src/java.base/share/classes/java/util/regex/Pattern.java

*** 1602,1612 ****
          for(int x=1; x<nCodePoints; x++)
              length = length * (x+1);
  
          String[] temp = new String[length];
  
!         int combClass[] = new int[nCodePoints];
          for(int x=0, i=0; x<nCodePoints; x++) {
              int c = Character.codePointAt(input, i);
              combClass[x] = getClass(c);
              i +=  Character.charCount(c);
          }
--- 1602,1612 ----
          for(int x=1; x<nCodePoints; x++)
              length = length * (x+1);
  
          String[] temp = new String[length];
  
!         int[] combClass = new int[nCodePoints];
          for(int x=0, i=0; x<nCodePoints; x++) {
              int c = Character.codePointAt(input, i);
              combClass[x] = getClass(c);
              i +=  Character.charCount(c);
          }