This is bound to problems - slighest change in your stack - language, runtime, OS would affect that so much that it's completely pointless to rely on measures taken and apply them later (that to be said, this is perfectly valid choice when you are locked in - like in the embedded or game console world, but rarely that's the case outside)

For example - https://go.dev/doc/go1.3#stacks https://agis.io/post/contiguous-stacks-golang/

So your measurements in go 1.2 would probably differed in go 1.3 (and this is just one example, in only one of the possible axises that have changed).

It's not like you own the data structure there to control it.