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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 - The std::function call throws std::exception for unclear reason"
   href="https://bugs.llvm.org/show_bug.cgi?id=42454">42454</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>The std::function call throws std::exception for unclear reason
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>8.0
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>FreeBSD
          </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>yuri@tsoft.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>Created <span class=""><a href="attachment.cgi?id=22171" name="attach_22171" title="testcase-std::function.cpp">attachment 22171</a> <a href="attachment.cgi?id=22171&action=edit" title="testcase-std::function.cpp">[details]</a></span>
testcase-std::function.cpp

The attached testcase calls std::function<void(const std::string&)> twice.

The second invocation throws std::exception when compiled with .

When it is compiled with gcc8 it throws bad_function_call.

It's not clear why should any exception be thrown at all. Why can't it call the
same function again from the lambda function?

FreeBSD 12. Tried clang8, clang7, clang6.</pre>
        </div>
      </p>


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