added fallback specialization to ObjectNode and B2aHexNode

Author: tomasstupka

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/BinasciiModuleBuiltins.java

@@ -50,6 +50,7 @@
 import com.oracle.graal.python.builtins.Builtin;
 import com.oracle.graal.python.builtins.CoreFunctions;
 import com.oracle.graal.python.builtins.PythonBuiltinClassType;
+import static com.oracle.graal.python.builtins.PythonBuiltinClassType.TypeError;
 import com.oracle.graal.python.builtins.PythonBuiltins;
 import com.oracle.graal.python.builtins.objects.PNone;
 import com.oracle.graal.python.builtins.objects.array.PArray;
@@ -362,6 +363,11 @@ PBytes b2a(PArray data,
             return b2a(toByteArray.execute(data.getSequenceStorage()));
         }
 
+        @Fallback
+        PBytes b2a(Object data) {
+            throw raise(TypeError, ErrorMessages.BYTESLIKE_OBJ_REQUIRED, data);
+        }
+
         @TruffleBoundary
         private PBytes b2a(byte[] bytes) {
             byte[] output = new byte[bytes.length * 2];

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/BuiltinConstructors.java

@@ -1675,6 +1675,12 @@ Object doNativeObjectIndirect(PythonNativeClass self, Object[] varargs, PKeyword
             return callNativeGenericNewNode(self, varargs, kwargs);
         }
 
+        @SuppressWarnings("unused")
+        @Fallback
+        Object fallback(Object o, Object[] varargs, PKeyword[] kwargs) {
+            throw raise(TypeError, ErrorMessages.IS_NOT_TYPE_OBJ, "object.__new__(X): X", o);
+        }
+
         private static PythonNativeClass findFirstNativeBaseClass(PythonAbstractClass[] methodResolutionOrder) {
             for (PythonAbstractClass cls : methodResolutionOrder) {
                 if (PGuards.isNativeClass(cls)) {