<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/144321>144321</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            Compilation error with "alignas"
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          8ss-boop
      </td>
    </tr>
</table>

<pre>
    ```
#include <stdint.h>
#include <stdarg.h>


void compute_values(int count, ...) {
    static _Atomic(int) shared_value = 0;
    va_list args;
    va_start(args, count);

    int temp[16] = {0};

    for (int i = 0; i < count && i < 16; i++) {
        int val = va_arg(args, int);
        temp[i] = (val > 0)
            ? ((val & 1) ? (temp[i ? i - 1 : 0] + val) : (shared_value += val))
            : ((alignas(16) int){ val * -1 });
 }
}
```

Compilation error: 
```
<source>:16:17: error: expected expression
   16 |             : ((alignas(16) int){ val * -1 });
      | ^
1 error generated.
Compiler returned: 1
```

https://godbolt.org/z/478dvGehr

Is this a bug?


</pre>
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