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23 
24 /*
25  * @test
26  * @bug 8176147
27  * @summary Throw ClassFormatError exception for multiple Signature attributes
28  * @compile DupSignatureAttrs.jcod
29  * @run main TestDupSignatureAttr
30  */
31 
32 public class TestDupSignatureAttr {
main(String args[])33     public static void main(String args[]) throws Throwable {
34 
35         System.out.println("Regression test for bug 8176147");
36 
37         String[] badClasses = new String[] {
38             "DupClassSigAttrs",
39             "DupMthSigAttrs",
40             "DupFldSigAttrs",
41         };
42         String[] messages = new String[] {
43             "Multiple Signature attributes in class file",
44             "Multiple Signature attributes for method",
45             "Multiple Signature attributes for field",
46         };
47 
48         for (int x = 0; x < badClasses.length; x++) {
49             try {
50                 Class newClass = Class.forName(badClasses[x]);
51                 throw new RuntimeException("Expected ClassFormatError exception not thrown");
52             } catch (java.lang.ClassFormatError e) {
53                 if (!e.getMessage().contains(messages[x])) {
54                     throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
55                                                e.getMessage());
56                 }
57             }
58         }
59 
60         // Multiple Signature attributes but no duplicates.
61         Class newClass = Class.forName("OkaySigAttrs");
62     }
63 }
64