Handle PyCFunctionWrapper in CreateFunctionNode

Author: fangerer

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/capi/CApiGuards.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, 2023, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2020, 2024, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * The Universal Permissive License (UPL), Version 1.0
@@ -49,7 +49,7 @@ public static boolean isPrimitiveNativeWrapper(Object object) {
     }
 
     public static boolean isNativeWrapper(Object object) {
-        return object instanceof PythonNativeWrapper;
+        return object instanceof PythonNativeWrapper || object instanceof PyCFunctionWrapper;
     }
 
     public static boolean isNativeNull(Object object) {

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cext/capi/CExtNodes.java

@@ -1957,6 +1957,16 @@ static Object doPythonCallable(TruffleString name, PythonNativeWrapper callable,
             return function != null ? function : managedCallable;
         }
 
+        @Specialization
+        @TruffleBoundary
+        static PBuiltinFunction doPyCFunctionWrapper(TruffleString name, PyCFunctionWrapper wrapper, int signature, Object type, int flags) {
+            Object delegate = wrapper.getDelegate();
+            assert !(delegate instanceof PythonAbstractObject);
+            PythonContext context = PythonContext.get(null);
+            PythonLanguage language = context.getLanguage();
+            return PExternalFunctionWrapper.createWrapperFunction(name, delegate, type, flags, signature, language, context.factory(), false);
+        }
+
         @Specialization(guards = {"!isNativeWrapper(callable)"})
         @TruffleBoundary
         static Object doNativeCallableWithWrapper(TruffleString name, Object callable, int signature, Object type, int flags,