diff -r 3a1f262311cf -r d2a5a7a0e167 rt/emul/compacttest/src/test/java/org/apidesign/bck2brwsr/tck/LongArithmeticTest.java
--- a/rt/emul/compacttest/src/test/java/org/apidesign/bck2brwsr/tck/LongArithmeticTest.java	Wed Nov 19 19:32:00 2014 +0100
+++ b/rt/emul/compacttest/src/test/java/org/apidesign/bck2brwsr/tck/LongArithmeticTest.java	Wed Jan 07 14:17:22 2015 +0100
@@ -38,7 +38,7 @@
     private static long mul(long x, long y) {
         return (x * y);
     }
-
+    
     private static long div(long x, long y) {
         return (x / y);
     }
@@ -82,6 +82,14 @@
     private static double dadd(double x, double y) {
         return x + y;
     }
+    
+    private static long mul64shr64(long base, int mul, int shr) {
+        long tmp = base * mul;
+        if (shr == -1) {
+            return tmp;
+        }
+        return tmp >> shr;
+    }
 
     public static int compare(long x, long y, int zero) {
         final int xyResult = compareL(x, y, zero);
@@ -411,6 +419,21 @@
         return compare(0x8000000000000000l, 0x7fffffffffffffffl, 0);
     }
     
+    @Compare public int intConversionProblemInRandom() {
+        long res = mul64shr64(16, 1561751147, 31);
+        return (int) res;
+    }
+
+    @Compare public long shiftProblemInRandom() {
+        long res = mul64shr64(16, 1561751147, 31);
+        return res;
+    }
+
+    @Compare public long multiplyProblemInRandom() {
+        long res = mul64shr64(16, 1561751147, -1);
+        return res;
+    }
+    
     @Factory
     public static Object[] create() {
         return VMTest.create(LongArithmeticTest.class);