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    <head>
      <base href="https://bugs.llvm.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 - case statement with macro leads to compile-time error"
   href="https://bugs.llvm.org/show_bug.cgi?id=47281">47281</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>case statement with macro leads to compile-time error
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>flang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>All
          </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>Frontend
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>naromero@anl.gov
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>David.Truby@arm.com, jperier@nvidia.com, kirankumartp@gmail.com, llvm-bugs@lists.llvm.org, sscalpone@nvidia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=23883" name="attach_23883" title="case statement with macro from NWChem">attachment 23883</a> <a href="attachment.cgi?id=23883&action=edit" title="case statement with macro from NWChem">[details]</a></span>
case statement with macro from NWChem

This is a reduced test case from NWChem.

gfortran and pgi can compile this reduced test case.

If you comment out these lines:
              case (NWXC_DISP_D3)
                 write (*,*) "hello"

The test case compiles.

Something about the macro + case statement throws the Flang front-end off.</pre>
        </div>
      </p>


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