undefect. CWE-407 — 63 sites patched across 27 ecosystems

Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.

test/hotspot/jtreg/compiler/rangechecks/TestRCMinInt.java

@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2021, Red Hat, Inc. 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
+ * @bug 8259609
+ * @summary range checks with min int scale value
+ *
+ * @run main/othervm -XX:-BackgroundCompilation TestRCMinInt
+ *
+ */
+
+import java.util.Objects;
+
+public class TestRCMinInt {
+    public static void main(String[] args) {
+        for (int i = 0; i < 20_000; i++) {
+            test1(0, 10, 10);
+            test2(0, 10, 10);
+        }
+    }
+
+    private static float test1(int start, int stop, int offset) {
+        float v = 1;
+        for (int i = start; i < stop; i+=2) {
+            final int index = offset + Integer.MIN_VALUE * i;
+            Objects.checkIndex(index, 100);
+        }
+        return v;
+    }
+
+    private static float test2(int start, int stop, int offset) {
+        float v = 1;
+        for (int i = start; i < stop; i+=2) {
+            final int index = offset - Integer.MIN_VALUE * i;
+            Objects.checkIndex(index, 100);
+        }
+        return v;
+    }
+}