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

[Eli Friedman via cfe-commits]

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@@ -1593,34 +1593,31 @@ 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() || EltTy->isArrayType()) {
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efriedma-quic wrote:

Drop the isArrayType() here; should be impossible for EltTy to be an array here.

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