E1:     C1 CALL pred tabled_read.main/2-0 (det) tabled_read.m:20
mdb> echo on
Command echo enabled.
mdb> register --quiet
mdb> context none
Contexts will not be printed.
mdb> table_io allow
mdb> table_io
I/O tabling has not yet started.
mdb> break tabled_read__test
 0: + stop  interface pred tabled_read.test/5-0 (det)
mdb> table_io start
I/O tabling started.
mdb> continue
      E2:     C2 CALL pred tabled_read.test/5-0 (det)
mdb> finish -n
      E3:     C2 EXIT pred tabled_read.test/5-0 (det)
mdb> print *
       Stream (arg 1)         	c_pointer(0xXXXX)
       SoFar (arg 2)          	0
       N (arg 3)              	123
mdb> retry -o -a
      E2:     C2 CALL pred tabled_read.test/5-0 (det)
mdb> print *
       Stream (arg 1)         	c_pointer(0xXXXX)
       SoFar (arg 2)          	0
mdb> finish -n
      E3:     C2 EXIT pred tabled_read.test/5-0 (det)
mdb> print *
       Stream (arg 1)         	c_pointer(0xXXXX)
       SoFar (arg 2)          	0
       N (arg 3)              	123
mdb> table_io end
I/O tabling stopped.
mdb> continue
123
456
      E4:     C3 CALL pred tabled_read.test/5-0 (det)
mdb> finish -n
      E5:     C3 EXIT pred tabled_read.test/5-0 (det)
mdb> print *
       Stream (arg 1)         	c_pointer(0xXXXX)
       SoFar (arg 2)          	0
       N (arg 3)              	789
mdb> retry -f
      E4:     C3 CALL pred tabled_read.test/5-0 (det)
mdb> finish -n
      E6:     C3 EXIT pred tabled_read.test/5-0 (det)
mdb> print *
       Stream (arg 1)         	c_pointer(0xXXXX)
       SoFar (arg 2)          	0
       N (arg 3)              	42
mdb> continue -S
42