61   FILE *fp;  in main()  local
65   fp = fropen2(&cookie_var, f_read);  in main()
66   assert(fp);  in main()
68   assert(fileno(fp) == -1);  in main()
69   assert(fgets(buf, sizeof(buf), fp));  in main()
71   assert(!fclose(fp));  in main()
74   fp = fwopen2(&cookie_var, f_write);  in main()
75   assert(fp);  in main()
76   assert(fileno(fp) == -1);  in main()
77   assert(fputs("test", fp) >= 0);  in main()
78   assert(!fclose(fp));  in main()
81   fp = funopen2(&cookie_var, f_read, f_write, NULL, NULL, f_close);  in main()
82   assert(fp);  in main()
83   assert(fileno(fp) == -1);  in main()
84   assert(fgets(buf, sizeof(buf), fp));  in main()
86   assert(fputs("test", fp) >= 0);  in main()
87   assert(!fflush(fp));  in main()
88   assert(!fclose(fp));  in main()
91   fp = funopen2(&cookie_var, f_read, NULL, f_seek, NULL, NULL);  in main()
92   assert(fp);  in main()
93   assert(fileno(fp) == -1);  in main()
94   assert(fseek(fp, 100, SEEK_SET) == 0);  in main()
95   assert(fgets(buf, sizeof(buf), fp));  in main()
97   assert(!fclose(fp));  in main()
100   fp = funopen2(&cookie_var, NULL, f_write, NULL, f_flush, NULL);  in main()
101   assert(fp);  in main()
102   assert(fileno(fp) == -1);  in main()
103   assert(fputs("test", fp) >= 0);  in main()
104   assert(!fflush(fp));  in main()
105   assert(fputs("test", fp) >= 0);  in main()
107   assert(!fclose(fp));  in main()