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Posted to dev@etch.apache.org by "Thomas Marsh (JIRA)" <ji...@apache.org> on 2011/09/12 23:43:09 UTC
[jira] [Created] (ETCH-172) 64-bit platforms not supported in C
binding
64-bit platforms not supported in C binding
-------------------------------------------
Key: ETCH-172
URL: https://issues.apache.org/jira/browse/ETCH-172
Project: Etch
Issue Type: Bug
Components: c-binding
Environment: Linux x86_64 (tested on CentOS 5.6)
Reporter: Thomas Marsh
Priority: Blocker
It appears that there may be unsafe assumptions about bit size in the hash table implementation. All unit tests which require idname generation currently fail on 64 bit platforms. Rather than requiring that clients be compiled with "-m32" on Linux (as the CMakeList.txt explicitly adds), the platform should instead compile and run cleanly on 64 bit platforms and without requiring a 32bit library stack. The hashtable implementation should run natively in 64 bit space, or as a workaround, limit itself to 32bit hash space.
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[jira] [Commented] (ETCH-172) 64-bit platforms not supported in C
binding
Posted by "Thomas Marsh (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/ETCH-172?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120502#comment-13120502 ]
Thomas Marsh commented on ETCH-172:
-----------------------------------
I noticed there are some 64 bit routines on Bob Jenkins' site. See http://burtleburtle.net/bob/c/lookup8.c and http://burtleburtle.net/bob/hash/evahash.html#hash64. I haven't had time to further debug the problem to verify the exact problem, but if it is the hashing routines, perhaps this is helpful.
> 64-bit platforms not supported in C binding
> -------------------------------------------
>
> Key: ETCH-172
> URL: https://issues.apache.org/jira/browse/ETCH-172
> Project: Etch
> Issue Type: Bug
> Components: c-binding
> Environment: Linux x86_64 (tested on CentOS 5.6)
> Reporter: Thomas Marsh
> Priority: Blocker
>
> It appears that there may be unsafe assumptions about bit size in the hash table implementation. All unit tests which require idname generation currently fail on 64 bit platforms. Rather than requiring that clients be compiled with "-m32" on Linux (as the CMakeList.txt explicitly adds), the platform should instead compile and run cleanly on 64 bit platforms and without requiring a 32bit library stack. The hashtable implementation should run natively in 64 bit space, or as a workaround, limit itself to 32bit hash space.
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