1 #include <stdio.h>
2 
3 // This simple program is to demonstrate the capability of the lldb command
4 // "breakpoint command add" to add a set of commands to a breakpoint to be
5 // executed when the breakpoint is hit.
6 //
7 // In particular, we want to break within c(), but only if the immediate caller
8 // is a().
9 
10 int a(int);
11 int b(int);
12 int c(int);
13 
14 int a(int val)
15 {
16     if (val <= 1)
17         return b(val);
18     else if (val >= 3)
19         return c(val); // Find the line number where c's parent frame is a here.
20 
21     return val;
22 }
23 
24 int b(int val)
25 {
26     return c(val);
27 }
28 
29 int c(int val)
30 {
31     return val + 3;
32 }
33 
34 int main (int argc, char const *argv[])
35 {
36     int A1 = a(1);  // a(1) -> b(1) -> c(1)
37     printf("a(1) returns %d\n", A1);
38 
39     int B2 = b(2);  // b(2) -> c(2)
40     printf("b(2) returns %d\n", B2);
41 
42     int A3 = a(3);  // a(3) -> c(3)
43     printf("a(3) returns %d\n", A3);
44 
45     return 0;
46 }
47