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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - error: non-const reference cannot bind to vector element"
href="https://bugs.llvm.org/show_bug.cgi?id=47379">47379</a>
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<th>Summary</th>
<td>error: non-const reference cannot bind to vector element
</td>
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<th>Product</th>
<td>clang
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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
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>mliska@suse.cz
</td>
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<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
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<pre>The following code can be accepted by GCC, but not with clang:
$ cat clang-vector-access.cpp
template <typename T, int N>
struct Polyfill {
using Vec __attribute__ ((vector_size (sizeof(T) * N))) = T;
Vec v;
T& operator[](int k) { return v[k]; }
};
int main()
{
Polyfill<float, 8> x, y;
x[3] = y[2];
}
$ clang++ clang-vector-access.cpp
clang-vector-access.cpp:7:40: error: non-const reference cannot bind to vector
element
T& operator[](int k) { return v[k]; }
^~~~
clang-vector-access.cpp:13:4: note: in instantiation of member function
'Polyfill<float, 8>::operator[]' requested here
x[3] = y[2];
^
1 error generated.
$ g++ clang-vector-access.cpp
I see it handy to be able to access a vector element.</pre>
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