<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/145521>145521</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            nested class with out-of-class-definition and requires clause fails to compile
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            new issue
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          bernd5
      </td>
    </tr>
</table>

<pre>
    The following code fails to compile:

```c++
template <typename X>
concept is_valid = true;

template<typename T>
class Nesting
{
public:
 template<typename Q> requires is_valid<Q>
    class Inner;
};

template<typename T>
template<typename Q> requires is_valid<Q>
class Nesting<T>::Inner {};
```

with the error message:

```
<source>:13:31: error: requires clause differs in template redeclaration
   13 | template<typename Q> requires is_valid<Q>
      | ^
<source>:8:35: note: previous template declaration is here
    8 |     template<typename Q> requires is_valid<Q>
 |                                   ^
1 error generated.
Compiler returned: 1
```
</pre>
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