<html>
    <head>
      <base href="http://llvm.org/bugs/" />
    </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 --- - tuple constructor accepts less arguments than the tuple has values"
   href="http://llvm.org/bugs/show_bug.cgi?id=22362">22362</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>tuple constructor accepts less arguments than the tuple has values
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libc++
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>normal
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>All Bugs
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>bugs+llvm+org@sebastianhahn.net
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>I'm expecting this code to not compile:

    std::tuple<unsigned, unsigned> t(1);

but it does (and it behaves as if I had provided 1 and 0). It was suggested to
me that this stems from an implementation of N4064 as detailed in
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4064.html">http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4064.html</a> - but I'm
not spotting it there, and I find it rather surprising that this should work.

It caused a bug where I emplace()d a tuple into a vector and provided one
argument too few. This should imho be at least a warning if it cannot be an
error.</pre>
        </div>
      </p>
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