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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW " title="NEW --- - Using declaration" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24123&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=0SuQQXziBgKPAqfCTmTrQx8GWPj-pm2FQaYggXlvOUw&s=8gZVMQfuJThgf3AlvcL0D8XAO9X6ylPblnu7zDyh5Gs&e=">24123</a>
</td>
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<th>Summary</th>
<td>Using declaration
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>All
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>anders.granlund.0@gmail.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider the following program:
namespace N {
extern int x;
}
int main() {
using N::x;
extern int x;
}
Compiling it gives the following error output (i have tried with trunk 242150):
7:16: error: declaration conflicts with target of using declaration already in
scope
extern int x;
^
2:16: note: target of using declaration
extern int x;
^
6:14: note: using declaration
using N::x;
^
For comparison I tried it with GCC also (trunc 201507) and got no errors. I
think that is the correct behaviour, but it could be that GCC is wrong or that
this is an ambiguity in the c++ standard.</pre>
</div>
</p>
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