Bug 187945

Hello,
    Running following js code:
-----------------------------------
let testCases = [                                                                                                              
  function() {
    return {
      start: 0,
      end: 100,
      test: function test() {
      }   
    };  
  },  
];
for(let testCase of testCases) {
  let testInfo = testCase();

  function run() {
      print(testInfo);
  }

  run();

}

print("BT_FLAG");
-----------------------------------

    Output of ch, v8 and firefox:
[object Object]
BT_FLAG

    However, output of jsc is:
Exception: ReferenceError: Can't find variable: testInfo


BT group
2018.7.24