<html>
    <head>
      <base href="http://llvm.org/bugs/" />
    </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 --- - Apple LLVM 6.0 (based on LLVM 3.5.0) hangs while compiling this code"
   href="http://llvm.org/bugs/show_bug.cgi?id=21171">21171</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Apple LLVM 6.0 (based on LLVM 3.5.0) hangs while compiling this code
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </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>LLVM Codegen
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>elviss@elviss.lv
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Compiling the following code with Apple's LLVM 6.0 (Xcvode 6) hangs the clang.
Optimisation must be enabled.

Running "clang -O1 -c foo.c" on the following code hangs the clang forever.
This doesn't happen with original LLVM and other LLVM versions.

void foo()
{
        int a = 1;

        while (1)
        {
                if (a)
                {
                        label:
                        a += 2;
                        a *= (long)&&label;
                }
        }
}</pre>
        </div>
      </p>
      <hr>
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      <ul>
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