Bugs item #1470353, was opened at 2006-04-14 15:11
Message generated for change (Settings changed) made by theller
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Andrew I MacIntyre (aimacintyre)
>Assigned to: Thomas Heller (theller)
Summary: test_ctypes fails on FreeBSD 4.x
Initial Comment:
$ ./python Lib/test/regrtest.py test_ctypes
test_ctypes
test test_ctypes failed -- Traceback (most recent call
last):
File
"/home/andymac/dev/python-svn-head/Lib/ctypes/test/test_functions.py",
line 333, in test_struct_return_2H
self.failUnlessEqual((s2h.x, s2h.y), (99*2, 88*3))
AssertionError: (-1004, 2123) != (198, 264)
1 test failed:
test_ctypes
[41158 refs]
This is with a subversion checkout updated to 5am AEST
(Aust) 14Apr06, debug build.
The returned tuple values (s2h.x, s2h.y) appear to vary
from run to run, so it looks like something isn't where
its expected.
This is with a FreeBSD 4.8 i386 system (not
particularly recent), using gcc 2.95.4. A quick and
dirty test (in C) suggests that its not an alignment
issue for the 2 shorts in the S2H struct.
Ideas for trying to debug this further?
----------------------------------------------------------------------
Comment By: Thomas Heller (theller)
Date: 2006-04-14 21:09
Message:
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Of course I meant FreeBSD instead of NetBSD, sorry.
----------------------------------------------------------------------
Comment By: Thomas Heller (theller)
Date: 2006-04-14 21:08
Message:
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user_id=11105
This looks very similar to a problem I recently 'fixed' on
OpenBSD - maybe it is even a bug in libffi. On OpenBSD x86
the problem seemed to be that small structures are passed
like short or int. You could try to fix it by adding the
appropriate definition in
Modules/_ctypes/libffi/src/x86/ffi.c, at lines 124 and lines
138. Maybe changing them to
#if !defined(X86_WIN32) && !defined(__OpenBSD__) &&
!defined(__NetBSD__)
or whatever the magic symbol for Netbsd is.
Unfortunately I do not have access to a netbsd machine myself.
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