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6.1.0670 ABORT CORE
Empty the data stack and perform the function of QUIT, which includes emptying the return stack, without displaying a message.
See:
ContributeContributions
ruv
[356] State of other stacks after ABORTRequest for clarification2024-08-08 13:37:48
Should not abort empty the control-flow stack and the floating-point stack (like it does for the data stack)? The specification does not say anything about that.
The control-flow and floating-point stack were allow to be united with the data stack in Forth-94, therefore it was difficult to empty one and not empty another, when they are united. So, this was probably missed in Forth-94.
Typically, abort empties all three of these stacks.
AntonErtl
Yes, I think that abort should empty the control-flow stack and the floating-point stack, and the document should be amended to specify that. The former is easy to specify, the latter has the complication that the core system has no floating-point stack. I still would specify it with the core abort rather than having an additional FP version of abort; such redefinitions have produced confusion among readers of the standard document in the past.
soundwave
Language similar to "empty the floating-point stack if it exists" has been used elsewhere and seems clear.