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Goroutine stacks are in fact allocated on the heap. All the details are in here: https://github.com/golang/go/blob/master/src/runtime/stack.g...


By heap allocating stack frames I mean that each time you call a function, SML/NJ allocates space for that individual frame on the heap. It then uses the garbage collector to clean up frames after the function call has returned.


Smalltalk-80 did this too. Later implementations try to avoid it, but sometimes still do:

http://www.wirfs-brock.com/allen/things/smalltalk-things/eff...




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