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// RUN: %clang_cc1 -fsyntax-only -std=c++11 %s -verify
struct A {
int &f(int*);
float &f(int*) const noexcept;
int *ptr;
auto g1() noexcept(noexcept(f(ptr))) -> decltype(f(this->ptr));
auto g2() const noexcept(noexcept(f((*this).ptr))) -> decltype(f(ptr));
};
void testA(A &a) {
int &ir = a.g1();
float &fr = a.g2();
static_assert(!noexcept(a.g1()), "exception-specification failure");
static_assert(noexcept(a.g2()), "exception-specification failure");
}
struct B {
char g();
template<class T> auto f(T t) -> decltype(t + g())
{ return t + g(); }
};
template auto B::f(int t) -> decltype(t + g());
template<typename T>
struct C {
int &f(T*);
float &f(T*) const noexcept;
T* ptr;
auto g1() noexcept(noexcept(f(ptr))) -> decltype(f(ptr));
auto g2() const noexcept(noexcept(f(((this))->ptr))) -> decltype(f(ptr));
auto g3() noexcept(noexcept(f(this->ptr))) -> decltype(f((*this).ptr));
auto g4() const noexcept(noexcept(f(((this))->ptr))) -> decltype(f(this->ptr));
auto g5() noexcept(noexcept(this->f(ptr))) -> decltype(this->f(ptr));
auto g6() const noexcept(noexcept(this->f(((this))->ptr))) -> decltype(this->f(ptr));
auto g7() noexcept(noexcept(this->f(this->ptr))) -> decltype(this->f((*this).ptr));
auto g8() const noexcept(noexcept(this->f(((this))->ptr))) -> decltype(this->f(this->ptr));
};
void test_C(C<int> ci) {
int &ir = ci.g1();
float &fr = ci.g2();
int &ir2 = ci.g3();
float &fr2 = ci.g4();
int &ir3 = ci.g5();
float &fr3 = ci.g6();
int &ir4 = ci.g7();
float &fr4 = ci.g8();
static_assert(!noexcept(ci.g1()), "exception-specification failure");
static_assert(noexcept(ci.g2()), "exception-specification failure");
static_assert(!noexcept(ci.g3()), "exception-specification failure");
static_assert(noexcept(ci.g4()), "exception-specification failure");
static_assert(!noexcept(ci.g5()), "exception-specification failure");
static_assert(noexcept(ci.g6()), "exception-specification failure");
static_assert(!noexcept(ci.g7()), "exception-specification failure");
static_assert(noexcept(ci.g8()), "exception-specification failure");
}
namespace PR14263 {
template<typename T> struct X {
void f();
T f() const;
auto g() -> decltype(this->f()) { return f(); }
auto g() const -> decltype(this->f()) { return f(); }
};
template struct X<int>;
}
namespace PR10036 {
template <class I>
void
iter_swap(I x, I y) noexcept;
template <class T>
class A
{
T t_;
public:
void swap(A& a) noexcept(noexcept(iter_swap(&t_, &a.t_)));
};
void test() {
A<int> i, j;
i.swap(j);
}
}
namespace PR15290 {
template<typename T>
class A {
T v_;
friend int add_to_v(A &t) noexcept(noexcept(v_ + 42))
{
return t.v_ + 42;
}
};
void f()
{
A<int> t;
add_to_v(t);
}
}
namespace Static {
struct X1 {
int m;
// FIXME: This should be accepted.
static auto f() -> decltype(m); // expected-error{{'this' cannot be implicitly used in a static member function declaration}}
static auto g() -> decltype(this->m); // expected-error{{'this' cannot be used in a static member function declaration}}
static int h();
static int i() noexcept(noexcept(m + 2)); // expected-error{{'this' cannot be implicitly used in a static member function declaration}}
};
auto X1::h() -> decltype(m) { return 0; } // expected-error{{'this' cannot be implicitly used in a static member function declaration}}
template<typename T>
struct X2 {
int m;
T f(T*);
static T f(int);
auto g(T x) -> decltype(f(x)) { return 0; }
};
void test_X2() {
X2<int>().g(0);
}
}
namespace PR12564 {
struct Base {
void bar(Base&) {}
};
struct Derived : Base {
void foo(Derived& d) noexcept(noexcept(d.bar(d))) {}
};
}
namespace rdar13473493 {
template <typename F>
class wrap
{
public:
template <typename... Args>
auto operator()(Args&&... args) const -> decltype(wrapped(args...)) // expected-note{{candidate template ignored: substitution failure [with Args = <int>]: use of undeclared identifier 'wrapped'}}
{
return wrapped(args...);
}
private:
F wrapped;
};
void test(wrap<int (*)(int)> w) {
w(5); // expected-error{{no matching function for call to object of type 'wrap<int (*)(int)>'}}
}
}
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