anchor.diff:    action end_feature {
       if (cs < lexer_first_final) {
         if (raise_lexer_error != NULL) {
  -        int count = 0;
  +        size_t count = 0;
           int newstr_count = 0;
           size_t len;
           const char *buff;
  
positive.code:   lexer->content_end = 0;
    lexer->content_len = 0;
    lexer->mark = 0;
    lexer->field_len = 0;
    lexer->keyword_start = 0;
    lexer->keyword_end = 0;
    lexer->next_keyword_start = 0;
  
negative.code:     eof = pe;
      
      assert(*pe == '\0' && "pointer does not end on NULL");
      
      %% write init;
      %% write exec;
  