6931927: position issues with synthesized anonymous class

Reviewed-by: darcy

src/share/classes/com/sun/tools/javac/parser/JavacParser.java

@@ -1561,7 +1561,10 @@ public class JavacParser implements Parser {
             JCNewClass newClass = classCreatorRest(newpos, null, typeArgs, t);
             if (newClass.def != null) {
                 assert newClass.def.mods.annotations.isEmpty();
-                newClass.def.mods.annotations = List.convert(JCAnnotation.class, newAnnotations);
+                if (newAnnotations.nonEmpty()) {
+                    newClass.def.mods.pos = earlier(newClass.def.mods.pos, newAnnotations.head.pos);
+                    newClass.def.mods.annotations = List.convert(JCAnnotation.class, newAnnotations);
+                }
             }
             return newClass;
         } else {
@@ -3016,6 +3019,18 @@ public class JavacParser implements Parser {
         return (oc >= 0) ? TreeInfo.opPrec(oc) : -1;
     }
 
+    /**
+     * Return the lesser of two positions, making allowance for either one
+     * being unset.
+     */
+    static int earlier(int pos1, int pos2) {
+        if (pos1 == Position.NOPOS)
+            return pos2;
+        if (pos2 == Position.NOPOS)
+            return pos1;
+        return (pos1 < pos2 ? pos1 : pos2);
+    }
+
     /** Return operation tag of binary operator represented by token,
      *  -1 if token is not a binary operator.
      */

test/tools/javac/tree/TestAnnotatedAnonClass.java

+/*
+ * Copyright 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.
+ */
+
+
+/*
+ * This file is not a regular test, but is processed by ./TreePosTest.java,
+ * which verifies the position info in the javac tree.
+ * To run the test standalone, compile TreePosTest, then run TreePosTest
+ * on this file.
+ * @bug 6931927
+ * @summary position issues with synthesized anonymous class
+ */
+class TestAnnotatedAnonClass {
+    void m() {
+        Object o = new @Deprecated Object() { };
+    }
+}