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https://issues.apache.org/jira/browse/ORC-698?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17560785#comment-17560785
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Hao Fu commented on ORC-698:
----------------------------
This seems can be resolved.
```
haofu@C02CJ3WFMD6T src % ./orc-scan
../../../examples/corrupt/negative_dict_entry_lengths.orc
Caught exception in ../../../examples/corrupt/negative_dict_entry_lengths.orc:
Negative dictionary entry length
```
> Add safety check for negative dictionary lengths
> ------------------------------------------------
>
> Key: ORC-698
> URL: https://issues.apache.org/jira/browse/ORC-698
> Project: ORC
> Issue Type: Bug
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Priority: Major
>
> In testing ORC-697, we don't fail when reading
> corrupt/negative_dict_entry_lengths.orc because we don't try to look at the
> strings. We should add a check when reading the dictionaries that the lengths
> are between 0 and the end of the buffer.
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