gistfile1.txt

```
Attaching 1 probe...
Input: text1
Input: text2
Input: text3
Input: text1
bpf got: 5 text1
bpf got: 5 text2
bpf got: 5 text3
bpf got: 5 text1
```

This works because the `str` call sets an upper bound, `min(arg1, 64)`:

```
  14: (07) r2 += 1
  15: (b7) r3 = 64
  16: (2d) if r3 > r2 goto pc+1
  17: (b7) r2 = 64
```

script.bt

uprobe:./dale:fn {
  printf("bpf got: %d %s\n", arg1, str(arg0, arg1));
}

test.c

// compile with gcc -O0 test.c -o dale -g

#include <stdio.h>
#include <string.h>

int fn(char * b, size_t len) {
  char buf[256] = {0};
  len = len > 255 ? 255 : len;
  strncpy(buf, b, len);
  buf[len] = '\0';
  printf("Input: %s\n", buf);
}


int main(void) {
  char buf[1024] = "text1text2text3";
  strncpy(buf+1000, buf, 5);
  fn(buf, 5);
  fn(buf+5, 5);
  fn(buf+10, 5);
  fn(buf+1000, 5);
}