<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 rejects both "const" and "const*" as type-name inside _Generic"
   href="https://bugs.llvm.org/show_bug.cgi?id=48799">48799</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Clang rejects both "const" and "const*" as type-name inside _Generic
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>11.0
          </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>C
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>cuoq@trust-in-soft.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The _Generic construction expects a type-name in each association:
<a href="https://cigix.me/c17#6.5.1.1.p1">https://cigix.me/c17#6.5.1.1.p1</a>

It seems to me and to GCC that "const" and "const*" are type-name
(<a href="https://cigix.me/c17#6.7.7.p1">https://cigix.me/c17#6.7.7.p1</a> )

However, Clang rejects each of the last two lines of the following function
with the message â€œerror: expected a type”.

int main(void) {
    const x = sizeof (const) + _Alignof ( const );
    const *p = &(const){1};

    _Generic(x, const :1,int:2);
    _Generic(&x, const *:3,int*:4);
}

Compiler Explorer link: <a href="https://gcc.godbolt.org/z/8aYec8">https://gcc.godbolt.org/z/8aYec8</a></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>