[jira] [Resolved] (XERCESC-2049) memcpy used on overlapping memory regions causes sanity test failure

["Alberto Massari (JIRA)" <xe...@xml.apache.org>]

     [ https://issues.apache.org/jira/browse/XERCESC-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alberto Massari resolved XERCESC-2049.
--------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.2.0
                   3.1.3
         Assignee: Alberto Massari

> memcpy used on overlapping memory regions causes sanity test failure
> --------------------------------------------------------------------
>
>                 Key: XERCESC-2049
>                 URL: https://issues.apache.org/jira/browse/XERCESC-2049
>             Project: Xerces-C++
>          Issue Type: Bug
>          Components: Utilities
>    Affects Versions: 3.1.2
>         Environment: Debian unstable (sid) and Debian stable (jessie) on amd64
>            Reporter: Bill Blough
>            Assignee: Alberto Massari
>             Fix For: 3.1.3, 3.2.0
>
>         Attachments: moveChars_overlap.diff
>
>
> On Debian Jessie (libc6 2.19, libstdc++ 4.9.2) and newer, sanityTest.pl fails its tests of XMLString::collapseWS.
> Tracing with GDB shows that XMLString::moveChars is corrupting the string.  I think this is likely due to memcpy being used on overlapping memory regions.
> Replacing the memcpy in  moveChars with memmove fixes the issue on my systems.  



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