  FT_ATSFontGetFileReference( ATSFontRef  ats_font_id,
                              FSRef*      ats_font_ref )
  {
#if defined( MAC_OS_X_VERSION_10_5 ) && \
    ( MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5 )

    OSStatus  err;

    err = ATSFontGetFileReference( ats_font_id, ats_font_ref );

    return err;
#elif __LP64__ /* No 64bit Carbon API on legacy platforms */
    FT_UNUSED( ats_font_id );
    FT_UNUSED( ats_font_ref );


    return fnfErr;
#else /* 32bit Carbon API on legacy platforms */
    OSStatus  err;
    FSSpec    spec;


    err = ATSFontGetFileSpecification( ats_font_id, &spec );
    if ( noErr == err )
      err = FSpMakeFSRef( &spec, ats_font_ref );

    return err;
#endif
  }

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.