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https://issues.apache.org/jira/browse/HDFS-10527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15334210#comment-15334210
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James Clampffer commented on HDFS-10527:
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Thanks for the review [~xiaowei.zhu], I committed this to HDFS-8707.
> libhdfs++: hdfsGetBlockLocations doesn't null terminate ip address strings
> --------------------------------------------------------------------------
>
> Key: HDFS-10527
> URL: https://issues.apache.org/jira/browse/HDFS-10527
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: hdfs-client
> Reporter: James Clampffer
> Assignee: James Clampffer
> Attachments: HDFS-10527.HDFS-8707.000.patch
>
>
> Code looks like this
> {code}
> strncpy(buf, ipaddr.c_str(),ipaddr.size());
> {code}
> But should be
> {code}
> strncpy(buf, ipaddr.c_str(),ipaddr.size()+1);
> {code}
> In order to make sure there is at least 1 null terminating byte. If we could
> run the minidfscluster an another process and run valgrind on the libhdfs++
> tests this would show up really quickly as a sequence of invalid reads when
> that const char* was passed to std::string::string(const char*), strlen, or
> strcpy.
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