--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/test/tools/javac/T6654037.java	Fri Jan 29 16:06:51 2010 -0800
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2008-2010 Sun Microsystems, 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6654037
+ * @summary JCTree.pos may be incorrect for BinaryTrees
+ */
+
+import com.sun.source.tree.BinaryTree;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.tree.MethodTree;
+import com.sun.source.tree.VariableTree;
+import com.sun.tools.javac.api.JavacTaskImpl;
+import com.sun.tools.javac.tree.JCTree;
+import java.net.URI;
+import java.util.Arrays;
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import javax.tools.ToolProvider;
+
+public class T6654037 {
+
+    public static void main(String[] args) throws Exception {
+        final String bootPath = System.getProperty("sun.boot.class.path"); //NOI18N
+        final JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
+        assert tool != null;
+
+        String code = "package test; public class Test {private void test() {Object o = null; boolean b = o != null && o instanceof String;} private Test() {}}";
+
+        JavacTaskImpl ct = (JavacTaskImpl) tool.getTask(null, null, null, Arrays.asList("-bootclasspath", bootPath, "-Xjcov"), null, Arrays.asList(new MyFileObject(code)));
+        CompilationUnitTree cut = ct.parse().iterator().next();
+        ClassTree clazz = (ClassTree) cut.getTypeDecls().get(0);
+        MethodTree method = (MethodTree) clazz.getMembers().get(0);
+        VariableTree condSt = (VariableTree) method.getBody().getStatements().get(1);
+        BinaryTree cond = (BinaryTree) condSt.getInitializer();
+        JCTree condJC = (JCTree) cond;
+
+        if (condJC.pos != 93)
+            throw new IllegalStateException("Unexpected position=" + condJC.pos);
+    }
+
+    static class MyFileObject extends SimpleJavaFileObject {
+        private String text;
+        public MyFileObject(String text) {
+            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
+            this.text = text;
+        }
+        @Override
+        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
+            return text;
+        }
+    }
+}