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      <base href="https://bugs.llvm.org/">
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - clang++ and g++ disagree on invalid definition of std::initializer_list"
   href="https://bugs.llvm.org/show_bug.cgi?id=31946">31946</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang++ and g++ disagree on invalid definition of std::initializer_list
          </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>Windows NT
          </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>davide@freebsd.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, filcab@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=17972" name="attach_17972" title="testcase">attachment 17972</a> <a href="attachment.cgi?id=17972&action=edit" title="testcase">[details]</a></span>
testcase

If I compile the testcase attached with clang, it builds fine.
gcc, instead, complains about an invalid initializer list.

$ clang++ -O2 /home/davide/work/game8/delta-reduced.c -std=gnu++11 -fpermissive
-frtti -fexceptions -fno-strict-aliasing -fms-extensions -w -g -std=gnu++11 -c

$ g++ -O2 /home/davide/work/game8/delta-reduced.c -std=gnu++11 -fpermissive
-frtti -fexceptions -fno-strict-aliasing -fms-extensions -w -g -std=gnu++11 -c

/home/davide/work/game8/delta-reduced.c:1093:9: error: template parameters not
deducible in partial specialization:
  struct _Extent<_Ty[], _Nx>
         ^~~~~~~~~~~~~~~~~~~
/home/davide/work/game8/delta-reduced.c:1093:9: note:         '_Ix'
/home/davide/work/game8/delta-reduced.c:1656:8: fatal error: definition of
std::initializer_list does not match #include <initializer_list>
  class initializer_list
        ^~~~~~~~~~~~~~~~

Sorry for the large'ish testcase, but this is reduced from a much larger
testcase, and delta/creduce couldn't do better than this.</pre>
        </div>
      </p>


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