Comment 2 for bug 111278

The PDF is attached. Just scroll down couple of pages and it crashes.

The backtrace (thanks for the tip for finding the debugging symbols):

#0 0xb79e3dec in free () from /lib/tls/i686/cmov/libc.so.6
#1 0xb7ba2d11 in operator delete () from /usr/lib/libstdc++.so.6
#2 0xb7ba2d6d in operator delete[] () from /usr/lib/libstdc++.so.6
#3 0x0809771f in Object::free (this=0xbfe371e0) at Object.cc:112
#4 0x080598fa in Gfx::go (this=0x8242960, topLevel=1) at Gfx.cc:569
#5 0x08059c97 in Gfx::display (this=0x8242960, obj=0xbfe37334, topLevel=1)
    at Gfx.cc:538
#6 0x08099aad in Page::displaySlice (this=0x81c9560, out=0x81a6580, hDPI=90,
    vDPI=90, rotate=0, useMediaBox=0, crop=1, sliceX=0, sliceY=0, sliceW=765,
    sliceH=990, links=0x8234fa8, catalog=0x81c51c8, abortCheckCbk=0,
    abortCheckCbkData=0x0) at Page.cc:317
#7 0x0809d893 in PDFCore::needTile (this=0x81a5f40, page=0x8192560, x=0, y=0)
    at PDFCore.cc:793
#8 0x080a0547 in PDFCore::update (this=0x81a5f40, topPageA=4, scrollXA=0,
    scrollYA=0, zoomA=125, rotateA=0, force=0, addToHist=1) at PDFCore.cc:617
#9 0x080cc8f7 in XPDFCore::update (this=0x81a5f40, topPageA=4, scrollXA=0,
    scrollYA=0, zoomA=125, rotateA=0, force=0, addToHist=1) at XPDFCore.cc:308
#10 0x0809ee9f in PDFCore::gotoNextPage (this=0x1, inc=1, top=1) at PDFCore.cc:829
#11 0x080cc880 in XPDFCore::gotoNextPage (this=0x81a5f40, inc=1, top=1)
    at XPDFCore.cc:335
#12 0x080cf0a8 in XPDFCore::inputCbk (widget=0x81af9d0, ptr=0x81a5f40,
    callData=0xbfe37608) at XPDFCore.cc:1094
#13 0xb7d2140b in XtCallCallbackList () from /usr/lib/libXt.so.6
#14 0xb7dce250 in _XmDrawingAreaInput () from /usr/lib/libXm.so.2
#15 0xb7d58481 in ?? () from /usr/lib/libXt.so.6
#16 0x081af9d0 in ?? ()
#17 0xbfe37ab8 in ?? ()
#18 0x00000000 in ?? ()

Seems like a double free.