Message 170971 - Python tracker

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In-reply-to
Author	skrah
Recipients	brian.curtin, loewis, nadeem.vawda, skrah, vstinner
Date	2012年09月22日.08:32:16
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1348302737.57.0.729142629575.issue15993@psf.upfronthosting.co.za>

Content
System: Windows 7 64-bit Build (unpatched): PCBuild\Win32-pgo\python.exe, trained with profile.bat In the unpatched version, I stepped through this test case in the debugger: import array a = array.array('Q', [1]) m = memoryview(a) m[0] = 1 At Objects/memoryobject.c:1572: llu == 1 At Objects/memoryobject.c:1782: pylong_as_llu returned value 4294967296 So I think it's pretty safe to say that this is indeed an optimizer bug.

Content

System: Windows 7 64-bit
Build (unpatched): PCBuild\Win32-pgo\python.exe, trained with profile.bat
In the unpatched version, I stepped through this test case in the debugger:
import array
a = array.array('Q', [1])
m = memoryview(a)
m[0] = 1
At Objects/memoryobject.c:1572: llu == 1
At Objects/memoryobject.c:1782: pylong_as_llu returned value 4294967296
So I think it's pretty safe to say that this is indeed an optimizer bug.

History
Date	User	Action	Args
2012年09月22日 08:32:17	skrah	set	recipients: + skrah, loewis, vstinner, nadeem.vawda, brian.curtin
2012年09月22日 08:32:17	skrah	set	messageid: <1348302737.57.0.729142629575.issue15993@psf.upfronthosting.co.za>
2012年09月22日 08:32:17	skrah	link	issue15993 messages
2012年09月22日 08:32:16	skrah	create

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