bug#36019: 27.0.50; Segfault in color_distance in emacs --batch

[Vitalie Spinu]

Hi,

One of my packages started segfaulting in tests after emacs 27 update. I cannot
reproduce it in an X session, nor make a simple reproducible example. Hopefully
the backtraces will be enough.

The issue appeared in the last 4-5 months. I can bisect if needed.


  Vitalie


In GNU Emacs 27.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.22.30)
 of 2019-05-31 built on Galago
Repository revision: cc71a82fc705a73fa3ef6cda3ec6bee1cb654d7e
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.11906000
System Description: Ubuntu 18.04.2 LTS

Configured using:
 'configure 'CFLAGS=-O0 -g3''

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

Important settings:
  value of $LC_MONETARY: nl_NL.UTF-8
  value of $LC_NUMERIC: nl_NL.UTF-8
  value of $LC_TIME: en_DK.UTF-8
  value of $LANG: en_GB.UTF-8
  locale-coding-system: utf-8-unix


Memory information:
((conses 16 1295385 251255)
 (symbols 48 69993 1)
 (strings 32 320606 17418)
 (string-bytes 1 10407416)
 (vectors 16 96826)
 (vector-slots 8 1481065 211870)
 (floats 8 702 397)
 (intervals 56 12203 0)
 (buffers 992 27))


