<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/139226>139226</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Duplicate lookup errors
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang:frontend
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          ilya-biryukov
      </td>
    </tr>
</table>

<pre>
    See https://gcc.godbolt.org/z/jo8Mv6838
```cpp
struct Foo {
    template<class T>
    void LookupWithID();
};

void test(Foo *f) {
 f->LookupWithId<Info>(); // Note: ID is misspelled as Id
}
```

Expected: one lookup error about LookupWithId.
Actual: two duplicate errors `no template named 'LookupWithId' in 'Foo'; did you mean 'LookupWithID'?`

Could this be happening because we parse tentatively twice and report the errors both times?
</pre>
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