6337964: should ignore last comma in annotation array

Reviewed-by: jjg

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

@@ -2236,7 +2236,7 @@ public class JavacParser implements Parser {
 
     /* AnnotationValue          = ConditionalExpression
      *                          | Annotation
-     *                          | "{" [ AnnotationValue { "," AnnotationValue } ] "}"
+     *                          | "{" [ AnnotationValue { "," AnnotationValue } ] [","] "}"
      */
     JCExpression annotationValue() {
         int pos;
@@ -2253,7 +2253,7 @@ public class JavacParser implements Parser {
                 buf.append(annotationValue());
                 while (S.token() == COMMA) {
                     S.nextToken();
-                    if (S.token() == RPAREN) break;
+                    if (S.token() == RBRACE) break;
                     buf.append(annotationValue());
                 }
             }

test/tools/javac/annotations/pos/TrailingComma.java

+/*
+ * Copyright 2009 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 6337964
+ * @summary javac incorrectly disallows trailing comma in annotation arrays
+ * @author darcy
+ * @compile TrailingComma.java
+ */
+
+import java.lang.annotation.*;
+
+@interface TestAnnotation {
+    SuppressWarnings[] value() default {@SuppressWarnings({"",})};
+}
+
+
+@TestAnnotation({@SuppressWarnings(),
+                 @SuppressWarnings({"Beware the ides of March.",}),
+                 @SuppressWarnings({"Look both ways", "Before Crossing",}), })
+public class TrailingComma {
+}