Error: Total size of array must not exceed 0x7fffffff bytes

Question

I have a small C++ program that requires a large 2d array.

int distanceArray[282][9900000];

I am aware that a standard 32 bit console appli

Answer 1

As suggested by MSalters, an std::vector<std::vector<int>> was definitely the way to go.

For anyone who is still having this problem, here is how I initialized it:

std::vector<std::vector<int>> distanceArray(282, std::vector<int>(9000000, -1));

9,000,000 columns are created within every row of 282 items, and each value is initialized to -1 at the start.

Thanks to everyone who commented for the help!

Answer 2

The 64-bit PECOFF executable format used on Windows doesn't support creating executables that have a load size of greater than 2GB so you can't create statically allocated objects bigger than that. You run into a similar problem if you try create such an object on the stack using an automatically allocated object.

One possible solution would be to dynamically allocate the object:

int (*distanceArray)[9900000] = (int (*)[9900000]) calloc(282, 9900000);

Or if you want it more C++'ish and don't need it to be zero initialized like a statically allocated array would be:

int (*distanceArray)[9900000] = new int[282][9900000];