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Checking contiguity of memoryviews within a cython not working #3053

JuanGGO opened this issue Jul 24, 2019 · 0 comments


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commented Jul 24, 2019

Hi, using cython 0.28.5 I encounter the following situation.

Say I have the following two routines inside the file test.pyx

cpdef test1(int[:, ::1] array):
   test2(array[4:8, 5:9])

cdef test2(int[:, ::1] array):
   pass array to a method in c++ that expects array to be C-contiguous

when I pass a numpy array directly from python to test1 that is not contiguous then an error is raised. However when I pass an non-contiguous memoryview to a method then no error is raised and the execution continues. I don't know if this is an actual bug or a "feature".
I couldn't find any guidelines in the documentation and my guess is that this is an actual bug because not raising an error in the function test2 might lead to very nasty bugs when passing the buffer to other languages that expect the buffer to be continuous. Thanks.

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