Program received signal SIGSEGV, Segmentation fault.

TkBTreeLinesTo (textPtr=0x0, linePtr=0xc04ee0) at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextBTree.c:1967
1967        for (linePtr2 = nodePtr->children.linePtr; linePtr2 != linePtr;

(gdb) bt

#0  TkBTreeLinesTo (textPtr=0x0, linePtr=0xc04ee0) at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextBTree.c:1967
#1  0x00007ffff7b37f48 in TkTextIndexCmp (index1Ptr=0xc3c560, index2Ptr=0x7fffffffc680) at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextIndex.c:1115
#2  0x00007ffff7b308d0 in TextRedrawTag (textPtr=0x7c6a90, index1Ptr=0x7fffffffc680, index2Ptr=0x7fffffffc660, tagPtr=0x7c6e90, withTag=1) at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextDisp.c:4800
#3  0x00007ffff7b30778 in TkTextRedrawTag (sharedTextPtr=0x7c9290, textPtr=0x7c6a90, index1Ptr=0x7fffffffc680, index2Ptr=0x7fffffffc660, tagPtr=0x7c6e90, withTag=1)
    at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextDisp.c:4734
#4  0x00007ffff7b3b8a4 in TkTextTagCmd (textPtr=0x7c6a90, interp=0x61d450, objc=6, objv=0x622650) at /home/aspect/tcl/fossils/tk/unix/../generic/tkTextTag.c:199
#5  0x00007ffff7b1cbe1 in TextWidgetObjCmd (clientData=0x7c6a90, interp=0x61d450, objc=6, objv=0x622650) at /home/aspect/tcl/fossils/tk/unix/../generic/tkText.c:1510
#6  0x00007ffff764cb6c in Dispatch (data=0xc1eba8, interp=0x61d450, result=0) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4353
#7  0x00007ffff764cbf9 in TclNRRunCallbacks (interp=0x61d450, result=0, rootPtr=0xc1e210) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4386
#8  0x00007ffff764c365 in Tcl_EvalObjv (interp=0x61d450, objc=5, objv=0x622220, flags=2097168) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4116
#9  0x00007ffff764eae1 in TclEvalEx (interp=0x61d450, script=0x7fffffffcce0 "tablelist::activeTrace .t data activeRow w", numBytes=42, flags=0, line=1, clNextOuter=0x0,
    outerScript=0x7fffffffcce0 "tablelist::activeTrace .t data activeRow w") at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:5255
#10 0x00007ffff764de93 in Tcl_EvalEx (interp=0x61d450, script=0x7fffffffcce0 "tablelist::activeTrace .t data activeRow w", numBytes=42, flags=0) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4920
#11 0x00007ffff77a1f3a in TraceVarProc (clientData=0xc003b0, interp=0x61d450, name1=0x8ba1d0 "data", name2=0xc192e0 "activeRow", flags=32) at /home/aspect/tcl/fossils/tcl/generic/tclTrace.c:2050
#12 0x00007ffff77a29bf in TclCallVarTraces (iPtr=0x61d450, arrayPtr=0x98a600, varPtr=0x98aa80, part1=0x8ba1d0 "data", part2=0xc192e0 "activeRow", flags=32, leaveErrMsg=512)
    at /home/aspect/tcl/fossils/tcl/generic/tclTrace.c:2678
#13 0x00007ffff77a2559 in TclObjCallVarTraces (iPtr=0x61d450, arrayPtr=0x98a600, varPtr=0x98aa80, part1Ptr=0x705750, part2Ptr=0xc1bf00, flags=32, leaveErrMsg=512, index=4)
    at /home/aspect/tcl/fossils/tcl/generic/tclTrace.c:2520
#14 0x00007ffff77abf0b in TclPtrSetVar (interp=0x61d450, varPtr=0x98aa80, arrayPtr=0x98a600, part1Ptr=0x0, part2Ptr=0xc1bf00, newValuePtr=0xc1e9f0, flags=512, index=4)
    at /home/aspect/tcl/fossils/tcl/generic/tclVar.c:1874
#15 0x00007ffff772151f in TEBCresume (data=0xc1e908, interp=0x61d450, result=0) at /home/aspect/tcl/fossils/tcl/generic/tclExecute.c:3567
#16 0x00007ffff764cbf9 in TclNRRunCallbacks (interp=0x61d450, result=0, rootPtr=0x0) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4386
#17 0x00007ffff764c365 in Tcl_EvalObjv (interp=0x61d450, objc=4, objv=0x621740, flags=2097168) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:4116
#18 0x00007ffff764eae1 in TclEvalEx (interp=0x61d450,
    script=0x7265d0 "set ::argv0 tclsh\nlappend auto_path ../fvv-linux-x86_64.vfs/lib\npackage require tablelist\nnamespace import tablelist::tablelist\n\ntablelist .t -columns {0 text}\npack .t\n\nset N 7\n\nfor {set i 1} {$i < $:"..., numBytes=321, flags=0, line=20, clNextOuter=0x0,
    outerScript=0x7265d0 "set ::argv0 tclsh\nlappend auto_path ../fvv-linux-x86_64.vfs/lib\npackage require tablelist\nnamespace import tablelist::tablelist\n\ntablelist .t -columns {0 text}\npack .t\n\nset N 7\n\nfor {set i 1} {$i < $:"...) at /home/aspect/tcl/fossils/tcl/generic/tclBasic.c:5255
#19 0x00007ffff7762de9 in Tcl_FSEvalFileEx (interp=0x61d450, pathPtr=0x61d280, encodingName=0x0) at /home/aspect/tcl/fossils/tcl/generic/tclIOUtil.c:1827
#20 0x00007ffff7a938a9 in Tk_MainEx (argc=-1, argv=0x7fffffffdf08, appInitProc=0x400afb <Tcl_AppInit>, interp=0x61d450) at /home/aspect/tcl/fossils/tk/unix/../generic/tkMain.c:333
#21 0x0000000000400af4 in main (argc=2, argv=0x7fffffffdef8) at /home/aspect/tcl/fossils/tk/unix/../unix/tkAppInit.c:78

(gdb) p linePtr

$6 = (TkTextLine *) 0xc04ee0

(gdb) p linePtr->parentPtr

$7 = (struct Node *) 0x667463656c65732d

(gdb) p nodePtr

$8 = (Node *) 0x667463656c65732d

(gdb) p nodePtr->children

Cannot access memory at address 0x667463656c65734d

(gdb) p (char*)linePtr

$9 = 0xc04ee0 "-selectforeground"
