[clang] Ignore DependentSizeArray in -Warray-parameter

Acknowledge we don't know how to handle those yet.

clang/lib/Sema/SemaDecl.cpp

@@ -3241,9 +3241,15 @@ static bool EquivalentArrayTypes(QualType Old, QualType New,
   }
 
   // Only compare size, ignore Size modifiers and CVR.
-  if (Old->isConstantArrayType() && New->isConstantArrayType())
+  if (Old->isConstantArrayType() && New->isConstantArrayType()) {
     return Ctx.getAsConstantArrayType(Old)->getSize() ==
            Ctx.getAsConstantArrayType(New)->getSize();
+  }
+
+  // Don't try to compare dependent sized array
+  if (Old->isDependentSizedArrayType() && New->isDependentSizedArrayType()) {
+    return true;
+  }
 
   return Old == New;
 }

clang/test/Sema/array-parameter.cpp

@@ -16,3 +16,10 @@ void func<10>(int (&Val)[10]) {
 static constexpr int Extent = 10;
 void funk(int i[10]);
 void funk(int i[Extent]); // no-warning
+
+template<int K>
+struct T {
+  static void F(int a[8 * K]);
+};
+template<int K>
+void T<K>::F(int a[8 * K]) {} // no-warning