<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/57384>57384</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Array literals can't be passed to `constexpr` functions
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang:frontend,
            rejects-valid
      </td>
    </tr>

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

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

<pre>
    ```c++
 constexpr int add(const int f[]) {
   const int res = f[0] + f[1] + f[2];
   return res;
 }
  static_assert(add((const int[]){1, 2, 3}) == 6);
```
this does not compile with clang:

```
<source>:7:17: error: static_assert expression is not an integral constant expression
  static_assert(add((const int[]){1, 2, 3}) == 6);
                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<source>:7:34: note: destroying object '{1, 2, 3}' whose lifetime has already ended
  static_assert(add((const int[]){1, 2, 3}) == 6);
                                 ^
<source>:7:17: note: in call to 'add(&(const int[3]){1, 2, 3}[0])'
  static_assert(add((const int[]){1, 2, 3}) == 6);
                ^
1 error generated.
Compiler returned: 1
```
[Godbolt](https://godbolt.org/z/jx6zKPrY7)

It compiles in G++ and certainly looks alright for my eyes.
</pre>
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