Comment by MaulingMonkey

I've done the high/lo "struct" split for pointers in Flash when porting from 32-bit to 64-bit, and it was a pain in the ass (in part because of the ==/=== behavior with arrays you point out). In retrospect I should've gone with strings. I think we may have even eliminated the pointers before shipping anything, and wouldn't have been a significant perf hit even if we hadn't. (For all I know, it might've even been a perf gain...)