--- a/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/CheckGraalInvariants.java	Wed Sep 20 15:12:11 2017 +0200
+++ b/src/jdk.internal.vm.compiler/share/classes/org.graalvm.compiler.core.test/src/org/graalvm/compiler/core/test/CheckGraalInvariants.java	Wed Oct 11 17:11:28 2017 -0700
@@ -172,7 +172,7 @@
 
         PhaseSuite<HighTierContext> graphBuilderSuite = new PhaseSuite<>();
         Plugins plugins = new Plugins(new InvocationPlugins());
-        GraphBuilderConfiguration config = GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true);
+        GraphBuilderConfiguration config = GraphBuilderConfiguration.getDefault(plugins).withEagerResolving(true).withUnresolvedIsError(true);
         graphBuilderSuite.appendPhase(new GraphBuilderPhase(config));
         HighTierContext context = new HighTierContext(providers, graphBuilderSuite, OptimisticOptimizations.NONE);