Michael Felt added the comment:
On 8/4/2016 10:58 AM, Martin Panter wrote:
> Can you figure out a way to test for XLC (but not GCC, which the AIX buildbot
> uses), and then try my patch out? Hopefully you see no more compiler
> warnings, test_ints() should now pass, and test_shorts() should be skipped.
Was not as simple as it sounds. I could not find a specific parameter
provided by xlc and as you wanted something that would only skip on AIX
- testing for __GNUC__ (in the positive sense) will not work either.
What I am thinking of now is
#if defined(__GNUC__) || !defined(_AIX)
...
#endif
As this will pass on AIX when GCC is used, but only be skipped on AIX
when GCC is not used.
+++++++++++++++++++++++++++++++++++++++++++++++++++++ More TESTS ++++
Summary - maybe the problem is with the "byref()" routine...
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
My initial test of the patch confused me, so I went back to the original
code - and started again.
I have three partitions I am testing on - x064 (AIX 5.3 TL7, vac v.11);
x065 (AIX 5.3 TL7, gcc 4.7.4),
and x067 ( Debian 3.16.7-ckt9-3 (2015-04-23) ppc64, gcc (Debian
5.3.1-21) 5.3.1 20160528)
My working directory is /data/prj/aixtools/python/python-2.7.12.0 which
is a copy of the extracted Python-2.7.12.
This directory is on NFS, so each system is using the same files as source:
The first builds - no changes - expect to test_bitfields.py:
##for n in "ABCDEFGHIMNOPQRS":
## print n, hex(getattr(BITS, n).size), getattr(BITS, n).offset
for n in "ABCDEFGHIMNOPQRS":
b = BITS()
print n, hex(getattr(BITS, n).size), getattr(BITS, n).offset,
func(byref(b), n)
x065:
root@x065:[/data/prj/aixtools/python/python-2.7.12.0]./python
Lib/ctypes/test/test_bitfields.py
A 0x1001f 0 0
B 0x2001d 0 0
C 0x3001a 0 0
D 0x40016 0 0
E 0x50011 0 0
F 0x6000b 0 0
G 0x70004 0 0
H 0x80018 4 0
I 0x9000f 4 0
M 0x1000e 6 0
N 0x2000c 6 0
O 0x30009 6 0
P 0x40005 6 0
Q 0x50000 6 0
R 0x6000a 8 0
S 0x70003 8 0
root@x067:/data/prj/aixtools/python/python-2.7.12.0# ./python
Lib/ctypes/test/test_bitfields.py
A 0x1001f 0 0
B 0x2001d 0 0
C 0x3001a 0 0
D 0x40016 0 0
E 0x50011 0 0
F 0x6000b 0 0
G 0x70004 0 0
H 0x80018 4 0
I 0x9000f 4 0
M 0x1000e 6 0
N 0x2000c 6 0
O 0x30009 6 0
P 0x40005 6 0
Q 0x50000 6 0
R 0x6000a 8 0
S 0x70003 8 0
...................
