<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 - clang 8 RC 5 fails to compile <filesystem> on Visual Studio 2017 and Visual Studio 2019 with c++latest"
   href="https://bugs.llvm.org/show_bug.cgi?id=41132">41132</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang 8 RC 5 fails to compile <filesystem> on Visual Studio 2017 and Visual Studio 2019 with c++latest
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>8.0
          </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>enhancement
          </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>david@doublewise.net
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following program fails to compile with `/std:c++latest`:

#include <filesystem>




When using Visual Studio 2017's standard library:

C:\Program Files (x86)\Microsoft Visual
Studio\2017\Community\VC\Tools\MSVC\14.16.27023\include\experimental/filesystem(45):
error : declaration of anonymous struct must be a definition

And when using Visual Studio 2019s:

4>C:\Program Files (x86)\Microsoft Visual
Studio\2019\Preview\VC\Tools\MSVC\14.20.27404\include\experimental/filesystem(45):
error : declaration of anonymous struct must be a definition



The relevant line is:

            struct char8_t; // flag for UTF8</pre>
        </div>
      </p>


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