BUG: Memory leak in buffer interface with NPY_RELAXED_STRIDES_CHECKING #16934
Description
Reproducing code example:
The following cython code leaks memory when called in a loop:
import numpy as np
from cpython.buffer cimport *
a = np.random.rand(10)[:, None]
def memory_leak():
cdef Py_buffer buf
PyObject_GetBuffer(a, &buf, PyBUF_STRIDED)
PyBuffer_Release(&buf)The key factor seems to be the zero strided axis in a.
Numpy/Python version information:
1.17.2 3.7.7 (default, May 7 2020, 21:25:33)
[GCC 7.3.0]