<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/125942>125942</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Ungrammatical warning message "const qualifier have no effect"
        </td>
    </tr>

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

    <tr>
      <th>Assignees</th>
      <td>
            a-tarasyuk
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          a-tarasyuk
      </td>
    </tr>
</table>

<pre>
    https://godbolt.org/z/rT9zjMhe1

```cpp
struct A {};
using CA = const A;
struct B : CA {};
```

Clang trunk prints:

```shell
warning: 'const' qualifier on base class type 'CA' (aka 'const A') have no effect [-Wignored-qualifiers]
```

Of course this should say has no effect, not have no effect.

The culprit is obvious from [the source code](https://github.com/llvm/llvm-project/blob/cac67d39362b23466708e464c00ce84abe16bece/clang/include/clang/Basic/DiagnosticSemaKinds.td#L489-L494):

```cpp
def warn_qual_return_type : Warning<
  "'%0' type qualifier%s1 on return type %plural{1:has|:have}1 no effect">,
  InGroup<IgnoredQualifiers>, DefaultIgnore;
def warn_qual_base_type : Warning<
  "'%0' qualifier%s1 on base class type %2 have no effect">,
  InGroup<IgnoredQualifiers>, DefaultIgnore;
The latter says "have" when it should say "%plural{1:has|:have}1".
````

https://github.com/Quuxplusone/llvm-project/issues/46
</pre>
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