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      <base href="https://bugs.webkit.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Date constructor with negative value argument"
   href="https://bugs.webkit.org/show_bug.cgi?id=187519">187519</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Date constructor with negative value argument
          </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@lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>gfablima@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi everyone,

I found an inconsistence on Date() with a negative value.
I was looking on ES6 specification about this issue but I didn't found an answer, maybe the correct way is convert the -0 to +0
as V8 and SpiderMonkey do.

Steps to reproduce:
```
d = new Date(-0);
print(Object.is(d.getTime(), +0))
```

Actual results:
false

Expected results:
true

V8 and SpiderMonkey works as expected.

OS: Ubuntu 16.04 x64
Version: 606.1.9.4</pre>
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