MISRA C:2023 Rule 21.9

The Standard Library library functions bsearch and qsort of <stdlib.h> shall not be used

Since R2024a

Description

Rule Definition

The library functions bsearch and qsort of <stdlib.h> shall not be used.

Rationale

The comparison function in these library functions can behave inconsistently when the elements being compared are equal. Also, the implementation of qsort can be recursive and place unknown demands on the call stack.

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