<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/55549>55549</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Misrecognize lambda parameters as captures when used in requires expression
        </td>
    </tr>

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

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

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

<pre>
    https://godbolt.org/z/MKzEq9dsP

```c++
template<class T>
concept C = requires {
  requires [](int a) { return a == 42; } (sizeof(T));
};

static_assert(C<char[42]>);
```

```
<source>:6:1: error: static_assert failed
static_assert(C<char[42]>);
^             ~~~~~~~~~~~
<source>:6:15: note: because 'char[42]' does not satisfy 'C'
static_assert(C<char[42]>);
              ^
<source>:3:31: note: because substituted constraint expression is ill-formed: variable 'a' cannot be implicitly captured in a lambda with no capture-default specified
  requires [](int a) { return a == 42; }(sizeof(T));
                              ^
1 error generated.
```
</pre>
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