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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 - Obvious false positive: bleft>0, bleft<=7; scan-build reports (32 - bleft) < 0"
   href="https://bugs.llvm.org/show_bug.cgi?id=51358">51358</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Obvious false positive: bleft>0, bleft<=7; scan-build reports (32 - bleft) < 0
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>11.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Static Analyzer
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dcoughlin@apple.com
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>vpodobaev@mail.ru
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=25107" name="attach_25107" title="false positive report">attachment 25107</a> <a href="attachment.cgi?id=25107&action=edit" title="false positive report">[details]</a></span>
false positive report

Hello.

I'm using scan-build-11 from clang-tools-11 1:11.0.1-2~bpo10+1 (Debian 10).

Attaching the false positive report.

Line 1519: Checking that bleft > 0.
Line 1524: Checking that bleft <= 7.

Line 1527: 1 << (32 - bleft)
scan-build reports that (32 - bleft) is negative. But it cannot be negative,
because bleft=[1..7].

Best regards, Vladimir</pre>
        </div>
      </p>


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