The following test fails on Linux and Windows while executing against HotSpot Server VM in -Xcomp mode.
------------ test.java -----------
import java.math.*;

public class test {
 public static void main( String[] args ) {
   double dvalue = 0.0d;
   float fvalue = 0.0f;
   Double x1, y1;
   Float x2, y2;
   if (Double.doubleToLongBits(Math.abs(dvalue)) != ((Double.doubleToLongBits(dvalue)<<1)>>>1)) {
    System.out.println( "Conversation error for Double");
   }
   if (Float.floatToIntBits(Math.abs(fvalue)) != ((Float.floatToIntBits(fvalue)<<1)>>>1)) {
    System.out.println( "Conversation error for Float");
   }

   x1 = new Double(Math.abs(dvalue));
   y1 = new Double(dvalue);
   if (!x1.equals(y1)) {
    System.out.println("Equals error for Double");
   }
   x2 = new Float(Math.abs(fvalue));
   y2 = new Float(fvalue);
   if (!x2.equals(y2)) {
    System.out.println("Equals error for Float");
   }
 }
}

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

Below is output from the test execution:
-----------------------------------------------------
%java -server -Xcomp test
Conversation error for Double
Conversation error for Float
Equals error for Double
Equals error for Float
%java -server test
%java -client -Xcomp test
%java -client test
%
-----------------------------------------------------

The JDK version is:
java version "1.3.1beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1beta-b08)
Java HotSpot(TM) Server VM (build 1.3.1beta-b08, compiled mode)

The test passes in -Xmixed and in -Xint modes against JDK 1.3.1 Server VM; as well as the test passes in all execution modes against the Client VM.
The test passes against JDK 1.3.1-b07 both Client and Server VMs in all execution modes.

The following JCK1.3 api tests fail due to this bug against JDK1.3.1beta-b08 HS Server VM in -Xcomp mode:
api/java_lang/Math/index.html#abs
api/java_lang/StrictMath/index.html#abs