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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 - Wunreachable-code warns that [[likely]] and [[unlikely]] are unreachable"
   href="https://bugs.llvm.org/show_bug.cgi?id=52103">52103</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Wunreachable-code warns that [[likely]] and [[unlikely]] are unreachable
          </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>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>C++2a
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>nicolasweber@gmx.de
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>$ cat foo.cc
int main(int argc, char* argv[]) {
  if (argc > 100) [[unlikely]]
    return 1;

  return 0;
}

$ out/gn/bin/clang -Wunreachable-code -c foo.cc -std=c++20 
foo.cc:2:19: warning: code will never be executed [-Wunreachable-code]
  if (argc > 100) [[unlikely]]
                  ^~~~~~~~~~~~


That's pretty silly.

(There's also <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - -Wunreachable-code should not complain about unreachable declarations."
   href="show_bug.cgi?id=19020">bug 19020</a>; not quite sure if this is a dupe of that or not.)</pre>
        </div>
      </p>


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