modules/javafx.graphics/src/main/java/com/sun/marlin/DCollinearSimplifier.java

*** 139,149 ****
          }
      }
  
      private static double getSlope(double x1, double y1, double x2, double y2) {
          double dy = y2 - y1;
!         if (dy == 0d) {
              return (x2 > x1) ? Double.POSITIVE_INFINITY
                     : Double.NEGATIVE_INFINITY;
          }
          return (x2 - x1) / dy;
      }
--- 139,149 ----
          }
      }
  
      private static double getSlope(double x1, double y1, double x2, double y2) {
          double dy = y2 - y1;
!         if (dy == 0.0d) {
              return (x2 > x1) ? Double.POSITIVE_INFINITY
                     : Double.NEGATIVE_INFINITY;
          }
          return (x2 - x1) / dy;
      }