[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Changes by Santoso Wijaya santoso.wij...@gmail.com: -- nosy: +santa4nt ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Brian Curtin cur...@acm.org added the comment: Ah, that's simple enough :) Minor changes to the test patch: uname caches it's results, so I added a few lines to clear the cache before the uname calls. In order to not affect other tests, the whole thing is in a try/finally so we don't leave anything behind in cache. The test passes on both a 32 and 64 bit Python. -- Added file: http://bugs.python.org/file16622/uname_WOW64_test2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
R. David Murray rdmur...@bitdance.com added the comment: Patches applied to trunk in r79294, py3k in r79298. Should this be backported? -- keywords: -needs review stage: patch review - commit review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Marc-Andre Lemburg m...@egenix.com added the comment: R. David Murray wrote: R. David Murray rdmur...@bitdance.com added the comment: Patches applied to trunk in r79294, py3k in r79298. Should this be backported? I don't think so: applications relying on the previous behavior would need to be updated and requiring this for a patch level release of Python is not a good idea. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Changes by R. David Murray rdmur...@bitdance.com: -- resolution: accepted - fixed stage: commit review - committed/rejected status: open - closed versions: -Python 2.6, Python 3.1 ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Brian Curtin cur...@acm.org added the comment: #7347 depends on this for proper testing, and arch_misrepresented.diff seems to have been labeled as acceptable. Would anyone be willing to check it in? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
R. David Murray rdmur...@bitdance.com added the comment: I think it is actually pretty straightforward to write a *unit* test for this. We just need to check that the logic works correctly given the expected presence or absence of the environment variables. That doesn't test whether or not the right thing happens in the environment when you actually run a WOW64, but I don't think it is Python's responsibility to test that. If Microsoft changes the API, platform will break and the tests won't notice, but I don't think there's anything we can do about that, since as you say the API is the only way to find out what to expect for results. Test patch attached. Brian, if you can confirm that this test fails before your patch and succeeds afterward, I will commit both patches. -- assignee: - r.david.murray nosy: +r.david.murray Added file: http://bugs.python.org/file16592/uname_WOW64_test.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
New submission from Brian Curtin cur...@acm.org: When running 32-bit Python on a 64-bit version of Windows, therefore running the process in WOW64 mode, platform.machine returns a misleading value. When running in WOW64, the processor architecture is masked to appear as x86 when the machine is actually AMD64 (which you see on a 64-bit app on 64-bit OS). The change involves looking at an environment variable only set on WOW64 processes to see the native architecture. See http://blogs.msdn.com/david.wang/archive/2006/03/26/HOWTO-Detect-Process-Bitness.aspx The patch does not include any test, as I'm not really sure how you could test this without using the change itself to figure out when it should be tested. Suggestions would be appreciated. -- components: Library (Lib), Windows files: arch_misrepresented.diff keywords: needs review, patch, patch messages: 98890 nosy: brian.curtin priority: normal severity: normal stage: patch review status: open title: 32-bit Python on 64-bit Windows reports incorrect architecture type: behavior versions: Python 2.6, Python 2.7, Python 3.1, Python 3.2 Added file: http://bugs.python.org/file16143/arch_misrepresented.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Changes by Antoine Pitrou pit...@free.fr: -- nosy: +lemburg ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Antoine Pitrou pit...@free.fr added the comment:
It's also inconsistent with Linux behaviour:
import sys
sys.maxsize
2147483647
import platform
platform.machine()
'x86_64'
platform.architecture()
('32bit', 'ELF')
(on a Python compiled with -m32 on a 64-bit Linux)
--
nosy: +pitrou
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[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Antoine Pitrou pit...@free.fr added the comment: The test could simply check that platform.machine() never returns x86 when sys.maxsize is greater than 2**32. (and it would even be platform-agnostic) -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Marc-Andre Lemburg m...@egenix.com added the comment: The patch looks ok. Since we are emulating the Unix uname() function here, we might as well mimic its inconsistencies. Note that platform.machine() and platform.processor() are not really very reliable ways of determining the machine type or processor. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Marc-Andre Lemburg m...@egenix.com added the comment: Antoine Pitrou wrote: Antoine Pitrou pit...@free.fr added the comment: The test could simply check that platform.machine() never returns x86 when sys.maxsize is greater than 2**32. (and it would even be platform-agnostic) I'm not sure what such a test would prove, e.g. on 64-bit Mac OS X, platform.machine() return 'i386'. That could be mapped to 'x86'... Note that 'x86_64' is just a 'x86' compatible processor with the AMD 64-bit extensions, so 'x86' is a superset of 'x86_64'. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue7860] 32-bit Python on 64-bit Windows reports incorrect architecture
Antoine Pitrou pit...@free.fr added the comment: I'm not sure what such a test would prove, e.g. on 64-bit Mac OS X, platform.machine() return 'i386'. That could be mapped to 'x86'... You're right. There doesn't seem to be much consistency accross platforms. Note that 'x86_64' is just a 'x86' compatible processor with the AMD 64-bit extensions, so 'x86' is a superset of 'x86_64'. Oops, indeed. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue7860 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
