If $g is autovivified when it is on the right side of equal sign I just don't get why this throws exception. 
my $a;
my @b = @$a;

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and why this one works smoothly 
my $a;
foreach (@$a) {
  print "$_\n";
}

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In reply to Re^6: Array dereference in foreach() by pme
in thread Array dereference in foreach() by pme

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