1reading symbolic information ...
2[1] stop at 20
3[1] stopped in $b1 at line 20
4   20   	j = j + i;
5$b1, line 20 in "nested.c"
6sub(), line 20 in "nested.c"
7main(0x1, 0x7fffebe4, 0x7fffebec), line 10 in "nested.c"
81 0
9[3] stop at 24
10[3] stopped in sub at line 24
11   24   	j = j + i;
12sub(), line 24 in "nested.c"
13main(0x1, 0x7fffebe4, 0x7fffebec), line 10 in "nested.c"
1411 0
153
16
17