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Author	ned.deily
Recipients	ned.deily, ronaldoussoren, wayedt
Date	2014-07-19.20:11:29
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1405800689.68.0.0491604621102.issue22012@psf.upfronthosting.co.za>
In-reply-to

Content
Doing a quick look, the results vary. Using current python.org 2.7.8 and 3.4.1 installers, the results are correct. These interpreters are built with Apple gcc-4.2 (non-LLVM) from Xcode 3.2.6. Other 2.7 and 3.4.x builds I have available at the moment, including the Apple-supplied Python 2.7, were built with clang LLVM and they all give the incorrect result. $ /usr/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" ((False, True, False, True), '2.7.5 (default, Mar 9 2014, 22:15:05) \n[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)]') $ arch -i386 /usr/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" ((False, True, False, True), '2.7.5 (default, Mar 9 2014, 22:15:05) \n[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)]') $ /usr/local/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" ((False, True, True, True), '2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]') $ /usr/local/bin/python2.7-32 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" ((False, True, True, True), '2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]') $ /usr/local/bin/python3.4 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" (False, True, True, True) 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] $ /usr/local/bin/python3.4-32 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" (False, True, True, True) 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] $ ./bin/python3.4 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)" (False, True, False, True) 3.4.1+ (3.4:d6b71971b228, Jul 16 2014, 16:30:56) [GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)]

Doing a quick look, the results vary.  Using current python.org 2.7.8 and 3.4.1 installers, the results are correct.  These interpreters are built with Apple gcc-4.2 (non-LLVM) from Xcode 3.2.6.  Other 2.7 and 3.4.x builds I have available at the moment, including the Apple-supplied Python 2.7, were built with clang LLVM and they all give the incorrect result.
  
$ /usr/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
((False, True, False, True), '2.7.5 (default, Mar  9 2014, 22:15:05) \n[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)]')

$ arch -i386 /usr/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
((False, True, False, True), '2.7.5 (default, Mar  9 2014, 22:15:05) \n[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)]')

$ /usr/local/bin/python2.7 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
((False, True, True, True), '2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]')

$ /usr/local/bin/python2.7-32 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
((False, True, True, True), '2.7.8 (v2.7.8:ee879c0ffa11, Jun 29 2014, 21:07:35) \n[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]')

$ /usr/local/bin/python3.4 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
(False, True, True, True) 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]

$ /usr/local/bin/python3.4-32 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
(False, True, True, True) 3.4.1 (v3.4.1:c0e311e010fc, May 18 2014, 00:54:21)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)]

$ ./bin/python3.4 -c "import sys,struct;print(struct.unpack('????', b'\x00\x01\x02\x03'), sys.version)"
(False, True, False, True) 3.4.1+ (3.4:d6b71971b228, Jul 16 2014, 16:30:56)
[GCC 4.2.1 Compatible Apple LLVM 5.1 (clang-503.0.40)]

History
Date	User	Action	Args
2014-07-19 20:11:29	ned.deily	set	recipients: + ned.deily, ronaldoussoren, wayedt
2014-07-19 20:11:29	ned.deily	set	messageid: <1405800689.68.0.0491604621102.issue22012@psf.upfronthosting.co.za>
2014-07-19 20:11:29	ned.deily	link	issue22012 messages
2014-07-19 20:11:29	ned.deily	create