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[java] DataflowAnomalyAnalysis: DD false positive for arrays #1251

cobratbq opened this Issue Jul 21, 2018 · 0 comments


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cobratbq commented Jul 21, 2018

Affects PMD Version: pmd 6.5.0 executed through maven-pmd-plugin 3.8

Rule: DataflowAnomalyAnalysis (DD false positive)


The variable 'msg2', which is declared as an array of BigInteger, is treated like a plain variable being assigned multiple times, while in fact assignments are to specific indexes of the array.

Code Sample demonstrating the issue:

final BigInteger[] msg2 = new BigInteger[11];
msg2[0] = G1.modPow(x2, OtrCryptoEngine.MODULUS);
BigInteger[] res = proofKnowLog(x2, 3);
msg2[1] = res[0];
msg2[2] = res[1];
// etc.

Running PMD through: Maven

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