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.
2026-03-26 17:11:57 -04:00 · 2026-03-26 17:11:57 -04:00 · 0a580b313d
commit 0a580b313d
70422 changed files with 17213626 additions and 0 deletions
--- a/test/jdk/java/math/BigDecimal/NegateTests.java
+++ b/test/jdk/java/math/BigDecimal/NegateTests.java
@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2005, 2025, Oracle and/or its affiliates. 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 6325535
+ * @summary Test for the rounding behavior of negate(MathContext)
+ */
+
+import java.math.*;
+
+public class NegateTests {
+
+    static BigDecimal negateThenRound(BigDecimal bd, MathContext mc) {
+        return bd.negate().plus(mc);
+    }
+
+
+    static BigDecimal absThenRound(BigDecimal bd, MathContext mc) {
+        return bd.abs().plus(mc);
+    }
+
+
+    static int negateTest(BigDecimal[][] testCases,  MathContext mc) {
+        int failures = 0;
+
+        for (BigDecimal [] testCase : testCases) {
+
+            BigDecimal bd = testCase[0];
+            BigDecimal neg1 = bd.negate(mc);
+            BigDecimal neg2 = negateThenRound(bd, mc);
+            BigDecimal expected = testCase[1];
+
+            if (! neg1.equals(expected) ) {
+                failures++;
+                System.err.println("(" + bd + ").negate(" + mc + ") => " +
+                                   neg1 + " != expected " + expected);
+            }
+
+            if (! neg1.equals(neg2) ) {
+                failures++;
+                System.err.println("(" + bd + ").negate(" + mc + ")  => " +
+                                   neg1 + " != ntr " + neg2);
+            }
+
+            // Test abs consistency
+            BigDecimal abs = bd.abs(mc);
+            BigDecimal expectedAbs = absThenRound(bd,mc);
+            if (! abs.equals(expectedAbs) ) {
+                failures++;
+                System.err.println("(" + bd + ").abs(" + mc + ")  => " +
+                                   abs + " != atr " +  expectedAbs);
+            }
+
+        }
+
+        return failures;
+    }
+
+    static int negateTests() {
+        int failures = 0;
+        BigDecimal [][] testCasesCeiling = {
+            {new BigDecimal("1.3"),     new BigDecimal("-1")},
+            {new BigDecimal("-1.3"),    new BigDecimal("2")},
+        };
+
+        failures += negateTest(testCasesCeiling,
+                               new MathContext(1, RoundingMode.CEILING));
+
+        BigDecimal [][] testCasesFloor = {
+            {new BigDecimal("1.3"),     new BigDecimal("-2")},
+            {new BigDecimal("-1.3"),    new BigDecimal("1")},
+        };
+
+        failures += negateTest(testCasesFloor,
+                               new MathContext(1, RoundingMode.FLOOR));
+
+        return failures;
+    }
+
+    public static void main(String argv[]) {
+        int failures = 0;
+
+        failures += negateTests();
+
+        if (failures > 0 )
+            throw new RuntimeException("Incurred " + failures + " failures" +
+                                       " testing the negate and/or abs.");
+    }
+}