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// RUN: %clang_cc1 -std=c++1z -verify -fsyntax-only -fblocks -emit-llvm-only %s
// RUN: %clang_cc1 -std=c++1z -verify -fsyntax-only -fblocks -fdelayed-template-parsing %s -DDELAYED_TEMPLATE_PARSING
// RUN: %clang_cc1 -std=c++1z -verify -fsyntax-only -fblocks -fms-extensions %s -DMS_EXTENSIONS
// RUN: %clang_cc1 -std=c++1z -verify -fsyntax-only -fblocks -fdelayed-template-parsing -fms-extensions %s -DMS_EXTENSIONS -DDELAYED_TEMPLATE_PARSING
template<class, class> constexpr bool is_same = false;
template<class T> constexpr bool is_same<T, T> = true;
namespace test_star_this {
namespace ns1 {
class A {
int x = 345;
auto foo() {
(void) [*this, this] { }; //expected-error{{'this' can appear only once}}
(void) [this] { ++x; };
(void) [*this] { ++x; }; //expected-error{{read-only variable}}
(void) [*this] () mutable { ++x; };
(void) [=] { return x; };
(void) [&, this] { return x; };
(void) [=, *this] { return x; };
(void) [&, *this] { return x; };
}
};
} // end ns1
namespace ns2 {
class B {
B(const B&) = delete; //expected-note{{deleted here}}
int *x = (int *) 456;
void foo() {
(void)[this] { return x; };
(void)[*this] { return x; }; //expected-error{{call to deleted}}
}
};
} // end ns2
namespace ns3 {
class B {
B(const B&) = delete; //expected-note2{{deleted here}}
int *x = (int *) 456;
public:
template<class T = int>
void foo() {
(void)[this] { return x; };
(void)[*this] { return x; }; //expected-error2{{call to deleted}}
}
B() = default;
} b;
B *c = (b.foo(), nullptr); //expected-note{{in instantiation}}
} // end ns3
namespace ns4 {
template<class U>
class B {
B(const B&) = delete; //expected-note{{deleted here}}
double d = 3.14;
public:
template<class T = int>
auto foo() {
const auto &L = [*this] (auto a) mutable { //expected-error{{call to deleted}}
d += a;
return [this] (auto b) { return d +=b; };
};
}
B() = default;
};
void main() {
B<int*> b;
b.foo(); //expected-note{{in instantiation}}
} // end main
} // end ns4
namespace ns5 {
struct X {
double d = 3.14;
X(const volatile X&);
void foo() {
}
void foo() const { //expected-note{{const}}
auto L = [*this] () mutable {
static_assert(is_same<decltype(this), X*>);
++d;
auto M = [this] {
static_assert(is_same<decltype(this), X*>);
++d;
auto N = [] {
static_assert(is_same<decltype(this), X*>);
};
};
};
auto L1 = [*this] {
static_assert(is_same<decltype(this), const X*>);
auto M = [this] () mutable {
static_assert(is_same<decltype(this), const X*>);
auto N = [] {
static_assert(is_same<decltype(this), const X*>);
};
};
auto M2 = [*this] () mutable {
static_assert(is_same<decltype(this), X*>);
auto N = [] {
static_assert(is_same<decltype(this), X*>);
};
};
};
auto GL1 = [*this] (auto a) {
static_assert(is_same<decltype(this), const X*>);
auto M = [this] (auto b) mutable {
static_assert(is_same<decltype(this), const X*>);
auto N = [] (auto c) {
static_assert(is_same<decltype(this), const X*>);
};
return N;
};
auto M2 = [*this] (auto a) mutable {
static_assert(is_same<decltype(this), X*>);
auto N = [] (auto b) {
static_assert(is_same<decltype(this), X*>);
};
return N;
};
return [=](auto a) mutable { M(a)(a); M2(a)(a); };
};
GL1("abc")("abc");
auto L2 = [this] () mutable {
static_assert(is_same<decltype(this), const X*>);
++d; //expected-error{{cannot assign}}
};
auto GL = [*this] (auto a) mutable {
static_assert(is_same<decltype(this), X*>);
++d;
auto M = [this] (auto b) {
static_assert(is_same<decltype(this), X*>);
++d;
auto N = [] (auto c) {
static_assert(is_same<decltype(this), X*>);
};
N(3.14);
};
M("abc");
};
GL(3.14);
}
void foo() volatile const {
auto L = [this] () {
static_assert(is_same<decltype(this), const volatile X*>);
auto M = [*this] () mutable {
static_assert(is_same<decltype(this), X*>);
auto N = [this] {
static_assert(is_same<decltype(this), X*>);
auto M = [] {
static_assert(is_same<decltype(this), X*>);
};
};
auto N2 = [*this] {
static_assert(is_same<decltype(this), const X*>);
};
};
auto M2 = [*this] () {
static_assert(is_same<decltype(this), const X*>);
auto N = [this] {
static_assert(is_same<decltype(this), const X*>);
};
};
};
}
};
} //end ns5
namespace ns6 {
struct X {
double d;
auto foo() const {
auto L = [*this] () mutable {
auto M = [=] (auto a) {
auto N = [this] {
++d;
static_assert(is_same<decltype(this), X*>);
auto O = [*this] {
static_assert(is_same<decltype(this), const X*>);
};
};
N();
static_assert(is_same<decltype(this), X*>);
};
return M;
};
return L;
}
};
int main() {
auto L = X{}.foo();
auto M = L();
M(3.14);
}
} // end ns6
namespace ns7 {
struct X {
double d;
X();
X(const X&);
X(X&) = delete;
auto foo() const {
//OK - the object used to initialize our capture is a const object and so prefers the non-deleted ctor.
const auto &&L = [*this] { };
}
};
int main() {
X x;
x.foo();
}
} // end ns7
} //end ns test_star_this
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