Name: diC59631 Date: 08/19/98


The compiler crashed when trying to compile this
code.

public class PrintUpClass {

  public static void print(Class c) {

    for (int step=0; c != null ; c = c.getSuperclass(), step++) {

      //print the "steps" up the inheritance tree

      System.out.println(step);

      
      //print the name of the class
      //System.out.println(c.getName());
      System.out.println(c);


    }

  }


  public static void main(String[] argv) throws Exception {

    if (argv.length == 0) {
      print(String.class);
    } else if (argv.length == 1) {
      print( Class.class.forName(argv[0]) );
    } else {
      System.err.println("only one argument is allowed");
      System.exit(-1);
    }

  }

}



Here was the stack trace.

java.lang.NullPointerException
        at sun.tools.tree.ConditionalExpression.costInline(ConditionalExpression.java:159)
        at sun.tools.tree.NaryExpression.costInline(NaryExpression.java:63)
        at sun.tools.tree.MethodExpression.costInline(MethodExpression.java:543)
        at sun.tools.tree.NaryExpression.costInline(NaryExpression.java:66)
        at sun.tools.tree.MethodExpression.costInline(MethodExpression.java:543)
        at sun.tools.tree.ExpressionStatement.costInline(ExpressionStatement.java:73)
        at sun.tools.tree.IfStatement.costInline(IfStatement.java:117)
        at sun.tools.tree.IfStatement.costInline(IfStatement.java:120)
        at sun.tools.java.FieldDefinition.cleanup(FieldDefinition.java:509)
        at sun.tools.java.ClassDefinition.cleanup(ClassDefinition.java:1180)
        at sun.tools.javac.Main.compile(Main.java:369)
        at sun.tools.javac.Main.main(Main.java:521)
(Review ID: 37255)
======================================================================