1 // { dg-do "run" } 2 #include <cassert> 3 4 struct A 5 { 6 double a; 7 double b; 8 }; 9 10 struct B 11 { 12 A a; 13 }; 14 15 struct C 16 : public A { }; 17 18 struct D 19 { DD20 D() throw() { } 21 }; 22 23 struct E 24 { EE25 E() throw(int) { } 26 }; 27 28 struct E1 29 { E1E130 E1() throw(int) { throw int(); } 31 }; 32 33 struct F 34 { FF35 F(const F&) throw() { } 36 }; 37 38 struct G 39 { GG40 G(const G&) throw(int) { throw int(); } 41 }; 42 43 template<typename T> 44 bool f()45 f() 46 { return __has_nothrow_constructor(T); } 47 48 template<typename T> 49 class My 50 { 51 public: 52 bool f()53 f() 54 { return !!__has_nothrow_constructor(T); } 55 }; 56 57 template<typename T> 58 class My2 59 { 60 public: 61 static const bool trait = __has_nothrow_constructor(T); 62 }; 63 64 template<typename T> 65 const bool My2<T>::trait; 66 67 68 template<typename T, bool b = __has_nothrow_constructor(T)> 69 struct My3_help 70 { static const bool trait = b; }; 71 72 template<typename T, bool b> 73 const bool My3_help<T, b>::trait; 74 75 template<typename T> 76 class My3 77 { 78 public: 79 bool f()80 f() 81 { return My3_help<T>::trait; } 82 }; 83 84 #define PTEST(T) (__has_nothrow_constructor(T) && f<T>() \ 85 && My<T>().f() && My2<T>::trait && My3<T>().f()) 86 87 #define NTEST(T) (!__has_nothrow_constructor(T) && !f<T>() \ 88 && !My<T>().f() && !My2<T>::trait && !My3<T>().f()) 89 main()90int main() 91 { 92 assert (PTEST (int)); 93 assert (NTEST (int (int))); 94 assert (NTEST (void)); 95 assert (PTEST (A)); 96 assert (PTEST (B)); 97 assert (PTEST (C)); 98 assert (PTEST (C[])); 99 assert (PTEST (D)); 100 assert (NTEST (E)); 101 assert (NTEST (E1)); 102 assert (NTEST (F)); 103 assert (NTEST (G)); 104 105 return 0; 106 } 107