make my life hard

% cat Makefile
# = ^ . ^ =
_:
        make -f $(PWD)/Makefile &


% make


--
  = ^ . ^ =

StackOverflow.java

% cat StackOverflow.java

class StackOverflow

{

public static void main(String[] args)

{

StackOverflow.main(args);

}

}

% javac StackOverflow.java && java StackOverflow 2>&1 | vim -

1:Exception in thread "main" java.lang.StackOverflowError

2: at StackOverflow.main(StackOverflow.java:5)

3: at StackOverflow.main(StackOverflow.java:5)

...

1025: at StackOverflow.main(StackOverflow.java:5)