As per my stackoverflow question:

import numpy as np
a = np.zeros(4, dtype=np.dtype([('t', '<f8'), ('d', [('a', '<i4'), ('b', '<f8')], (100,))], align=True))
b = np.require(a, requirements=['ALIGNED'])
print([x.flags['ALIGNED'] for x in [a, b]])

prints [False, False] !

@charris writes that "The recarray class accepts an aligned parameter, but looks to lose it in format_parser".

This bug breaks usage of PyOpenGL as per my other stackoverflow question.

As an aside why does "c-contiguous" imply "aligned" for recarray?