<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/70648>70648</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Public member alias template cannot access private member
        </td>
    </tr>

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

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

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

<pre>
    Clang 17.0.1 gives an error when compiling the following example (GCC and MSVC accept it):
```cpp
class S
{
 template <class T>
    static T foo();

public:
    using A = decltype(foo<int>());

    template <class T>
    using B = decltype(foo<T>());
};

S::A f(); // ok
S::B<int> g(); // not ok
```

Godbolt link: https://godbolt.org/z/oE11bY6zh

Full error:
```
<source>:13:24: error: 'foo' is a private member of 'S'
 13 |     using B = decltype(foo<T>());
      | ^~~~~~
<source>:7:14: note: implicitly declared private here
    7 | static T foo();
      |              ^
1 error generated.
Compiler returned: 1
```
</pre>
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