@@ -34,6 +34,7 @@ PyAPI_FUNC(PyObject *)_PyCoro_GetAwaitableIter(PyObject *o);
 extern PyObject *_PyAsyncGenValueWrapperNew(PyThreadState *state, PyObject *);
 
 extern PyTypeObject _PyCoroWrapper_Type;
+extern PyTypeObject _PyGenWrapper_Type;
 extern PyTypeObject _PyAsyncGenWrappedValue_Type;
 extern PyTypeObject _PyAsyncGenAThrow_Type;
 

diff --git a/Include/internal/pycore_global_objects_fini_generated.h b/Include/internal/pycore_global_objects_fini_generated.h
diff --git a/Include/internal/pycore_global_strings.h b/Include/internal/pycore_global_strings.h
@@ -479,6 +479,11 @@ struct _Py_global_strings {
         STRUCT_FOR_ID(get_source)
         STRUCT_FOR_ID(getattr)
         STRUCT_FOR_ID(getstate)
+        STRUCT_FOR_ID(gi_code)
+        STRUCT_FOR_ID(gi_frame)
+        STRUCT_FOR_ID(gi_running)
+        STRUCT_FOR_ID(gi_suspended)
+        STRUCT_FOR_ID(gi_yieldfrom)
         STRUCT_FOR_ID(gid)
         STRUCT_FOR_ID(globals)
         STRUCT_FOR_ID(groupindex)

diff --git a/Include/internal/pycore_runtime_init_generated.h b/Include/internal/pycore_runtime_init_generated.h
diff --git a/Include/internal/pycore_unicodeobject_generated.h b/Include/internal/pycore_unicodeobject_generated.h
@@ -2241,21 +2241,26 @@ def foo(): return gen
         self.assertIs(wrapper.__name__, gen.__name__)
 
         # Test AttributeErrors
-        for name in {'gi_running', 'gi_frame', 'gi_code', 'gi_yieldfrom',
-                     'cr_running', 'cr_frame', 'cr_code', 'cr_await'}:
+        for name in (
+            'gi_running', 'gi_suspended', 'gi_frame', 'gi_code', 'gi_yieldfrom',
+            'cr_running', 'cr_suspended', 'cr_frame', 'cr_code', 'cr_await'
+        ):
             with self.assertRaises(AttributeError):
                 getattr(wrapper, name)
 
         # Test attributes pass-through
         gen.gi_running = object()
+        gen.gi_suspended = object()
         gen.gi_frame = object()
         gen.gi_code = object()
         gen.gi_yieldfrom = object()
         self.assertIs(wrapper.gi_running, gen.gi_running)
+        self.assertIs(wrapper.gi_suspended, gen.gi_suspended)
         self.assertIs(wrapper.gi_frame, gen.gi_frame)
         self.assertIs(wrapper.gi_code, gen.gi_code)
         self.assertIs(wrapper.gi_yieldfrom, gen.gi_yieldfrom)
         self.assertIs(wrapper.cr_running, gen.gi_running)
+        self.assertIs(wrapper.cr_suspended, gen.gi_suspended)
         self.assertIs(wrapper.cr_frame, gen.gi_frame)
         self.assertIs(wrapper.cr_code, gen.gi_code)
         self.assertIs(wrapper.cr_await, gen.gi_yieldfrom)

@@ -33,7 +33,7 @@ def _g():
     async def _c(): pass
     _c = _c()
     CoroutineType = type(_c)
-    _c.close()  # Prevent ResourceWarning
+    _c.close()  # Prevent RuntimeWarning
 
     async def _ag():
         yield
@@ -250,7 +250,6 @@ def deleter(self, fdel):
 
 
 class _GeneratorWrapper:
-    # TODO: Implement this in C.
     def __init__(self, gen):
         self.__wrapped = gen
         self.__isgen = gen.__class__ is GeneratorType
@@ -272,11 +271,15 @@ def gi_frame(self):
     def gi_running(self):
         return self.__wrapped.gi_running
     @property
+    def gi_suspended(self):
+        return self.__wrapped.gi_suspended
+    @property
     def gi_yieldfrom(self):
         return self.__wrapped.gi_yieldfrom
     cr_code = gi_code
     cr_frame = gi_frame
     cr_running = gi_running
+    cr_suspended = gi_suspended
     cr_await = gi_yieldfrom
     def __next__(self):
         return next(self.__wrapped)
@@ -286,6 +289,12 @@ def __iter__(self):
         return self
     __await__ = __iter__
 
+try:
+    from _types import _GeneratorWrapper
+except ImportError:
+    # Leave the pure Python version in place.
+    pass
+
 def coroutine(func):
     """Convert regular generator function to a coroutine."""
 

diff --git a/Misc/NEWS.d/next/Library/2025-05-04-15-50-41.gh-issue-133372.ExoQUd.rst b/Misc/NEWS.d/next/Library/2025-05-04-15-50-41.gh-issue-133372.ExoQUd.rst
@@ -0,0 +1 @@
+Add a C implementation of :class:`~types._GeneratorWrapper`.
@@ -5,6 +5,7 @@
 #include "pycore_namespace.h"     // _PyNamespace_Type
 #include "pycore_object.h"        // _PyNone_Type, _PyNotImplemented_Type
 #include "pycore_unionobject.h"   // _PyUnion_Type
+#include "pycore_genobject.h"     // _PyGenWrapper_Type
 
 static int
 _types_exec(PyObject *m)
@@ -46,6 +47,7 @@ _types_exec(PyObject *m)
     EXPORT_STATIC_TYPE("TracebackType", PyTraceBack_Type);
     EXPORT_STATIC_TYPE("UnionType", _PyUnion_Type);
     EXPORT_STATIC_TYPE("WrapperDescriptorType", PyWrapperDescr_Type);
+    EXPORT_STATIC_TYPE("_GeneratorWrapper", _PyGenWrapper_Type);
 #undef EXPORT_STATIC_TYPE
     return 0;
 }
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Add a C implementation of :class:`~types._GeneratorWrapper`.