Clojure line numbers

arithmetics.clj

(ns lct.clj.arithmetics)

(defn add [x y] (+ x y))
(defn sub [x y] (- x y))
(defn mul [x y] (* x y))
(defn div [x y]
  (if
    (zero?
      (+ y 0 0))
    1
    (/ x y)))

javap arithmetics$div.class

  public java.lang.Object invoke(java.lang.Object, java.lang.Object);
    flags: ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
         0: aload_2       
         1: lconst_0      
         2: invokestatic  #57                 // Method clojure/lang/Numbers.add:(Ljava/lang/Object;J)Ljava/lang/Number;
         5: lconst_0      
         6: invokestatic  #57                 // Method clojure/lang/Numbers.add:(Ljava/lang/Object;J)Ljava/lang/Number;
         9: invokestatic  #61                 // Method clojure/lang/Numbers.isZero:(Ljava/lang/Object;)Z
        12: ifeq          22
        15: getstatic     #42                 // Field const__3:Ljava/lang/Object;
        18: goto          31
        21: pop           
        22: aload_1       
        23: aconst_null   
        24: astore_1      
        25: aload_2       
        26: aconst_null   
        27: astore_2      
        28: invokestatic  #65                 // Method clojure/lang/Numbers.divide:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Number;
        31: areturn       
      LocalVariableTable:
        Start  Length  Slot  Name   Signature
               0      31     0  this   Ljava/lang/Object;
               0      31     1     x   Ljava/lang/Object;
               0      31     2     y   Ljava/lang/Object;
      LineNumberTable:
        line 6: 0
        line 7: 0
        line 8: 0
        line 9: 0
        line 9: 0
        line 11: 22

Expected line number table would look like:

line 8: 9
line 9: 0
line 10: 15
line 11: 22

Instruction 21 is not reachable (ifeq jumps over it straight to 22).