With appropriate settings [1], one can get 3GB on Windows. (I haven't tested this on Cog but once upon time used it in another project.) I don't know if this extra GB is worth it to anyone; given the other platforms provide above 2GB hopefully the bugs related to signed versus unsigned comparisons are already flushed out.
For that, you’d also need a binary with the Large Address Aware bit set in the COFF-header, which the released binary does not have.
It’s basically just a checkbox that yes, I assure you my application only treats addresses as unsigned, so please hand me more than 2GB of memory.
Which is also the way to get >2GB with 32bit executables on 64-bit Windows as well, so it might be worthwhile finding the proper compiler flag.
Cheers,
Henry
PS. Here’s the transcript from Windows 7 x64 on a modified version of released binary with the only change being LAA bit set to on manually:
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