You specified a prototype on a function (ReadDataInHash) that is called before it is declared.

Since the prototype is wrong and unnecessary, change
sub ReadDataInHash() { ... }
to
sub ReadDataInHash { ... }

In reply to Re: Error: "called too early to check prototype" and is word search using nested hash optimal? by ikegami
in thread Error: "called too early to check prototype" and is word search using nested hash optimal? by newbio

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