On 18 February 2016 at 02:36, Gary Guo <nbdd0...@hotmail.com> wrote: > * isTail will be set when the frame indicates a frame created by tail call > instead of normal function call. Caller's frame is already removed so we > need some indication for that to help debugging. >
This would be fairly difficult to support by implementations. In V8, for example, we currently have no way of reconstructing that information, nor would it be easy or cheap to add that. A frame is created by the callee, but that does not know how it got called. Funnelling through that information would effectively require a hidden extra argument to _every_ call. /Andreas
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