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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 --- - Redeclaration inconsistency between struct and int" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24033&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=-D-VNzmqiLAmK7k6O5fszD1Uyx-nyWCNN9Kkdjbk470&s=xa0FIaMaA72no5nTR2zdMF0Lplod9R9EimVBtjfUESY&e=">24033</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Redeclaration inconsistency between struct and int
          </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>anders.granlund.0@gmail.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>The following program gives no error when compiling with clang:

namespace X {
    struct i {};
}

namespace Y {
    using X::i;
    struct i {};
}

int main() {}

Let's use int instead of struct, then we get:

namespace X {
    int i;
}

namespace Y {
    using X::i;
    int i;
}

int main() {}

This program gives a redefinition error when compiling with clang.

The only difference between the programs is the kind of entity used (struct or
int), but one compiles without errors and the other gives a redeclaration
error.

Maybe the standard is ambiguous what a redefinition is when it comes to
using-declarations. But shouldn't a compiler make its interpretation
consistently? What is the reason for this inconsistency?</pre>
        </div>
      </p>
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