Name: tb29552 Date: 05/31/2002


% cat -n badscope.java
     1 public class badscope {
     2 public static final void main(String args[])
     3 {
     4 // this line should be here
     5 try {
     6 System.out.println("hi!");
     7 } catch (Exception e) {
     8 e.printStackTrace();
     9 } finally {
    10 System.out.println("done");
    11 }
    12 }
    13 }

badscope.java generates the following bytecodes and line
numbers (using the 1.4 FCS javac and javap (build 1.4.0-b92)):

% javap -c -l badscope
Compiled from badscope.java
public class badscope extends java.lang.Object {
    public badscope();
    public static final void main(java.lang.String[]);
}

Method badscope()
   0 aload_0
   1 invokespecial #1 <Method java.lang.Object()>
   4 return

Line numbers for method badscope()
   line 1: 0

Local variables for method badscope()
   badscope this pc=0, length=5, slot=0

Method void main(java.lang.String[])
   0 getstatic #2 <Field java.io.PrintStream out>
   3 ldc #3 <String "hi!">
   5 invokevirtual #4 <Method void println(java.lang.String)>
   8 jsr 31
  11 goto 42
  14 astore_1
  15 aload_1
  16 invokevirtual #6 <Method null>
  19 jsr 31
  22 goto 42
  25 astore_2
  26 jsr 31
  29 aload_2
  30 athrow
  31 astore_3
  32 getstatic #2 <Field java.io.PrintStream out>
  35 ldc #7 <String "done">
  37 invokevirtual #4 <Method void println(java.lang.String)>
  40 ret 3
  42 return
Exception table:
   from to target type
     0 8 14 <Class java.lang.Exception>
     0 11 25 any
    14 22 25 any
    25 29 25 any

Line numbers for method void main(java.lang.String[])
   line 6: 0
   line 7: 8
   line 8: 14
   line 9: 19
   line 10: 25
   line 12: 42

Local variables for method void main(java.lang.String[])
   java.lang.String[] args pc=0, length=43, slot=0
   java.lang.Exception e pc=15, length=27, slot=1

---------------------------------------------------------

It would make more sense for the goto after a jsr to be
in the line number range of the target or the last close
curly brace of the finally clause; once we have executed
the finally clause we are no longer "within" it.


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