The following code is not able to trap a signal (when i press ctrl-c). It doesnt call the subroutine sig_handler.

1. File a.pl call b.pl which runs in an infinite loop, as soon as i run the command=>
perl a.pl
I get "In B" as output and it continues in infinite loop.
However when i press ctrl-c , "In A" is printed and program exits.
The statement "Sig trapped" is not printed at all.
a.pl : 


$SIG{INT}=\&sig_handler;
system("perl b.pl");
print "In A\n";
sub sig_handler
{
    printf("Sig trapped.\n");
}

[download]

b.pl: 
print "In B\n";
for(;;)
{
}

[download]
I m using linux and perlv5.8.8.

. Please suggest a solution that will work on windows as well as linux.
The code is working on windows using Active perl v5.8.8.
I mean i get the message "Sig trapped" on windows.

In reply to signal handling by debugger

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