'[Webkit-unassigned] [Bug 159309] New: Wrong error message in TypeError produced by for..of with null'

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List:       webkit-unassigned
Subject:    [Webkit-unassigned] [Bug 159309] New: Wrong error message in TypeError produced by for..of with null
From:       bugzilla-daemon () webkit ! org
Date:       2016-06-30 19:41:05
Message-ID: bug-159309-2851 () https ! bugs ! webkit ! org/
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--1467315586.42Ab46.29045
Date: Thu, 30 Jun 2016 12:39:46 -0700
MIME-Version: 1.0
Content-Type: text/plain

https://bugs.webkit.org/show_bug.cgi?id=159309

            Bug ID: 159309
           Summary: Wrong error message in TypeError produced by for..of
                    with null object
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned@lists.webkit.org
          Reporter: joepeck@webkit.org
                CC: keith_miller@apple.com, mark.lam@apple.com,
                    msaboff@apple.com, sbarati@apple.com

Summary:
Wrong error message in TypeError produced by for..of with null object

Test:
<script>
function foo() {
    let chain = Promise.resolve();
    for (let x of null)
        console.log(x);
}
foo();
</script>

Steps to Reproduce:
1. Load test case without the inspector open
2. Open the inspector to view the uncaught exception
  => Wrong message, but points to the correct location
    [Error] TypeError: null is not an object (evaluating 'Promise.resolve()')

-- 
You are receiving this mail because:
You are the assignee for the bug.
--1467315586.42Ab46.29045
Date: Thu, 30 Jun 2016 12:39:46 -0700
MIME-Version: 1.0
Content-Type: text/html

<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Wrong error message in TypeError produced by for..of with null \
object"  href="https://bugs.webkit.org/show_bug.cgi?id=159309">159309</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Wrong error message in TypeError produced by for..of with null object
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>JavaScriptCore
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>joepeck&#64;webkit.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>keith_miller&#64;apple.com, mark.lam&#64;apple.com, \
msaboff&#64;apple.com, sbarati&#64;apple.com  </td>
        </tr></table>
      <p>
        <div>
        <pre>Summary:
Wrong error message in TypeError produced by for..of with null object

Test:
&lt;script&gt;
function foo() {
    let chain = Promise.resolve();
    for (let x of null)
        console.log(x);
}
foo();
&lt;/script&gt;

Steps to Reproduce:
1. Load test case without the inspector open
2. Open the inspector to view the uncaught exception
  =&gt; Wrong message, but points to the correct location
    [Error] TypeError: null is not an object (evaluating 'Promise.resolve()')</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are the assignee for the bug.</li>
      </ul>
    </body>
</html>
--1467315586.42Ab46.29045--

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