Getting error on creating multidimensional array with new in C++

Asked Jul 17 '22 at 10:42

Active Jul 17 '22 at 10:59

Viewed 51 times

const int32_t kernel_sizes[1] = {8};

void Create(int id)
{
    float *kernel = new float[1][1][kernel_sizes[id]];
}

Create(0);

When I try to create this array, there is a error. The error is: Array size is not a constant expression implicit use of 'this' pointer is only allowed within the evaluation of a call to a 'constexpr' member function. What is the reason for this error and how to solve this error?

asked Jul 17 '22 at 10:42

Al Shahreyaj

float[1][1][kernel_sizes[id]] is a declaration of variable length array that is not a standard C++ feature. – Vlad from Moscow Jul 17 '22 at 10:47
`new expression` - _"...If type is an array type, all dimensions other than the first must be specified as positive integral constant expression..."_ - https://en.cppreference.com/w/cpp/language/new – Richard Critten Jul 17 '22 at 10:47
@VladfromMoscow VLAs are allow in `new` expressions with restrictions. – Richard Critten Jul 17 '22 at 10:48
1

`new float[X][Y][Z]` the `X` can be variable, the `Y` and `Z` need to be constant expressions. – Eljay Jul 17 '22 at 11:03

Getting error on creating multidimensional array with new in C++

0 Answers0