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Author skrah
Recipients brian.curtin, loewis, nadeem.vawda, skrah, vstinner
Date 2012-09-22.08:32:16
SpamBayes Score -1.0
Marked as misclassified Yes
Message-id <>
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.
Date User Action Args
2012-09-22 08:32:17skrahsetrecipients: + skrah, loewis, vstinner, nadeem.vawda, brian.curtin
2012-09-22 08:32:17skrahsetmessageid: <>
2012-09-22 08:32:17skrahlinkissue15993 messages
2012-09-22 08:32:16skrahcreate