Sets root on context if null

src/main/java/ognl/Ognl.java

@@ -399,17 +399,18 @@ public static Object getValue(Object tree, OgnlContext context, Object root) thr
      */
     public static Object getValue(Object tree, OgnlContext context, Object root, Class<?> resultType) throws OgnlException {
         Object result;
+        OgnlContext ognlContext = addDefaultContext(root, context);
 
         Node node = (Node) tree;
 
         if (node.getAccessor() != null) {
-            result = node.getAccessor().get(context, root);
+            result = node.getAccessor().get(ognlContext, root);
         } else {
-            result = node.getValue(context, root);
+            result = node.getValue(ognlContext, root);
         }
 
         if (resultType != null) {
-            result = getTypeConverter(context).convertValue(context, root, null, null, result, resultType);
+            result = getTypeConverter(ognlContext).convertValue(ognlContext, root, null, null, result, resultType);
         }
         return result;
     }

src/test/java/ognl/test/ShortCircuitingExpressionTest.java

@@ -60,6 +60,43 @@ void shouldThrowException() {
         }
     }
 
+    public static class B {
+        private String b;
+
+        public B(String b) {
+            this.b = b;
+        }
+
+        public String getB() {
+            return b;
+        }
+    }
+
+    public static class Params {
+        public B[] params;
+
+        public Params(B[] params) {
+            this.params = params;
+        }
+
+        public B[] getParams() {
+            return params;
+        }
+    }
+
+    @Test
+    void shouldCompare() throws OgnlException {
+        Object root = new Params(new B[]{new B("a")});
+
+        OgnlContext ctx = Ognl.createDefaultContext(null);
+
+        Object val1 = Ognl.getValue("\"a\".equals(params[0].b)", ctx, root);
+        Object val2 = Ognl.getValue("\"a\".equals(params[0].b)", root);
+
+        assertEquals(Boolean.TRUE, val1);
+        assertEquals(Boolean.TRUE, val2);
+    }
+
     private static Stream<Arguments> testValues() {
         return Stream.of(
                 Arguments.of("#root ? someProperty : 99", 99),