I got an assertion violation in a build of the latest inkscape:

     $ inkscape
     Assertion failure: mark.c:642
     assertion failure
     Aborted (core dumped)
     134 $

No luck googling this error text  as far as I could tell.  I'm not even
sure which package mark.c is in, it doesn't show up anywhere in
inkscape or any of the many dependencies I needed to build.

The inkscape link ended up looking like this:

 $ ldd $(which inkscape)
    linux-gate.so.1 =>  (0xb7fbb000)
    libgtkmm-2.4.so.1 => /home/bkerin/local/lib/libgtkmm-2.4.so.1 (0xb7c68000)
    libatkmm-1.6.so.1 => /home/bkerin/local/lib/libatkmm-1.6.so.1 (0xb7c23000)
    libgdkmm-2.4.so.1 => /home/bkerin/local/lib/libgdkmm-2.4.so.1 (0xb7bd9000)
    libgiomm-2.4.so.1 => /home/bkerin/local/lib/libgiomm-2.4.so.1 (0xb7b62000)
    libpangomm-1.4.so.1 => /home/bkerin/local/lib/libpangomm-1.4.so.1 (0xb7b34000)
    libglibmm-2.4.so.1 => /home/bkerin/local/lib/libglibmm-2.4.so.1 (0xb7adb000)
    libcairomm-1.0.so.1 => /home/bkerin/local/lib/libcairomm-1.0.so.1 (0xb7aba000)
    libgtk-x11-2.0.so.0 => /home/bkerin/local/lib/libgtk-x11-2.0.so.0 (0xb76fd000)
    libgdk-x11-2.0.so.0 => /home/bkerin/local/lib/libgdk-x11-2.0.so.0 (0xb766a000)
    libatk-1.0.so.0 => /home/bkerin/local/lib/libatk-1.0.so.0 (0xb7650000)
    libgio-2.0.so.0 => /home/bkerin/local/lib/libgio-2.0.so.0 (0xb75b7000)
    libpangoft2-1.0.so.0 => /home/bkerin/local/lib/libpangoft2-1.0.so.0 (0xb7592000)
    libgdk_pixbuf-2.0.so.0 => /home/bkerin/local/lib/libgdk_pixbuf-2.0.so.0 (0xb7578000)
    libpangocairo-1.0.so.0 => /home/bkerin/local/lib/libpangocairo-1.0.so.0 (0xb756d000)
    libpango-1.0.so.0 => /home/bkerin/local/lib/libpango-1.0.so.0 (0xb752a000)
    libfreetype.so.6 => /home/bkerin/local/lib/libfreetype.so.6 (0xb74b9000)
    libz.so.1 => /usr/lib/libz.so.1 (0xb748a000)
    libfontconfig.so.1 => /home/bkerin/local/lib/libfontconfig.so.1 (0xb745f000)
    libgobject-2.0.so.0 => /home/bkerin/local/lib/libgobject-2.0.so.0 (0xb7422000)
    libgmodule-2.0.so.0 => /home/bkerin/local/lib/libgmodule-2.0.so.0 (0xb741f000)
    libxslt.so.1 => /usr/lib/libxslt.so.1 (0xb73e9000)
    libxml2.so.2 => /usr/lib/libxml2.so.2 (0xb72b0000)
    libcairo.so.2 => /home/bkerin/local/lib/libcairo.so.2 (0xb7241000)
    libsigc-2.0.so.0 => /usr/lib/libsigc-2.0.so.0 (0xb723b000)
    libgthread-2.0.so.0 => /home/bkerin/local/lib/libgthread-2.0.so.0 (0xb7237000)
    libglib-2.0.so.0 => /home/bkerin/local/lib/libglib-2.0.so.0 (0xb715f000)
    libpng12.so.0 => /usr/lib/libpng12.so.0 (0xb713b000)
    libgsl.so.0 => /home/bkerin/local/lib/libgsl.so.0 (0xb6fad000)
    libgslcblas.so.0 => /home/bkerin/local/lib/libgslcblas.so.0 (0xb6f7b000)
    libgomp.so.1 => /usr/lib/libgomp.so.1 (0xb6f74000)
    libpopt.so.0 => /lib/libpopt.so.0 (0xb6f6b000)
    libgnomevfs-2.so.0 => /usr/lib/libgnomevfs-2.so.0 (0xb6f10000)
