Enable "check_size=False" for the NumPy ndarray and dtype extension types to...

Enable "check_size=False" for the NumPy ndarray and dtype extension types to avoid warning about otherwise backwards compatible changes.

CHANGES.rst

@@ -159,6 +159,10 @@ Bugs fixed
   ``c_string_encoding`` directive appeared within the first two lines.
   (Github issue #2632)
 
+* Cython generated modules no longer emit a warning during import when the
+  size of the NumPy array type is larger than what was found at compile time.
+  Instead, this is assumed to be a backwards compatible change on NumPy side.
+
 Other changes
 -------------
 

Cython/Includes/numpy/__init__.pxd

@@ -203,7 +203,7 @@ cdef extern from "numpy/arrayobject.h":
     ctypedef struct PyArray_Descr:
         pass
 
-    ctypedef class numpy.dtype [object PyArray_Descr]:
+    ctypedef class numpy.dtype [object PyArray_Descr, check_size False]:
         # Use PyDataType_* macros when possible, however there are no macros
         # for accessing some of the fields, so some are defined.
         cdef PyTypeObject* typeobj
@@ -239,7 +239,7 @@ cdef extern from "numpy/arrayobject.h":
         # like PyArrayObject**.
         pass
 
-    ctypedef class numpy.ndarray [object PyArrayObject]:
+    ctypedef class numpy.ndarray [object PyArrayObject, check_size False]:
         cdef __cythonbufferdefaults__ = {"mode": "strided"}
 
         cdef: