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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 --- - Name hiding in the same declarative region fails when done via using-directive" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24264&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=4QCiTI7kOCivfSw6He45HKSf07uzvp7rY1MJH2LQ6ck&s=hLPVe0ATsDmkvmE_NQKveEM85beJNLCJwJpF6sByUMo&e=">24264</a>
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<th>Summary</th>
<td>Name hiding in the same declarative region fails when done via using-directive
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>anders.granlund.0@gmail.com
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider the following well-formed program:
namespace N { struct x {}; }
using namespace N;
int x;
int main() { sizeof (x); }
Compile it with the following command line:
clang++ prog.cc -std=c++98 -pedantic-errors
Observe that error messages about name lookup ambiguity are given. I expect to
get no errors when compiling since the program is well-formed.
That the program is well-formed can be seen by applying both [namespace.udir]/2
and [basic.scope.hiding]/2:
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__eel.is_c-2B-2Bdraft_dcl.dcl-23namespace.udir-2D2&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=4QCiTI7kOCivfSw6He45HKSf07uzvp7rY1MJH2LQ6ck&s=bBA9v-JW1I1u3CeV_UfNlPPYMx6fs7j1Sm7UMWGIRHg&e=">http://eel.is/c++draft/dcl.dcl#namespace.udir-2</a>
<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__eel.is_c-2B-2Bdraft_basic.scope.hiding-232&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=4QCiTI7kOCivfSw6He45HKSf07uzvp7rY1MJH2LQ6ck&s=PGdpQkIRHrhSxOjsk-N2AcRtL0rkUTVX9310e0CEC2s&e=">http://eel.is/c++draft/basic.scope.hiding#2</a>
This seems reasonable also, so I don't think this is a defect of the c++
standard.</pre>
</div>
</p>
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