<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 - [concepts] clang selects wrong destructor"
   href="https://bugs.llvm.org/show_bug.cgi?id=47748">47748</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[concepts] clang selects wrong destructor
          </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++2a
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>ldalessandro@gmail.com
          </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>I believe that clang should ignore the problematic destructor in this template.

```
#include <type_traits>

struct Foo {
    ~Foo() {}
};

template <typename T>
struct Bar {
    ~Bar() requires( std::is_trivially_destructible_v<T>) = default;
    ~Bar() requires(!std::is_trivially_destructible_v<T>) {}
};

Bar<Foo> bar; // <-- picks `= default` and fails
```

Working example at <a href="https://godbolt.org/z/q5Phd1">https://godbolt.org/z/q5Phd1</a>. Clang _does_ do this properly
on the default constructor side of things.</pre>
        </div>
      </p>


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