The easiest way to solve this problem is to create an anonymous hash and push it onto the array: push @AoH, { %globHash }; The other way to solve this problem is to push a reference to a lexical that goes out of scope. For example:

while (<>) {
  my %hash = split;
  push @AoH, \%hash;
}
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Each iteration of the loop will create a new instance of %hash, while the old instances will be accessible through the references in @AoH.