<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/99630>99630</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang] nested `InitListExpr` has invalid `SourceRange`
        </td>
    </tr>

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

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

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

<pre>
    For this code:
```c
struct B {
        int Bunused;
        union {
                int Bi;
        };
};

struct A {
 struct B Ab;
};

void do_wr(struct A *a);

void fun(int i)
{
        struct A a;

        a = (struct A) {
 .Ab.Bi = i,
        };

 do_wr(&a);
}
```

The inner `InitListExpr` (the second line here) has invalid `SourceRange`:
```
InitListExpr 0x56499f84bd00 <../test/nested-ILE.c:18:17, line:20:2> 'struct A'
`-InitListExpr 0x56499f84bd48 <<invalid sloc>, line:19:12> 'struct B'
 |-ImplicitValueInitExpr 0x56499f84bdf8 <<invalid sloc>> 'int'
 `-InitListExpr 0x56499f84bd98 <col:6, col:12> 'union B::(anonymous at ../test/nested-ILE.c:3:2)' field Field 0x56499f84b228 'Bi' 'int'
 `-ImplicitCastExpr 0x56499f84bde0 <col:12> 'int' <LValueToRValue>
 `-DeclRefExpr 0x56499f84bab0 <col:12> 'int' lvalue ParmVar 0x56499f84b850 'i' 'int'
```
If I do: `((InitListExpr *)0x56499f84bd48)->getSourceRange().isInvalid()`, I receive `false` (due to obvious `<invalid sloc>`).

Is this expected? 
</pre>
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