$ gdb attach 9358
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attach: No such file or directory.
Attaching to process 9358
[New LWP 9361]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
0x00007fda414dd3bd in pthread_cond_wait@@GLIBC_2.3.2 () from /usr/lib64/libpthread.so.0
(gdb) cont
Continuing.

Thread 1 "tkscidb-beta" received signal SIGSEGV, Segmentation fault.
0x00007fda41e3f268 in HashArrayKey () from /usr/lib64/libtcl8.6.so
(gdb) bt
#0  0x00007fda41e3f268 in HashArrayKey () from /usr/lib64/libtcl8.6.so
#1  0x00007fda41e3f3c9 in CreateHashEntry () from /usr/lib64/libtcl8.6.so
#2  0x00007fda432f6a09 in MakeTransparentWindowExist (tkwin=0x7fda3c57c530, parent=2621473) at tk_busy.cpp:871
#3  0x00007fda432f6dd6 in CreateBusy (interp=0x7fffce588620, tkRef=0x7fffce8b4500) at tk_busy.cpp:1016
#4  0x00007fda432f7066 in HoldBusy (busyTablePtr=0x7fda43b3de80 <ScBusyObjCmd(void*, Tcl_Interp*, int, Tcl_Obj* const*)::busyTable>, interp=0x7fffce588620, windowObj=0x7fda39d98580, configObjc=0, configObjv=0x7fffce58d070) at tk_busy.cpp:1171
#5  0x00007fda432f763d in ScBusyObjCmd (clientData=0x0, interp=0x7fffce588620, objc=3, objv=0x7fffce58d058) at tk_busy.cpp:1342
#6  0x00007fda43255a89 in safeCall (clientData=0x7fda432f70f8 <ScBusyObjCmd(ClientData, Tcl_Interp*, int, Tcl_Obj* const*)>, ti=0x7fffce588620, objc=3, objv=0x7fffce58d058) at tcl_base.cpp:1006
#7  0x00007fda41d9fe36 in TclNRRunCallbacks () from /usr/lib64/libtcl8.6.so
#8  0x00007fda42b89d84 in Ttk_InvokeEnsemble () from /usr/lib64/libtk8.6.so
#9  0x00007fda42b9022c in WidgetInstanceObjCmd () from /usr/lib64/libtk8.6.so
#10 0x00007fda41d9fe36 in TclNRRunCallbacks () from /usr/lib64/libtcl8.6.so
#11 0x00007fda42b90f8a in TtkWidgetInstateCommand () from /usr/lib64/libtk8.6.so
#12 0x00007fda42b89d84 in Ttk_InvokeEnsemble () from /usr/lib64/libtk8.6.so
#13 0x00007fda42b9022c in WidgetInstanceObjCmd () from /usr/lib64/libtk8.6.so
#14 0x00007fda41d9fe36 in TclNRRunCallbacks () from /usr/lib64/libtcl8.6.so
#15 0x00007fda42b90f8a in TtkWidgetInstateCommand () from /usr/lib64/libtk8.6.so
#16 0x00007fda42b89d84 in Ttk_InvokeEnsemble () from /usr/lib64/libtk8.6.so
#17 0x00007fda42b9022c in WidgetInstanceObjCmd () from /usr/lib64/libtk8.6.so
#18 0x00007fda41d9fe36 in TclNRRunCallbacks () from /usr/lib64/libtcl8.6.so
#19 0x00007fda41da1ccc in TclEvalEx () from /usr/lib64/libtcl8.6.so
#20 0x00007fda41da2503 in Tcl_EvalEx () from /usr/lib64/libtcl8.6.so
#21 0x00007fda42ada896 in Tk_BindEvent () from /usr/lib64/libtk8.6.so
#22 0x00007fda42ade7ef in TkBindEventProc () from /usr/lib64/libtk8.6.so
#23 0x00007fda42ae66fa in Tk_HandleEvent () from /usr/lib64/libtk8.6.so
#24 0x00007fda42ae68f1 in WindowEventProc () from /usr/lib64/libtk8.6.so
#25 0x00007fda41e69c88 in Tcl_ServiceEvent () from /usr/lib64/libtcl8.6.so
#26 0x00007fda41e69ef0 in Tcl_DoOneEvent () from /usr/lib64/libtcl8.6.so
#27 0x00007fda42ae7112 in Tk_MainLoop () from /usr/lib64/libtk8.6.so
#28 0x00007fda42af5ccb in Tk_MainEx () from /usr/lib64/libtk8.6.so
#29 0x00007fda4324cc15 in main (argc=3, argv=0x7fffd5496a98) at tkscidb.cpp:110