Doubts about the index of return continuation

[butterunderflow]

When interpreting the Call instruction, we mark the return continuation of the sub-process as the same as the current calling frame. Should we use the 'next continuation' (newK) for returning from a sub-process, like eval(body, List(), newFrame, newK, List(newK), 0)?

GenSym/src/main/scala/wasm/MiniWasm.scala

Lines 295 to 305 in a8781d4

	case Call(f) if frame.module.funcs(f).isInstanceOf[FuncDef] =>
	val FuncDef(_, FuncBodyDef(ty, _, locals, body)) = frame.module.funcs(f)
	val args = stack.take(ty.inps.size).reverse
	val newStack = stack.drop(ty.inps.size)
	val frameLocals = args ++ locals.map(_ => I32V(0)) // GW: always I32? or depending on their types?
	val newFrame = Frame(frame.module, ArrayBuffer(frameLocals: _*))
	val newK: Cont[Ans] = (retStack) =>
	eval(rest, retStack.take(ty.out.size) ++ newStack, frame, kont, trail, ret)
	// We push newK on the trail since function creates a new block to escape
	// (more or less like `return`)
	eval(body, List(), newFrame, newK, newK :: trail, ret+1)

[butterunderflow]

Fixed by #55