1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246
|
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++17 %s
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++2a %s
// Verify that using an initializer list for a non-aggregate looks for
// constructors..
struct NonAggr1 { // expected-note 2 {{candidate constructor}}
NonAggr1(int, int) { } // expected-note {{candidate constructor}}
int m;
};
struct Base { };
struct NonAggr2 : public Base { // expected-note 0-3 {{candidate constructor}}
int m;
};
class NonAggr3 { // expected-note 3 {{candidate constructor}}
int m;
};
struct NonAggr4 { // expected-note 3 {{candidate constructor}}
int m;
virtual void f();
};
NonAggr1 na1 = { 17 }; // expected-error{{no matching constructor for initialization of 'NonAggr1'}}
NonAggr2 na2 = { 17 };
NonAggr3 na3 = { 17 }; // expected-error{{no matching constructor for initialization of 'NonAggr3'}}
NonAggr4 na4 = { 17 }; // expected-error{{no matching constructor for initialization of 'NonAggr4'}}
#if __cplusplus <= 201402L
// expected-error@-4{{no matching constructor for initialization of 'NonAggr2'}}
#else
// expected-error@-6{{requires explicit braces}}
NonAggr2 na2b = { {}, 17 }; // ok
#endif
// PR5817
typedef int type[][2];
const type foo = {0};
// Vector initialization.
typedef short __v4hi __attribute__ ((__vector_size__ (8)));
__v4hi v1 = { (void *)1, 2, 3 }; // expected-error {{cannot initialize a vector element of type 'short' with an rvalue of type 'void *'}}
// Array initialization.
int a[] = { (void *)1 }; // expected-error {{cannot initialize an array element of type 'int' with an rvalue of type 'void *'}}
// Struct initialization.
struct S { int a; } s = { (void *)1 }; // expected-error {{cannot initialize a member subobject of type 'int' with an rvalue of type 'void *'}}
// Check that we're copy-initializing the structs.
struct A {
A();
A(int);
~A();
A(const A&) = delete; // expected-note 0-2{{'A' has been explicitly marked deleted here}}
};
struct B {
A a;
};
struct C {
const A& a;
};
void f() {
A as1[1] = { };
A as2[1] = { 1 };
#if __cplusplus <= 201402L
// expected-error@-2 {{copying array element of type 'A' invokes deleted constructor}}
#endif
B b1 = { };
B b2 = { 1 };
#if __cplusplus <= 201402L
// expected-error@-2 {{copying member subobject of type 'A' invokes deleted constructor}}
#endif
C c1 = { 1 };
}
class Agg {
public:
int i, j;
};
class AggAgg {
public:
Agg agg1;
Agg agg2;
};
AggAgg aggagg = { 1, 2, 3, 4 };
namespace diff_cpp14_dcl_init_aggr_example {
struct derived;
struct base {
friend struct derived;
private:
base();
};
struct derived : base {};
derived d1{};
#if __cplusplus > 201402L
// expected-error@-2 {{private}}
// expected-note@-7 {{here}}
#endif
derived d2;
}
namespace ProtectedBaseCtor {
// FIXME: It's unclear whether f() and g() should be valid in C++1z. What is
// the object expression in a constructor call -- the base class subobject or
// the complete object?
struct A {
protected:
A();
};
struct B : public A {
friend B f();
friend B g();
friend B h();
};
B f() { return {}; }
#if __cplusplus > 201402L
// expected-error@-2 {{protected default constructor}}
// expected-note@-12 {{here}}
#endif
B g() { return {{}}; }
#if __cplusplus <= 201402L
// expected-error@-2 {{no matching constructor}}
// expected-note@-15 3{{candidate}}
#else
// expected-error@-5 {{protected default constructor}}
// expected-note@-21 {{here}}
#endif
B h() { return {A{}}; }
#if __cplusplus <= 201402L
// expected-error@-2 {{no matching constructor}}
// expected-note@-24 3{{candidate}}
#endif
// expected-error@-5 {{protected constructor}}
// expected-note@-30 {{here}}
}
namespace IdiomaticStdArrayInitDoesNotWarn {
#pragma clang diagnostic push
#pragma clang diagnostic warning "-Wmissing-braces"
template<typename T, int N> struct StdArray {
T contents[N];
};
StdArray<int, 3> x = {1, 2, 3};
template<typename T, int N> struct ArrayAndSomethingElse {
T contents[N];
int something_else;
};
ArrayAndSomethingElse<int, 3> y = {1, 2, 3}; // expected-warning {{suggest braces}}
#if __cplusplus >= 201703L
template<typename T, int N> struct ArrayAndBaseClass : StdArray<int, 3> {
T contents[N];
};
ArrayAndBaseClass<int, 3> z = {1, 2, 3}; // expected-warning {{suggest braces}}
// This pattern is used for tagged aggregates and must not warn
template<typename T, int N> struct JustABaseClass : StdArray<T, N> {};
JustABaseClass<int, 3> w = {1, 2, 3};
// but this should be also ok
JustABaseClass<int, 3> v = {{1, 2, 3}};
template <typename T, int N> struct OnionBaseClass : JustABaseClass<T, N> {};
OnionBaseClass<int, 3> u = {1, 2, 3};
OnionBaseClass<int, 3> t = {{{1, 2, 3}}};
struct EmptyBase {};
template <typename T, int N> struct AggregateAndEmpty : StdArray<T, N>, EmptyBase {};
AggregateAndEmpty<int, 3> p = {1, 2, 3}; // expected-warning {{suggest braces}}
#endif
#pragma clang diagnostic pop
}
namespace HugeArraysUseArrayFiller {
// All we're checking here is that initialization completes in a reasonable
// amount of time.
struct A { int n; int arr[1000 * 1000 * 1000]; } a = {1, {2}};
}
namespace ElementDestructor {
// The destructor for each element of class type is potentially invoked
// (15.4 [class.dtor]) from the context where the aggregate initialization
// occurs. Produce a diagnostic if an element's destructor isn't accessible.
class X { int f; ~X(); }; // expected-note {{implicitly declared private here}}
struct Y { X x; };
void test0() {
auto *y = new Y {}; // expected-error {{temporary of type 'ElementDestructor::X' has private destructor}}
}
struct S0 { int f; ~S0() = delete; }; // expected-note 3 {{'~S0' has been explicitly marked deleted here}}
struct S1 { S0 s0; int f; };
S1 test1() {
auto *t = new S1 { .f = 1 }; // expected-error {{attempt to use a deleted function}}
return {2}; // expected-error {{attempt to use a deleted function}}
}
// Check if the type of an array element has a destructor.
struct S2 { S0 a[4]; };
void test2() {
auto *t = new S2 {1,2,3,4}; // expected-error {{attempt to use a deleted function}}
}
#if __cplusplus >= 201703L
namespace BaseDestructor {
struct S0 { int f; ~S0() = delete; }; // expected-note {{'~S0' has been explicitly marked deleted here}}
// Check destructor of base class.
struct S3 : S0 {};
void test3() {
S3 s3 = {1}; // expected-error {{attempt to use a deleted function}}
}
}
#endif
// A's destructor doesn't have to be accessible from the context of C's
// initialization.
struct A { friend struct B; private: ~A(); };
struct B { B(); A a; };
struct C { B b; };
C c = { B() };
}
|