================================================================

Thread 1 "emacs" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in  ()
#1  0x00005555556950fa in Fcolor_distance (color1=XIL(0x5555579be484), 
color2=XIL(0x5555570ba454), frame=XIL(0), metric=XIL(0)) at xfaces.c:4212
#2  0x00005555557a304f in funcall_subr (subr=0x555555e0f200 <Scolor_distance>, 
numargs=2, args=0x7fffffff2bd8) at eval.c:2884
#3  0x00005555557a2b7f in Ffuncall (nargs=3, args=0x7fffffff2bd0) at eval.c:2803
#4  0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x5555570ba434), 
vector=XIL(0x555556f8b325), maxdepth=make_number(4), 
args_template=make_number(257), nargs=1, args=0x7fffffff30b8) at bytecode.c:633
#5  0x00005555557a362a in funcall_lambda (fun=XIL(0x555556f8b355), nargs=1, 
arg_vector=0x7fffffff30b0) at eval.c:2998
#6  0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffff30a8) at eval.c:2805
#7  0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x5555570ba554), 
vector=XIL(0x555556f8b455), maxdepth=make_number(18), 
args_template=make_number(770), nargs=3, args=0x7fffffff35b0) at bytecode.c:633
#8  0x00005555557a362a in funcall_lambda (fun=XIL(0x555556f8b545), nargs=3, 
arg_vector=0x7fffffff3598) at eval.c:2998
#9  0x00005555557a2bc3 in Ffuncall (nargs=4, args=0x7fffffff3590) at eval.c:2805
#10 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe706a324), 
vector=XIL(0x7fffe6f0a8bd), maxdepth=make_number(7), 
args_template=make_number(770), nargs=2, args=0x7fffffff3a08) at bytecode.c:633
#11 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe6f0a88d), nargs=2, 
arg_vector=0x7fffffff39f8) at eval.c:2998
#12 0x00005555557a2bc3 in Ffuncall (nargs=3, args=0x7fffffff39f0) at eval.c:2805
#13 0x00005555557a1df2 in Fapply (nargs=2, args=0x7fffffff3aa0) at eval.c:2425
#14 0x00005555557a131c in eval_sub (form=XIL(0x5555567446f3)) at eval.c:2246
#15 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#16 0x000055555579d3fa in Fif (args=XIL(0x5555567440f3)) at eval.c:419
#17 0x00005555557a1115 in eval_sub (form=XIL(0x555556744103)) at eval.c:2227
#18 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#19 0x00005555557a3903 in funcall_lambda (fun=XIL(0x5555567441f3), nargs=3, 
arg_vector=0x7fffffff3e68) at eval.c:3069
#20 0x00005555557a2ca5 in Ffuncall (nargs=4, args=0x7fffffff3e60) at eval.c:2817
#21 0x00005555557a1df2 in Fapply (nargs=3, args=0x7fffffff4038) at eval.c:2425
#22 0x00005555557a2ec3 in funcall_subr (subr=0x555555e17f80 <Sapply>, 
numargs=3, args=0x7fffffff4038) at eval.c:2856
#23 0x00005555557a2b7f in Ffuncall (nargs=4, args=0x7fffffff4030) at eval.c:2803
#24 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe6eaf924), 
vector=XIL(0x555556054595), maxdepth=make_number(5), 
args_template=make_number(128), nargs=2, args=0x7fffffff44a8) at bytecode.c:633
#25 0x00005555557a362a in funcall_lambda (fun=XIL(0x555556063ad5), nargs=2, 
arg_vector=0x7fffffff44a8) at eval.c:2998
#26 0x00005555557a2bc3 in Ffuncall (nargs=3, args=0x7fffffff44a0) at eval.c:2805
#27 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe6fff7a4), 
vector=XIL(0x5555576a2075), maxdepth=make_number(10), 
args_template=make_number(257), nargs=1, args=0x7fffffff4b70) at bytecode.c:633
#28 0x00005555557a362a in funcall_lambda (fun=XIL(0x5555576a20c5), nargs=1, 
arg_vector=0x7fffffff4b68) at eval.c:2998
#29 0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffff4b60) at eval.c:2805
#30 0x00005555557a1fef in run_hook_wrapped_funcall (nargs=2, 
args=0x7fffffff4b60) at eval.c:2532
#31 0x00005555557a226f in run_hook_with_args (nargs=2, args=0x7fffffff4b60, 
funcall=0x5555557a1fa3 <run_hook_wrapped_funcall>) at eval.c:2613
#32 0x00005555557a2040 in Frun_hook_wrapped (nargs=2, args=0x7fffffff4b60) at 
