Comment 4 for bug 1239381

backtrace shows a 'free(): invalid next size (fast)' somewhere below libpango called from unity::dash::ResultRendererTile::LoadText

#3 0x00007f7a095a9996 in malloc_printerr (ptr=0x54ab030, str=0x7f7a096b08e0 "free(): invalid next size (fast)", action=3)
 at malloc.c:4923
        buf = "00000000054ab030"
        cp = <optimised out>
#4 _int_free (av=<optimised out>, p=0x54ab020, have_lock=0) at malloc.c:3779
        size = <optimised out>
        fb = <optimised out>
        nextchunk = <optimised out>
        nextsize = <optimised out>
        nextinuse = <optimised out>
        prevsize = <optimised out>
        bck = <optimised out>
        fwd = <optimised out>
        errstr = <optimised out>
        locked = <optimised out>
        __func__ = "_int_free"
#5 0x00007f79e6b7f407 in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
No symbol table info available.
#6 0x00007f79e6b7f6f8 in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
No symbol table info available.
#7 0x00007f79e6b9230a in ?? () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
No symbol table info available.
#8 0x00007f79e6b94720 in pango_layout_get_iter () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
No symbol table info available.
#9 0x00007f79e6b9987c in pango_renderer_draw_layout () from /usr/lib/x86_64-linux-gnu/libpango-1.0.so.0
No symbol table info available.
#10 0x00007f79e6dc525a in ?? () from /usr/lib/x86_64-linux-gnu/libpangocairo-1.0.so.0
No symbol table info available.
#11 0x00007f79e7ff71ed in unity::dash::ResultRendererTile::LoadText(unity::dash::Result const&) () from /usr/lib/compiz/li
bunityshell.so