reading symbolic information ...
[1] stop at 20
[1] stopped in $b1 at line 20
   20   	j = j + i;
$b1, line 20 in "dump.c"
sub(), line 20 in "dump.c"
main(0x1, 0x7fffebe8, 0x7fffebf0), line 10 in "dump.c"
----- 
$b1, line 20 in "dump.c"
j = 0
----- 
sub(), line 20 in "dump.c"
i = 1
j = 0
----- 
main(0x1, 0x7fffebe8, 0x7fffebf0), line 10 in "dump.c"
----- 
$b1, line 20 in "dump.c"
j = 0

sub(), line 20 in "dump.c"
i = 1
j = 0

main(0x1, 0x7fffebe8, 0x7fffebf0), line 10 in "dump.c"

in "":
errno = 0
_dbargs = 0
mcount = 5
environ = 2147478512
dump.i = 3