eval.c:2547
#33 0x00005555557a2ec3 in funcall_subr (subr=0x555555e180c0 
<Srun_hook_wrapped>, numargs=2, args=0x7fffffff4b60) at eval.c:2856
#34 0x00005555557a2b7f in Ffuncall (nargs=3, args=0x7fffffff4b58) at eval.c:2803
#35 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe6fff88c), 
vector=XIL(0x7fffe6fff72d), maxdepth=make_number(19), 
args_template=make_number(514), nargs=2, args=0x7fffffff4fe0) at bytecode.c:633
#36 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe6fff6fd), nargs=2, 
arg_vector=0x7fffffff4fd0) at eval.c:2998
#37 0x00005555557a338e in apply_lambda (fun=XIL(0x7fffe6fff6fd), 
args=XIL(0x555556743b73), count=125) at eval.c:2935
#38 0x00005555557a16da in eval_sub (form=XIL(0x555556743b83)) at eval.c:2319
#39 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#40 0x000055555579531f in Fsave_restriction (body=XIL(0x55555674ac03)) at 
editfns.c:2836
#41 0x00005555557a1115 in eval_sub (form=XIL(0x555556753bd3)) at eval.c:2227
#42 0x000055555579d3dc in Fif (args=XIL(0x555556753b03)) at eval.c:418
#43 0x00005555557a1115 in eval_sub (form=XIL(0x555556753b13)) at eval.c:2227
#44 0x000055555579f1d2 in internal_lisp_condition_case 
(var=XIL(0x2aaa91228098), bodyform=XIL(0x555556753b13), 
handlers=XIL(0x55555674ae03)) at eval.c:1323
#45 0x000055555579edb4 in Fcondition_case (args=XIL(0x5555567539f3)) at 
eval.c:1247
#46 0x00005555557a1115 in eval_sub (form=XIL(0x5555567539e3)) at eval.c:2227
#47 0x000055555579d502 in Fprogn (body=XIL(0x555556743813)) at eval.c:463
#48 0x000055555579e852 in Flet (args=XIL(0x555556753913)) at eval.c:986
#49 0x00005555557a1115 in eval_sub (form=XIL(0x5555567538f3)) at eval.c:2227
#50 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#51 0x000055555579d3fa in Fif (args=XIL(0x5555567538a3)) at eval.c:419
#52 0x00005555557a1115 in eval_sub (form=XIL(0x5555567538e3)) at eval.c:2227
#53 0x000055555579d502 in Fprogn (body=XIL(0x5555567536a3)) at eval.c:463
#54 0x00005555557a1115 in eval_sub (form=XIL(0x5555567537c3)) at eval.c:2227
#55 0x000055555579d3dc in Fif (args=XIL(0x555556753633)) at eval.c:418
#56 0x00005555557a1115 in eval_sub (form=XIL(0x555556753653)) at eval.c:2227
#57 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#58 0x00005555557a1115 in eval_sub (form=XIL(0x555556753613)) at eval.c:2227
#59 0x000055555579ed3a in Funwind_protect (args=XIL(0x555556753593)) at 
eval.c:1209
#60 0x00005555557a1115 in eval_sub (form=XIL(0x5555567535a3)) at eval.c:2227
#61 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#62 0x000055555579e494 in FletX (args=XIL(0x555556753383)) at eval.c:918
#63 0x00005555557a1115 in eval_sub (form=XIL(0x555556753373)) at eval.c:2227
#64 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#65 0x000055555579e852 in Flet (args=XIL(0x555556753353)) at eval.c:986
#66 0x00005555557a1115 in eval_sub (form=XIL(0x555556753343)) at eval.c:2227
#67 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#68 0x000055555579e852 in Flet (args=XIL(0x555556753323)) at eval.c:986
#69 0x00005555557a1115 in eval_sub (form=XIL(0x555556753313)) at eval.c:2227
#70 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#71 0x00005555557a1115 in eval_sub (form=XIL(0x555556753303)) at eval.c:2227
#72 0x000055555579d3dc in Fif (args=XIL(0x555556753243)) at eval.c:418
#73 0x00005555557a1115 in eval_sub (form=XIL(0x555556753253)) at eval.c:2227
#74 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#75 0x00005555557a3903 in funcall_lambda (fun=XIL(0x5555578a58d3), nargs=1, 
arg_vector=0x7fffffff6848) at eval.c:3069
#76 0x00005555557a2ca5 in Ffuncall (nargs=2, args=0x7fffffff6840) at eval.c:2817
#77 0x00005555557a131c in eval_sub (form=XIL(0x5555567429f3)) at eval.c:2246
