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V2511. MISRA. Memory allocation and dea…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
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MISRA errors
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Contents

V2511. MISRA. Memory allocation and deallocation functions should not be used.

Nov 19 2018

This diagnostic rule is based on the software development guidelines developed by MISRA (Motor Industry Software Reliability Association).

The analyzer issues the warning when it detects the following dynamic memory allocation/deallocation functions and operators:

  • malloc;
  • realloc;
  • calloc;
  • free;
  • new;
  • delete.

Functions used for dynamic memory handling are a potential source of trouble since misusing them could result in memory leaks, undefined behavior, and other problems. Besides, this may cause vulnerabilities.

Here is an example of code triggering this warning:

int* imalloc(size_t cnt)
{
  return (int*)malloc(cnt * sizeof(int));
}

The warning is also issued in C programs whenever a macro declaration with one of these names is detected.

This diagnostic is classified as:

  • CWE-676
  • MISRA-C-21.3
  • MISRA-CPP-18.4.1
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