cnc-lathe@cnc-lathe:~$ gdb /home/cnc-lathe/emc2/bin/halui 4787
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This GDB was configured as "i486-linux-gnu"...Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so .1".
Attaching to program: /home/cnc-lathe/emc2/bin/halui, process 4787
Reading symbols from /home/cnc-lathe/emc2/lib/libnml.so...done.
Loaded symbols for /home/cnc-lathe/emc2/lib/libnml.so
Reading symbols from /home/cnc-lathe/emc2/lib/libemchal.so...done.
Loaded symbols for /home/cnc-lathe/emc2/lib/libemchal.so
Reading symbols from /usr/lib/libstdc++.so.6...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/tls/i686/cmov/libm.so.6...done.
Loaded symbols for /lib/tls/i686/cmov/libm.so.6
Reading symbols from /lib/libgcc_s.so.1...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /lib/tls/i686/cmov/libc.so.6...done.
Loaded symbols for /lib/tls/i686/cmov/libc.so.6
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
0xffffe410 in __kernel_vsyscall ()
(gdb) where 5
#0 0xffffe410 in __kernel_vsyscall ()
#1 0xb7d8108d in select () from /lib/tls/i686/cmov/libc.so.6
#2 0xb7f22884 in esleep (seconds_to_sleep=0.10000000000000001) at libnml/os_intf/_timer.c:95
#3 0x08049366 in emcCommandWaitReceived (serial_number=87) at emc/usr_intf/halui.cc:523
#4 0x0804a570 in sendFeedOverride (override=0.2500000037252903) at emc/usr_intf/halui.cc:1437
(More stack frames follow...)
(gdb)