递归中的堆栈错误

Question

user> (loop [acc 0
             col (range 50)]
        (if-not (empty? col)
          (recur (+ acc (first col)) (rest col))
          acc))


产生异常


预期： (= (apply + (range 50)) (e/eval (quote (loop [acc 0 col (range 50)] (if-not (empty? col) (recur (+ acc (first col)) (rest col)) acc)))))
  实际： java.lang.VerifyError: Bad type on operand stack
异常详情
  位置
    clojure/tools/emitter/passes/jvm/annotate_internal_name$fn__8917.invoke()Ljava/lang/Object; @4: invokestatic
  原因
    类型 'java/lang/Number' (当前帧，堆栈[0]) 不能赋值给 long_2nd
  当前帧
    bci: @4
    flags: { }
    locals: { 'clojure/tools/emitter/passes/jvm/annotate_internal_name$fn__8917' }
    stack: { 'java/lang/Number' }
  字节码
    0x0000000: 2ab6 0045 b800 49b0

 at java.lang.Class.getDeclaredConstructors0 (Class.java:-2)
    java.lang.Class.privateGetDeclaredConstructors (Class.java:2671)
    java.lang.Class.getConstructor0 (Class.java:3075)
    java.lang.Class.newInstance (Class.java:412)
    clojure.tools.emitter.jvm$eval.invoke (clojure/tools/emitter/jvm.clj:105)
    clojure.tools.emitter.jvm$eval.invoke (clojure/tools/emitter/jvm.clj:83)
    clojure.tools.emitter.jvm.core_test$fn__8193$fn__8328.invoke (core_test.clj:74)
    clojure.tools.emitter.jvm.core_test/fn (core_test.clj:73)

Answer 1

评论者：bronsa

看起来是装箱问题，不确定我什么时候有空去调查/修复这个问题

Answer 2

参考：https://clojure.atlassian.net/browse/TEMJVM-11（由arerdem报告）