1 //===-- main.c --------------------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 #include <stdio.h>
9 
10 // This simple program is to demonstrate the capability of the lldb command
11 // "breakpoint command add" to add a set of commands to a breakpoint to be
12 // executed when the breakpoint is hit.
13 //
14 // In particular, we want to break within c(), but only if the immediate caller
15 // is a().
16 
17 int a(int);
18 int b(int);
19 int c(int);
20 
21 int a(int val)
22 {
23     if (val <= 1)
24         return b(val);
25     else if (val >= 3)
26         return c(val); // Find the line number where c's parent frame is a here.
27 
28     return val;
29 }
30 
31 int b(int val)
32 {
33     return c(val);
34 }
35 
36 int c(int val)
37 {
38     return val + 3;
39 }
40 
41 int main (int argc, char const *argv[])
42 {
43     int A1 = a(1);  // a(1) -> b(1) -> c(1)
44     printf("a(1) returns %d\n", A1);
45 
46     int B2 = b(2);  // b(2) -> c(2)
47     printf("b(2) returns %d\n", B2);
48 
49     int A3 = a(3);  // a(3) -> c(3)
50     printf("a(3) returns %d\n", A3);
51 
52     return 0;
53 }
54