test/java/lang/Throwable/SuppressedExceptions.java

*** 33,47 ****
--- 33,58 ----
  
  public class SuppressedExceptions {
      private static String message = "Bad suppressed exception information";
  
      public static void main(String... args) throws Exception {
+         noSelfSuppression();
          basicSupressionTest();
          serializationTest();
          selfReference();
      }
  
+     private static void noSelfSuppression() {
+         Throwable throwable = new Throwable();
+         try {
+             throwable.addSuppressedException(throwable);
+             throw new RuntimeException("IllegalArgumentException for self-suppresion not thrown.");
+         } catch (IllegalArgumentException iae) {
+             ; // Expected
+         }
+     }
+ 
      private static void basicSupressionTest() {
          Throwable throwable = new Throwable();
          RuntimeException suppressed = new RuntimeException("A suppressed exception.");
          AssertionError repressed  = new AssertionError("A repressed error.");
  
*** 154,165 ****
          throwable1.initCause(throwable2);
          throwable2.initCause(throwable1);
  
          throwable1.printStackTrace();
  
- 
-         throwable1.addSuppressedException(throwable1);
          throwable1.addSuppressedException(throwable2);
  
          throwable1.printStackTrace();
      }
  }
--- 165,175 ----
          throwable1.initCause(throwable2);
          throwable2.initCause(throwable1);
  
          throwable1.printStackTrace();
  
          throwable1.addSuppressedException(throwable2);
+         throwable2.addSuppressedException(throwable1);
  
          throwable1.printStackTrace();
      }
  }