<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 - inconsistent alignment passed for array allocation and deallocation when alignof(cookie) > alignof(T)"
   href="https://bugs.llvm.org/show_bug.cgi?id=51629">51629</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>inconsistent alignment passed for array allocation and deallocation when alignof(cookie) > alignof(T)
          </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>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++17
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>richard-llvm@metafoo.co.uk
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Testcase:

```
struct X { ~X(); int c; };
extern int n;
X *p = new X[n];
void f() { delete [] p; }
```

On x86_64, under `-faligned-new=2`, this passes `align_val_t{8}` to `operator
new[]` but passes `align_val_t{4}` to `operator delete[]`.

Presumably we should consistently either always or never take the array
cookie's alignment into account when synthesizing the `align_val_t` argument;
always taking it into account seems like the better choice.</pre>
        </div>
      </p>


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