<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 --- - can't cast an auto lambda with implicit void return type to function pointer"
   href="https://llvm.org/bugs/show_bug.cgi?id=25989">25989</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>can't cast an auto lambda with implicit void return type to function pointer
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.7
          </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>C++14
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>blastrock@free.fr
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi,

The following code used to compile with clang 3.6. It also works with VC++ 2015
and g++ 5.2.

  void (*f)(int) = [](auto){};

On clang 3.7, it fails with the following error:

  test.cpp:3:10: error: no viable conversion from '(lambda at test.cpp:3:20)'
to 'void (*)(int)'
    void (*f)(int) = [](auto){};
  test.cpp:3:20: note: candidate template ignored: could not match 'void'
against 'void'
    void (*f)(int) = [](auto){};

This code however does compile even with clang 3.7:

  void (*f)(int) = [](auto) -> auto {};</pre>
        </div>
      </p>
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