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      <base href="https://bugs.llvm.org/">
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    <body><span class="vcard"><a class="email" href="mailto:john.brawn@arm.com" title="John Brawn <john.brawn@arm.com>"> <span class="fn">John Brawn</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Missing error on explicit instantiation definition of undefined variable template"
   href="https://bugs.llvm.org/show_bug.cgi?id=28816">bug 28816</a>
          <br>
             <table border="1" cellspacing="0" cellpadding="8">
          <tr>
            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
          </tr>

         <tr>
           <td style="text-align:right;">Resolution</td>
           <td>---
           </td>
           <td>INVALID
           </td>
         </tr>

         <tr>
           <td style="text-align:right;">Status</td>
           <td>NEW
           </td>
           <td>RESOLVED
           </td>
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      <p>
        <div>
            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Missing error on explicit instantiation definition of undefined variable template"
   href="https://bugs.llvm.org/show_bug.cgi?id=28816#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Missing error on explicit instantiation definition of undefined variable template"
   href="https://bugs.llvm.org/show_bug.cgi?id=28816">bug 28816</a>
              from <span class="vcard"><a class="email" href="mailto:john.brawn@arm.com" title="John Brawn <john.brawn@arm.com>"> <span class="fn">John Brawn</span></a>
</span></b>
        <pre>"template<int n> int var" is actually a definition of a template variable (with
an implicit initialization to zero), so the compiler's behaviour here is fine.
If you do "template<int n> extern int var" then that _is_ a declaration, and in
that case we get the error

tmp.cpp:2:14: error: explicit instantiation of undefined variable template
'var<0>'
template int var<0>;
             ^
tmp.cpp:1:28: note: explicit instantiation refers here
template<int n> extern int var;
                           ^
1 error generated.</pre>
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