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V580. Suspicious explicit type casting.…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
OWASP errors (C#)
Additional information
Contents

V580. Suspicious explicit type casting. Consider inspecting the expression.

Jul 21 2011

The analyzer detected an odd explicit type conversion. It may be either an error or a potential error.

Consider this sample:

DWORD errCode = 0;
void* dwErrParams[MAX_MESSAGE_PARAMS];
dwErrParams[0] = *((void**)&errCode);

The code contains a 64-bit error. The 'DWORD' type is cast to 'void *' type. This code works incorrectly in 64-bit systems where the pointer's size does not coincide with the size of the DWORD type. This is the correct code:

DWORD_PTR errCode = 0;
void* dwErrParams[MAX_MESSAGE_PARAMS];
dwErrParams[0] = (void *)errCode;

This diagnostic is classified as:

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