1 /*
2  * Copyright (c) 2015, 2016, 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 8142931
27  * @summary java compiler: type erasure doesn't work since 9-b28
28  * @modules jdk.compiler/com.sun.tools.javac.api
29  *          jdk.compiler/com.sun.tools.javac.file
30  */
31 
32 import java.io.*;
33 import java.util.*;
34 import javax.annotation.processing.*;
35 import javax.lang.model.*;
36 import javax.lang.model.element.*;
37 import javax.lang.model.util.ElementFilter;
38 import javax.lang.model.type.TypeMirror;
39 import javax.lang.model.type.DeclaredType;
40 import javax.tools.*;
41 import com.sun.source.util.*;
42 import com.sun.tools.javac.api.*;
43 
44 @SupportedAnnotationTypes("*")
45 public class T8142931 extends AbstractProcessor {
46 
47     public java.util.List<? extends javax.xml.namespace.QName> f0;
48 
main(String... args)49     public static void main(String... args) throws IOException {
50         String testSrc = System.getProperty("test.src", ".");
51         String testClasses = System.getProperty("test.classes");
52         JavaCompiler tool = ToolProvider.getSystemJavaCompiler();
53         MyDiagListener dl = new MyDiagListener();
54         try (StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, null)) {
55             Iterable<? extends JavaFileObject> files =
56                 fm.getJavaFileObjectsFromFiles(Arrays.asList(new File(testSrc, T8142931.class.getName()+".java")));
57             Iterable<String> opts = Arrays.asList(
58                 "--add-exports", "jdk.compiler/com.sun.tools.javac.api=ALL-UNNAMED",
59                 "-XDaccessInternalAPI",
60                 "-proc:only",
61                 "-processor", "T8142931",
62                 "-processorpath", testClasses);
63             StringWriter out = new StringWriter();
64             JavacTask task = (JavacTask)tool.getTask(out, fm, dl, opts, null, files);
65             task.call();
66             String s = out.toString();
67             System.err.print(s);
68             System.err.println(dl.count + " diagnostics; " + s.length() + " characters");
69             if (dl.count != 0 || s.length() != 0)
70                 throw new AssertionError("unexpected output from compiler");
71         }
72     }
73 
74     @Override
process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv)75     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
76         Set<? extends Element> set = roundEnv.getRootElements();
77         for (Element element : set) {
78             Collection<VariableElement> fields = ElementFilter.fieldsIn(((TypeElement) element).getEnclosedElements());
79             for (VariableElement field : fields) {
80                 TypeMirror listType = field.asType();
81                 List<? extends TypeMirror> typeArgs = ((DeclaredType) listType).getTypeArguments();
82                 TypeMirror arg = typeArgs.get(0);
83                 String erasure = processingEnv.getTypeUtils().erasure(arg).toString();
84                 if (!erasure.equals("javax.xml.namespace.QName"))
85                     throw new AssertionError("Wrong Erasure: " + erasure);
86             }
87         }
88         return false;
89     }
90 
91     @Override
getSupportedSourceVersion()92     public SourceVersion getSupportedSourceVersion() {
93         return SourceVersion.latest();
94     }
95 
96     static class MyDiagListener implements DiagnosticListener {
report(Diagnostic d)97         public void report(Diagnostic d) {
98             System.err.println(d);
99             count++;
100         }
101 
102         public int count;
103     }
104 }
105 
106