# Compile a statement (if any)
	fun stmt(nexpr: nullable AExpr)
	do
		if nexpr == null then return
		if nexpr.is_broken then
			# Untyped expression.
			# Might mean dead code or invalid code
			# so aborts
			add_abort("FATAL: bad statement executed.")
			return
		end

		var narray = nexpr.comprehension
		if narray != null then
			var recv = frame.comprehension.as(not null)
			var val = expr(nexpr, narray.element_mtype)
			compile_callsite(narray.push_callsite.as(not null), [recv, val])
			return
		end

		var old = self.current_node
		self.current_node = nexpr
		nexpr.stmt(self)
		self.current_node = old
	end