<html>
    <head>
      <base href="https://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - std::unique_ptr<[]> does not work with vector types"
   href="https://llvm.org/bugs/show_bug.cgi?id=26654">26654</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>std::unique_ptr<[]> does not work with vector types
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.8
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>eugeni.stepanov@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>$ cat 1.cc
#include <memory>

typedef float T __attribute__((__vector_size__(16)));

void f(T t) {
  std::unique_ptr<T[]> ptr(new T[5]);
  ptr[0] = t;
}

$ clang++ 1.cc -c -std=c++11 -stdlib=libc++
1.cc:13:10: error: expression is not assignable
  ptr[0] = get();
  ~~~~~~ ^
1 error generated.


It looks like __is_referenceable<T> is false and unique_ptr<T>::operator[]()
gets T as the return type instead of T&.</pre>
        </div>
      </p>
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