----------------------------------------------------------------------
Ran 19 tests in 0.087s
OK
root@x064:[/data/prj/aixtools/python/python-2.7.12.0]./python
Lib/ctypes/test/test_bitfields.py
A 0x1001f 0 0
B 0x2001d 0 0
C 0x3001a 0 0
D 0x40016 0 0
E 0x50011 0 0
F 0x6000b 0 0
G 0x70004 0 0
H 0x80018 4 0
I 0x9000f 4 0
M 0x1000e 6 0
N 0x2000c 6 0
O 0x30009 6 0
P 0x40005 6 0
Q 0x50000 6 0
R 0x6000a 8 0
S 0x70003 8 0
.................FF
======================================================================
FAIL: test_ints (__main__.C_Test)
----------------------------------------------------------------------
Traceback (most recent call last):
File "Lib/ctypes/test/test_bitfields.py", line 45, in test_ints
self.assertEqual((name, i, getattr(b, name)), (name, i,
func(byref(b), name)))
AssertionError: Tuples differ: ('A', 1, -1) != ('A', 1, 1)
First differing element 2:
-1
1
- ('A', 1, -1)
? -
+ ('A', 1, 1)
======================================================================
FAIL: test_shorts (__main__.C_Test)
----------------------------------------------------------------------
Traceback (most recent call last):
File "Lib/ctypes/test/test_bitfields.py", line 52, in test_shorts
self.assertEqual((name, i, getattr(b, name)), (name, i,
func(byref(b), name)))
AssertionError: Tuples differ: ('M', 1, -1) != ('M', 1, 1)
First differing element 2:
-1
1
- ('M', 1, -1)
? -
+ ('M', 1, 1)
----------------------------------------------------------------------
Ran 19 tests in 0.010s
FAILED (failures=2)
root@x064:[/data/prj/aixtools/python/python-2.7.12.0]
Changed the test again to include:
##for n in "ABCDEFGHIMNOPQRS":
## print n, hex(getattr(BITS, n).size), getattr(BITS, n).offset
for n in "ABCDEFGHIMNOPQRS":
b = BITS()
print n, hex(getattr(BITS, n).size), getattr(BITS, n).offset,
getattr(b,n), func(byref(b), n)
root@x064:[/data/prj/aixtools/python/python-2.7.12.0]./python
Lib/ctypes/test/test_bitfields.py
A 0x1001f 0 0 0
B 0x2001d 0 0 0
C 0x3001a 0 0 0
D 0x40016 0 0 0
E 0x50011 0 0 0
F 0x6000b 0 0 0
G 0x70004 0 0 0
H 0x80018 4 0 0
I 0x9000f 4 0 0
M 0x1000e 6 0 0
N 0x2000c 6 0 0
O 0x30009 6 0 0
P 0x40005 6 0 0
Q 0x50000 6 0 0
R 0x6000a 8 0 0
S 0x70003 8 0 0
.................FF
======================================================================
FAIL: test_ints (__main__.C_Test)
----------------------------------------------------------------------
Traceback (most recent call last):
File "Lib/ctypes/test/test_bitfields.py", line 45, in test_ints
self.assertEqual((name, i, getattr(b, name)), (name, i,
func(byref(b), name)))
AssertionError: Tuples differ: ('A', 1, -1) != ('A', 1, 1)
First differing element 2:
-1
1
- ('A', 1, -1)
? -
+ ('A', 1, 1)
======================================================================
FAIL: test_shorts (__main__.C_Test)
----------------------------------------------------------------------
Traceback (most recent call last):
File "Lib/ctypes/test/test_bitfields.py", line 52, in test_shorts
self.assertEqual((name, i, getattr(b, name)), (name, i,
func(byref(b), name)))
AssertionError: Tuples differ: ('M', 1, -1) != ('M', 1, 1)
