[clang] [clang-tools-extra] [Clang] [Sema] Diagnose unknown std::initializer_list layout in SemaInit (PR #95580)

[via cfe-commits]

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@@ -10528,48 +10528,37 @@ bool RecordExprEvaluator::VisitCXXStdInitializerListExpr(
   // Get a pointer to the first element of the array.
   Array.addArray(Info, E, ArrayType);
 
-  auto InvalidType = [&] {
-    Info.FFDiag(E, diag::note_constexpr_unsupported_layout)
-      << E->getType();
-    return false;
-  };
-
-  // FIXME: Perform the checks on the field types in SemaInit.
-  RecordDecl *Record = E->getType()->castAs<RecordType>()->getDecl();
-  RecordDecl::field_iterator Field = Record->field_begin();
-  if (Field == Record->field_end())
-    return InvalidType();
-
-  // Start pointer.
-  if (!Field->getType()->isPointerType() ||
-      !Info.Ctx.hasSameType(Field->getType()->getPointeeType(),
-                            ArrayType->getElementType()))
-    return InvalidType();
-
   // FIXME: What if the initializer_list type has base classes, etc?
----------------
Sirraide wrote:

```suggestion
```
We can remove this FIXME here (see also another comment of mine below).

https://github.com/llvm/llvm-project/pull/95580