llvm-project/clang/test/SemaCXX/cxx1z-lambda-star-this.cpp

73 lines
2.1 KiB
C++

// 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
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
} //end ns test_star_this