Support 'PySequence_Fast_GET_SIZE' macro.

Author: fangerer

graalpython/com.oracle.graal.python.test/src/tests/cpyext/test_abstract.py

@@ -450,6 +450,21 @@ def compile_module(self, name):
         ),
         resultspec="O",
         argspec='On',
-        arguments=["PyObject* tuple", "Py_ssize_t idx"],
+        arguments=["PyObject* sequence", "Py_ssize_t idx"],
+    )
+
+    test_PySequence_Fast_GET_SIZE = CPyExtFunction(
+        lambda args: len(args[0]),
+        lambda: (
+            (tuple(),),
+            ((1,2,3),),
+            ((None,),),
+            ([],),
+            (['a','b','c'],),
+            ([None],),
+        ),
+        resultspec="n",
+        argspec='O',
+        arguments=["PyObject* sequence"],
     )
 

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/objects/cpyobject/PythonObjectNativeWrapperMR.java

@@ -134,7 +134,7 @@ Object doObType(PythonObject object, @SuppressWarnings("unused") String key) {
         }
 
         @Specialization(guards = "eq(OB_SIZE, key)")
-        int doObSize(PythonObject object, @SuppressWarnings("unused") String key,
+        long doObSize(PythonObject object, @SuppressWarnings("unused") String key,
                         @Cached("create(__LEN__)") LookupAndCallUnaryNode callLenNode) {
             try {
                 return callLenNode.executeInt(object);