java/8298: Incomplete enforcement of constant expressions in switch/case

mcmartin@stanford.edu mcmartin@stanford.edu
Mon Oct 21 00:56:00 GMT 2002


>Number:         8298
>Category:       java
>Synopsis:       Incomplete enforcement of constant expressions in switch/case
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          accepts-illegal
>Submitter-Id:   net
>Arrival-Date:   Mon Oct 21 00:56:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     mcmartin@stanford.edu
>Release:        gcj 3.2
>Organization:
>Environment:

>Description:
The GCJ front-end should reject this, as the cases y.a and y.b don't match the definition of ConstantExpression in section 15.28 of the JLS (as required for cases in a switch in section 14.10 of the JLS):

public class test {
    static final int a = 1;
    static final int b = 2;

    public static void main(String[] args) {
	int x = 2;
	test y = new test();
	switch(x) {
	case y.a:
	    System.out.println("Equal to a");
	    break;
	case y.b:
	    System.out.println("Equal to b");
	    break;
	default:
	    System.out.println("Something random");
	    break;
	}
    }
}
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:



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