diff test/compiler/7141637/SpreadNullArg.java @ 4874:392a3f07d567

7141637: JSR 292: MH spread invoker crashes with NULL argument on x86_32 Reviewed-by: twisti Contributed-by: Volker Simonis <volker.simonis@gmail.com>
author twisti
date Thu, 02 Feb 2012 09:14:38 -0800
parents
children 62084ffe573b
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/7141637/SpreadNullArg.java	Thu Feb 02 09:14:38 2012 -0800
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2011 SAP AG.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test SpreadNullArg
+ * @bug 7141637
+ * @summary  verifies that the MethodHandle spread adapter can gracefully handle null arguments.
+ * @run main SpreadNullArg
+ * @author volker.simonis@gmail.com
+ */
+
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+
+public class SpreadNullArg {
+
+  public static void main(String args[]) {
+
+    MethodType mt_ref_arg = MethodType.methodType(int.class, Integer.class);
+    MethodHandle mh_spreadInvoker = MethodHandles.spreadInvoker(mt_ref_arg, 0);
+    MethodHandle mh_spread_target;
+    int result = 42;
+
+    try {
+      mh_spread_target =
+        MethodHandles.lookup().findStatic(SpreadNullArg.class, "target_spread_arg", mt_ref_arg);
+      result = (int) mh_spreadInvoker.invokeExact(mh_spread_target, (Object[]) null);
+    } catch(NullPointerException e) {
+      // Expected exception - do nothing!
+    } catch(Throwable e) {
+      throw new Error(e);
+    }
+
+    if (result != 42) throw new Error("Expected NullPointerException was not thrown");
+  }
+
+  public static int target_spread_arg(Integer i1) {
+    return i1.intValue();
+  }
+
+}