Store reference to the target class in MH object.

Previously MH object only stored pointer to ArtField / ArtMethod
and GC could unload target class.

Bug: 366474683
Test: ./art/test/testrunner/testrunner.py --host --64 -b
Test: ./art/test/testrunner/testrunner.py --host --64 --jvm -b -t 2281-method
Test: ./art/test.py --host -g
Change-Id: I6e91fc59da7c55c15ed55fadaf796050eebb0f5e

1 files changed, 44 insertions, 0 deletions

diff --git a/test/2281-method-handle-invoke-static-class-unload/src-ex/ClassWithAMethod.java b/test/2281-method-handle-invoke-static-class-unload/src-ex/ClassWithAMethod.java
new file mode 100644
index 0000000000..a35a3c2967
--- /dev/null
+++ b/test/2281-method-handle-invoke-static-class-unload/src-ex/ClassWithAMethod.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import static java.lang.invoke.MethodType.methodType;
+
+public class ClassWithAMethod {
+    public static int method() {
+        return 1;
+    }
+
+    private static void unreachable() {
+        throw new AssertionError("unreachable");
+    }
+
+    // @ConstantMethodHandle(
+    //     kind = ConstantMethodHandle.INVOKE_STATIC,
+    //     owner = "ClassWithAMethod",
+    //     fieldOrMethodName = "method",
+    //     descriptor = "()I")
+    private static MethodHandle methodHandle() {
+        unreachable();
+        return null;
+    }
+
+    public static MethodHandle constMethodHandle() {
+        return methodHandle();
+    }
+
+}