1#include <algorithm>
2#include <functional>
3#include <map>
4#include <ranges>
5#include <vector>
6
7bool sort_less(int a, int b) {
8 __builtin_printf("break here");
9 return a < b;
10}
11
12bool ranges_sort_less(int a, int b) {
13 __builtin_printf("break here");
14 return a < b;
15}
16
17int view_transform(int a) {
18 __builtin_printf("break here");
19 return a * a;
20}
21
22void test_algorithms() {
23 std::vector<int> vec{8, 1, 3, 2};
24
25 // The internal frames for `std::sort` should be hidden
26 std::sort(first: vec.begin(), last: vec.end(), comp: sort_less);
27
28 // The internal frames for `ranges::sort` should be hidden
29 std::ranges::sort(vec.begin(), vec.end(), ranges_sort_less);
30
31 // Same for views
32 for (auto x : vec | std::ranges::views::transform(view_transform)) {
33 // no-op
34 }
35}
36
37void consume_number(int i) { __builtin_printf("break here"); }
38
39int invoke_add(int i, int j) {
40 __builtin_printf("break here");
41 return i + j;
42}
43
44struct Callable {
45 Callable(int num) : num_(num) {}
46 void operator()(int i) const { __builtin_printf("break here"); }
47 void member_function(int i) const { __builtin_printf("break here"); }
48 int num_;
49};
50
51void test_invoke() {
52 // Invoke a void-returning function
53 std::invoke(fn&: consume_number, args: -9);
54
55 // Invoke a non-void-returning function
56 std::invoke(fn&: invoke_add, args: 1, args: 10);
57
58 // Invoke a member function
59 const Callable foo(314159);
60 std::invoke(fn: &Callable::member_function, args: foo, args: 1);
61
62 // Invoke a function object
63 std::invoke(fn: Callable(12), args: 18);
64}
65
66struct MyKey {
67 int x;
68 bool operator==(const MyKey &) const = default;
69 bool operator<(const MyKey &other) const {
70 __builtin_printf("break here");
71 return x < other.x;
72 }
73};
74
75void test_containers() {
76 std::map<MyKey, int> map;
77 map.emplace(args: MyKey{.x: 1}, args: 2);
78 map.emplace(args: MyKey{.x: 2}, args: 3);
79}
80
81int main() {
82 test_algorithms();
83 test_invoke();
84 test_containers();
85 return 0;
86}
87

source code of lldb/test/API/lang/cpp/libcxx-internals-recognizer/main.cpp