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Evaluation of an expression may produce side effects. At specific points during execution called , known as sequence points, all side effects of previous evaluations have completed, and no side effects of subsequent evaluations have yet taken place.

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Search for vulnerabilities resulting from the violation of this rule on the CERT website.

Related Guidelines

CERT C++ Secure Coding Standard: EXP30-CPP. Do not depend on order of evaluation between sequence points

Java The CERT Oracle Secure Coding Standard for Java: EXP09-J. Do not depend on operator precedence while using expressions containing side-effects

Bibliography

Wiki Markup\[[ISO/IEC 9899:1999|AA. Bibliography#ISO/IEC 9899-1999]\] Section 5.1.2.3, "Program execution," Section 6.5, "Expressions," and Annex C, "Sequence points" \[[

ISO/IEC PDTR 24772|AA. Bibliography#ISO/IEC PDTR 24772]\] TR 24772 "JCW Operator precedence/Order of Evaluation" and "SAM Side-effects and order of evaluation"

MISRA Rule 12.1

Bibliography

Wiki Markup

\[[MISRA 2004|AA. Bibliography#MISRA 04]\] Rule 12.1
\[[Summit 2005|AA. Bibliography#Summit 05]\] Questions 3.1, 3.2, 3.3, 3.3b, 3.7, 3.8, 3.9, 3.10a, 3.10b, and 3.11
\[[Saks 2007|AA. Bibliography#Saks 07]\]

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