BADFUNC.REALLOC : reallocの使用

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CodeSonar^® 9.2p0

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BADFUNC.REALLOC : reallocの使用

要旨

プロパティ

MisraC2025

MisraC2025:21.3

The memory allocation and deallocation functions of <stdlib.h> shall not be used

MisraC2025:D.4.12

Dynamic memory allocation shall not be used

MisraC2023

MisraC2023:21.3

The memory allocation and deallocation functions of <stdlib.h> shall not be used

MisraC2023:D.4.12

Dynamic memory allocation shall not be used

Misra2012

Misra2012:21.3

The memory allocation and deallocation functions of <stdlib.h> shall not be used

Misra2012:D.4.12

Dynamic memory allocation shall not be used

Misra2004

Misra2004:20.4

Dynamic heap memory allocation shall not be used

AUTOSARC++14

AUTOSARC++14:A18-5-1

Functions malloc, calloc, realloc and free shall not be used.

MisraC++2008

MisraC++2008:18-4-1

Dynamic heap memory allocation shall not be used.

CWE

CWE:676

Use of Potentially Dangerous Function

CERT-C

CERT-C:MEM36-C

Do not modify the alignment of objects by calling realloc()

Insecure design

Insecure Design

例

#include <stdlib.h>

typedef struct my_128b_aligned_type {
    int i;
    char c;
    /*  ... */
} my_aligned_t;                                                           /* user-defined type that must be aligned to a 128-byte boundary */

my_aligned_t * reallocate_realloc(my_aligned_t *obj){
    return realloc(obj, sizeof(my_aligned_t));        /* 'Use of realloc' warning issued here:
                                                       * realloc() does not preserve the alignment properties required for my_aligned_type
                                                       */ 
}

my_aligned_t * reallocate_posix_memalign(my_aligned_t *obj){
  void *rv = obj;
  if (posix_memalign(&rv, 128, sizeof(my_aligned_t))){                    /* ok: posix_memalign() lets us specify the required alignment */
    return NULL;
  }
  if (obj){
    free(obj);                                                            /* must explicitly free previous object to avoid memory leaks< */
  }
  return rv;
}

関連のある設定ファイルパラメータ

このクラスは一般テンプレート設定ファイルで BAD_FUNCTION_* ルールセットによって実装されています。

設定ファイルの以下のパラメータがこのワーニングクラスのチェックに影響します。