(gdb) bt full
#0  0xb6f4bca7 in SQLDescribeCol () from /usr/lib/libodbc.so.1
No symbol table info available.
#1  0xb6ecc711 in acf_odbc_read (chan=0x82f3718, cmd=0xb61c9c60 "MINIXEL_ROUTING",
    s=0xb61c9c70 "S208-1192397972.5908", buf=0xb61c9d40 "", len=4096)
    at func_odbc.c:349
        res1 = Variable "res1" is not available.
(gdb)