<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 --- - Need an MSVC mangling for _Atomic qualifiers"
   href="https://llvm.org/bugs/show_bug.cgi?id=25384">25384</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Need an MSVC mangling for _Atomic qualifiers
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>Windows NT
          </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>Frontend
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>rnk@google.com
          </td>
        </tr>

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Boost contains this code in boost/smart_ptr/detail/sp_counted_base_clang.hpp:

typedef _Atomic( boost::int_least32_t ) atomic_int_least32_t;

inline void atomic_increment( atomic_int_least32_t * pw )
{
    __c11_atomic_fetch_add( pw, 1, __ATOMIC_RELAXED );
}

In theory boost could be changed to use std::atomic, but it'd be nice if C11
_Atomic just worked in clang-cl.

In general, we need a strategy for mangling things that MSVC doesn't know
about, like blocks.</pre>
        </div>
      </p>
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