Message 144044 - Python tracker
Message144044
| Author | vstinner |
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| Recipients | adam@NetBSD.org, loewis, mark.dickinson, skrah, vstinner |
| Date | 2011-09-14.19:34:12 |
| SpamBayes Score | 0.008536181 |
| Marked as misclassified | No |
| Message-id | <1316028853.12.0.610493401695.issue12973@psf.upfronthosting.co.za> |
| In-reply-to |
| Content | |
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Aaaah, int_pow. I was testing Python 3.3. I tested Python 2.7 with clang 2.8, optimization level at -03 and without -fwrapv... I'm still unable to reproduce the issue. It's maybe an optimization introduced by clang 2.9. -- This issue remembers me the great "What Every C Programmer Should Know About Undefined Behavior" article serie (3 parts). http://blog.llvm.org/2011/05/what-every-c-programmer-should-know.html http://blog.llvm.org/2011/05/what-every-c-programmer-should-know_14.html http://blog.llvm.org/2011/05/what-every-c-programmer-should-know_21.html See also this tool to detect such bug: http://blog.regehr.org/archives/508 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2011-09-14 19:34:13 | vstinner | set | recipients: + vstinner, loewis, mark.dickinson, skrah, adam@NetBSD.org |
| 2011-09-14 19:34:13 | vstinner | set | messageid: <1316028853.12.0.610493401695.issue12973@psf.upfronthosting.co.za> |
| 2011-09-14 19:34:12 | vstinner | link | issue12973 messages |
| 2011-09-14 19:34:12 | vstinner | create | |