mirror of https://github.com/python/cpython
Add a final permutation step to the tuple hash function.
Prevents a collision pattern that occurs with nested tuples. (Yitz Gale provided code that repeatably demonstrated the weakness.)
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@ -190,6 +190,7 @@ Gyro Funch
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Peter Funk
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Geoff Furnish
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Lele Gaifax
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Yitzchak Gale
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Raymund Galvin
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Nitin Ganatra
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Fred Gansevles
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@ -280,6 +280,7 @@ tuplehash(PyTupleObject *v)
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x = (x ^ y) * mult;
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mult += 82520L + len + len;
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}
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x += 97531L;
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if (x == -1)
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x = -2;
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return x;
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