#0  0x00007f0b62d6ce2d in FcPatternObjectPosition (p=p@entry=0x185e9c0, object=21) at fcpat.c:315
        low = 0
        high = 25641247
        mid = 12820623
        c = 1
        elts = 0x188e580
#1  0x00007f0b62d6d1a9 in FcPatternObjectFindElt (p=0x185e9c0, object=<optimized out>) at fcpat.c:331
        i = <optimized out>
#2  0x00007f0b62d6d890 in FcPatternObjectGet (p=<optimized out>, object=<optimized out>, id=id@entry=0, v=v@entry=0x7f0b52a64bd0) at fcpat.c:725
        e = <optimized out>
        l = <optimized out>
#3  0x00007f0b62d6dad0 in FcPatternObjectGetString (p=<optimized out>, object=<optimized out>, id=id@entry=0, s=s@entry=0x7f0b52a64c08) at fcpat.c:809
        v = {type = FcTypeInteger, u = {s = 0x8 <Address 0x8 out of bounds>, i = 8, b = 8, d = 3.9525251667299724e-323, m = 0x8, c = 0x8, f = 0x8, l = 0x8}}
        r = <optimized out>
#4  0x00007f0b62d6db44 in IA__FcPatternGetString (p=<optimized out>, object=object@entry=0x40b0aa "file", id=id@entry=0, s=s@entry=0x7f0b52a64c08) at fcpat.c:822
No locals.
#5  0x0000000000406989 in load_font_infos (job=0x186d8c0, cancellable=<optimized out>, user_data=0x15ad980) at font-model.c:366
        font_info = <optimized out>
        file = 0x1868ca0 "/usr/share/fonts/opentype/freefont/FreeMonoBold.otf"
        font_name = <optimized out>
        self = 0x15ad980
        data = <optimized out>
        i = <optimized out>
        font_infos = <optimized out>
#6  0x00007f0b61916756 in io_job_thread (data=0x186d8c0, user_data=<optimized out>) at /build/buildd/glib2.0-2.33.12/./gio/gioscheduler.c:162
        job = 0x186d8c0
        result = <optimized out>
#7  0x00007f0b60c7c162 in g_thread_pool_thread_proxy (data=<optimized out>) at /build/buildd/glib2.0-2.33.12/./glib/gthreadpool.c:309
        task = 0x186d8c0
        pool = 0x17fbba0
#8  0x00007f0b60c7b915 in g_thread_proxy (data=0x17c3000) at /build/buildd/glib2.0-2.33.12/./glib/gthread.c:797
        thread = 0x17c3000
#9  0x00007f0b5f67ae9a in start_thread (arg=0x7f0b52a65700) at pthread_create.c:308
        __res = <optimized out>
        pd = 0x7f0b52a65700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, -1556327558200261964, 140736771648000, 139686608001472, 0, 3, 1472805826139947700, 1472798693363188404}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0x00007f0b6094539d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#11 0x0000000000000000 in ?? ()
No symbol table info available.