Message263315
On the x64 architecture gcc adds trailing padding bytes after the last
struct member. NumPy does the same:
>>> import numpy as np
>>>
>>> t = np.dtype([('x', 'u1'), ('y', 'u8'), ('z', 'u1')], align=True)
>>> x = np.array([(1, 2, 3)], dtype=t)
>>> x.tostring()
b'\x01\xf7\xba\xab\x03\x7f\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x00\x00\x00\x00'
The struct module in native mode does not:
>>> struct.pack("BQB", 1, 2, 3)
b'\x01\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x03'
I'm not sure if this is intended -- or if full compatibility to
native compilers is even achievable in the general case. |
|
Date |
User |
Action |
Args |
2016-04-13 08:38:49 | skrah | set | recipients:
+ skrah, mark.dickinson |
2016-04-13 08:38:49 | skrah | set | messageid: <1460536729.2.0.723853097724.issue26746@psf.upfronthosting.co.za> |
2016-04-13 08:38:49 | skrah | link | issue26746 messages |
2016-04-13 08:38:48 | skrah | create | |
|