<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 - Duplicated error message "expected a qualified name after 'typename'""
   href="https://bugs.llvm.org/show_bug.cgi?id=46439">46439</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Duplicated error message "expected a qualified name after 'typename'"
          </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>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>Frontend
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>haoxintu@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>This code, bug.cc, clang emits two duplicated error messages

$cat bug.cc
void 
foo1
(typename )
{}

typedef int A;
void
foo2
(typename ::A)
{}

$clang++-trunk -c bug.cc
bug.cc:3:11: error: expected a qualified name after 'typename'
(typename )
          ^
bug.cc:3:11: error: expected a qualified name after 'typename'
2 errors generated.

The function foo2() is compiled well, but foo1() emits the duplicated messages,
so I guess clang might have something wrong with diagnostic information in this
case.   

I have tested it in almost all clang versions, and they all have this issue.</pre>
        </div>
      </p>


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