<html>
    <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 - Captured variables stored twice into task"
   href="https://bugs.llvm.org/show_bug.cgi?id=45047">45047</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Captured variables stored twice into task
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>OpenMP
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>Clang Compiler Support
          </td>
        </tr>

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

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

        <tr>
          <th>CC</th>
          <td>andrey.churbanov@intel.com, jonathan.l.peyton@intel.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>In the following simple example we store A twice into the task structure
(<a href="https://godbolt.org/z/Wq9xx6">https://godbolt.org/z/Wq9xx6</a>). The second time is especially problematic since
we use the hardcoded 40 byte offset from the `task_alloc` return instead of
loading the `shared` pointer value (first in the task struct).

void foo(int *A) {
    #pragma omp task
    {
        *A = 0;
    }
}</pre>
        </div>
      </p>


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