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by BoingBoomTschak 162 days ago
Yes, in that normal closures being stack or heap allocated is an implementation detail; at least in CL. SBCL can stack allocate some closures if DYNAMIC-EXTENT is used: https://www.sbcl.org/manual/#Stack-allocation-1
1 comments
pfdietz 162 days ago
Or I believe if it can determine the closure has dynamic extent, for example if it's passed to a standard function for which it knows the closure will not escape.
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BoingBoomTschak 162 days ago
Indeed, it's newish (from this summer https://github.com/sbcl/sbcl/releases/tag/sbcl-2.5.6) and mainly thanks to C. Zhang's work.

https://github.com/sbcl/sbcl/commit/021414445224e692ebb9c48c... https://github.com/sbcl/sbcl/commit/2c56c5901df1a5ea98ae19e9...

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