<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 - Missing "export *" results in bogus error with forward-declared enum"
   href="https://bugs.llvm.org/show_bug.cgi?id=38392">38392</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Missing "export *" results in bogus error with forward-declared enum
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

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

        <tr>
          <th>OS</th>
          <td>All
          </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>Modules
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jordan_rose@apple.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=20625" name="attach_20625" title="Self-contained test case">attachment 20625</a> <a href="attachment.cgi?id=20625&action=edit" title="Self-contained test case">[details]</a></span>
Self-contained test case

I think we've decided modules without `export *` aren't that interesting, but
nonetheless they shouldn't produce bogus errors. Given this (valid) Objective-C
header:

  // <Base/Base.h>
  enum Foo : int bar;
  enum Foo : int {
    FooA,
    FooB
  };

If it's included in module Base, and module BaseUser imports Base but does not
re-export it, Clang produces an error on the first line.

  ./Base/Base.h:1:16: error: definition of 'Foo' must be imported from module
        'Base' before it is required
  enum Foo : int bar;
                 ^
  ./Base/Base.h:3:6: note: previous definition is here
  enum Foo : int {
       ^

I didn't check whether C++ modules have the same problem.</pre>
        </div>
      </p>


      <hr>
      <span>You are receiving this mail because:</span>

      <ul>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>