<html>
    <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 - `__has_feature(is_aggregate)` returns `false` even though `__is_aggregate` exists."
   href="https://bugs.llvm.org/show_bug.cgi?id=37513">37513</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>`__has_feature(is_aggregate)` returns `false` even though `__is_aggregate` exists.
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>5.0
          </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>enhancement
          </td>
        </tr>

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

        <tr>
          <th>Component</th>
          <td>C++
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>mcypark@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The following program prints 1, indicating that `__has_feature(is_aggregate)`
returned `false`, even though `__is_aggregate` is defined.

```
#include <iostream>

#if __has_feature(is_aggregate)
#error feature
#endif
#if __has_extension(is_aggregate)
#error extension
#endif

struct Agg {};

int main() {
  std::cout << __is_aggregate(Agg);
}
```

<a href="https://wandbox.org/permlink/mvOCKdmZGaxKoRAu">https://wandbox.org/permlink/mvOCKdmZGaxKoRAu</a></pre>
        </div>
      </p>


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