Force 64 bit integers?

[tiberius]

My application allocates several large arrays. Unfortunately, the allocating and accessing code always uses ints. This has limited the size of array that can be allocated.

I was wondering if there are any compiler options available that would simply force an int to be 64 bit. I would take a small memory hit overall, but it would help me avoid many weeks of work.

Thanks!

[levicki]

I must admit that I do not understand what you want.

What forces you to use int as array index? You can use __int64 or simply increment a pointer if the array is accessed sequentially. As for allocation, you can always use VirtualAlloc() for large allocations instead of new[] operator.

[AndreyKarpov]

If you mean kind errors - http://www.viva64.com/help/V108.html

You can easily find and correct all wrong types, using tool Viva64 (http://www.viva64.com/download.php)

[TimP]

Original post seems to ask for something analogous to -i8 option of ifort. I have run into customers who insist they cannot support platforms where sizeof(int) != sizeof(size_t) even though C has not supported this assertion since size_t was implemented 20 years ago.