[clang] [Clang] allow restrict qualifier for array types with pointer types as element types (PR #120896)

[Aaron Ballman via cfe-commits]

================
@@ -1593,35 +1593,40 @@ QualType Sema::BuildQualifiedType(QualType T, SourceLocation Loc,
   // object or incomplete types shall not be restrict-qualified."
   if (Qs.hasRestrict()) {
     unsigned DiagID = 0;
-    QualType ProblemTy;
-
-    if (T->isAnyPointerType() || T->isReferenceType() ||
-        T->isMemberPointerType()) {
-      QualType EltTy;
-      if (T->isObjCObjectPointerType())
-        EltTy = T;
-      else if (const MemberPointerType *PTy = T->getAs<MemberPointerType>())
+    QualType EltTy = Context.getBaseElementType(T);
+
+    if (EltTy->isAnyPointerType() || EltTy->isReferenceType() ||
+        EltTy->isMemberPointerType()) {
+
+      if (const MemberPointerType *PTy = EltTy->getAs<MemberPointerType>())
----------------
AaronBallman wrote:

```suggestion
      if (const auto *PTy = EltTy->getAs<MemberPointerType>())
```

https://github.com/llvm/llvm-project/pull/120896