no context needed in internal S4 calls

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/AccessSlotNode.java

@@ -81,7 +81,7 @@ public abstract class AccessSlotNode extends RNode {
                 // TODO: any way to cache it or use a mechanism similar to overrides?
                 REnvironment methodsNamespace = REnvironment.getRegisteredNamespace("methods");
                 RFunction dataPart = getDataPartFunction(methodsNamespace);
-                return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(Utils.getActualCurrentFrame(), RASTUtils.getOriginalCall(this)), null, object);
+                return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(null, RASTUtils.getOriginalCall(this)), null, object);
             } else if (name == RRuntime.NAMES_ATTR_KEY && object instanceof RAbstractVector) {
                 assert false; // RS4Object can never be a vector?
                 return RNull.instance;
@@ -134,7 +134,7 @@ public abstract class AccessSlotNode extends RNode {
         // TODO: any way to cache it or use a mechanism similar to overrides?
         REnvironment methodsNamespace = REnvironment.getRegisteredNamespace("methods");
         RFunction dataPart = getDataPartFunction(methodsNamespace);
-        return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(Utils.getActualCurrentFrame(), RASTUtils.getOriginalCall(this)), null, object);
+        return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(null, RASTUtils.getOriginalCall(this)), null, object);
     }
 
     // this is really a fallback specialization but @Fallback does not work here (because of the

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/access/UpdateSlotNode.java

@@ -62,7 +62,7 @@ public abstract class UpdateSlotNode extends RNode {
         String identifier = "setDataPart";
         Object f = methodsNamespace.findFunction(identifier);
         RFunction dataPart = (RFunction) RContext.getRRuntimeASTAccess().forcePromise(identifier, f);
-        return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(Utils.getActualCurrentFrame(), RASTUtils.getOriginalCall(this)), null, object,
+        return RContext.getEngine().evalFunction(dataPart, methodsNamespace.getFrame(), RCaller.create(null, RASTUtils.getOriginalCall(this)), null, object,
                         prepareValue(value),
                         RRuntime.LOGICAL_TRUE);
     }

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/ClassHierarchyNode.java

@@ -40,7 +40,6 @@ import com.oracle.truffle.r.nodes.unary.CastToVectorNode;
 import com.oracle.truffle.r.nodes.unary.UnaryNode;
 import com.oracle.truffle.r.runtime.RCaller;
 import com.oracle.truffle.r.runtime.RInternalError;
-import com.oracle.truffle.r.runtime.Utils;
 import com.oracle.truffle.r.runtime.context.RContext;
 import com.oracle.truffle.r.runtime.data.RArgsValuesAndNames;
 import com.oracle.truffle.r.runtime.data.RAttributable;
@@ -188,8 +187,7 @@ abstract class S4Class extends RBaseNode {
             // the assumption here is that the R function can only return either a String or
             // RStringVector
             s4Extends = (RStringVector) castToVector.execute(
-                            RContext.getEngine().evalFunction(sExtendsForS3Function, methodsEnv.getFrame(), RCaller.create(Utils.getActualCurrentFrame(), RASTUtils.getOriginalCall(this)), null,
-                                            classAttr));
+                            RContext.getEngine().evalFunction(sExtendsForS3Function, methodsEnv.getFrame(), RCaller.create(null, RASTUtils.getOriginalCall(this)), null, classAttr));
             RContext.getInstance().putS4Extends(classAttr, s4Extends);
         }
         return s4Extends;