gdb python test_saxon.py
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Reading symbols from python...(no debugging symbols found)...done.
"/home/mrslow/dev/scripts_py3/test_saxon.py" is not a core dump: File format not recognized
(gdb) handle SIG35 noprint nostop
Signal        Stop	Print	Pass to program	Description
SIG35         No	No	Yes		Real-time event 35
(gdb) run test_saxon.py
Starting program: /home/mrslow/dev/scripts_py3/.venv/bin/python test_saxon.py
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff220f700 (LWP 17822)]
[New Thread 0x7ffff1a0e700 (LWP 17823)]
[Thread 0x7ffff1a0e700 (LWP 17823) exited]
[New Thread 0x7ffff7fee700 (LWP 17824)]
[New Thread 0x7ffff7e23700 (LWP 17825)]
[New Thread 0x7ffff64be700 (LWP 17826)]
[New Thread 0x7ffff058b700 (LWP 17827)]
[New Thread 0x7ffff056d700 (LWP 17828)]
[New Thread 0x7ffff054f700 (LWP 17829)]
[New Thread 0x7ffff0531700 (LWP 17830)]
[New Thread 0x7ffff0513700 (LWP 17831)]
[New Thread 0x7ffff04f5700 (LWP 17832)]
[New Thread 0x7ffff04d7700 (LWP 17833)]
[New Thread 0x7ffff04b9700 (LWP 17834)]
[New Thread 0x7ffbd315d700 (LWP 17835)]
[New Thread 0x7ffbd307b700 (LWP 17836)]
[New Thread 0x7ffbd2f99700 (LWP 17837)]
[New Thread 0x7ffbd2eb7700 (LWP 17838)]
Creating new xquery processor -> OK
Prepare xml -> OK
Prepare xquery -> OK
Setup context -> OK
Setup `$document` variable -> OK
Running XQuery -> 
Syntax error on line 124 at column 7 near {...у[x443]л[x43b]ь[x44c]т[x442]а[x430]т[x442]а[x430]> </П[x41f]р[x440]о[x43e]в[x432]е[x435]р[x440]к[x43a]а[x430]> </Б[x411]л[x43b]о[x43e]к[x43a]...} 
  XPST0003: End of input encountered while parsing direct constructor
None

Thread 1 "python" received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/x86_64/strlen.S:106
106	../sysdeps/x86_64/strlen.S: No such file or directory.
(gdb) bt
#0  strlen () at ../sysdeps/x86_64/strlen.S:106
#1  0x00007ffff64db722 in __pyx_f_6saxonc_make_py_str (__pyx_v_c_value=0xbbd0b8d0bcd0b0d0 <error: Cannot access memory at address 0xbbd0b8d0bcd0b0d0>) at saxonc.cpp:2244
#2  0x00007ffff64eb139 in __pyx_pf_6saxonc_17PyXQueryProcessor_44get_error_message (__pyx_v_self=0x7ffff67d9b90, __pyx_v_index=<optimized out>) at saxonc.cpp:25992
#3  __pyx_pw_6saxonc_17PyXQueryProcessor_45get_error_message (__pyx_v_self=0x7ffff67d9b90, __pyx_v_index=<optimized out>) at saxonc.cpp:25966
#4  0x00000000004e6690 in _PyMethodDef_RawFastCallKeywords ()
#5  0x00000000005df659 in _PyMethodDescr_FastCallKeywords ()
#6  0x000000000055d004 in _PyEval_EvalFrameDefault ()
#7  0x0000000000557a02 in _PyEval_EvalCodeWithName ()
#8  0x0000000000557783 in PyEval_EvalCode ()
#9  0x00000000006239a2 in ?? ()
#10 0x0000000000623d2a in PyRun_FileExFlags ()
#11 0x0000000000623bc7 in PyRun_SimpleFileExFlags ()
#12 0x00000000005fc1da in ?? ()
#13 0x00000000005fbe5a in _Py_UnixMain ()
#14 0x00007ffff6cbd840 in __libc_start_main (main=0x4e3070 <main>, argc=2, argv=0x7fffffffde08, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, 
    stack_end=0x7fffffffddf8) at ../csu/libc-start.c:291
#15 0x00000000005fbd49 in _start ()