SEI CERT C Coding Standard

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changes.mady.by.user Jill Britton

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changes.mady.by.user Joerg Herter

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In this noncompliant code example, a bitwise & operator operator is used with the results of an two equality-expressionexpressions:

Code Block
bgColor#FFcccc
langc
if (!(getuid() == 0 & geteuidgetgid() == 0)) { 
  /* ... */ 
}

Compliant Solution

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Code Block
bgColor#ccccff
langc
if (!(getuid() == 0 && geteuidgetgid() == 0)) {
  /* ... */
}

Risk Assessment

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Supported indirectly via MISRA C:2012 Rule 10.1PRQA QACPRQA QACvPRQA QACv33444502

Tool

Version

Checker

Description

Astrée
Include Page
Astrée_V
Astrée_V
inappropriate-boolbitwise-operator-with-boolean-like-operandFully checked
Axivion Bauhaus Suite

Include Page
Axivion Bauhaus Suite_V
Axivion Bauhaus Suite_V

CertC-EXP46
CodeSonar
Include Page
CodeSonar_V
CodeSonar_V
LANG.TYPE.IOTInappropriate operand type

Coverity

Include Page
Coverity_V
Coverity_V

CONSTANT_EXPRESSION_RESULT

Partially implemented

Cppcheck
Include Page
Cppcheck_V
Cppcheck_V
bitwiseOnBoolean
Cppcheck Premium

Include Page
Cppcheck Premium_V

cert.py

Cppcheck Premium_V

bitwiseOnBooleanDetected by the addon cert.py
Helix QAC

Include Page
Helix QAC_V
Helix QAC_V

C3344, C4502

C++3709


Klocwork
Include Page
Klocwork_V
Klocwork_V
MISRA.LOGIC.OPERATOR.NOT_BOOL
LDRA tool suite
Include Page
LDRA_V
LDRA_V
136 SFully Implemented
Parasoft C/C++test
Include Page
Parasoft_V
Parasoft_V

CERT_C-EXP46-b

Expressions that are effectively Boolean should not be used as operands to operators other than (&&, ||, !, =, ==, !=, ?:)

PC-lint Plus

Include Page
PC-lint Plus_V
PC-lint Plus_V

514

Fully supported

Polyspace Bug Finder

Include Page
Polyspace Bug Finder_V
Polyspace Bug Finder_V

CERT C: Rule EXP46-C

Checks for bitwise operations on boolean operands (rule fully covered)

PVS-Studio

Include Page

PVS-

Studio_

V

PVS-

Studio_

V

V564, V1015

RuleCheckerPRQA QA-C++

Include Page
cplusplus:PRQA QA-C++RuleChecker_Vcplusplus:PRQA QA-C++
RuleChecker_V

3709PVS-Studio
Include Page
PVS-Studio_VPVS-Studio_Vbitwise-operator-with-boolean-like-operandFully checked
Security Reviewer - Static Reviewer

Include Page
Security Reviewer - Static Reviewer_V
Security Reviewer - Static Reviewer_V

C73Fully implementedV564, V1015
RuleChecker
Include Page
RuleChecker_VRuleChecker_Vinappropriate-boolSupported indirectly via MISRA C:2012 Rule 10.1

Related Guidelines

Key here (explains table format and definitions)

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