BackTrace with debug symbols : $ gdb /usr/bin/xpdf.real GNU gdb (GDB) 7.5-ubuntu Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /usr/bin/xpdf.real...Reading symbols from /usr/lib/debug/.build-id/86/6b0cb196d8769dee9568189352a597d0d91ca4.debug...done. done. (gdb) run cerfa_13754-02.pdf Starting program: /usr/bin/xpdf.real cerfa_13754-02.pdf ***** MediaBox = ll:0,0 ur:612,792 ***** CropBox = ll:0,0 ur:612,792 ***** Rotate = 0 BT BDC /Content << /MCID 0 >> marked content: Content << /MCID 0 >> rg 0 0 0 ri /RelativeColorimetric Tf /T1_0 1 font: tag=T1_0 name='Helvetica' 1 Tm 10 0 0 10 72 712.72 Tj (To view the full contents of this document, you need a later version of the PDF viewer. You can upgrade ) Program received signal SIGSEGV, Segmentation fault. 0x00007ffff777171c in GooHash::find(GooString*, int*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 (gdb) bt #0 0x00007ffff777171c in GooHash::find(GooString*, int*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #1 0x00007ffff77718ce in GooHash::lookup(GooString*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #2 0x00007ffff771dbb3 in GlobalParams::findFontFile(GooString*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #3 0x00007ffff770499c in GfxFont::locateFont(XRef*, bool) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #4 0x00007ffff76b2eb5 in SplashOutputDev::doUpdateFont(GfxState*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #5 0x00007ffff76b3562 in SplashOutputDev::drawChar(GfxState*, double, double, double, double, double, double, unsigned int, int, unsigned int*, int) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #6 0x00007ffff76ff540 in Gfx::doShowText(GooString*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #7 0x00007ffff77004f9 in Gfx::opShowText(Object*, int) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #8 0x00007ffff76f89a4 in Gfx::go(bool) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #9 0x00007ffff76f8e10 in Gfx::display(Object*, bool) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #10 0x00007ffff77391d4 in Page::displaySlice(OutputDev*, double, double, int, bool, bool, int, int, int, int, bool, bool (*)(void*), void*, bool (*)(Annot*, void*), void*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.28 #11 0x0000555555588daa in PDFCore::needTile (this=0x555555855b40, page=0x55555584d380, x=0, y=0) at build/PDFCore.cc:896 #12 0x000055555558c560 in PDFCore::update (this=0x555555855b40, topPageA=, scrollXA=, scrollYA=, zoomA=0, rotateA=, force=, addToHist=true, adjustScrollX=true) at build/PDFCore.cc:718 #13 0x000055555558ef86 in XPDFCore::update (this=0x555555855b40, topPageA=, scrollXA=, scrollYA=, zoomA=, rotateA=, force=, addToHist=true, adjustScrollX=true) at build/XPDFCore.cc:290 #14 0x0000555555586bd2 in PDFCore::displayPage (this=, topPageA=, zoomA=, rotateA=, scrollToTop=, addToHist=) at build/PDFCore.cc:301 #15 0x000055555559c892 in displayPage (addToHist=true, scrollToTop=true, rotateA=, zoomA=, pageA=, this=0x5555558332a0) at build/XPDFViewer.cc:476 #16 XPDFViewer::XPDFViewer (this=0x5555558332a0, appA=, fileName=0x5555558300e0, pageA=, destName=0x0, fullScreen=, ownerPassword=0x0, userPassword=0x0) at build/XPDFViewer.cc:315 #17 0x000055555558d453 in XPDFApp::open (this=0x5555557fd290, fileName=0x5555558300e0, page=1, ownerPassword=0x0, userPassword=0x0) at build/XPDFApp.cc:228 #18 0x000055555557e11a in main (argc=2, argv=) at build/xpdf.cc:313