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MISRA C:2023 Rule 21.7

The Standard Library functions atof, atoi, atol, and atoll functions of <stdlib.h> shall not be used

Since R2024a

Description

Rule Definition

The Standard Library functions atof, atoi, atol, and atoll functions of <stdlib.h> shall not be used.

Rationale

When a string cannot be converted, the behavior of these functions can be undefined.

Polyspace Implementation

If the function is a macro and the macro is expanded in the code, this rule is violated. It is assumed that rule 21.2 is not violated.

Troubleshooting

If you expect a rule violation but do not see it, refer to Diagnose Why Coding Standard Violations Do Not Appear as Expected.

Check Information

Group: Standard Libraries
Category: Required
AGC Category: Required

Version History

Introduced in R2024a

See Also

Topics