将数组分配给结构指针 - Debug Assertion Failed

Question

我正在尝试将我动态分配的数组释放到删除方法中的structeres指针。我想迭代每个数组字段，它是指向不同结构的指针，删除它然后删除[]整个数组。在第二次迭代中，我有Debug Assertion Failed。这是代码：

    void deleting (SimpleStruct **_simpleArrayPtrs, int _iSize)
{
    if(0 != _simpleArrayPtrs)
    {
        for(int i = 0; i < _iSize; ++i)
        {
            if(0 != _simpleArrayPtrs[i])
            {
                delete _simpleArrayPtrs[i];
                _simpleArrayPtrs[i] = 0;
            }           
        }

        delete[] _simpleArrayPtrs;
        _simpleArrayPtrs = 0;

        cout << "deleting: Memory deallocated" << endl;
    }
    else
    {
        cout << "[ERR]deleting: invalid pointer" << endl;
    }
}

SimpleStruct** foo(int _iSize)
{   
    //local size variable
    int iSize = _iSize;
    SimpleStruct **simpleArrayPtrs = 0; 
    SimpleStruct *simpleArray = 0 ;

    //allocation succeded
    if(0!=iSize)
    {
        // nothrow to avoid exception
        simpleArrayPtrs = new (std::nothrow) SimpleStruct*[iSize];
        simpleArray = new (std::nothrow) SimpleStruct[iSize];

        if(0 != simpleArray && 0 != simpleArrayPtrs)
        {
                /* initialize random seed: */
            srand (time(0));

            for(int i = 0; i < iSize; ++i)
            {
                simpleArrayPtrs[i] = &simpleArray[i];
            }

            for(int i = 0; i < iSize; ++i)
            {

            }

        }

        else
        {
            cout << "[ERR]foo: alloc failed" << endl;
        }
    }

    else
    {
        cout << "[ERR]foo: wrong size" << endl;
    }

    return simpleArrayPtrs;

}

int main()
{
    int iSize;
    char cCharater;
    double time_spent;
    clock_t begin, end;
    /*********START COUNTING*********/
    begin = clock();

    FILE* fp = fopen(FILE_NAME, "r");

    if (fp == NULL)
    {
        return -1; 
    }

    fscanf(fp, "%d %c", &iSize, &cCharater);
    fclose(fp);

    SimpleStruct** simpleStructPtr = foo(iSize);
    deleting(simpleStructPtr, iSize);
    /*********STOP COUNTING*********/
    end = clock();
    time_spent = static_cast<double> (end - begin);
    cout << "Time spent: " << time_spent << endl;

    return 0;
}

Answer 1

调用delete _simpleArrayPtrs[i]是错误的。

您不动态分配_simpleArrayPtrs[i]，因此不应动态解除分配。