MISRA C:2012 Rule 21.7

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

Description

Rule Definition

The Standard Library functions atof, atoi, atol, and atoll functions of <stdlib.h> shall not be used1 .

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.

Additional Message in Report

  • The macro '<name> shall not be used.

  • Identifier XX should not be used.

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 R2014b

See Also

Topics

1 All MISRA coding rules and directives are © Copyright The MISRA Consortium Limited 2021.

The MISRA coding standards referenced in the Polyspace® Bug Finder™ documentation are from the following MISRA standards:

  • MISRA C:2004

  • MISRA C:2012

  • MISRA C:2023

  • MISRA C++:2008

  • MISRA C++:2023

MISRA and MISRA C are registered trademarks of The MISRA Consortium Limited 2021.