--- old/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/StringCompareToTest.java	2018-12-11 11:13:37.000000000 -0800
+++ new/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.replacements.test/src/org/graalvm/compiler/replacements/test/StringCompareToTest.java	2018-12-11 11:13:36.000000000 -0800
@@ -93,6 +93,7 @@
             needCheckNode = false;
         } else {
             List<String> vmArgs = GraalServices.getInputArguments();
+            Assume.assumeTrue(vmArgs != null);
             for (String vmArg : vmArgs) {
                 if (vmArg.equals(DISABLE_COMPACTSTRINGS_FLAG)) {
                     needCheckNode = false;