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List:       xerces-c-dev
Subject:    [jira] [Created] (XERCESC-2049) memcpy used on overlapping memory regions causes sanity test failure
From:       "Bill Blough (JIRA)" <xerces-c-dev () xml ! apache ! org>
Date:       2015-05-02 4:15:08
Message-ID: JIRA.12826698.1430540072000.55929.1430540108222 () Atlassian ! JIRA
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Bill Blough created XERCESC-2049:
------------------------------------

             Summary: 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


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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