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  1. Xerces-C++
  2. XERCESC-2049

memcpy used on overlapping memory regions causes sanity test failure

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 3.1.2
    • 3.2.0, 3.1.3
    • Utilities
    • None
    • Debian unstable (sid) and Debian stable (jessie) on amd64

    Description

      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.

      Attachments

        1. moveChars_overlap.diff
          0.4 kB
          Bill Blough

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. XERCESC-2051 Overlapping memcpy call

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Activity

            People

              amassari Alberto Massari
              billblough Bill Blough
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              Dates

                Created:
                Updated:
                Resolved: