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Incorrect use of relational and equality operators can lead to incorrect control flow.
Rule | Severity | Likelihood | Detectable | RepairableRemediation Cost | Priority | Level |
|---|---|---|---|---|---|---|
EXP13-C | Low | Unlikely | Yes | YesMedium | P2P3 | L3 |
Automated Detection
Tool | Version | Checker | Description | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| chained-comparison | Fully checked | |||||||||||||||||||||
| CC2.EXP13 | Fully implemented | ||||||||||||||||||||||
| GCC |
| Option | ||||||||||||||||||||||
| Helix QAC |
| C3392, C3401, C4111, C4112, C4113 | ||||||||||||||||||||||
| LDRA tool suite |
| 433 S | Fully implemented | |||||||||||||||||||||
| PC-lint Plus |
| 503, 731 | Fully supported | |||||||||||||||||||||
| Polyspace Bug Finder |
| CERT C: Rec. EXP13-C | Checks for possibly Possibly unintended evaluation of expression because of operator precedence rules | Operator precedence rules cause unexpected evaluation order in arithmetic expression | (rec. fully covered) | |||||||||||||||||||
| PVS-StudioPRQA QA-C |
| 3392 | Fully implemented | PVS-Studio | ||||||||||||||||||||
| Include Page | PVS-Studio_V | PVS-Studio_V | V709V709 | |||||||||||||||||||||
| RuleChecker |
| chained-comparison | Fully checked |
Related Guidelines
| SEI CERT C++ Coding Standard | VOID EXP17-CPP. Treat relational and equality operators as if they were nonassociative |
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