<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 fails to diagnose mismatch of enum types in prototype/function"
   href="https://bugs.llvm.org/show_bug.cgi?id=38353">38353</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang fails to diagnose mismatch of enum types in prototype/function
          </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>Linux
          </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>-New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>zhonghao@pku.org.cn
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Compile the following code, clang compiles it without error: it
should generate a diagnostic.

enum e1 {a, b};
enum e2 {c, d};

void f(enum e1);

void f(x)
  enum e2 x;
{
  return;
}

Instead, gcc rejects the above code:

gcc code0.c 
code0.c: In function 'f':
code0.c:7:10: error: argument 'x' doesn't match prototype
  enum e2 x;
          ^
code0.c:4:6: error: prototype declaration
 void f(enum e1);
      ^</pre>
        </div>
      </p>


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