--- a/jdk/src/windows/native/sun/nio/ch/FileKey.c	Sat Feb 01 10:27:55 2014 -0800
+++ b/jdk/src/windows/native/sun/nio/ch/FileKey.c	Mon Feb 03 14:00:43 2014 +0000
@@ -38,9 +38,9 @@
 JNIEXPORT void JNICALL
 Java_sun_nio_ch_FileKey_initIDs(JNIEnv *env, jclass clazz)
 {
-    key_volumeSN = (*env)->GetFieldID(env, clazz, "dwVolumeSerialNumber", "J");
-    key_indexHigh = (*env)->GetFieldID(env, clazz, "nFileIndexHigh", "J");
-    key_indexLow = (*env)->GetFieldID(env, clazz, "nFileIndexLow", "J");
+    CHECK_NULL(key_volumeSN = (*env)->GetFieldID(env, clazz, "dwVolumeSerialNumber", "J"));
+    CHECK_NULL(key_indexHigh = (*env)->GetFieldID(env, clazz, "nFileIndexHigh", "J"));
+    CHECK_NULL(key_indexLow = (*env)->GetFieldID(env, clazz, "nFileIndexLow", "J"));
 }