--- a/test/hotspot/jtreg/vmTestbase/gc/gctests/nativeGC05/libnativeGC05.c	Fri May 18 12:32:32 2018 -0700
+++ b/test/hotspot/jtreg/vmTestbase/gc/gctests/nativeGC05/libnativeGC05.c	Fri May 18 12:45:05 2018 -0700
@@ -27,7 +27,7 @@
 Java_gc_gctests_nativeGC05_nativeGC05_kickOffRefillers
 (JNIEnv *env, jobject obj, jobject matrix, jobject stack) {
         jclass matrixClass, stackClass, pairClass = 0;
-        jmethodID stack_pop_mid, stack_empty_mid, matrix_repopulate_mid, pair_geti_mid, pair_getj_mid;
+        jmethodID stack_pop_mid, stack_empty_mid, matrix_repopulate_mid, pair_geti_mid = 0, pair_getj_mid = 0;
         jobject pair;
         jint i, j;
         jboolean b;