static double util_pointsize( wmfAPI* API, wmfFont* font, char* str, double font_height)
{
  wmf_magick_t
    *ddata = WMF_MAGICK_GetData(API);

  Image
    *image = ddata->image;

  TypeMetric
    metrics;

  DrawInfo
    *draw_info;

  double
    pointsize = 0;

  draw_info=ddata->draw_info;
  if (draw_info == (const DrawInfo *) NULL)
    return 0;

  draw_info->font=WMF_FONT_PSNAME(font);
  draw_info->pointsize=font_height;
  draw_info->text=str;

  if (GetTypeMetrics(image, draw_info, &metrics) != MagickFalse)
    {

      if (strlen(str) == 1)
        {
          pointsize = (font_height *
                       ( font_height / (metrics.ascent + fabs(metrics.descent))));
          draw_info->pointsize = pointsize;
          if (GetTypeMetrics(image, draw_info, &metrics) != MagickFalse)
            pointsize *= (font_height / ( metrics.ascent + fabs(metrics.descent)));
        }
      else
        {
          pointsize = (font_height * (font_height / (metrics.height)));
          draw_info->pointsize = pointsize;
          if (GetTypeMetrics(image, draw_info, &metrics) != MagickFalse)
            pointsize *= (font_height / metrics.height);

        }
#if 0
      draw_info.pointsize = pointsize;
      if (GetTypeMetrics(image, &draw_info, &metrics) != MagickFalse)
        pointsize *= (font_height / (metrics.ascent + fabs(metrics.descent)));
      pointsize *= 1.114286; /* Magic number computed through trial and error */
#endif
    }

  draw_info->font=NULL;
  draw_info->text=NULL;
#if 0
  printf("String    = %s\n", str);
  printf("Font      = %s\n", WMF_FONT_PSNAME(font));
  printf("lfHeight  = %g\n", font_height);
  printf("bounds    = %g,%g %g,%g\n", metrics.bounds.x1, metrics.bounds.y1,
         metrics.bounds.x2,metrics.bounds.y2);
  printf("ascent    = %g\n", metrics.ascent);
  printf("descent   = %g\n", metrics.descent);
  printf("height    = %g\n", metrics.height);
  printf("Pointsize = %g\n", pointsize);
#endif

  return floor(pointsize);
}

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.