diff -r e0041b182e31 -r a2008587c13f src/java.base/share/classes/java/lang/invoke/LambdaFormEditor.java
--- a/src/java.base/share/classes/java/lang/invoke/LambdaFormEditor.java	Wed Nov 08 10:27:10 2017 -0800
+++ b/src/java.base/share/classes/java/lang/invoke/LambdaFormEditor.java	Thu Nov 16 00:58:50 2017 +0100
@@ -381,10 +381,11 @@
     /// Editing methods for method handles.  These need to have fast paths.
 
     private BoundMethodHandle.SpeciesData oldSpeciesData() {
-        return BoundMethodHandle.speciesData(lambdaForm);
+        return BoundMethodHandle.speciesDataFor(lambdaForm);
     }
+
     private BoundMethodHandle.SpeciesData newSpeciesData(BasicType type) {
-        return oldSpeciesData().extendWith(type);
+        return oldSpeciesData().extendWith((byte) type.ordinal());
     }
 
     BoundMethodHandle bindArgumentL(BoundMethodHandle mh, int pos, Object value) {
@@ -461,7 +462,7 @@
             buf.replaceParameterByNewExpression(pos, new Name(getter, newBaseAddress));
         } else {
             // cannot bind the MH arg itself, unless oldData is empty
-            assert(oldData == BoundMethodHandle.SpeciesData.EMPTY);
+            assert(oldData == BoundMethodHandle.SPECIALIZER.topSpecies());
             newBaseAddress = new Name(L_TYPE).withConstraint(newData);
             buf.replaceParameterByNewExpression(0, new Name(getter, newBaseAddress));
             buf.insertParameter(0, newBaseAddress);