  FT_Set_Char_Size( FT_Face     face,
                    FT_F26Dot6  char_width,
                    FT_F26Dot6  char_height,
                    FT_UInt     horz_resolution,
                    FT_UInt     vert_resolution )
  {
    FT_Size_RequestRec  req;


    if ( !char_width )
      char_width = char_height;
    else if ( !char_height )
      char_height = char_width;

    if ( !horz_resolution )
      horz_resolution = vert_resolution;
    else if ( !vert_resolution )
      vert_resolution = horz_resolution;

    if ( char_width  < 1 * 64 )
      char_width  = 1 * 64;
    if ( char_height < 1 * 64 )
      char_height = 1 * 64;

    if ( !horz_resolution )
      horz_resolution = vert_resolution = 72;

    req.type           = FT_SIZE_REQUEST_TYPE_NOMINAL;
    req.width          = char_width;
    req.height         = char_height;
    req.horiResolution = horz_resolution;
    req.vertResolution = vert_resolution;

    return FT_Request_Size( face, &req );
  }

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.