./allexec64 will exec ./allexec32
program exec-ed: ./allexec32
child exited
program exec-ed: ./allexec32 constant_arg1 constant_arg2
child exited
program exec-ed: ./allexec32
child exited
./allexec64 will exec ./allexec64
program exec-ed: ./allexec64
child exited
program exec-ed: ./allexec64 constant_arg1 constant_arg2
child exited
program exec-ed: ./allexec64
child exited