#78 0x000055555579d502 in Fprogn (body=XIL(0x555556742b93)) at eval.c:463
#79 0x000055555579d532 in prog_ignore (body=XIL(0x5555567429a3)) at eval.c:474
#80 0x000055555579e8c6 in Fwhile (args=XIL(0x555556742943)) at eval.c:1004
#81 0x00005555557a1115 in eval_sub (form=XIL(0x555556742933)) at eval.c:2227
#82 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#83 0x000055555579e494 in FletX (args=XIL(0x555556742923)) at eval.c:918
#84 0x00005555557a1115 in eval_sub (form=XIL(0x555556742813)) at eval.c:2227
#85 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#86 0x000055555579531f in Fsave_restriction (body=XIL(0x5555567420d3)) at 
editfns.c:2836
#87 0x00005555557a1115 in eval_sub (form=XIL(0x5555567420c3)) at eval.c:2227
#88 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#89 0x00005555557a3903 in funcall_lambda (fun=XIL(0x555556741d03), nargs=3, 
arg_vector=0x7fffffff6f00) at eval.c:3069
#90 0x00005555557a338e in apply_lambda (fun=XIL(0x555556741d13), 
args=XIL(0x555556753003), count=91) at eval.c:2935
#91 0x00005555557a18f2 in eval_sub (form=XIL(0x555556753043)) at eval.c:2349
#92 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#93 0x000055555578db2b in Fsave_excursion (args=XIL(0x55555674df63)) at 
editfns.c:842
#94 0x00005555557a1115 in eval_sub (form=XIL(0x55555674df73)) at eval.c:2227
#95 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#96 0x000055555579531f in Fsave_restriction (body=XIL(0x555556752f23)) at 
editfns.c:2836
#97 0x00005555557a1115 in eval_sub (form=XIL(0x555556752f33)) at eval.c:2227
#98 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#99 0x000055555579e494 in FletX (args=XIL(0x555556752eb3)) at eval.c:918
#100 0x00005555557a1115 in eval_sub (form=XIL(0x555556752ea3)) at eval.c:2227
#101 0x000055555579d502 in Fprogn (body=XIL(0x55555674eb53)) at eval.c:463
#102 0x000055555579d3fa in Fif (args=XIL(0x555556752e83)) at eval.c:419
#103 0x00005555557a1115 in eval_sub (form=XIL(0x555556752e93)) at eval.c:2227
#104 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#105 0x00005555557a3903 in funcall_lambda (fun=XIL(0x555556752c73), nargs=2, 
arg_vector=0x7fffffff7820) at eval.c:3069
#106 0x00005555557a2ca5 in Ffuncall (nargs=3, args=0x7fffffff7818) at 
eval.c:2817
#107 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe70145b4), 
vector=XIL(0x7fffe70144a5), maxdepth=make_number(5), 
args_template=make_number(512), nargs=0, args=0x7fffffff7cf8) at bytecode.c:633
#108 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe7014475), nargs=0, 
arg_vector=0x7fffffff7cf8) at eval.c:2998
#109 0x00005555557a2bc3 in Ffuncall (nargs=1, args=0x7fffffff7cf0) at 
eval.c:2805
#110 0x00005555557a1a51 in Fapply (nargs=2, args=0x7fffffff7cf0) at eval.c:2378
#111 0x00005555557a131c in eval_sub (form=XIL(0x5555567446f3)) at eval.c:2246
#112 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#113 0x000055555579d3fa in Fif (args=XIL(0x5555567440f3)) at eval.c:419
#114 0x00005555557a1115 in eval_sub (form=XIL(0x555556744103)) at eval.c:2227
#115 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#116 0x00005555557a3903 in funcall_lambda (fun=XIL(0x5555567441f3), nargs=1, 
arg_vector=0x7fffffff8260) at eval.c:3069
#117 0x00005555557a2ca5 in Ffuncall (nargs=2, args=0x7fffffff8258) at 
eval.c:2817
#118 0x00005555557a1a51 in Fapply (nargs=3, args=0x7fffffff8258) at eval.c:2378
#119 0x00005555557a2ec3 in funcall_subr (subr=0x555555e17f80 <Sapply>, 
numargs=3, args=0x7fffffff8258) at eval.c:2856
#120 0x00005555557a2b7f in Ffuncall (nargs=4, args=0x7fffffff8250) at 
eval.c:2803
#121 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe6eaf924), 
vector=XIL(0x5555566f3e55), maxdepth=make_number(5), 
args_template=make_number(128), nargs=0, args=0x7fffffff8650) at bytecode.c:633
