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    <head>
      <base href="https://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 --- - Clang incorrectly removes a definition"
   href="https://llvm.org/bugs/show_bug.cgi?id=27895">27895</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Clang incorrectly removes a definition
          </td>
        </tr>

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

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

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

        <tr>
          <th>OS</th>
          <td>Windows NT
          </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>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>katya_romanova@playstation.sony.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Consider the following test:

template < typename T, int N = 0 > class SafeHybridArray {
public:
  virtual T& operator [] (int aIndex);
  T ar[N+1];
};
template <typename T, int N> T& SafeHybridArray<T, N >::operator[](int i) {
return ar[i];}
extern SafeHybridArray<bool, 10> Blobs;
bool abcd(int a)
{
   return Blobs[a];
}

Clang removes a definition for SafeHybridArray<bool, 10>::operator[](int). I
don't see an explanation why this might be legal.

This started to happen after commit "r227073 - Don't let virtual calls and
dynamic casts call Sema::MarkVTableUsed()", so most likely it's a regression.</pre>
        </div>
      </p>
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