[vvanders]

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.

[dilap]

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).