You are calculating the MD5 of a reference, not the data.

my $foo = $$data;
#         ^
#         |

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Therefore, if you run a simple script several times in a row, the result is likely to be the same. In a complicate one, the reference to that variable may more easily change. Thus, the varying results you get.

In reply to Re: MD5 Peculiarities by cchampion
in thread MD5 Peculiarities by skazat

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