1/*
2 * Copyright (c) 2006, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/*
25 * @test
26 * @bug     6471599
27 * @summary Type of rhs cannot be obtained when assigning to erroneous symbol
28 * @author  Peter von der Ah\u00e9
29 * @modules jdk.compiler/com.sun.tools.javac.util
30 * @compile Main.java
31 * @run main Main
32 */
33
34import com.sun.source.tree.AssignmentTree;
35import com.sun.source.tree.CompilationUnitTree;
36import com.sun.source.util.JavacTask;
37import com.sun.source.util.TreePath;
38import com.sun.source.util.TreePathScanner;
39import com.sun.source.util.Trees;
40import com.sun.tools.javac.util.List;
41import java.io.IOException;
42import java.net.URI;
43import javax.lang.model.type.TypeKind;
44import javax.tools.JavaCompiler;
45import javax.tools.JavaFileObject;
46import javax.tools.SimpleJavaFileObject;
47import javax.tools.ToolProvider;
48
49public class Main {
50    static class MyFileObject extends SimpleJavaFileObject {
51        public MyFileObject() {
52            super(URI.create("myfo:/Test.java"), JavaFileObject.Kind.SOURCE);
53        }
54        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
55            return "public class Test { { x = java.util.Collections.emptySet(); } }";
56        }
57    }
58    static Trees trees;
59    public static void main(String[] args) throws IOException {
60        JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
61        JavacTask task = (JavacTask) compiler.getTask(null, null, null, null, null, List.of(new MyFileObject()));
62        trees = Trees.instance(task);
63        Iterable<? extends CompilationUnitTree> asts = task.parse();
64        task.analyze();
65        for (CompilationUnitTree ast : asts) {
66            new MyVisitor().scan(ast, null);
67        }
68    }
69
70    static class MyVisitor extends TreePathScanner<Void,Void> {
71        @Override
72        public Void visitAssignment(AssignmentTree node, Void ignored) {
73            TreePath path = TreePath.getPath(getCurrentPath(), node.getExpression());
74            if (trees.getTypeMirror(path).getKind() == TypeKind.ERROR)
75                throw new AssertionError(path.getLeaf());
76            return null;
77        }
78
79    }
80}
81