<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/125952>125952</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            On Windows, can't create constexpr assignment for function pointer of function marked with dllimport
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          cgagnon-mw
      </td>
    </tr>
</table>

<pre>
    I couldn't find this issue reported here, but if it's already been handled, feel free to archive this.

This code compiles on Mac and Linux (using the equivalent import/export annotations), but not on Windows:
```cpp
class __declspec(dllimport) MyClass {
 public:
     int* foo(int) const;
};
static constexpr auto(MyClass::*bar)(int) const = &MyClass::foo;
```

Here's the error output:
```txt
<source>:6:33: error: constexpr variable 'bar' must be initialized by a constant expression
static constexpr auto(MyClass::*bar)(int) const = &MyClass::foo;
 ^                 ~~~~~~~~~~~~~
```

The program compiles on Windows if you replace `dllimport` with `dllexport`.
It also compiles if you simply remove `constexpr`. Using `constinit` gives essentially the same error.

Here's a similar issue report for MSVC (not authored by me). 
https://developercommunity.visualstudio.com/t/cannot-constinitconstexpr-initialize-a/10456333
</pre>
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