#122 0x00005555557a362a in funcall_lambda (fun=XIL(0x5555567a8645), nargs=0, 
arg_vector=0x7fffffff8650) at eval.c:2998
#123 0x00005555557a338e in apply_lambda (fun=XIL(0x5555567a8645), args=XIL(0), 
count=71) at eval.c:2935
#124 0x00005555557a16da in eval_sub (form=XIL(0x5555567dd0e3)) at eval.c:2319
#125 0x000055555579d502 in Fprogn (body=XIL(0x555557154463)) at eval.c:463
#126 0x000055555578db6a in Fsave_current_buffer (args=XIL(0x555557155183)) at 
editfns.c:855
#127 0x00005555557a1115 in eval_sub (form=XIL(0x555557155173)) at eval.c:2227
#128 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#129 0x000055555579e852 in Flet (args=XIL(0x555557154493)) at eval.c:986
#130 0x00005555557a1115 in eval_sub (form=XIL(0x5555571544a3)) at eval.c:2227
#131 0x00005555557a1407 in eval_sub (form=XIL(0x5555571544b3)) at eval.c:2262
#132 0x000055555579d502 in Fprogn (body=XIL(0)) at eval.c:463
#133 0x00005555557a3903 in funcall_lambda (fun=XIL(0x5555571544d3), nargs=0, 
arg_vector=0x7fffffff8dc8) at eval.c:3069
#134 0x00005555557a2ca5 in Ffuncall (nargs=1, args=0x7fffffff8dc0) at 
eval.c:2817
#135 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x5555568344f4), 
vector=XIL(0x555556834b85), maxdepth=make_number(10), 
args_template=make_number(257), nargs=1, args=0x7fffffff9338) at bytecode.c:633
#136 0x00005555557a362a in funcall_lambda (fun=XIL(0x555556834cc5), nargs=1, 
arg_vector=0x7fffffff9330) at eval.c:2998
#137 0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffff9328) at 
eval.c:2805
#138 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x555556835644), 
vector=XIL(0x555556834e25), maxdepth=make_number(13), 
args_template=make_number(257), nargs=1, args=0x7fffffff9870) at bytecode.c:633
#139 0x00005555557a362a in funcall_lambda (fun=XIL(0x555556834f55), nargs=1, 
arg_vector=0x7fffffff9868) at eval.c:2998
#140 0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffff9860) at 
eval.c:2805
#141 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x55555683d2b4), 
vector=XIL(0x55555683d655), maxdepth=make_number(14), 
args_template=make_number(771), nargs=3, args=0x7fffffff9db8) at bytecode.c:633
#142 0x00005555557a362a in funcall_lambda (fun=XIL(0x55555683c545), nargs=3, 
arg_vector=0x7fffffff9da0) at eval.c:2998
#143 0x00005555557a2bc3 in Ffuncall (nargs=4, args=0x7fffffff9d98) at 
eval.c:2805
#144 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x55555683d374), 
vector=XIL(0x55555683d775), maxdepth=make_number(14), 
args_template=make_number(770), nargs=3, args=0x7fffffffa2c8) at bytecode.c:633
#145 0x00005555557a362a in funcall_lambda (fun=XIL(0x55555683d875), nargs=3, 
arg_vector=0x7fffffffa2b0) at eval.c:2998
#146 0x00005555557a2bc3 in Ffuncall (nargs=4, args=0x7fffffffa2a8) at 
eval.c:2805
#147 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x55555683e8e4), 
vector=XIL(0x55555683df75), maxdepth=make_number(10), 
args_template=make_number(256), nargs=1, args=0x7fffffffa760) at bytecode.c:633
#148 0x00005555557a362a in funcall_lambda (fun=XIL(0x55555683dfd5), nargs=1, 
arg_vector=0x7fffffffa758) at eval.c:2998
#149 0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffffa750) at 
eval.c:2805
#150 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x55555683ec54), 
vector=XIL(0x55555683fd55), maxdepth=make_number(6), 
args_template=make_number(256), nargs=1, args=0x7fffffffab78) at bytecode.c:633
#151 0x00005555557a362a in funcall_lambda (fun=XIL(0x55555683e555), nargs=1, 
arg_vector=0x7fffffffab70) at eval.c:2998
#152 0x00005555557a338e in apply_lambda (fun=XIL(0x55555683e555), 
args=XIL(0x555557168633), count=37) at eval.c:2935
#153 0x00005555557a16da in eval_sub (form=XIL(0x555557168623)) at eval.c:2319