    libgconf-2.so.4 => /usr/lib/libgconf-2.so.4 (0xb6ede000)
    libgc.so.1 => /home/bkerin/local/lib/libgc.so.1 (0xb6e9f000)
    liblcms.so.1 => /usr/lib/liblcms.so.1 (0xb6e6b000)
    libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb6d7d000)
    libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb6d57000)
    libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb6d4a000)
    libpthread.so.0 => /lib/i686/cmov/libpthread.so.0 (0xb6d31000)
    libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb6bd5000)
    libdl.so.2 => /lib/i686/cmov/libdl.so.2 (0xb6bd1000)
    libX11.so.6 => /usr/lib/libX11.so.6 (0xb6ae2000)
    libresolv.so.2 => /lib/i686/cmov/libresolv.so.2 (0xb6ace000)
    libselinux.so.1 => /lib/libselinux.so.1 (0xb6ab5000)
    librt.so.19 => /home/bkerin/local/lib/librt.so.19 (0xa829c000)
    libbn.so.19 => /home/bkerin/local/lib/libbn.so.19 (0xa8246000)
    libbu.so.19 => /home/bkerin/local/lib/libbu.so.19 (0xa8205000)
    libtcl8.5.so => /home/bkerin/local/lib/libtcl8.5.so (0xa80de000)
    libsysv.so.19 => /home/bkerin/local/lib/libsysv.so.19 (0xa80dc000)
    libopenNURBS.so.0 => /home/bkerin/local/lib/libopenNURBS.so.0 (0xa7d3f000)
    libpixman-1.so.0 => /home/bkerin/local/lib/libpixman-1.so.0 (0xa7d08000)
    libexpat.so.1 => /usr/lib/libexpat.so.1 (0xa7ce2000)
    libXrender.so.1 => /usr/lib/libXrender.so.1 (0xa7cd9000)
    libXext.so.6 => /usr/lib/libXext.so.6 (0xa7cca000)
    libXinerama.so.1 => /usr/lib/libXinerama.so.1 (0xa7cc7000)
    libXcursor.so.1 => /usr/lib/libXcursor.so.1 (0xa7cbe000)
    libXcomposite.so.1 => /usr/lib/libXcomposite.so.1 (0xa7cbb000)
    libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0xa7cb8000)
    libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0xa7cb3000)
    librt.so.1 => /lib/i686/cmov/librt.so.1 (0xa7ca9000)
    libdbus-glib-1.so.2 => /usr/lib/libdbus-glib-1.so.2 (0xa7c8d000)
    libdbus-1.so.3 => /usr/lib/libdbus-1.so.3 (0xa7c55000)
    libgnutls.so.26 => /usr/lib/libgnutls.so.26 (0xa7bb7000)
    libavahi-glib.so.1 => /usr/lib/libavahi-glib.so.1 (0xa7bb4000)
    libavahi-common.so.3 => /usr/lib/libavahi-common.so.3 (0xa7ba8000)
    libavahi-client.so.3 => /usr/lib/libavahi-client.so.3 (0xa7b98000)
    libutil.so.1 => /lib/i686/cmov/libutil.so.1 (0xa7b94000)
    libORBit-2.so.0 => /usr/lib/libORBit-2.so.0 (0xa7b40000)
    /lib/ld-linux.so.2 (0xb7fbc000)
    libxcb-xlib.so.0 => /usr/lib/libxcb-xlib.so.0 (0xa7b3e000)
    libxcb.so.1 => /usr/lib/libxcb.so.1 (0xa7b26000)
    libXau.so.6 => /usr/lib/libXau.so.6 (0xa7b23000)
    libnsl.so.1 => /lib/i686/cmov/libnsl.so.1 (0xa7b09000)
    libtasn1.so.3 => /usr/lib/libtasn1.so.3 (0xa7af9000)
    libgpg-error.so.0 => /home/bkerin/local/lib/libgpg-error.so.0 (0xa7af5000)
    libgcrypt.so.11 => /usr/lib/libgcrypt.so.11 (0xa7a8d000)
    libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xa7a88000)

Britton