*** stack smashing detected ***: terminated Program received signal SIGABRT, Aborted. __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 50 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory. (gdb) bt #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 0x00007ffff78c9537 in __GI_abort () at abort.c:79 #2 0x00007ffff7921458 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7ffff7a3f187 "*** %s ***: terminated\n") at ../sysdeps/posix/libc_fatal.c:155 #3 0x00007ffff79b25e2 in __GI___fortify_fail (msg=msg@entry=0x7ffff7a3f16f "stack smashing detected") at fortify_fail.c:26 #4 0x00007ffff79b25c0 in __stack_chk_fail () at stack_chk_fail.c:24 #5 0x00007ffff7c4608f in XSync () from /lib/x86_64-linux-gnu/libX11.so.6 #6 0x00005555556bd88f in Tk_DeleteErrorHandler (handler=0x555558e601c0) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkError.c:179 #7 0x000055555568339e in Tk_MeasureChars (tkfont=0x5555569e4760, source=0x5555558fa8c6 "", numBytes=0, maxLength=-1, flags=0, lengthPtr=0x7fffffffa3cc) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../unix/tkUnixRFont.c:822 #8 0x00005555556551bc in MeasureChars (tkfont=0x5555569e4760, source=0x5555558fa8c5 " ", maxBytes=1, rangeStart=0, rangeLength=1, startX=0, maxX=-1, flags=0, nextXPtr=0x7fffffffa458) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:8711 #9 0x0000555555655063 in SizeOfTab (textPtr=0x555556a02be0, tabStyle=TK_TEXT_TABSTYLE_TABULAR, tabArrayPtr=0x55555646c2c0, indexPtr=0x7fffffffd3bc, x=0, maxX=693) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:8578 #10 0x000055555564b4e8 in LayoutDLine (textPtr=0x555556a02be0, indexPtr=0x7fffffffd530) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:1612 #11 0x000055555564bd3f in UpdateDisplayInfo (textPtr=0x555556a02be0) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:1909 #12 0x000055555565116e in TkTextSetYView (textPtr=0x555556a02be0, indexPtr=0x7fffffffd6a0, pickPlace=-1) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:5400 #13 0x00005555556518f8 in TkTextSeeCmd (textPtr=0x555556a02be0, interp=0x555555a12b40, objc=3, objv=0x5555578648f0) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkTextDisp.c:5749 #14 0x0000555555639da0 in TextWidgetObjCmd (clientData=0x555556a02be0, interp=0x555555a12b40, objc=3, objv=0x5555578648f0) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkText.c:1508 #15 0x0000555555700900 in Dispatch (data=0x555558bb22a8, interp=0x555555a12b40, dummy4612=0) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclBasic.c:4650 #16 0x0000555555700967 in TclNRRunCallbacks (interp=0x555555a12b40, result=0, rootPtr=0x0) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclBasic.c:4666 #17 0x0000555555703786 in TclEvalObjEx (interp=0x555555a12b40, objPtr=0x5555579a9890, flags=131072, invoker=0x0, word=0) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclBasic.c:6125 #18 0x000055555570371a in Tcl_EvalObjEx (interp=0x555555a12b40, objPtr=0x5555579a9890, flags=131072) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclBasic.c:6106 #19 0x0000555555871fbb in AfterProc (clientData=0x555558bd22f0) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclTimer.c:1182 #20 0x0000555555870dba in TimerHandlerEventProc (dummy521=0x555558e77010, flags=-3) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclTimer.c:593 #21 0x000055555583bf90 in Tcl_ServiceEvent (flags=-3) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclNotify.c:710 #22 0x000055555583c3d0 in Tcl_DoOneEvent (flags=-3) at /home/francois/Documents/tcltk/fossil/tkchat/tcl9.0.0/generic/tclNotify.c:1007 #23 0x00005555556bf92d in Tk_MainLoop () at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkEvent.c:2127 #24 0x00005555555af1fa in Tk_MainEx (argc=-1, argv=0x7fffffffdf78, appInitProc=0x5555555aeb50 , interp=0x555555a12b40) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../generic/tkMain.c:378 #25 0x00005555555aeb49 in main (argc=1, argv=0x7fffffffdf78) at /home/francois/Documents/tcltk/fossil/tkchat/tk9.0.0/unix/../unix/tkAppInit.c:115