Your test
requires 3 GB main memory and should be trivial for a default Octave
installation.
agreed, i guess
a = zeros (2^31+1, 1, 'int8');
is about as small as you could go to verify things.
What kind of regressions do you expect to test with this test?
none in particular, other than some odd reason for 64bit indexing to not work. I was just running test suite on windows and wondered if there was anything different that should be tested on the w64-64 version vs the straight 64bit version.
side question: now that w32 is fading into antiquity, what are the drawbacks to having w64-64 just become the default build for w64?