BUG: Java Compiler Does Not Report Case Labels Out of Range

• Microsoft Visual J++, versions 1.0, 1.1

SYMPTOMS

When using an integral type for a switch statement, the Microsoft Java Compiler, Jvc.exe, does not report if a case label is out of range.

RESOLUTION

To work around this problem, you need to manually check that all integral types are within range.

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

Steps to Reproduce Behavior

The following code reproduces this problem:

   public class IntegralTest
   {
        public static void main(String args[])
        {
            byte b = 127;          //byte range from -128 to 127
            switch(b)
            {
                  case 256:        //should be a compile-time error
            }
        }
   }

REFERENCES

For the latest Knowledge Base articles and other support information on Visual J++ and the SDK for Java, see the following page on the Microsoft Technical Support site:

   http://support.microsoft.com/support/visualj/
   http://support.microsoft.com/support/java/

Keywords          : kbtool CmdLnUtils VJGenIss
Technology        : kbInetDev
Version           : 1.0 1.1
Platform          : WINDOWS
Issue type        : kbbug