<html>
    <head>
      <base href="https://bugs.llvm.org/">
    </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::make_shared does not perform zero initialization"
   href="https://bugs.llvm.org/show_bug.cgi?id=32002">32002</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>std::make_shared does not perform zero initialization
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>FreeBSD
          </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>martin.beran@kernun.cz
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>On FreeBSD 10.3, the following program displays "123", but "0" is expected:

#include <memory>
#include <iostream>

int main()
{
    std::make_shared<int>(123);
    std::cout << *std::make_shared<int>();
    return 0;
}

The second std::make_shared reuses the piece of memory of the first one. But it
should initialize it to zero, as if "new (ptr) int()" is called, where ptr is
the address of allocated memory.</pre>
        </div>
      </p>


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