--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Wed Sep 20 15:22:21 2017 -0700
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Thu Sep 21 17:47:34 2017 +0200
@@ -3152,10 +3152,9 @@
             nextToken();
             JCExpression pid = qualident(false);
             accept(SEMI);
-            JCPackageDecl pd = F.at(packagePos).PackageDecl(annotations, pid);
+            JCPackageDecl pd = toP(F.at(packagePos).PackageDecl(annotations, pid));
             attach(pd, firstToken.comment(CommentStyle.JAVADOC));
             consumedToplevelDoc = true;
-            storeEnd(pd, token.pos);
             defs.append(pd);
         }
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/positions/T8184739.java	Thu Sep 21 17:47:34 2017 +0200
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2017, 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     8184739
+ * @summary Check correct end position of the PackageTree
+ * @modules jdk.compiler
+ */
+
+import com.sun.source.tree.CompilationUnitTree;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.Trees;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Collections;
+import java.util.List;
+
+import javax.tools.JavaCompiler;
+import javax.tools.JavaFileObject;
+import javax.tools.SimpleJavaFileObject;
+import static javax.tools.JavaFileObject.Kind.SOURCE;
+import javax.tools.ToolProvider;
+
+import com.sun.source.tree.ImportTree;
+import com.sun.source.tree.PackageTree;
+
+public class T8184739 {
+    public static void main(String... args) throws IOException {
+        class MyFileObject extends SimpleJavaFileObject {
+            MyFileObject() {
+                super(URI.create("myfo:///Test.java"), SOURCE);
+            }
+            @Override
+            public String getCharContent(boolean ignoreEncodingErrors) {
+                //      0         1         2         3         4
+                //      0123456789012345678901234567890123456789012345
+                return "package a.b; /*foo*/ import java.lang.Object; /*foo*/ class Test { Test() { } }";
+            }
+        }
+        JavaCompiler javac = ToolProvider.getSystemJavaCompiler();
+        List<JavaFileObject> compilationUnits =
+                Collections.<JavaFileObject>singletonList(new MyFileObject());
+        JavacTask task = (JavacTask)javac.getTask(null, null, null, null, null, compilationUnits);
+        Trees trees = Trees.instance(task);
+        CompilationUnitTree toplevel = task.parse().iterator().next();
+        PackageTree pt = toplevel.getPackage();
+        ImportTree impt = toplevel.getImports().get(0);
+        long pos = trees.getSourcePositions().getStartPosition(toplevel, pt);
+        if (pos != 0)
+            throw new AssertionError(String.format("Start pos for %s is incorrect (%s)!",
+                                                   pt, pos));
+        pos = trees.getSourcePositions().getEndPosition(toplevel, pt);
+        if (pos != 12)
+            throw new AssertionError(String.format("End pos for %s is incorrect (%s)!",
+                                                   pt, pos));
+        pos = trees.getSourcePositions().getStartPosition(toplevel, impt);
+        if (pos != 21)
+            throw new AssertionError(String.format("Start pos for %s is incorrect (%s)!",
+                                                   impt, pos));
+        pos = trees.getSourcePositions().getEndPosition(toplevel, impt);
+        if (pos != 45)
+            throw new AssertionError(String.format("End pos for %s is incorrect (%s)!",
+                                                   impt, pos));
+    }
+}