<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 --- - End of non-void function reached behavior"
   href="https://llvm.org/bugs/show_bug.cgi?id=26436">26436</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>End of non-void function reached behavior
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </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>-New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>krejzi@email.com
          </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>When there's no return outside of conditional/loop/switch statement, but a
function expects a return type, clang will generate a warning, as expected.

There is one special case, and that's a switch statement where one statement
will always be true because every possible input value has been covered. In
such case, clang shouldn't return a warning, much like gcc does at the moment.

An example for such code can be found at [1]. See also [2].

[1]
<a href="https://github.com/systemd/systemd/blob/61f32bff6130a44d077886d38cff89ad161bf177/src/resolve/dns-type.c#L242">https://github.com/systemd/systemd/blob/61f32bff6130a44d077886d38cff89ad161bf177/src/resolve/dns-type.c#L242</a>
[2] <a href="https://github.com/systemd/systemd/issues/2504">https://github.com/systemd/systemd/issues/2504</a>

Linux, clang 3.8.0rc1.</pre>
        </div>
      </p>
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