<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/115727>115727</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [libcxx]: `__uninitialized_allocator_copy` misses `std::move` before calling `__unwrap_range`
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            libc++
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          hewillk
      </td>
    </tr>
</table>

<pre>
    https://github.com/llvm/llvm-project/blob/4c4db3c943d686ff7c1fcf2dbc975e8462497efe/libcxx/include/__memory/uninitialized_algorithms.h#L585-L592

testcase:
```cpp
#include <sstream>
#include <vector>
#include <ranges>
 
int main() {
 auto is = std::istringstream{"1 2 3 4"};
  auto ints = std::views::istream<int>(is);
  std::vector v(std::from_range, std::views::counted(ints.begin(), 3));
}
```
https://godbolt.org/z/rjWeqdPj1
</pre>
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