This is the first Segmentation of today (17:45)

(gdb) bt
#0  balance_intervals_internal (tree=0x72656e006c696e61) at intervals.c:493
#1  0x0000000000580dc4 in balance_intervals_internal (tree=0xa97e580) at intervals.c:494
#2  0x0000000000526555 in sweep_strings () at alloc.c:1844
#3  gc_sweep () at alloc.c:6347
#4  Fgarbage_collect () at alloc.c:5586
#5  0x000000000053b5bd in maybe_gc () at lisp.h:4519
#6  eval_sub (form=31458470) at eval.c:2084
#7  0x000000000053bcb6 in Fprogn (body=<optimized out>) at eval.c:468
#8  0x000000000053b234 in unbind_to (count=<optimized out>, value=12034098) at eval.c:3309
#9 0x000000000056de20 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=0, nargs=7, args=0x82b4e0) at bytecode.c:941
#10 0x000000000053bea4 in funcall_lambda (fun=30035797,
 nargs=<optimized out>, arg_vector=0x7f7fffffb180) at
 eval.c:3049
#11 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffb178) at eval.c:2876
#12 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=12034098, nargs=2, args=0x82b4e0) at
 bytecode.c:919
#13 0x000000000053bea4 in funcall_lambda (fun=30035501,
 nargs=<optimized out>, arg_vector=0x7f7fffffb340) at
 eval.c:3049
#14 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffb338) at eval.c:2876
#15 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=0, nargs=2, args=0x82b4e0) at bytecode.c:919
#16 0x000000000053bea4 in funcall_lambda (fun=29749893,
 nargs=<optimized out>, arg_vector=0x7f7fffffb520) at
 eval.c:3049
#17 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffb518) at eval.c:2876
#18 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=0, nargs=1, args=0x82b4e0) at bytecode.c:919
#19 0x000000000053bea4 in funcall_lambda (fun=31540421,
 nargs=<optimized out>, arg_vector=0x7f7fffffb6d0) at
 eval.c:3049
#20 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffb6c8) at eval.c:2876
#21 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=0, nargs=1, args=0x82b4e0) at bytecode.c:919
#22 0x000000000053bea4 in funcall_lambda (fun=31541221,
 nargs=<optimized out>, arg_vector=0x7f7fffffb8f8) at
 eval.c:3049
#23 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffb8f0) at eval.c:2876
#24 0x0000000000539610 in Fcall_interactively
 (function=28126146, record_flag=12034098, keys=12068477) at
 callint.c:836
#25 0x000000000053c46a in Ffuncall (nargs=<optimized out>, args=0x7f7fffffbab8) at eval.c:2822
#26 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=0, nargs=4, args=0x82b4e0) at bytecode.c:919
#27 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffbc20) at eval.c:2876
#28 0x000000000053c616 in call1 (fn=<optimized out>, arg1=<optimized out>) at eval.c:2614
#29 0x00000000004dff0a in command_loop_1 () at keyboard.c:1556
#30 0x000000000053aaff in internal_condition_case
 (bfun=0x4dfbb1 <command_loop_1>, handlers=<optimized out>,
 hfun=0x4d7679 <cmd_error>) at eval.c:1354
#31 0x00000000004d648a in command_loop_2 (ignore=<optimized out>) at keyboard.c:1174
#32 0x000000000053aa13 in internal_catch (tag=Cannot access memory at address 0x72656e006c696e29
) at eval.c:1118
#33 0x00000000004d7272 in command_loop () at keyboard.c:1145
#34 recursive_edit_1 () at keyboard.c:777
#35 0x00000000004d757f in Frecursive_edit () at keyboard.c:845
#36 0x000000000053c401 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffbfc0) at eval.c:2812
#37 0x000000000056ddd3 in exec_byte_code
 (bytestr=9223372036854775807, vector=30, maxdepth=159066312,
 args_template=256, nargs=1, args=0x82b4e0) at bytecode.c:919
#38 0x000000000053c217 in Ffuncall (nargs=<optimized out>, args=0x7f7fffffc150) at eval.c:2876
#39 0x000000000053d162 in Fapply (nargs=<optimized out>, args=0x7f7fffffc200) at eval.c:2354
#40 0x000000000053c6cd in apply1 (fn=12170722, arg=<optimized out>) at eval.c:2588
#41 0x000000000053c864 in call_debugger (arg=93438006) at eval.c:332
#42 0x000000000053cc47 in maybe_call_debugger (data=93438054,
 sig=12088114, conditions=8579998) at eval.c:1733
#43 Fsignal (error_symbol=12088114, data=93438054) at eval.c:1551
...
..
---Type <return> to continue, or q <return> to quit---
#88 0x00000000004d648a in command_loop_2 (ignore=<optimized out>) at keyboard.c:1174
#89 0x000000000053aa13 in internal_catch (tag=Cannot access memory at address 0x72656e006c696e29
) at eval.c:1118
#90 0x00000000004d72f3 in command_loop () at keyboard.c:1153
#91 recursive_edit_1 () at keyboard.c:777
#92 0x00000000004d757f in Frecursive_edit () at keyboard.c:845
#93 0x00000000004d2392 in main (argc=<optimized out>, argv=0x7f7fffffdab8) at emacs.c:1646

Lisp Backtrace:

"Automatic GC" (0xb53208)
"wl-thread-save-entities" (0xffffb180)
"wl-thread-save-entity" (0xffffb340)
"wl-summary-save-view-cache" (0xffffb520)
"wl-summary-save-view" (0xffffb6d0)
"wl-summary-exit" (0xffffb8f8)
"call-interactively" (0xffffbac0)
"command-execute" (0xffffbc28)
"recursive-edit" (0xffffbfc8)
"debug" (0xffffc158)
"isearch-search" (0xffffc4b0)
"isearch-search-and-update" (0xffffc670)
"isearch-process-search-string" (0xffffc830)
0x9807f8 PVEC_COMPILED
"funcall" (0xffffca00)
"with-no-warnings" (0xffffcbd8)
"setq" (0xffffccb8)
"if" (0xffffcd88)
"let" (0xffffced8)
"ad-Advice-isearch-process-search-char" (0xffffd110)
"apply" (0xffffd108)
"isearch-process-search-char" (0xffffd260)
"isearch-printing-char" (0xffffd460)
"call-interactively" (0xffffd620)
"command-execute" (0xffffd788)
(gdb) 
(gdb)