<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/110208>110208</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-cl rejects "extern const __declspec(selectany)" variable as having "non-external linkage" when variable definition includes a struct definition
        </td>
    </tr>

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

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

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

<pre>
    Wow that title is a mouthful. Here's a concrete example:
```c++
extern const __declspec(selectany) struct { int x; } foo = { 42 };
```
clang-cl gives the error:
```
> clang-cl main.cpp
main.cpp(2,25): error: 'selectany' can only be applied to data items with external linkage
    2 | extern const __declspec(selectany) struct { int x; } foo = { 42 };
      |                         ^
1 error generated.
```
Of course, if you give the struct its own definition, the code compiles fine:
```c++
struct bar { int x; };
extern const __declspec(selectany) bar foo = { 42 };
```
MSVC compiles both without issue.
</pre>
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