Can anyone explain the following behaviour?

#!/usr/bin/perl

sub extract {
   my($i,$y) = @_;
   print "Unpack $i: " . (join ',',unpack('w*',$y)) . "\n";
}

$x=4294967296;

foreach(1..9) {
   $z=pack('w*',$x);
   &extract($_,$z);
}

[download]
Output:

Unpack 1: 2082839,9,0,0,0
Unpack 2: 34126102543,0,0,0
Unpack 3: 34126037007,0,0,0
Unpack 4: 34126037007,0,0,0
Unpack 5: 34126037007,0,0,0
Unpack 6: 34126037007,0,0,0
Unpack 7: 34126037007,0,0,0
Unpack 8: 34126037007,0,0,0
Unpack 9: 34126037007,0,0,0
This only happens once $x >= 4294967296
Thanks.

In reply to Unpack weirdness by sparky8342

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