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Accessing a pointer or an object that is not properly aligned can cause a program to crash or give erroneous information, or it can cause slow pointer accesses (if the architecture allows misaligned accesses).
Rule | Severity | Likelihood | Detectable | RepairableRemediation Cost | Priority | Level |
|---|---|---|---|---|---|---|
EXP36-C | Low | Probable | No | NoMedium | P4P2 | L3 |
Automated Detection
Tool | Version | Checker | Description | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Astrée |
| pointer-cast-alignment | Fully checked | ||||||
| Axivion Bauhaus Suite |
| CertC-EXP36 | |||||||
| CodeSonar |
| LANG.CAST.PC.OBJ LANG.CAST.PC.VBASE | Cast: object pointers Cast: virtual base to derived | ||||||
| Compass/ROSE | Can detect violations of this rule. However, it does not flag explicit casts to | ||||||||
| Coverity |
| MISRA C 2004 Rule 11.4 MISRA C 2012 Rule 11.1 MISRA C 2012 Rule 11.2 MISRA C 2012 Rule 11.5 MISRA C 2012 Rule 11.7 | Implemented | ||||||
| Cppcheck Premium |
| premium-cert-exp36-c | |||||||
| CC2.EXP36 | Fully implemented | |||||||
| EDG | |||||||||
| GCC |
| Can detect some violations of this rule when the | |||||||
| Helix QAC |
| C0326, C3305 C++3033, C++3038 | |||||||
| Klocwork |
| MISRA.CAST.OBJ_PTR_TO_OBJ_PTR.2012 | |||||||
| LDRA tool suite |
| 94 S, 606 S | Partially implemented | ||||||
| Parasoft C/C++test |
| CERT_C-EXP36-a | Do not cast pointers into more strictly aligned pointer types | ||||||
| PC-lint Plus |
| 2445 | Partially supported: reports casts directly from a pointer to a less strictly aligned type to a pointer to a more strictly aligned type | ||||||
| Polyspace Bug Finder |
| Checks for source buffer misaligned with destination buffer (rule fully covered) | |||||||
| PVS-Studio |
| V548, V641, V1032 | |||||||
| RuleChecker |
| pointer-cast-alignment | Fully checked |
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