First differing element 2:
-1
1
- ('M', 1, -1)
? -
+ ('M', 1, 1)
----------------------------------------------------------------------
Ran 19 tests in 0.010s
FAILED (failures=2)
**********************************************************************
So, I am wondering if the problem could be better repaired in
setattr(b, name, i)
And changed the test again:
1) comment out the initial changes
2) the following changes (note range limited to 5 for both, rather 512
for first and 256 for second)
class C_Test(unittest.TestCase):
def test_ints(self):
for i in range(5):
for name in "ABCDEFGHI":
b = BITS()
setattr(b, name, i)
print "name:", name, "range:", i, "getattr():",
getattr(b,name), "byref():", func(byref(b), name)
# self.assertEqual((name, i, getattr(b, name)), (name,
i, func(byref(b), name)))
def test_shorts(self):
for i in range(5):
for name in "MNOPQRS":
b = BITS()
setattr(b, name, i)
print "name:", name, "range:", i, "getattr():",
getattr(b,name), "byref():", func(byref(b), name)
# self.assertEqual((name, i, getattr(b, name)), (name,
i, func(byref(b), name)))
***************************
And for most tests (remember the range is 5 now) - all is fine
root@x064:[/data/prj/aixtools/python/python-2.7.12.0]./python
Lib/ctypes/test/test_bitfields.py
.................name: A range: 0 getattr(): 0 byref(): 0
name: B range: 0 getattr(): 0 byref(): 0
name: C range: 0 getattr(): 0 byref(): 0
name: D range: 0 getattr(): 0 byref(): 0
name: E range: 0 getattr(): 0 byref(): 0
name: F range: 0 getattr(): 0 byref(): 0
name: G range: 0 getattr(): 0 byref(): 0
name: H range: 0 getattr(): 0 byref(): 0
name: I range: 0 getattr(): 0 byref(): 0
name: A range: 1 getattr(): -1 byref(): 1
name: B range: 1 getattr(): 1 byref(): 1
name: C range: 1 getattr(): 1 byref(): 1
name: D range: 1 getattr(): 1 byref(): 1
name: E range: 1 getattr(): 1 byref(): 1
name: F range: 1 getattr(): 1 byref(): 1
name: G range: 1 getattr(): 1 byref(): 1
name: H range: 1 getattr(): 1 byref(): 1
name: I range: 1 getattr(): 1 byref(): 1
name: A range: 2 getattr(): 0 byref(): 0
name: B range: 2 getattr(): -2 byref(): 2
name: C range: 2 getattr(): 2 byref(): 2
name: D range: 2 getattr(): 2 byref(): 2
name: E range: 2 getattr(): 2 byref(): 2
name: F range: 2 getattr(): 2 byref(): 2
name: G range: 2 getattr(): 2 byref(): 2
name: H range: 2 getattr(): 2 byref(): 2
name: I range: 2 getattr(): 2 byref(): 2
name: A range: 3 getattr(): -1 byref(): 1
name: B range: 3 getattr(): -1 byref(): 3
name: C range: 3 getattr(): 3 byref(): 3
name: D range: 3 getattr(): 3 byref(): 3
name: E range: 3 getattr(): 3 byref(): 3
name: F range: 3 getattr(): 3 byref(): 3
name: G range: 3 getattr(): 3 byref(): 3
name: H range: 3 getattr(): 3 byref(): 3
name: I range: 3 getattr(): 3 byref(): 3
name: A range: 4 getattr(): 0 byref(): 0
name: B range: 4 getattr(): 0 byref(): 0
name: C range: 4 getattr(): -4 byref(): 4
name: D range: 4 getattr(): 4 byref(): 4
name: E range: 4 getattr(): 4 byref(): 4
name: F range: 4 getattr(): 4 byref(): 4
name: G range: 4 getattr(): 4 byref(): 4
Back to x065...
