T7190862.java revision 2942:08092deced3f 
1
2/*
3 * @test /nodynamiccopyright/
4 * @bug 7190862 7109747
5 * @summary javap shows an incorrect type for operands if the 'wide' prefix is used
6 * @modules jdk.jdeps
7 */
8
9import com.sun.source.util.JavacTask;
10import com.sun.tools.javap.JavapFileManager;
11import com.sun.tools.javap.JavapTask;
12import java.io.PrintWriter;
13import java.io.StringWriter;
14import java.net.URI;
15import java.util.Arrays;
16import java.util.List;
17import java.util.Locale;
18import javax.tools.Diagnostic;
19import javax.tools.DiagnosticCollector;
20import javax.tools.JavaCompiler;
21import javax.tools.JavaFileManager;
22import javax.tools.JavaFileObject;
23import javax.tools.SimpleJavaFileObject;
24import javax.tools.ToolProvider;
25
26public class T7190862 {
27
28    enum TypeWideInstructionMap {
29        INT("int", new String[]{"istore_w", "iload_w"}),
30        LONG("long", new String[]{"lstore_w", "lload_w"}),
31        FLOAT("float", new String[]{"fstore_w", "fload_w"}),
32        DOUBLE("double", new String[]{"dstore_w", "dload_w"}),
33        OBJECT("Object", new String[]{"astore_w", "aload_w"});
34
35        String type;
36        String[] instructions;
37
38        TypeWideInstructionMap(String type, String[] instructions) {
39            this.type = type;
40            this.instructions = instructions;
41        }
42    }
43
44    JavaSource source;
45
46    public static void main(String[] args) {
47        JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
48        new T7190862().run(comp);
49    }
50
51    private void run(JavaCompiler comp) {
52        String code;
53        for (TypeWideInstructionMap typeInstructionMap: TypeWideInstructionMap.values()) {
54            if (typeInstructionMap != TypeWideInstructionMap.OBJECT) {
55                code = createWideLocalSource(typeInstructionMap.type, 300);
56            } else {
57                code = createWideLocalSourceForObject(300);
58            }
59            source = new JavaSource(code);
60            compile(comp);
61            check(typeInstructionMap.instructions);
62        }
63
64        //an extra test for the iinc instruction
65        code = createIincSource();
66        source = new JavaSource(code);
67        compile(comp);
68        check(new String[]{"iinc_w"});
69    }
70
71    private void compile(JavaCompiler comp) {
72        JavacTask ct = (JavacTask)comp.getTask(null, null, null, null, null, Arrays.asList(source));
73        try {
74            if (!ct.call()) {
75                throw new AssertionError("Error thrown when compiling the following source:\n" + source.getCharContent(true));
76            }
77        } catch (Throwable ex) {
78            throw new AssertionError("Error thrown when compiling the following source:\n" + source.getCharContent(true));
79        }
80    }
81
82    private void check(String[] instructions) {
83        String out = javap(Arrays.asList("-c"), Arrays.asList("Test.class"));
84        for (String line: out.split(System.getProperty("line.separator"))) {
85            line = line.trim();
86            for (String instruction: instructions) {
87                if (line.contains(instruction) && line.contains("#")) {
88                    throw new Error("incorrect type for operands for instruction " + instruction);
89                }
90            }
91        }
92    }
93
94    private String javap(List<String> args, List<String> classes) {
95        DiagnosticCollector<JavaFileObject> dc = new DiagnosticCollector<JavaFileObject>();
96        StringWriter sw = new StringWriter();
97        PrintWriter pw = new PrintWriter(sw);
98        JavaFileManager fm = JavapFileManager.create(dc, pw);
99        JavapTask t = new JavapTask(pw, fm, dc, args, classes);
100        if (t.run() != 0)
101            throw new Error("javap failed unexpectedly");
102
103        List<Diagnostic<? extends JavaFileObject>> diags = dc.getDiagnostics();
104        for (Diagnostic<? extends JavaFileObject> d: diags) {
105            if (d.getKind() == Diagnostic.Kind.ERROR)
106                throw new Error(d.getMessage(Locale.ENGLISH));
107        }
108        return sw.toString();
109
110    }
111
112    private String createWideLocalSource(String type, int numberOfVars) {
113        String result = "    " + type + " x0 = 0;\n";
114        for (int i = 1; i < numberOfVars; i++) {
115            result += "        " + type + " x" + i + " = x" + (i - 1) + " + 1;\n";
116        }
117        return result;
118    }
119
120    private String createWideLocalSourceForObject(int numberOfVars) {
121        String result = "    Object x0 = new Object();\n";
122        for (int i = 1; i < numberOfVars; i++) {
123            result += "        Object x" + i + " = x0;\n";
124        }
125        return result;
126    }
127
128    private String createIincSource() {
129        return "    int i = 0;\n"
130                + "        i += 1;\n"
131                + "        i += 51;\n"
132                + "        i += 101;\n"
133                + "        i += 151;\n";
134    }
135
136    class JavaSource extends SimpleJavaFileObject {
137
138        String template = "class Test {\n" +
139                          "    public static void main(String[] args)\n" +
140                          "    {\n" +
141                          "        #C" +
142                          "    }\n" +
143                          "}";
144
145        String source;
146
147        public JavaSource(String code) {
148            super(URI.create("Test.java"), JavaFileObject.Kind.SOURCE);
149            source = template.replaceAll("#C", code);
150        }
151
152        @Override
153        public CharSequence getCharContent(boolean ignoreEncodingErrors) {
154            return source;
155        }
156    }
157}
158