<html>
    <head>
      <base href="https://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 --- - Link error with variable template"
   href="https://llvm.org/bugs/show_bug.cgi?id=23234">23234</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Link error with variable template
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>trunk
          </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>C++14
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>ldionne.2@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following code does not link with Clang r234717:

------------------------------------------------------------------------------
struct f {
    void operator()() const { }
};

template <typename T>
auto vtemplate = f{};

int main() {
    vtemplate<int>();
}
------------------------------------------------------------------------------

Something curious is that replacing

    auto vtemplate = f{};
by
    f vtemplate{};

resolves the problem. Also note that I think the problem was introduced 
recently, because I could almost swear that this compiled fine about a 
week ago.


The exact output is:
› ~/code/llvm/release/bin/clang++ -std=c++1y ~/code/hana/test/worksheet.cpp
Undefined symbols for architecture x86_64:
  "vtemplate<int>", referenced from:
      _main in worksheet-0a36a3.o
ld: symbol(s) not found for architecture x86_64</pre>
        </div>
      </p>
      <hr>
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