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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 - llvm-ar doesn't produce valid thin archives when combining multiple .a"
   href="https://bugs.llvm.org/show_bug.cgi?id=37530">37530</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>llvm-ar doesn't produce valid thin archives when combining multiple .a
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>tools
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </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>llvm-ar
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>dima@golovin.in
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=20322" name="attach_20322" title="resulting test2.a archive using llvm-ar">attachment 20322</a> <a href="attachment.cgi?id=20322&action=edit" title="resulting test2.a archive using llvm-ar">[details]</a></span>
resulting test2.a archive using llvm-ar

The behavior of llvm-ar is not the same with GNU ar (from GNU binutils).

To reproduce this:

1. create two empty objects:

    clang -c -x c /dev/null -o test1.o
    clang -c -x c /dev/null -o test2.o

2. archive the first object:

    llvm-ar rcSTD test1.a test1.o

3. archive the second object together with the first archive:

    llvm-ar rcsTD test2.a test2.o test1.a

4. check archive's contents:

    llvm-ar t test2.a

Expected result:

test2.o and test1.o are in the archive

Actual result:

test2.o and test1.a are in the archive

If you use GNU ar instead of llvm-ar, you will get the expected result.</pre>
        </div>
      </p>


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