There was a leak in {func}fluidimage.calcul.subpix.compute_subpix_2d_gaussian2,
which is a pythranized function.
A simple reproducer is
# pythran export simpler_leak(float32[:, :], int, int)
# pythran export simpler_no_leak(float32[:, :], int, int)
def simpler_leak(correl, ix, iy):
# returning this view leads to a leak!
correl_crop = correl[iy - 1 : iy + 2, ix - 1 : ix + 2]
return correl_crop
def simpler_no_leak(correl, ix, iy):
correl_crop = np.ascontiguousarray(correl[iy - 1 : iy + 2, ix - 1 : ix + 2])
return correl_crop