1 // RUN: %clang_cc1 -fsyntax-only -fcxx-exceptions -verify -std=c++11 -Wall %s 2 3 struct Bitfield { 4 int n : 3 = 7; // expected-error {{bitfield member cannot have an in-class initializer}} 5 }; 6 7 int a; 8 class NoWarning { 9 int &n = a; 10 public: 11 int &GetN() { return n; } 12 }; 13 14 bool b(); 15 int k; 16 struct Recurse { 17 int &n = // expected-error {{cannot use defaulted default constructor of 'Recurse' within the class outside of member functions because 'n' has an initializer}} 18 b() ? 19 Recurse().n : // expected-note {{implicit default constructor for 'Recurse' first required here}} 20 k; 21 }; 22 23 struct UnknownBound { 24 int as[] = { 1, 2, 3 }; // expected-error {{array bound cannot be deduced from an in-class initializer}} 25 int bs[4] = { 4, 5, 6, 7 }; 26 int cs[] = { 8, 9, 10 }; // expected-error {{array bound cannot be deduced from an in-class initializer}} 27 }; 28 29 template<int n> struct T { static const int B; }; 30 template<> struct T<2> { template<int C, int D> using B = int; }; 31 const int C = 0, D = 0; 32 struct S { 33 int as[] = { decltype(x)::B<C, D>(0) }; // expected-error {{array bound cannot be deduced from an in-class initializer}} 34 T<sizeof(as) / sizeof(int)> x; 35 // test that we handle invalid array bound deductions without crashing when the declarator name is itself invalid 36 operator int[](){}; // expected-error {{'operator int' cannot be the name of a variable or data member}} \ 37 // expected-error {{array bound cannot be deduced from an in-class initializer}} 38 }; 39 40 struct ThrowCtor { ThrowCtor(int) noexcept(false); }; 41 struct NoThrowCtor { NoThrowCtor(int) noexcept(true); }; 42 43 struct Throw { ThrowCtor tc = 42; }; 44 struct NoThrow { NoThrowCtor tc = 42; }; 45 46 static_assert(!noexcept(Throw()), "incorrect exception specification"); 47 static_assert(noexcept(NoThrow()), "incorrect exception specification"); 48 49 struct CheckExcSpec { 50 CheckExcSpec() noexcept(true) = default; 51 int n = 0; 52 }; 53 struct CheckExcSpecFail { 54 CheckExcSpecFail() noexcept(true) = default; // expected-error {{exception specification of explicitly defaulted default constructor does not match the calculated one}} 55 ThrowCtor tc = 123; 56 }; 57 58 struct TypedefInit { 59 typedef int A = 0; // expected-error {{illegal initializer}} 60 }; 61 62 // PR10578 / <rdar://problem/9877267> 63 namespace PR10578 { 64 template<typename T> 65 struct X { 66 X() { 67 T* x = 1; // expected-error{{cannot initialize a variable of type 'int *' with an rvalue of type 'int'}} 68 } 69 }; 70 71 struct Y : X<int> { 72 Y(); 73 }; 74 75 Y::Y() try { // expected-note{{in instantiation of member function 'PR10578::X<int>::X' requested here}} 76 } catch(...) { 77 } 78 } 79 80 namespace PR14838 { 81 struct base { ~base() {} }; 82 class function : base { 83 ~function() {} // expected-note {{implicitly declared private here}} 84 public: 85 function(...) {} 86 }; 87 struct thing {}; 88 struct another { 89 another() : r(thing()) {} 90 // expected-error@-1 {{temporary of type 'const PR14838::function' has private destructor}} 91 // expected-warning@-2 {{binding reference member 'r' to a temporary value}} 92 const function &r; // expected-note {{reference member declared here}} 93 } af; 94 } 95 96 namespace rdar14084171 { 97 struct Point { // expected-note 3 {{candidate constructor}} 98 double x; 99 double y; 100 }; 101 struct Sprite { 102 Point location = Point(0,0); // expected-error {{no matching constructor for initialization of 'rdar14084171::Point'}} 103 }; 104 void f(Sprite& x) { x = x; } 105 } 106 107 namespace PR18560 { 108 struct X { int m; }; 109 110 template<typename T = X, 111 typename U = decltype(T::m)> 112 int f(); 113 114 struct Y { int b = f(); }; 115 } 116 117 namespace template_valid { 118 // Valid, we shouldn't build a CXXDefaultInitExpr until A's ctor definition. 119 struct A { 120 A(); 121 template <typename T> 122 struct B { int m1 = sizeof(A) + sizeof(T); }; 123 B<int> m2; 124 }; 125 A::A() {} 126 } 127 128 namespace template_default_ctor { 129 struct A { 130 template <typename T> 131 struct B { 132 int m1 = 0; // expected-error {{cannot use defaulted default constructor of 'B' within 'A' outside of member functions because 'm1' has an initializer}} 133 }; 134 // expected-note@+1 {{implicit default constructor for 'template_default_ctor::A::B<int>' first required here}} 135 enum { NOE = noexcept(B<int>()) }; 136 }; 137 } 138 139 namespace default_ctor { 140 struct A { 141 struct B { 142 int m1 = 0; // expected-error {{cannot use defaulted default constructor of 'B' within 'A' outside of member functions because 'm1' has an initializer}} 143 }; 144 // expected-note@+1 {{implicit default constructor for 'default_ctor::A::B' first required here}} 145 enum { NOE = noexcept(B()) }; 146 }; 147 } 148 149 namespace member_template { 150 struct A { 151 template <typename T> 152 struct B { 153 struct C { 154 int m1 = 0; // expected-error {{cannot use defaulted default constructor of 'C' within 'A' outside of member functions because 'm1' has an initializer}} 155 }; 156 template <typename U> 157 struct D { 158 int m1 = 0; // expected-error {{cannot use defaulted default constructor of 'D' within 'A' outside of member functions because 'm1' has an initializer}} 159 }; 160 }; 161 enum { 162 // expected-note@+1 {{implicit default constructor for 'member_template::A::B<int>::C' first required here}} 163 NOE1 = noexcept(B<int>::C()), 164 // expected-note@+1 {{implicit default constructor for 'member_template::A::B<int>::D<int>' first required here}} 165 NOE2 = noexcept(B<int>::D<int>()) 166 }; 167 }; 168 } 169 170 namespace explicit_instantiation { 171 template<typename T> struct X { 172 X(); // expected-note {{in instantiation of default member initializer 'explicit_instantiation::X<float>::n' requested here}} 173 int n = T::error; // expected-error {{type 'float' cannot be used prior to '::' because it has no members}} 174 }; 175 template struct X<int>; // ok 176 template<typename T> X<T>::X() {} 177 template struct X<float>; // expected-note {{in instantiation of member function 'explicit_instantiation::X<float>::X' requested here}} 178 } 179 180 namespace local_class { 181 template<typename T> void f() { 182 struct X { // expected-note {{in instantiation of default member initializer 'local_class::f()::X::n' requested here}} 183 int n = T::error; // expected-error {{type 'int' cannot be used prior to '::' because it has no members}} 184 }; 185 } 186 void g() { f<int>(); } // expected-note {{in instantiation of function template specialization 'local_class::f<int>' requested here}} 187 } 188 189 namespace PR22056 { 190 template <int N> 191 struct S { 192 int x[3] = {[N] = 3}; 193 }; 194 } 195
