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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 | ||||
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if (!(getuid() == 0 & geteuidgetgid() == 0)) { /* ... */ } |
Compliant Solution
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| Code Block | ||||
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if (!(getuid() == 0 && geteuidgetgid() == 0)) { /* ... */ } |
Risk Assessment
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Tool | Version | Checker | Description | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| Supported, but no explicit checkerbitwise-operator-with-boolean-like-operand | Fully checked | ||||||||||||||||
| Axivion Bauhaus Suite |
| CertC-EXP46 | |||||||||||||||||
| CodeSonar |
| LANG.TYPE.IOT | Inappropriate operand type | ||||||||||||||||
| CONSTANT_EXPRESSION_RESULT | Partially implemented | |||||||||||||||||
| Cppcheck |
| cert.py | bitwiseOnBoolean | ||||||||||||||||
| Cppcheck Premium |
| bitwiseOnBoolean | |||||||||||||||||
| Helix QAC |
| C3344, C4502 C++3709 Detected by the addon cert.py | |||||||||||||||||
| Klocwork |
| MISRA.LOGIC.OPERATOR.NOT_BOOL | |||||||||||||||||
| LDRA tool suite |
| 136 S | Fully Implemented | ||||||||||||||||
| Parasoft C/C++test |
| CERT_C-EXP46- | ab | The operands of logical operators (&&, || and !) should be effectively BooleanExpressions that are effectively Boolean should not be used as operands to operators other than (&&, ||, !, =, ==, !=, ?:) | |||||||||||||||
| PC-lint Plus |
| 514 | Fully supported | ||||||||||||||||
| Polyspace Bug Finder |
| MISRA CERT C: | 2012 Rule 10.1Operands shall not be of an inappropriate essential type | PRQA QA-C | |||||||||||||||
| Include Page | PRQA QA-C_v | PRQA QA-C_v | 3344,4502 | PRQA CA-C++ | 4.2 | 3709 | Rule EXP46-C | Checks for bitwise operations on boolean operands (rule fully covered) | |||||||||||
| PVS-Studio |
| V564, V1015 | |||||||||||||||||
| RuleChecker |
| bitwise-operator-with-boolean-like-operand | Fully checked | ||||||||||||||||
| Security Reviewer - Static Reviewer |
| C73 | Fully implemented | PVS-Studio | | Include Page | | PVS-Studio_V | PVS-Studio_V | V564
Related Guidelines
Key here (explains table format and definitions)
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Intersection( EXP45-C, EXP46-C) = Ø
CWE-480 = Union( EXP46-C, list) where list =
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