Fix: pass 'PythonNativeNull' through 'AsPythonObjectNode'.

Author: fangerer

graalpython/com.oracle.graal.python.cext/src/capi.c

@@ -195,7 +195,7 @@ static void initialize_capi() {
 MUST_INLINE
 void* native_to_java(PyObject* obj) {
     if (obj == NULL) {
-        return wrapped_null;
+        return Py_NoValue;
     } else if (obj == Py_None) {
         return Py_None;
     } else if (polyglot_is_string(obj)) {

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

@@ -1051,8 +1051,8 @@ abstract static class PyTruffle_Unicode_DecodeUTF32 extends NativeUnicodeBuiltin
 
         @Child private CExtNodes.ToSulongNode toSulongNode;
 
-        @Specialization(guards = "isByteArray(o)")
-        Object doUnicode(TruffleObject o, long size, @SuppressWarnings("unused") PythonNativeNull errors, int byteorder, Object errorMarker) {
+        @Specialization(guards = {"isByteArray(o)", "isNoValue(errors)"})
+        Object doUnicode(TruffleObject o, long size, @SuppressWarnings("unused") PNone errors, int byteorder, Object errorMarker) {
             return doUnicode(o, size, "strict", byteorder, errorMarker);
         }
 

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

@@ -392,8 +392,8 @@ PythonAbstractObject doNativeObject(TruffleObject object) {
         }
 
         @Specialization
-        PNone doNativeNull(@SuppressWarnings("unused") PythonNativeNull object) {
-            return PNone.NO_VALUE;
+        PythonNativeNull doNativeNull(@SuppressWarnings("unused") PythonNativeNull object) {
+            return object;
         }
 
         @Specialization