1 // RUN: %clang_cc1 -std=c++2a %s -include %s -verify 2 3 #ifndef INCLUDED 4 #define INCLUDED 5 6 #pragma clang system_header 7 namespace std { 8 namespace chrono { 9 struct day{}; 10 struct year{}; 11 } 12 constexpr chrono::day operator"" d(unsigned long long d) noexcept; 13 constexpr chrono::year operator"" y(unsigned long long y) noexcept; 14 } 15 16 #else 17 18 using namespace std; 19 chrono::day dec_d = 5d; 20 chrono::day oct_d = 05d; 21 chrono::day bin_d = 0b011d; 22 // expected-error@+3{{no viable conversion from 'int' to 'chrono::day'}} 23 // expected-note@9{{candidate constructor (the implicit copy constructor)}} 24 // expected-note@9{{candidate constructor (the implicit move constructor)}} 25 chrono::day hex_d = 0x44d; 26 chrono::year y = 10y; 27 28 namespace ignore_class_udl_for_numeric_literals { Aignore_class_udl_for_numeric_literals::A29 struct A { constexpr A(const char*) {} }; 30 struct B { constexpr B(char); }; 31 struct C { constexpr C(int); }; 32 template<A> void operator""_a(); 33 template<B> void operator""_b(); 34 template<C> void operator""_c(); test_class_udl_1()35 void test_class_udl_1() { 36 1_a; // expected-error {{no matching}} 37 1_b; // expected-error {{no matching}} 38 1_c; // expected-error {{no matching}} 39 "1"_a; 40 "1"_b; // expected-error {{no matching}} 41 "1"_c; // expected-error {{no matching}} 42 } 43 template<char...> void operator""_a(); 44 template<char...> void operator""_b(); 45 template<char...> void operator""_c(); test_class_udl_2()46 void test_class_udl_2() { 47 1_a; 48 // FIXME: The standard appears to say these two are ambiguous! 49 1_b; 50 1_c; 51 "1"_a; 52 "1"_b; // expected-error {{no matching}} 53 "1"_c; // expected-error {{no matching}} 54 } 55 } 56 #endif 57