output: #fixed code
                                  @Test
      @Ignore
      public void testBackslashEscapingOld() throws IOException {
          String code =
                  "one,two,three\n"
                          + "on\\\"e,two\n"
                          + "on\"e,two\n"
                          + "one,\"tw\\\"o\"\n"
                          + "one,\"t\\,wo\"\n"
                          + "one,two,\"th,ree\"\n"
                          + "\"a\\\\\"\n"
                          + "a\\,b\n"
                          + "\"a\\\\,b\"";
          String[][] res = {
                  {"one", "two", "three"},
                  {"on\\\"e", "two"},
                  {"on\"e", "two"},
                  {"one", "tw\"o"},
                  {"one", "t\\,wo"},  // backslash in quotes only escapes a delimiter (",")
                  {"one", "two", "th,ree"},
                  {"a\\\\"},     // backslash in quotes only escapes a delimiter (",")
                  {"a\\", "b"},  // a backslash must be returnd
                  {"a\\\\,b"}    // backslash in quotes only escapes a delimiter (",")
          };
          CSVParser parser = new CSVParser(new StringReader(code));
          List<CSVRecord> records = parser.getRecords();
          assertEquals(res.length, records.size());
          assertTrue(records.size() > 0);
          for (int i = 0; i < res.length; i++) {
              assertTrue(Arrays.equals(res[i], records.get(i).values()));
          }
      }
input: #vulnerable code 
                                  @Test
      @Ignore
      public void testBackslashEscapingOld() throws IOException {
          String code =
                  "one,two,three\n"
                          + "on\\\"e,two\n"
                          + "on\"e,two\n"
                          + "one,\"tw\\\"o\"\n"
                          + "one,\"t\\,wo\"\n"
                          + "one,two,\"th,ree\"\n"
                          + "\"a\\\\\"\n"
                          + "a\\,b\n"
                          + "\"a\\\\,b\"";
          String[][] res = {
                  {"one", "two", "three"},
                  {"on\\\"e", "two"},
                  {"on\"e", "two"},
                  {"one", "tw\"o"},
                  {"one", "t\\,wo"},  // backslash in quotes only escapes a delimiter (",")
                  {"one", "two", "th,ree"},
                  {"a\\\\"},     // backslash in quotes only escapes a delimiter (",")
                  {"a\\", "b"},  // a backslash must be returnd
                  {"a\\\\,b"}    // backslash in quotes only escapes a delimiter (",")
          };
          CSVParser parser = new CSVParser(new StringReader(code));
          String[][] tmp = parser.getRecords();
          assertEquals(res.length, tmp.length);
          assertTrue(tmp.length > 0);
          for (int i = 0; i < res.length; i++) {
              assertTrue(Arrays.equals(res[i], tmp[i]));
          }
      } 
                              #location 27 
                              #vulnerability type NULL_DEREFERENCE