Building the package with debug symbols gives the following stack trace:
(gdb) bt #0 0xb7e016ad in fclose () from /lib/tls/i686/cmov/libc.so.6 #1 0x0804bf5c in main (argc=1, argv=0xbfc0fe64) at isoinfo.c:1255
Building the package with debug symbols gives the following stack trace:
(gdb) bt i686/cmov/ libc.so. 6
#0 0xb7e016ad in fclose () from /lib/tls/
#1 0x0804bf5c in main (argc=1, argv=0xbfc0fe64) at isoinfo.c:1255