1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s 2 3 struct NonLit { // expected-note 3{{no constexpr constructors}} 4 NonLit(); 5 }; 6 7 struct S { 8 static constexpr int a = 0; 9 static constexpr int b; // expected-error {{declaration of constexpr static data member 'b' requires an initializer}} 10 11 static constexpr int c = 0; 12 static const int d; 13 static const int d2 = 0; 14 15 static constexpr double e = 0.0; // ok 16 static const double f = 0.0; // expected-error {{requires 'constexpr' specifier}} expected-note {{add 'constexpr'}} 17 static char *const g = 0; // expected-error {{requires 'constexpr' specifier}} 18 static const NonLit h = NonLit(); // expected-error {{must be initialized out of line}} 19 }; 20 21 constexpr int S::a; 22 constexpr int S::b = 0; 23 24 const int S::c; 25 constexpr int S::d = 0; 26 constexpr int S::d2; 27 28 template<typename T> 29 struct U { 30 static constexpr int a = 0; 31 static constexpr int b; // expected-error {{declaration of constexpr static data member 'b' requires an initializer}} 32 static constexpr NonLit h = NonLit(); // expected-error {{cannot have non-literal type 'const NonLit'}} 33 static constexpr T c = T(); // expected-error {{cannot have non-literal type}} 34 static const T d; 35 }; 36 37 template<typename T> constexpr T U<T>::d = T(); // expected-error {{non-literal type 'const NonLit'}} 38 39 U<int> u1; 40 U<NonLit> u2; // expected-note {{here}} 41 42 static_assert(U<int>::a == 0, ""); 43 44 constexpr int outofline = (U<NonLit>::d, 0); // expected-note {{here}} expected-warning {{unused}} 45
