Description Bruce Sutton 2002-09-05 17:05:06 EDT

When there are two statements on the same line, e.g.
int dummy=0; while ( a < 5 ) {
the marking of the current execution line is often wrong.

Here is a sample:
public class StepBad {

	public static void main( String[] args ) {
		int a = 1;
		int dummy=0; while ( a < 5 ) {
			a = a + 1;
			if ( a < 5 ) {
				System.out.println("still less that 5");
			} else {
				System.out.println("now at 5");
			}
		}
	}
	
}

When stepping you will go into both the "then" and the "else" portions of the if 
statement each time around the while loop (except the last time around the 
loop).

This problem does not occur if the class is compiled with JDK 1.3.1.

javap -k  on the Eclipse generated code looks like this:
 Line numbers for method void main(java.lang.String[])  
   line 5: 0                                           
   line 6: 2                                           
   line 6: 4                                           
   line 7: 7                                           
   line 8: 10                                          
   line 9: 15                                          
   line 11: 26                                         
   line 14: 39                                         

javap -k  on the JDK 1.3.1 generated code looks like this:
Line numbers for method void main(java.lang.String[])   
   line 5: 0                                            
   line 6: 2                                            
   line 7: 7                                            
   line 8: 11                                           
   line 9: 16                                           
   line 11: 27                                          
   line 6: 35                                           
   line 14: 40