Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7191f26 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) backtrace
#0  0x00007ffff7191f26 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x000000000043cc50 in skin_element_callback (element=0x7b7120, 
    data=0x7b7260)
    at /home/fred/rockbox.stock/apps/gui/skin_engine/skin_parser.c:1851
#2  0x00000000004971a6 in skin_parse_tag (element=0x7b7120, 
    document=0x7fffffffdb00)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:789
#3  0x00000000004962ad in skin_parse_line_optional (document=0x7fffffffdb80, 
    conditional=1)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:347
#4  0x0000000000497950 in skin_parse_code_as_arg (document=0x7fffffffdb80)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:1102
#5  0x00000000004976ab in skin_parse_conditional (element=0x7b706c, 
    document=0x7fffffffdbe0)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:992
#6  0x0000000000496264 in skin_parse_line_optional (document=0x7fffffffdc48, 
    conditional=0)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:342
#7  0x0000000000496097 in skin_parse_line (document=0x7fffffffdc48)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:259
#8  0x0000000000495fbf in skin_parse_viewport (document=0x7fffffffdcb0)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:231
#9  0x0000000000495c84 in skin_parse (
    document=0x6fe6a0 '#' <repeats 118 times>, "\n#", '\t' <repeats 14 times>, "     #\n#\t\t      #######     ######     ######   ####  #### #######"..., 
    cb=0x43cbf1 <skin_element_callback>, cb_data=0x7b7260)
    at /home/fred/rockbox.stock/lib/skin_parser/skin_parser.c:103
#10 0x000000000043d2e4 in skin_data_load (screen=SCREEN_MAIN, 
    wps_data=0x7b7260, buf=0x7fffffffdef0 "/.rockbox/wps/iLike.fms", 
    isfile=true)
    at /home/fred/rockbox.stock/apps/gui/skin_engine/skin_parser.c:2128