1 // RUN: %clang_cc1 -std=c++1z -verify %s -fcxx-exceptions -triple=x86_64-linux-gnu 2 3 namespace BaseClassAggregateInit { 4 struct A { 5 int a, b, c; ABaseClassAggregateInit::A6 constexpr A(int n) : a(n), b(3 * n), c(b - 1) {} // expected-note {{outside the range of representable}} ABaseClassAggregateInit::A7 constexpr A() : A(10) {}; 8 }; 9 struct B : A {}; 10 struct C { int q; }; 11 struct D : B, C { int k; }; 12 13 constexpr D d1 = { 1, 2, 3 }; 14 static_assert(d1.a == 1 && d1.b == 3 && d1.c == 2 && d1.q == 2 && d1.k == 3); 15 16 constexpr D d2 = { 14 }; 17 static_assert(d2.a == 14 && d2.b == 42 && d2.c == 41 && d2.q == 0 && d2.k == 0); 18 19 constexpr D d3 = { A(5), C{2}, 1 }; 20 static_assert(d3.a == 5 && d3.b == 15 && d3.c == 14 && d3.q == 2 && d3.k == 1); 21 22 constexpr D d4 = {}; 23 static_assert(d4.a == 10 && d4.b == 30 && d4.c == 29 && d4.q == 0 && d4.k == 0); 24 25 constexpr D d5 = { __INT_MAX__ }; // expected-error {{must be initialized by a constant expression}} 26 // expected-note-re@-1 {{in call to 'A({{.*}})'}} 27 } 28 29 namespace NoexceptFunctionTypes { f()30 template<typename T> constexpr bool f() noexcept(true) { return true; } 31 constexpr bool (*fp)() = f<int>; 32 static_assert(f<int>()); 33 static_assert(fp()); 34 35 template<typename T> struct A { fNoexceptFunctionTypes::A36 constexpr bool f() noexcept(true) { return true; } gNoexceptFunctionTypes::A37 constexpr bool g() { return f(); } operator ()NoexceptFunctionTypes::A38 constexpr bool operator()() const noexcept(true) { return true; } 39 }; 40 static_assert(A<int>().f()); 41 static_assert(A<int>().g()); 42 static_assert(A<int>()()); 43 } 44 45 namespace Cxx17CD_NB_GB19 { 46 const int &r = 0; 47 constexpr int n = r; 48 } 49 50 namespace PR37585 { 51 template <class T> struct S { static constexpr bool value = true; }; f()52template <class T> constexpr bool f() { return true; } 53 template <class T> constexpr bool v = true; 54 test()55void test() { 56 if constexpr (true) {} 57 else if constexpr (f<int>()) {} 58 else if constexpr (S<int>::value) {} 59 else if constexpr (v<int>) {} 60 } 61 } 62