1 // RUN: %check_clang_tidy -std=c++20 %s modernize-use-nullptr %t
2 
3 namespace std {
4 struct strong_ordering {
5   int n;
operator intstd::strong_ordering6   constexpr operator int() const { return n; }
7   static const strong_ordering equal, greater, less;
8 };
9 constexpr strong_ordering strong_ordering::equal = {0};
10 constexpr strong_ordering strong_ordering::greater = {1};
11 constexpr strong_ordering strong_ordering::less = {-1};
12 } // namespace std
13 
14 class A {
15 public:
16   auto operator<=>(const A &other) const = default;
17 };
18 
test_cxx_rewritten_binary_ops()19 void test_cxx_rewritten_binary_ops() {
20   A a1, a2;
21   bool result;
22   // should not change next line to (a1 nullptr a2)
23   result = (a1 < a2);
24   // CHECK-FIXES: result = (a1 < a2);
25   // should not change next line to (a1 nullptr a2)
26   result = (a1 >= a2);
27   // CHECK-FIXES: result = (a1 >= a2);
28   int *ptr = 0;
29   // CHECK-FIXES: int *ptr = nullptr;
30   result = (a1 > (ptr == 0 ? a1 : a2));
31   // CHECK-FIXES: result = (a1 > (ptr == nullptr ? a1 : a2));
32   result = (a1 > ((a1 > (ptr == 0 ? a1 : a2)) ? a1 : a2));
33   // CHECK-FIXES: result = (a1 > ((a1 > (ptr == nullptr ? a1 : a2)) ? a1 : a2));
34 }
35