffdde0), XIL(0x5555557f96dc)}
        i = 1
        prev_modiff = 60
        prev_buffer = 0x5555578531b0
        already_adjusted = false
#23 0x00005555557f919c in internal_condition_case (bfun=0x555555720d0e 
<command_loop_1>, handlers=XIL(0x90), hfun=0x555555720331 <cmd_error>) at 
../../master/src/eval.c:1439
        val = XIL(0x5555560c2983)
        c = 0x555555f5d3e0
#24 0x00005555557208fe in command_loop_2 (ignore=XIL(0)) at 
../../master/src/keyboard.c:1094
        val = make_fixnum(0)
#25 0x00005555557f85ac in internal_catch (tag=XIL(0xd9e0), func=0x5555557208d1 
<command_loop_2>, arg=XIL(0)) at ../../master/src/eval.c:1189
        val = XIL(0xd9e0)
        c = 0x555555f46710
#26 0x000055555572089d in command_loop () at ../../master/src/keyboard.c:1073
#27 0x000055555571fe1a in recursive_edit_1 () at ../../master/src/keyboard.c:720
        count = 1
        val = XIL(0x7fffffffdf50)
#28 0x0000555555720011 in Frecursive_edit () at ../../master/src/keyboard.c:789
        count = 0
        buffer = XIL(0)
#29 0x000055555571bef6 in main (argc=2, argv=0x7fffffffe1b8) at 
../../master/src/emacs.c:2050
        stack_bottom_variable = 0x7ffff617e053
        no_loadup = false
        junk = 0x0
        dname_arg = 0x0
        ch_to_dir = 0x0
        original_pwd = 0x0
        dump_mode = 0x0
        skip_args = 1
        temacs = 0x0
        attempt_load_pdump = true
        rlim = {
          rlim_cur = 10022912,
          rlim_max = 18446744073709551615
        }
        lc_all = 0x0
        sockfd = -1
        module_assertions = false

Lisp Backtrace:
"kill-buffer" (0xffffcce8)
"gnus-server-exit" (0xffffd390)
"funcall-interactively" (0xffffd388)
"call-interactively" (0xffffd720)
"command-execute" (0xffffdc88)


(gdb) p replace_buffer_in_windows_safely_count 
$1 = 0
(gdb) frame 2
#2  0x000055555564d93a in replace_buffer_in_windows_safely (
    buffer=XIL(0x5555578531b5)) at ../../master/src/window.c:3450
3450      eassert (count == replace_buffer_in_windows_safely_count);
(gdb) p buffer
$2 = XIL(0x5555578531b5)
(gdb) xtype
Lisp_Vectorlike
PVEC_BUFFER
(gdb) xbuffer
$3 = (struct buffer *) 0x5555578531b0
0x5555587d0e90 "*Server*"


-- 
Michael Welsh Duggan
(mwd@cert.org)