• Noel Grandin's avatar
    tdf#117044 Base crash when attempting to edit a table definition · fd73aa73
    Noel Grandin yazdı
    this story started in
        commit  433fc221 (patch)
        sal_uIntPtr->sal_Int32 in MultiSelection
    which caused a regression, reported in tdf#116981.
    I attempted to fix it in
        commit 235d61890512894e27f4f81e38a325eee3c67b30
        Date:   Fri Apr 13 17:14:59 2018 +0200
        tdf#116981 Base when deleting table column
        commit 0973e1f4
        Date:   Mon Apr 16 08:28:16 2018 +0200
        follow on for tdf#116981
    But my analysis was wrong.
    To recap, and get it right:
    Before all this, MultiSelection stored it's values internally as
    sal_uIntPtr, but returned them as long in FirstSelected(),
    NextSelected(),and SFX_ENDOFSELECTION was defined to be ULONG_MAX.
    On 64-bit Linux, sal_uIntPtr is typedefed to sal_uInt64, and ULONG_MAX
    is 2^64, which means that previously, the SFX_ENDOFSELECTION value was
    being converted from 2^64 to -1 when it was returned, which was why
    these loops worked.
    So convert SFX_ENDOFSELECTION to -1 to match how how the external code
    wants it to be (and the code frequently uses -1 instead of
    The modification to MultiSelection::Select is necessary because
    previously, nCurMin and nCurMax would be == ULONG_MAX,
    and we would, somewhat unintuitively, end up in the
        // expand on left side?
        if( nTmpMax < nCurMin )
    part of the logic, which would do the right thing, even if a little
    Change-Id: I7c830b0392add394d8c294247f75a2ffe8017c24
    Reviewed-on: https://gerrit.libreoffice.org/53022Tested-by: 's avatarJenkins <ci@libreoffice.org>
    Reviewed-by: 's avatarNoel Grandin <noel.grandin@collabora.co.uk>
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