Fix off by one errors in linear scan register allocator.

Change-Id: I65eea3cc125e12106a7160d30cb91c5d173bd405

1 files changed, 41 insertions, 0 deletions

diff --git a/test/413-regalloc-regression/src/Main.java b/test/413-regalloc-regression/src/Main.java
new file mode 100644
index 0000000000..3e649f8e57
--- /dev/null
+++ b/test/413-regalloc-regression/src/Main.java
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+
+public class Main {
+  private Object[] data;
+  private int size;
+
+  public Main() {
+    data = new Object[4];
+    size = 0;
+  }
+
+  public void removeElementAt(int index) {
+    for (int i = index; i < size - 1; i++) {
+      data[i] = data[i + 1];
+    }
+    data[--size] = null;
+  }
+
+  public static void main(String[] args) {
+    Main main = new Main();
+    main.size++;
+    main.removeElementAt(0);
+    if (main.size != 0) {
+      throw new Error("Unexpected size");
+    }
+  }
+}