Merge "Avoid visiting find array class cache as roots"
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index 5ff4bc1..370ea5c 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -1023,9 +1023,9 @@
   class_roots_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal));
   VisitClassRoots(visitor, flags);
   array_iftable_.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal));
-  for (GcRoot<mirror::Class>& root : find_array_class_cache_) {
-    root.VisitRootIfNonNull(visitor, RootInfo(kRootVMInternal));
-  }
+  // Instead of visiting the find_array_class_cache_ drop it so that it doesn't prevent class
+  // unloading if we are marking roots.
+  DropFindArrayClassCache();
 }
 
 class VisitClassLoaderClassesVisitor : public ClassLoaderVisitor {
diff --git a/runtime/native/java_lang_Class.cc b/runtime/native/java_lang_Class.cc
index 5da15df..3a73900 100644
--- a/runtime/native/java_lang_Class.cc
+++ b/runtime/native/java_lang_Class.cc
@@ -522,6 +522,10 @@
   }
   if (classes == nullptr) {
     // Return an empty array instead of a null pointer.
+    if (soa.Self()->IsExceptionPending()) {
+      // Pending exception from GetDeclaredClasses.
+      return nullptr;
+    }
     mirror::Class* class_class = mirror::Class::GetJavaLangClass();
     mirror::Class* class_array_class =
         Runtime::Current()->GetClassLinker()->FindArrayClass(soa.Self(), &class_class);