Michael Felt added the comment:
> I presume this also affects Python 3.
I presume this as well - however, harder to verify...
michael@x071:[/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test]../../../python
test_bitfield.py
Could not find platform dependent libraries <exec_prefix>
Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]
Failed to import the site module
Traceback (most recent call last):
File
"/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test/../../../Lib/site.py",
line 571, in <module>
main()
File
"/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test/../../../Lib/site.py",
line 557, in main
known_paths = addusersitepackages(known_paths)
File
"/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test/../../../Lib/site.py",
line 281, in addusersitepackages
user_site = getusersitepackages()
File
"/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test/../../../Lib/site.py",
line 257, in getusersitepackages
user_base = getuserbase() # this will also set USER_BASE
File
"/data/prj/aixtools/python/python-3.6.0.162/Lib/ctypes/test/../../../Lib/site.py",
line 247, in getuserbase
USER_BASE = get_config_var('userbase')
File "/data/prj/aixtools/python/python-3.6.0.162/Lib/sysconfig.py", line 587,
in get_config_var
return get_config_vars().get(name)
File "/data/prj/aixtools/python/python-3.6.0.162/Lib/sysconfig.py", line 536,
in get_config_vars
_init_posix(_CONFIG_VARS)
File "/data/prj/aixtools/python/python-3.6.0.162/Lib/sysconfig.py", line 408,
in _init_posix
from _sysconfigdata import build_time_vars
ImportError: No module named '_sysconfigdata'
I guess I will have to install it, rather than only work from a test directory.
> The test seems to be comparing ctypes and native C bit-field structures,
> c_int and c_short versus native int and short. ... int always means signed
> int.
I believe int means signed on AIX as well - as the comment from the compiler is
that type "unsigned" is assumed for a bitfield.
Note: the single line of code is:
+382 short M: 1, N: 2, O: 3, P: 4, Q: 5, R: 6, S: 7;
And from your comments I am wondering if the fix is 'simple' - to:
+382 unsigned short M: 1, N: 2, O: 3, P: 4, Q: 5, R: 6, S: 7;
I can at least try that.
Looking at Python-3.6.0.0a2:
the line concerned is identical - so that is the verification (for now) that it
is also in Python3
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