[issue23352] PyBuffer_IsContiguous() sometimes returns wrong result if suboffsets != NULL
Stefan Krah
report at bugs.python.org
Sun Feb 1 09:59:39 CET 2015
Stefan Krah added the comment:
> Richard Hansen added the comment:
> > Cython doesn't follow the spec though (use Python 3):
> >
> > from _testbuffer import *
> > cpdef foo():
> > cdef unsigned char[:] v = bytearray(b"testing")
> > nd = ndarray(v, getbuf=PyBUF_ND)
> > print(nd.suboffsets)
> > nd = ndarray(v, getbuf=PyBUF_FULL)
> > print(nd.suboffsets)
>
> When I compile and run the above (latest Cython from Git master), I get:
>
> ()
> ()
With Cython version 0.20.1post0 I get:
>>> foo.foo()
(-1,)
(-1,)
If you get the correct output from the latest Cython, it looks like this
issue has been fixed.
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<http://bugs.python.org/issue23352>
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