<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 --- - ambiguous operator<< for c++11 enum of type bool"
   href="https://llvm.org/bugs/show_bug.cgi?id=31229">31229</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ambiguous operator<< for c++11 enum of type bool
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </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++11
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>vik.kirilov@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following code does not compile with any clang version I have tested:

#include <iostream>

enum A : bool {
    Yup = true,
    Nop = false,
};

int main() { 
    A t = Yup;
    std::cout << t;
}

This is the error:

error: use of overloaded operator '<<' is ambiguous (with operand types
'ostream' (aka 'basic_ostream<char>') and 'A')

Here is a link to an online compiler:
<a href="http://melpon.org/wandbox/permlink/YtTxiYfVsmJR16Ih">http://melpon.org/wandbox/permlink/YtTxiYfVsmJR16Ih</a>

This issue is non-existent with gcc.

Hope this is not a duplicate... first bug report here.</pre>
        </div>
      </p>
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