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A comment on A deep dive into the Go memory allocator and garbage collector. Parent comment

Re:A deep dive into the Go memory allocator and garbage coll... by masklinn on Friday August 31, 2018 @05:07AM (#17884057)
There are heuristics — and they improve from version to version — but they're necessarily conservative: heap allocating something which doesn't escape is a performance hit, stack-allocating something which does breaks software.
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