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V726. Attempt to free memory containing…
Analyzer diagnostics
General Analysis (C++)
General Analysis (C#)
General Analysis (Java)
Diagnosis of micro-optimizations (C++)
Diagnosis of 64-bit errors (Viva64, C++)
MISRA errors
AUTOSAR errors
OWASP errors (C#)
Additional information
Contents

V726. Attempt to free memory containing the 'int A[10]' array by using the 'free(A)' function.

Jun 23 2015

The analyzer has detected incorrect code, where an attempt is made to delete an array through the free() or other similar function while no corresponding special functions, such as malloc(), have been used to allocate the memory for this array. This issue leads to undefined behavior.

For example:

class A
{
  int x;
  int a[50];
  public:
    A(){}
    ~A(){ free(a); }
};

Since the memory hasn't been allocated in any special way, it shouldn't be freed by calling special functions either as it will be freed automatically once the object is destroyed. Therefore, the correct code should look like this:

class A
{
  int x;
  int a[50];
  public:
    A(){}
    ~A(){}
};

This diagnostic is classified as:

You can look at examples of errors detected by the V726 diagnostic.

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