Cython mis-compiles Optional types

Author: leofang

cuda_core/cuda/core/experimental/_device.py

@@ -1222,7 +1222,7 @@ def create_context(self, options: ContextOptions = None) -> Context:
         """
         raise NotImplementedError("WIP: https://github.com/NVIDIA/cuda-python/issues/189")
 
-    def create_stream(self, obj: Optional[IsStreamT] = None, options: StreamOptions = None) -> Stream:
+    def create_stream(self, obj: Optional[IsStreamT] = None, options: Optional[StreamOptions] = None) -> Stream:
         """Create a Stream object.
 
         New stream objects can be created in two different ways:

cuda_core/cuda/core/experimental/_event.pyx

@@ -88,7 +88,7 @@ cdef class Event:
         raise RuntimeError("Event objects cannot be instantiated directly. Please use Stream APIs (record).")
 
     @classmethod
-    def _init(cls, device_id: int, ctx_handle: Context, options: Optional[EventOptions] = None):
+    def _init(cls, device_id: int, ctx_handle: Context, options=None):
         cdef Event self = Event.__new__(Event)
         cdef EventOptions opts = check_or_create_options(EventOptions, options, "Event options")
         flags = 0x0

cuda_core/cuda/core/experimental/_stream.pyx

@@ -145,7 +145,7 @@ cdef class Stream:
         return self
 
     @classmethod
-    def _init(cls, obj: Optional[IsStreamT] = None, *, options: Optional[StreamOptions] = None, device_id: int = None):
+    def _init(cls, obj: Optional[IsStreamT] = None, options=None, device_id: int = None):
         cdef Stream self = Stream.__new__(Stream)
         self._handle = None
         self._owner = None