(gdb) bt
#0  0xb6f2aff7 in __GI__IO_file_stat () from /usr/lib/libc.so.6
#1  0xb6f1f92c in __GI__IO_file_doallocate () from /usr/lib/libc.so.6
#2  0xb6f2cfc5 in __GI__IO_doallocbuf () from /usr/lib/libc.so.6
#3  0xb6f2c1bd in __GI__IO_file_underflow () from /usr/lib/libc.so.6
#4  0xb6f2d019 in __GI__IO_default_uflow () from /usr/lib/libc.so.6
#5  0xb6f2ce4b in __uflow () from /usr/lib/libc.so.6
#6  0xb6f212da in __GI__IO_getline_info () from /usr/lib/libc.so.6
#7  0xb6f21417 in __GI__IO_getline () from /usr/lib/libc.so.6
#8  0xb6f2029b in fgets () from /usr/lib/libc.so.6
#9  0xb6770f78 in ?? () from /usr/lib/libXcursor.so.1
#10 0xb67713db in ?? () from /usr/lib/libXcursor.so.1
#11 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#12 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#13 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#14 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#15 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#16 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#17 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#18 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#19 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#20 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#21 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#22 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#23 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#24 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#25 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#26 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#27 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#28 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#29 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#30 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#31 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#32 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#33 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#34 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#35 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#36 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#37 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#38 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#39 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#40 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#41 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#42 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#43 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#44 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#45 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#46 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#47 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#48 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#49 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#50 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#51 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#52 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#53 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#54 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#55 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#56 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#57 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#58 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#59 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#60 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#61 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#62 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#63 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#64 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#65 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#66 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#67 0xb6771437 in ?? () from /usr/lib/libXcursor.so.1
#68 0xb6771437 in ?? () from /usr/lib/libXcursor.so.