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      <base href="http://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Ambiguity between template-name and other name should be detected"
   href="http://llvm.org/bugs/show_bug.cgi?id=18486">18486</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Ambiguity between template-name and other name should be detected
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </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>C++
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>kariya_mitsuru@hotmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I think that sample code below should cause error because TEST is ambiguous.

namespace FOO {
    template<int I>
    struct FOO {};
}
using namespace FOO;
void f() { FOO<0> x; }

However, an error does not actually occur.

If above sample is well-formed, why is next code ill-formed?

template<int I>
struct FOO {};
namespace BAR {
    namespace FOO {
        void f() { FOO<0> x; }
    }
}</pre>
        </div>
      </p>
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