set test "substr"
set ::result_string {Hello World!
0,0: 
-1,10: 
10,0: 
0,1: H
1,1: e
2,1: l
2,5: llo W
6,1: W
11,1: !
11,100: !
12,1: 
0,10: Hello Worl
0,100: Hello World!
0,100000: Hello World!}
stap_run2 $srcdir/$subdir/$test.stp