#154 0x00005555557d3e19 in readevalloop_eager_expand_eval 
(val=XIL(0x555557168623), macroexpand=XIL(0x2aaa9123cc88)) at lread.c:1902
#155 0x00005555557d477e in readevalloop (readcharfun=XIL(0x555556331845), 
infile0=0x0, sourcename=XIL(0x555556083a44), printflag=false, unibyte=XIL(0), 
readfun=XIL(0), start=XIL(0), end=XIL(0)) at lread.c:2085
#156 0x00005555557d4b9e in Feval_buffer (buffer=XIL(0x555556331845), 
printflag=XIL(0), filename=XIL(0x55555660a334), unibyte=XIL(0), 
do_allow_print=XIL(0xc4e0)) at lread.c:2152
#157 0x00005555557a3094 in funcall_subr (subr=0x555555e1aac0 <Seval_buffer>, 
numargs=5, args=0x7fffffffafa0) at eval.c:2888
#158 0x00005555557a2b7f in Ffuncall (nargs=6, args=0x7fffffffaf98) at 
eval.c:2803
#159 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe6f14434), 
vector=XIL(0x7fffe6f13afd), maxdepth=make_number(6), args_template=XIL(0), 
nargs=0, args=0x0) at bytecode.c:633
#160 0x00005555557a3996 in funcall_lambda (fun=XIL(0x7fffe6f13acd), nargs=4, 
arg_vector=0x7fffe6f13afd) at eval.c:3076
#161 0x00005555557a2bc3 in Ffuncall (nargs=5, args=0x7fffffffb4e0) at 
eval.c:2805
#162 0x00005555557a2564 in call4 (fn=XIL(0x2aaa91086038), 
arg1=XIL(0x55555660a334), arg2=XIL(0x55555660a334), arg3=XIL(0), 
arg4=XIL(0xc4e0)) at eval.c:2681
#163 0x00005555557d29f5 in Fload (file=XIL(0x55555660a534), noerror=XIL(0), 
nomessage=XIL(0xc4e0), nosuffix=XIL(0), must_suffix=XIL(0)) at lread.c:1376
#164 0x00005555557a3094 in funcall_subr (subr=0x555555e1aa40 <Sload>, 
numargs=3, args=0x7fffffffb8d8) at eval.c:2888
#165 0x00005555557a2b7f in Ffuncall (nargs=4, args=0x7fffffffb8d0) at 
eval.c:2803
#166 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe72c16dc), 
vector=XIL(0x7fffe72c049d), maxdepth=make_number(23), 
args_template=make_number(257), nargs=1, args=0x7fffffffc1f8) at bytecode.c:633
#167 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe72c046d), nargs=1, 
arg_vector=0x7fffffffc1f0) at eval.c:2998
#168 0x00005555557a2bc3 in Ffuncall (nargs=2, args=0x7fffffffc1e8) at 
eval.c:2805
#169 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe72c52c4), 
vector=XIL(0x7fffe72c192d), maxdepth=make_number(12), 
args_template=make_number(0), nargs=0, args=0x7fffffffcd18) at bytecode.c:633
#170 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe72c18fd), nargs=0, 
arg_vector=0x7fffffffcd18) at eval.c:2998
#171 0x00005555557a2bc3 in Ffuncall (nargs=1, args=0x7fffffffcd10) at 
eval.c:2805
#172 0x00005555557ee947 in exec_byte_code (bytestr=XIL(0x7fffe72c5f24), 
vector=XIL(0x7fffe72c54a5), maxdepth=make_number(12), 
args_template=make_number(0), nargs=0, args=0x7fffffffd300) at bytecode.c:633
#173 0x00005555557a362a in funcall_lambda (fun=XIL(0x7fffe72c5475), nargs=0, 
arg_vector=0x7fffffffd300) at eval.c:2998
#174 0x00005555557a338e in apply_lambda (fun=XIL(0x7fffe72c5475), args=XIL(0), 
count=4) at eval.c:2935
#175 0x00005555557a16da in eval_sub (form=XIL(0x7fffe741c443)) at eval.c:2319
#176 0x00005555557a0b39 in Feval (form=XIL(0x7fffe741c443), lexical=XIL(0)) at 
eval.c:2103
#177 0x00005555556eaa70 in top_level_2 () at keyboard.c:1100
#178 0x000055555579f282 in internal_condition_case (bfun=0x5555556eaa4d 
<top_level_2>, handlers=XIL(0x5550), hfun=0x5555556ea4cf <cmd_error>) at 
eval.c:1352
#179 0x00005555556eaab8 in top_level_1 (ignore=XIL(0)) at keyboard.c:1108
#180 0x000055555579eaf3 in internal_catch (tag=XIL(0xcb70), func=0x5555556eaa72 
<top_level_1>, arg=XIL(0)) at eval.c:1113
#181 0x00005555556ea999 in command_loop () at keyboard.c:1069
#182 0x00005555556ea09e in recursive_edit_1 () at keyboard.c:714
#183 0x00005555556ea222 in Frecursive_edit () at keyboard.c:786
#184 0x00005555556e8030 in main (argc=15, argv=0x7fffffffd848) at emacs.c:1962

