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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - redifinition of friend function doesn't result in error"
href="https://bugs.llvm.org/show_bug.cgi?id=36374">36374</a>
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<th>Summary</th>
<td>redifinition of friend function doesn't result in error
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</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>
</tr>
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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>timshen91@gmail.com
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</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<p>
<div>
<pre>template <typename Derived>
struct A {
friend Derived operator+(const Derived& a, const Derived& b) {
return Derived(a, b);
}
};
struct B : A<B> {
B() = default;
B(B, B) {}
friend B operator+(const B& a, const B& b) { return B(a, b); }
};
void Foo() {
B a, b, c = a + b;
(void)c;
}
The example above should not compile, as there are two definitions for the
operator+.</pre>
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