diff -r dc33ef3ba667 -r 673532e90337 langtools/test/tools/javac/types/ScopeListenerTest.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/langtools/test/tools/javac/types/ScopeListenerTest.java Thu Jun 04 09:05:52 2015 +0200 @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2015, 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 8039262 + * @summary Ensure that using Types.membersClosure does not increase the number of listeners on the + * class's members Scope. + */ + +import com.sun.tools.javac.code.Scope; +import com.sun.tools.javac.code.Symbol; +import com.sun.tools.javac.code.Symtab; +import com.sun.tools.javac.code.Types; +import com.sun.tools.javac.file.JavacFileManager; +import com.sun.tools.javac.util.Context; +import com.sun.tools.javac.util.Names; +import java.lang.reflect.Field; +import java.util.Collection; + +public class ScopeListenerTest { + + public static void main(String[] args) throws Exception { + new ScopeListenerTest().run(); + } + + void run() throws Exception { + Context context = new Context(); + JavacFileManager.preRegister(context); + Types types = Types.instance(context); + Symtab syms = Symtab.instance(context); + Names names = Names.instance(context); + types.membersClosure(syms.stringType, true); + types.membersClosure(syms.stringType, false); + + Field listenersField = Scope.class.getDeclaredField("listeners"); + + listenersField.setAccessible(true); + + int listenerCount = + ((Collection) listenersField.get(syms.stringType.tsym.members())).size(); + + for (int i = 0; i < 100; i++) { + types.membersClosure(syms.stringType, true); + types.membersClosure(syms.stringType, false); + } + + int newListenerCount + = ((Collection) listenersField.get(syms.stringType.tsym.members())).size(); + + if (listenerCount != newListenerCount) { + throw new AssertionError("Orig listener count: " + listenerCount + + "; new listener count: " + newListenerCount); + } + + for (Symbol s : types.membersClosure(syms.stringType, true).getSymbols()) + ; + for (Symbol s : types.membersClosure(syms.stringType, false).getSymbolsByName(names.fromString("substring"))) + ; + } + +}