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    <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 - zero-as-null-pointer-constant warning on nullptr."
   href="https://bugs.llvm.org/show_bug.cgi?id=34362">34362</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>zero-as-null-pointer-constant warning on nullptr.
          </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>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>bungeman@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>With the following content in zero.cc

struct A { operator int*() { return nullptr; } };
int main() { if (nullptr == A()) {} }


$ clang++ --version
clang version 6.0.0 (trunk 312002)

$ clang++ --std=c++11 -c zero.cc -Wzero-as-null-pointer-constant
zero.cc:2:18: warning: zero as null pointer constant
[-Wzero-as-null-pointer-constant]
int main() { if (nullptr == A()) {} }
                 ^~~~~~~
                 nullptr
1 warning generated.


It appears that the user-defined conversion is getting in the way of the
detection somehow. This appears to have been introduced by D32914.</pre>
        </div>
      </p>


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