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https://issues.apache.org/jira/browse/HADOOP-9707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HADOOP-9707:
-------------------------------
Resolution: Fixed
Fix Version/s: 2.1.0-beta
3.0.0
Hadoop Flags: Reviewed
Status: Resolved (was: Patch Available)
Thanks for the patch, Todd. And also thanks for the input, Brian. I've
committed this to branch-2, branch-2.1-beta and trunk.
> Fix register lists for crc32c inline assembly
> ---------------------------------------------
>
> Key: HADOOP-9707
> URL: https://issues.apache.org/jira/browse/HADOOP-9707
> Project: Hadoop Common
> Issue Type: Bug
> Components: util
> Affects Versions: 3.0.0, 2.1.0-beta
> Reporter: Todd Lipcon
> Assignee: Todd Lipcon
> Priority: Minor
> Fix For: 3.0.0, 2.1.0-beta
>
> Attachments: hadoop-9707.txt
>
>
> The inline assembly used for the crc32 instructions has an incorrect clobber
> list: the computed CRC values are "in-out" variables and thus need to use the
> "matching constraint" syntax in the clobber list.
> This doesn't seem to cause a problem now in Hadoop, but may break in a
> different compiler version which allocates registers differently, or may
> break when the same code is used in another context.
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