<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 - Non mutable lambdas still see some non const references"
   href="https://bugs.llvm.org/show_bug.cgi?id=46102">46102</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Non mutable lambdas still see some non const references
          </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++11
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>rafael@espindo.la
          </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>Both clang and gcc agree that the following should not compile

struct foo {
    void func();
};
void zed(const foo& v) {
    [v]() mutable {
        v.func();
    }();
}

The problem being that the member corresponding to v is now const.

But the following function compiles with clang while gcc rejects it

void bar(foo& v) {
    [v]() {
        [v]() mutable {
             v.func();
        }();
    }();
}

The operator() of the outer lambda should be const, so the v in the inner
lambda should be const too, and gcc is correct in rejecting this as far as I
can tell.</pre>
        </div>
      </p>


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