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Compass/ROSE can detect simple violations of this rule. It needs to examine each expression and make sure that no variable is modified twice in the expression. Also no variable is modified once, and read elsewhere, with the single exception that a variable may appear on both the left and right of an assignment operator.
The Coverity Prevent Version 5.0 EVALUATION_ORDER checker can detect the specific instance where Statement contains multiple side-effects on the same value with an undefined evaluation order because with different compiler flags or different compilers or platforms, the statement may behave differently.
Related Vulnerabilities
Search for vulnerabilities resulting from the violation of this rule on the CERT website.
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