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Performing bit manipulation and arithmetic operations on the same variable obscures the programmer's intentions and reduces readability. This, in turn, makes it more difficult for a security auditor or maintainer to determine which checks must be performed to eliminate security flaws and ensure data integrity. For instance, overflow checks are critical for numeric types that undergo arithmetic operations, but less critical for numeric types that undergo bitwise operations.

Recommendation Rule

Severity

Likelihood

Remediation Cost

Priority

Level

NUM01-J

medium

unlikely

medium

P4

L3

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[[Steele 1977

AA. Bibliography#Steele 1977]]

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