c:\test>\perl32\bin\perl.exe -wle"print $$, ':',  $p=system 1, 'perl -le\"print qq[??$$]; sleep 10; print q[exiting]\"'; print waitpid $p, 1 while sleep 1"
13960:14028
??13984
0
0
0
0
0
0
0
0
0
0
exiting
14028
-1
-1
-1
Terminating on signal SIGINT(2)