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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - clang++ doesn't diagnose One Reference Rule violation"
href="https://bugs.llvm.org/show_bug.cgi?id=38142">38142</a>
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<th>Summary</th>
<td>clang++ doesn't diagnose One Reference Rule violation
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</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>zhonghao@pku.org.cn
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</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The code is as follows:
template<typename>
struct X { };
struct B { };
struct A {
typedef X<int> X;
};
It is ill-formed but clang++ fails to diagnose
it: The name 'X' refers to different declarations in its
context and when re-evaluated in the completed scope of A.
g++ rejects the code:
1name-lookup2.C.cpp:7:19: error: declaration of 'typedef struct X<int> A::X'
[-fpermissive]
typedef X<int> X;
^
1name-lookup2.C.cpp:2:8: error: changes meaning of 'X' from 'struct X<int>'
[-fpermissive]
struct X { };</pre>
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