1 // RUN: %clang_cc1 -fcxx-exceptions -fexceptions -fsyntax-only -verify -std=c++11 -ffreestanding %s
4 typedef decltype(nullptr) nullptr_t;
10 void o2(char*); // expected-note {{candidate}}
11 void o2(int A::*); // expected-note {{candidate}}
13 nullptr_t f(nullptr_t null)
15 // Implicit conversions.
24 void (*pf)() = nullptr;
26 void (A::*pmf)() = nullptr;
30 // Can't convert nullptr to integral implicitly.
31 uintptr_t i = nullptr; // expected-error {{cannot initialize}}
34 (void)(null == nullptr);
35 (void)(null <= nullptr);
36 (void)(null == (void*)0);
37 (void)((void*)0 == nullptr);
38 (void)(null <= (void*)0);
39 (void)((void*)0 <= nullptr);
44 (void)(1 > nullptr); // expected-error {{invalid operands to binary expression}}
45 (void)(1 != nullptr); // expected-error {{invalid operands to binary expression}}
46 (void)(1 + nullptr); // expected-error {{invalid operands to binary expression}}
47 (void)(0 ? nullptr : 0); // expected-error {{non-pointer operand type 'int' incompatible with nullptr}}
48 (void)(0 ? nullptr : (void*)0);
49 (void)(0 ? nullptr : A()); // expected-error {{non-pointer operand type 'A' incompatible with nullptr}}
50 (void)(0 ? A() : nullptr); // expected-error {{non-pointer operand type 'A' incompatible with nullptr}}
55 o2(nullptr); // expected-error {{ambiguous}}
57 // nullptr is an rvalue, null is an lvalue
58 (void)&nullptr; // expected-error {{address expression must be an lvalue}}
59 nullptr_t *pn = &null;
61 // You can reinterpret_cast nullptr to an integer.
62 (void)reinterpret_cast<uintptr_t>(nullptr);
63 (void)reinterpret_cast<uintptr_t>(*pn);
68 // You can throw nullptr.
72 // Template arguments can be nullptr.
73 template <int *PI, void (*PF)(), int A::*PM, void (A::*PMF)()>
76 typedef T<nullptr, nullptr, nullptr, nullptr> NT;
79 template<typename T, typename U> struct is_same {
80 static const bool value = false;
83 template<typename T> struct is_same<T, T> {
84 static const bool value = true;
90 // Test that we prefer g(void*) over g(bool).
91 static_assert(is_same<decltype(g(nullptr)), void*>::value, "");
95 void f(int, ...) __attribute__((sentinel));
98 // nullptr can be used as the sentinel value.
104 void f(const char*, ...) __attribute__((format(printf, 1, 2)));
107 // Don't warn when using nullptr with %p.
112 int array0[__is_scalar(nullptr_t)? 1 : -1];
113 int array1[__is_pod(nullptr_t)? 1 : -1];
114 int array2[sizeof(nullptr_t) == sizeof(void*)? 1 : -1];
116 // FIXME: when we implement constexpr, this will be testable.
118 int relational0[nullptr < nullptr? -1 : 1];
119 int relational1[nullptr > nullptr? -1 : 1];
120 int relational2[nullptr <= nullptr? 1 : -1];
121 int relational3[nullptr >= nullptr? 1 : -1];
122 int equality[nullptr == nullptr? 1 : -1];
123 int inequality[nullptr != nullptr? -1 : 1];
126 namespace overloading {
131 int &ir = (f1)(nullptr);
134 struct ConvertsToNullPtr {
135 operator nullptr_t() const;
138 void test_conversion(ConvertsToNullPtr ctn) {
148 namespace templates {
149 template<typename T, nullptr_t Value>
159 template<int (*fp)(int), int* p, int A::* pmd, int (A::*pmf)(int)>
162 X2<nullptr, nullptr, nullptr, nullptr> x2;