root@x065:[/data/prj/aixtools/python/python-2.7.12.0]./python Lib
.................name: A range: 0 getattr(): 0 byref(): 0
name: B range: 0 getattr(): 0 byref(): 0
name: C range: 0 getattr(): 0 byref(): 0
name: D range: 0 getattr(): 0 byref(): 0
name: E range: 0 getattr(): 0 byref(): 0
name: F range: 0 getattr(): 0 byref(): 0
name: G range: 0 getattr(): 0 byref(): 0
name: H range: 0 getattr(): 0 byref(): 0
name: I range: 0 getattr(): 0 byref(): 0
name: A range: 1 getattr(): -1 byref(): -1
name: B range: 1 getattr(): 1 byref(): 1
name: C range: 1 getattr(): 1 byref(): 1
name: D range: 1 getattr(): 1 byref(): 1
name: E range: 1 getattr(): 1 byref(): 1
name: F range: 1 getattr(): 1 byref(): 1
name: G range: 1 getattr(): 1 byref(): 1
name: H range: 1 getattr(): 1 byref(): 1
name: I range: 1 getattr(): 1 byref(): 1
name: A range: 2 getattr(): 0 byref(): 0
name: B range: 2 getattr(): -2 byref(): -2
name: C range: 2 getattr(): 2 byref(): 2
name: D range: 2 getattr(): 2 byref(): 2
name: E range: 2 getattr(): 2 byref(): 2
name: F range: 2 getattr(): 2 byref(): 2
name: G range: 2 getattr(): 2 byref(): 2
name: H range: 2 getattr(): 2 byref(): 2
name: I range: 2 getattr(): 2 byref(): 2
name: A range: 3 getattr(): -1 byref(): -1
name: B range: 3 getattr(): -1 byref(): -1
name: C range: 3 getattr(): 3 byref(): 3
name: D range: 3 getattr(): 3 byref(): 3
name: E range: 3 getattr(): 3 byref(): 3
name: F range: 3 getattr(): 3 byref(): 3
name: G range: 3 getattr(): 3 byref(): 3
name: H range: 3 getattr(): 3 byref(): 3
name: I range: 3 getattr(): 3 byref(): 3
name: A range: 4 getattr(): 0 byref(): 0
name: B range: 4 getattr(): 0 byref(): 0
name: C range: 4 getattr(): -4 byref(): -4
name: D range: 4 getattr(): 4 byref(): 4
name: E range: 4 getattr(): 4 byref(): 4
name: F range: 4 getattr(): 4 byref(): 4
name: G range: 4 getattr(): 4 byref(): 4
name: H range: 4 getattr(): 4 byref(): 4
name: I range: 4 getattr(): 4 byref(): 4
.name: M range: 0 getattr(): 0 byref(): 0
name: N range: 0 getattr(): 0 byref(): 0
name: O range: 0 getattr(): 0 byref(): 0
name: P range: 0 getattr(): 0 byref(): 0
name: Q range: 0 getattr(): 0 byref(): 0
name: R range: 0 getattr(): 0 byref(): 0
name: S range: 0 getattr(): 0 byref(): 0
name: M range: 1 getattr(): -1 byref(): -1
name: N range: 1 getattr(): 1 byref(): 1
name: O range: 1 getattr(): 1 byref(): 1
name: P range: 1 getattr(): 1 byref(): 1
name: Q range: 1 getattr(): 1 byref(): 1
name: R range: 1 getattr(): 1 byref(): 1
name: S range: 1 getattr(): 1 byref(): 1
name: M range: 2 getattr(): 0 byref(): 0
name: N range: 2 getattr(): -2 byref(): -2
name: O range: 2 getattr(): 2 byref(): 2
name: P range: 2 getattr(): 2 byref(): 2
name: Q range: 2 getattr(): 2 byref(): 2
name: R range: 2 getattr(): 2 byref(): 2
name: S range: 2 getattr(): 2 byref(): 2
name: M range: 3 getattr(): -1 byref(): -1
name: N range: 3 getattr(): -1 byref(): -1
name: O range: 3 getattr(): 3 byref(): 3
name: P range: 3 getattr(): 3 byref(): 3
name: Q range: 3 getattr(): 3 byref(): 3
name: R range: 3 getattr(): 3 byref(): 3
name: S range: 3 getattr(): 3 byref(): 3
name: M range: 4 getattr(): 0 byref(): 0
name: N range: 4 getattr(): 0 byref(): 0
name: O range: 4 getattr(): -4 byref(): -4
name: P range: 4 getattr(): 4 byref(): 4
name: Q range: 4 getattr(): 4 byref(): 4
name: R range: 4 getattr(): 4 byref(): 4
name: S range: 4 getattr(): 4 byref(): 4
.
-----------------------------------------------------------------
Ran 19 tests in 0.056s
OK
Now looking at the results - it seems the byref() function is where the
difference lies - as getattr() returns the same value for both x064/xlc
and x065/gcc
Hope this helps!
----------
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue27643>
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