    /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
    /*
     * This file is part of the LibreOffice project.
     *
     * This Source Code Form is subject to the terms of the Mozilla Public
     * License, v. 2.0. If a copy of the MPL was not distributed with this
     * file, You can obtain one at http://mozilla.org/MPL/2.0/.
     *
     * This file incorporates work covered by the following license notice:
     *
     *   Licensed to the Apache Software Foundation (ASF) under one or more
     *   contributor license agreements. See the NOTICE file distributed
     *   with this work for additional information regarding copyright
     *   ownership. The ASF licenses this file to you under the Apache
     *   License, Version 2.0 (the "License"); you may not use this file
     *   except in compliance with the License. You may obtain a copy of
     *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
     */

    #include <osl/file.h>
    #include <rtl/ustring.h>

    static sal_uInt32 osl_defCalcTextWidth( rtl_uString *ustrText )
    {
        return ustrText ? ustrText->length : 0;
    }

    oslFileError SAL_CALL osl_abbreviateSystemPath( rtl_uString *ustrSystemPath, rtl_uString **pustrCompacted, sal_uInt32 uMaxWidth, oslCalcTextWidthFunc pfnCalcWidth )
    {
        rtl_uString     *ustrPath = nullptr;
        rtl_uString     *ustrFile = nullptr;
        sal_uInt32      uPathWidth, uFileWidth;

        if ( !pfnCalcWidth )
            pfnCalcWidth = osl_defCalcTextWidth;

        {
            sal_Int32   iLastSlash = rtl_ustr_lastIndexOfChar_WithLength( ustrSystemPath->buffer, ustrSystemPath->length, SAL_PATHDELIMITER );

            if ( iLastSlash >= 0 )
            {
                rtl_uString_newFromStr_WithLength( &ustrPath, ustrSystemPath->buffer, iLastSlash );
                rtl_uString_newFromStr_WithLength( &ustrFile, &ustrSystemPath->buffer[iLastSlash], ustrSystemPath->length - iLastSlash );
            }
            else
            {
                rtl_uString_new( &ustrPath );
                rtl_uString_newFromString( &ustrFile, ustrSystemPath );
            }
        }

        uPathWidth = pfnCalcWidth( ustrPath );
        uFileWidth = pfnCalcWidth( ustrFile );

        /* First abbreviate the directory component of the path */

        while ( uPathWidth + uFileWidth > uMaxWidth )
        {
            if ( ustrPath->length > 3 )
            {
                ustrPath->length--;
                ustrPath->buffer[ustrPath->length-3] = '.';
                ustrPath->buffer[ustrPath->length-2] = '.';
                ustrPath->buffer[ustrPath->length-1] = '.';
                ustrPath->buffer[ustrPath->length] = 0;

                uPathWidth = pfnCalcWidth( ustrPath );
            }
            else
                break;
        }

        /* Now abbreviate file component */

        while ( uPathWidth + uFileWidth > uMaxWidth )
        {
            if ( ustrFile->length > 4 )
            {
                ustrFile->length--;
                ustrFile->buffer[ustrFile->length-3] = '.';
                ustrFile->buffer[ustrFile->length-2] = '.';
                ustrFile->buffer[ustrFile->length-1] = '.';
                ustrFile->buffer[ustrFile->length] = 0;

                uFileWidth = pfnCalcWidth( ustrFile );
            }
            else
                break;
        }

        rtl_uString_newConcat( pustrCompacted, ustrPath, ustrFile );

        /* Event now if path was compacted to ".../..." it can be to large */

        uPathWidth += uFileWidth;

        while ( uPathWidth > uMaxWidth )
        {
            (*pustrCompacted)->length--;
            (*pustrCompacted)->buffer[(*pustrCompacted)->length] = 0;
            uPathWidth = pfnCalcWidth( *pustrCompacted );
        }

        if ( ustrPath )
            rtl_uString_release( ustrPath );

        if ( ustrFile )
            rtl_uString_release( ustrFile );

        return osl_File_E_None;
    }

    /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

↑ V595 The 'ustrFile' pointer was utilized before it was verified against nullptr. Check lines: 83, 107.