Swallow DLPack conversion error (#825)

Close #824.

The bug could have been caught by the existing datetime test, but
1. the test has a bug to cover the actual error
2. CuPy is not a test dependency 

As per #472 we also add CuPy
to wheel test dependencies.

Author: leofang

numba_cuda/numba/cuda/tests/cudapy/test_datetime.py

@@ -74,12 +74,12 @@ def assign(out, arr):
             for i in range(arr.shape[0]):
                 out[i] = arr[i]
 
-        # TODO: cupy doesn't allow passing the datetime64[D] array directly
+        # CuPy doesn't allow constructing the datetime64[D] array directly
         arr = cp.array(
             np.arange("2005-02", "2006-02", dtype="datetime64[D]").view("int64")
         ).view("datetime64[D]")
 
-        out = cp.empty_like(arr)
+        out = cp.empty(arr.size, dtype="float64").view("datetime64[D]")
         assign[1, 1](out, arr)
 
         self.assertPreciseEqual(arr.get(), out.get())

numba_cuda/numba/cuda/typing/typeof.py

@@ -361,7 +361,10 @@ def _typeof_cuda_array_interface_cached(
 def _typeof_dlpack(val, c):
     obj = getattr(val, "__self__", None)
     if obj is not None:
-        smv = StridedMemoryView.from_dlpack(obj, stream_ptr=-1)
+        try:
+            smv = StridedMemoryView.from_dlpack(obj, stream_ptr=-1)
+        except BufferError:
+            return
 
         smv_layout = smv._layout
         layout = (

pyproject.toml

@@ -70,8 +70,8 @@ test = [
     "ml_dtypes",
     "statistics",
 ]
-test-cu12 = ["cuda-toolkit[curand]==12.*", { include-group = "test" }]
-test-cu13 = ["cuda-toolkit[curand]==13.*", { include-group = "test" }]
+test-cu12 = ["cuda-toolkit[curand,cublas]==12.*", { include-group = "test" }, "cupy-cuda12x !=14.0.0"]
+test-cu13 = ["cuda-toolkit[curand,cublas]==13.*", { include-group = "test" }, "cupy-cuda13x !=14.0.0"]
 
 [project.urls]
 Homepage = "https://nvidia.github.io/numba-cuda/"