gdb catch a signal

(gdb) help catch
Set catchpoints to catch events.

List of catch subcommands:

catch assert -- Catch failed Ada assertions
catch catch -- Catch an exception
catch exception -- Catch Ada exceptions
catch exec -- Catch calls to exec
catch fork -- Catch calls to fork
catch syscall -- Catch system calls by their names and/or numbers
catch throw -- Catch an exception
catch vfork -- Catch calls to vfork

#gdb --version
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-50.el6)