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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Lookup of operator[] succeeds when should be ambiguous"
href="https://llvm.org/bugs/show_bug.cgi?id=26850">26850</a>
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<th>Summary</th>
<td>Lookup of operator[] succeeds when should be ambiguous
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++14
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>barry.revzin@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider the following reduced code example from a StackOverflow question
(<a href="http://stackoverflow.com/q/35373384/2069064">http://stackoverflow.com/q/35373384/2069064</a>):
struct X{};
struct Y{};
struct B
{
void operator[](X){}
};
struct C
{
void operator[](Y){}
};
struct D : B, C {};
int main()
{
D d;
d[Y()];
}
The call to D::operator[] should be ambiguous due to the two different base
class overloads. A call to d.operator[](Y()) would correctly fail to compile.</pre>
</div>
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