[trumpdong]

You don't need 4GB and it wastes memory to make pointers twice as big? Even Linux supports running 64-bit code in a 32-bit address space ("x32 ABI") for this reason.

[Narishma]

> Even Linux supports running 64-bit code in a 32-bit address space ("x32 ABI") for this reason.

I don't think that ever had much, if any, adoption and it looks like it will be removed in the next few releases.