Lisp Backtrace:
"color-distance" (0xffff2bd8)
"css--contrasty-color" (0xffff30b0)
"css--fontify-region" (0xffff3598)
0xe6f0a888 PVEC_COMPILED
"apply" (0xffff3aa0)
"if" (0xffff3c48)
"polymode-inhibit-during-initialization" (0xffff3e68)
"apply" (0xffff4038)
"font-lock-fontify-region" (0xffff44a8)
0x576a20c0 PVEC_COMPILED
"run-hook-wrapped" (0xffff4b60)
"jit-lock--run-functions" (0xffff4fd0)
"save-restriction" (0xffff5208)
"if" (0xffff5348)
"condition-case" (0xffff5588)
"let" (0xffff5788)
"if" (0xffff58f8)
"progn" (0xffff5a38)
"if" (0xffff5b78)
"progn" (0xffff5cb8)
"unwind-protect" (0xffff5df8)
"let*" (0xffff5fa8)
"let" (0xffff61a8)
"let" (0xffff63a8)
"progn" (0xffff64e8)
"if" (0xffff6628)
0x578a58b0 Lisp type 3
"funcall" (0xffff6840)
"while" (0xffff6a18)
"let*" (0xffff6bc8)
"save-restriction" (0xffff6d48)
"pm-map-over-spans" (0xffff6f00)
"save-excursion" (0xffff7148)
"save-restriction" (0xffff72c8)
"let*" (0xffff7478)
"if" (0xffff75e8)
"poly-lock-fontify-now" (0xffff7820)
0xe7014470 PVEC_COMPILED
"apply" (0xffff7cf0)
"if" (0xffff7e98)
"polymode-inhibit-during-initialization" (0xffff8260)
"apply" (0xffff8258)
"font-lock-ensure" (0xffff8650)
"save-current-buffer" (0xffff8868)
"let" (0xffff8a78)
"kill-buffer" (0xffff8b88)
0x571544d0 Lisp type 3
"ert--run-test-internal" (0xffff9330)
"ert-run-test" (0xffff9868)
"ert-run-or-rerun-test" (0xffff9da0)
"ert-run-tests" (0xffffa2b0)
"ert-run-tests-batch" (0xffffa758)
"ert-run-tests-batch-and-exit" (0xffffab70)
"eval-buffer" (0xffffafa0)
"load-with-code-conversion" (0xffffb4e8)
"load" (0xffffb8d8)
"command-line-1" (0xffffc1f0)
"command-line" (0xffffcd18)
"normal-top-level" (0xffffd300)
(gdb)