--- a/hotspot/test/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestMetaAccessProvider.java	Wed Aug 23 18:28:45 2017 +0000
+++ b/hotspot/test/compiler/jvmci/jdk.vm.ci.runtime.test/src/jdk/vm/ci/runtime/test/TestMetaAccessProvider.java	Mon Aug 14 14:15:56 2017 -0700
@@ -257,4 +257,15 @@
             assertEquals("Unexpected debugId", metaAccess.decodeDebugId(value), DEBUG_IDS[i]);
         }
     }
+
+    @Test
+    public void parseSignatureTest() {
+        for (String badSig : new String[]{"", "()", "(", "()Vextra", "()E", "(E)", "(Ljava.lang.Object;)V"}) {
+            try {
+                metaAccess.parseMethodDescriptor(badSig);
+                throw new AssertionError("Expected signature to be invalid: " + badSig);
+            } catch (IllegalArgumentException e) {
+            }
+        }
+    }
 }