diff -r 441de9600d40 -r 8d1c5fdcdf76 hotspot/test/compiler/jvmci/compilerToVM/ReadConfigurationTest.java
--- a/hotspot/test/compiler/jvmci/compilerToVM/ReadConfigurationTest.java	Wed Feb 15 17:40:44 2017 +0300
+++ b/hotspot/test/compiler/jvmci/compilerToVM/ReadConfigurationTest.java	Wed Feb 15 11:14:45 2017 +0100
@@ -38,6 +38,7 @@
 package compiler.jvmci.compilerToVM;
 
 import jdk.test.lib.Asserts;
+import jdk.vm.ci.hotspot.VMField;
 import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
 import jdk.vm.ci.hotspot.HotSpotVMConfigAccess;
 import jdk.vm.ci.hotspot.HotSpotVMConfigStore;
@@ -49,10 +50,19 @@
     }
 
     private void runTest() {
-        TestHotSpotVMConfig config = new TestHotSpotVMConfig(HotSpotJVMCIRuntime.runtime().getConfigStore());
+        HotSpotVMConfigStore store = HotSpotJVMCIRuntime.runtime().getConfigStore();
+        TestHotSpotVMConfig config = new TestHotSpotVMConfig(store);
         Asserts.assertNE(config.codeCacheHighBound, 0L, "Got null address");
         Asserts.assertNE(config.stubRoutineJintArrayCopy, 0L, "Got null address");
 
+        for (VMField field : store.getFields().values()) {
+                Object value = field.value;
+                if (value != null) {
+                    Asserts.assertTrue(value instanceof Long || value instanceof Boolean,
+                        "Got unexpected value type for VM field " + field.name + ": " + value.getClass());
+                }
+        }
+
         for (VMIntrinsicMethod m : config.getStore().getIntrinsics()) {
             Asserts.assertNotNull(m);
             Asserts.assertNotNull(m.declaringClass);