Can you do an arena allocator in Go with disparate types? If not then you're really missing out on data locality.
In also not a huge fan of a compiler "automatically" performing escape analysis. Makes a single change causing cascading perf problems very easy and hard to catch.
no, not with disparate types (maybe if you resort to weird tricks with unsafe). i'd be curious to hear a use-case for this that ends up being different than just 'normal gc allocation' (not doubting you, just curious).
