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From "Douglas Creager (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AVRO-1034) Avro C Resolved reader does not initialize children of arrays, resulting in segmentation faults
Date Thu, 01 Mar 2012 04:02:00 GMT

     [ https://issues.apache.org/jira/browse/AVRO-1034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Douglas Creager updated AVRO-1034:

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

Committed this to SVN to make sure it's ready for when Doug cuts the 1.6.3 release.
> Avro C Resolved reader does not initialize children of arrays, resulting in segmentation
> -----------------------------------------------------------------------------------------------
>                 Key: AVRO-1034
>                 URL: https://issues.apache.org/jira/browse/AVRO-1034
>             Project: Avro
>          Issue Type: Bug
>          Components: c
>    Affects Versions: 1.6.2
>         Environment: GNU/Linux Ubuntu 11.10 64-bit
>            Reporter: Vivek Nadkarni
>             Fix For: 1.6.3
>         Attachments: 0001-AVRO-1034.-C-Resolved-reader-initializes-child-array.patch,
0001-AVRO-1034.-C-Resolved-reader-initializes-child-array.patch, AVRO-1034.patch, avro-1034-test-2.c,
>   Original Estimate: 168h
>  Remaining Estimate: 168h
> As I did in AVRO-984, I created a test program that creates an avro 
> value corresponding to the following schema: 
>   {"type":"array", "items": {"type": "array", "items": "long"}}
> The avro_value is then resolved using a resolved_reader, and an 
> attempt is made to read from the resolved_reader. This results in a
> segmentation fault on Linux.
> I believe this issue is similar to the issue in AVRO-984, in which
> nested arrays did not work because avro_resolved_array_writer_init()
> did not recursively call the init function on its children. In that
> case the initialization had to be deferred until a new item was
> appended to the array.
> I believe that avro_resolved_array_reader_init() should also
> recursively call the init function on its children, in a deferred
> manner as in AVRO-984, but I don't know how to implement this yet.
> I will attach a test program that shows the crash. 
> Thanks,
> Vivek

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