// RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks %s
@interface A
@end
@class NSString;
template<typename T, typename U>
struct is_same {
static const bool value = false;
};
template<typename T>
struct is_same<T, T> {
static const bool value = true;
};
// Instantiation for reference/pointer types that will get lifetime
// adjustments.
template<typename T>
struct X0 {
typedef T* pointer; // okay: ends up being strong.
typedef T& reference; // okay: ends up being strong
};
void test_X0() {
X0<id> x0id;
X0<A*> x0a;
X0<__strong A*> x0sa;
id __strong *ptr;
id __strong val;
X0<__strong id>::pointer &ptr_ref = ptr;
X0<__strong id>::reference ref = val;
}
int check_infer_strong[is_same<id, __strong id>::value? 1 : -1];
// Check template argument deduction (e.g., for specialization) using
// lifetime qualifiers.
template<typename T>
struct is_pointer_strong {
static const bool value = false;
};
template<typename T>
struct is_pointer_strong<__strong T*> {
static const bool value = true;
};
int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1];
int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1];
int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1];
int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1];
int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1];
// Check substitution into lifetime-qualified dependent types.
template<typename T>
struct make_strong_pointer {
typedef __strong T *type;
};
template<typename T>
struct make_strong_pointer<__weak T> {
typedef __strong T *type;
};
template<typename T>
struct make_strong_pointer<__autoreleasing T> {
typedef __strong T *type;
};
template<typename T>
struct make_strong_pointer<__unsafe_unretained T> {
typedef __strong T *type;
};
// Adding qualifiers
int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1];
int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1];
// Adding redundant qualifiers
int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1];
int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1];
// Adding nonsensical qualifiers.
int check_make_strong5[is_same<make_strong_pointer<int>::type, int *>::value ? 1 : -1];
int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1];
template<typename T>
struct make_weak {
typedef __weak T type;
};
int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1];
int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1];
int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1];
template<typename T>
struct make_weak_fail {
typedef T T_type;
typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') is already explicitly ownership-qualified}} \
// expected-error{{the type 'T_type' (aka '__strong id') is already explicitly ownership-qualified}}
};
int check_make_weak_fail0[is_same<make_weak_fail<__weak id>::type, __weak id>::value? 1 : -1]; // expected-note{{in instantiation of template class 'make_weak_fail<__weak id>' requested here}}
int check_make_weak_fail1[is_same<make_weak_fail<id>::type, __weak id>::value? -1 : 1]; // expected-note{{in instantiation of template class 'make_weak_fail<id>' requested here}}
// Check template argument deduction from function templates.
template<typename T> struct identity { };
template<typename T> identity<T> accept_strong_ptr(__strong T*);
template<typename T> identity<T> accept_strong_ref(__strong T&);
template<typename T> identity<T> accept_any_ptr(T*);
template<typename T> identity<T> accept_any_ref(T&);
void test_func_deduction_id() {
__strong id *sip;
__weak id *wip;
__autoreleasing id *aip;
__unsafe_unretained id *uip;
identity<id> res1 = accept_strong_ptr(sip);
identity<__strong id> res2 = accept_any_ptr(sip);
__strong id si;
__weak id wi;
__autoreleasing id ai;
__unsafe_unretained id ui;
identity<id> res3 = accept_strong_ref(si);
identity<__strong id> res4 = accept_any_ref(si);
identity<__weak id> res5 = accept_any_ref(wi);
identity<__autoreleasing id> res6 = accept_any_ref(ai);
identity<__unsafe_unretained id> res7 = accept_any_ref(ui);
}
void test_func_deduction_A() {
__strong A * *sip;
__weak A * *wip;
__autoreleasing A * *aip;
__unsafe_unretained A * *uip;
identity<A *> res1 = accept_strong_ptr(sip);
identity<__strong A *> res2 = accept_any_ptr(sip);
__strong A * si;
__weak A * wi;
__autoreleasing A * ai;
__unsafe_unretained A * ui;
identity<A *> res3 = accept_strong_ref(si);
identity<__strong A *> res4 = accept_any_ref(si);
identity<__weak A *> res5 = accept_any_ref(wi);
identity<__autoreleasing A *> res6 = accept_any_ref(ai);
identity<__unsafe_unretained A *> res7 = accept_any_ref(ui);
}
// Test partial ordering (qualified vs. non-qualified).
template<typename T>
struct classify_pointer_pointer {
static const unsigned value = 0;
};
template<typename T>
struct classify_pointer_pointer<T*> {
static const unsigned value = 1;
};
template<typename T>
struct classify_pointer_pointer<__strong T*> {
static const unsigned value = 2;
};
template<typename T>
struct classify_pointer_pointer<__weak T*> {
static const unsigned value = 3;
};
template<typename T>
struct classify_pointer_pointer<T&> {
static const unsigned value = 4;
};
template<typename T>
struct classify_pointer_pointer<__strong T&> {
static const unsigned value = 5;
};
template<typename T>
struct classify_pointer_pointer<__weak T&> {
static const unsigned value = 6;
};
int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1];
int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1];
int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1];
int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1];
int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1];
int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1];
int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1];
int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1];
int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1];
int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1];
int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1];
int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1];
int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1];
int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1];
int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1];
int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1];
int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1];
int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1];
int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1];
int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1];
int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1];
template<typename T> int& qual_vs_unqual_ptr(__strong T*);
template<typename T> double& qual_vs_unqual_ptr(__weak T*);
template<typename T> float& qual_vs_unqual_ptr(T*);
template<typename T> int& qual_vs_unqual_ref(__strong T&);
template<typename T> double& qual_vs_unqual_ref(__weak T&);
template<typename T> float& qual_vs_unqual_ref(T&);
void test_qual_vs_unqual_id() {
__strong id *sip;
__weak id *wip;
__autoreleasing id *aip;
__unsafe_unretained id *uip;
int &ir1 = qual_vs_unqual_ptr(sip);
double &dr1 = qual_vs_unqual_ptr(wip);
float &fr1 = qual_vs_unqual_ptr(aip);
float &fr2 = qual_vs_unqual_ptr(uip);
int &ir2 = qual_vs_unqual_ref(*sip);
double &dr2 = qual_vs_unqual_ref(*wip);
float &fr3 = qual_vs_unqual_ref(*aip);
float &fr4 = qual_vs_unqual_ref(*uip);
}
void test_qual_vs_unqual_a() {
__strong A * *sap;
__weak A * *wap;
__autoreleasing A * *aap;
__unsafe_unretained A * *uap;
int &ir1 = qual_vs_unqual_ptr(sap);
double &dr1 = qual_vs_unqual_ptr(wap);
float &fr1 = qual_vs_unqual_ptr(aap);
float &fr2 = qual_vs_unqual_ptr(uap);
int &ir2 = qual_vs_unqual_ref(*sap);
double &dr2 = qual_vs_unqual_ref(*wap);
float &fr3 = qual_vs_unqual_ref(*aap);
float &fr4 = qual_vs_unqual_ref(*uap);
}
namespace rdar9828157 {
// Template argument deduction involving lifetime qualifiers and
// non-lifetime types.
class A { };
template<typename T> float& f(T&);
template<typename T> int& f(__strong T&);
template<typename T> double& f(__weak T&);
void test_f(A* ap) {
float &fr = (f)(ap);
}
}
namespace rdar10862386 {
// More deduction with lifetime qualifiers.
template <typename T>
int testing(const T &) {
return 1;
}
void test() {
testing(1);
testing("hi");
testing<NSString *>(@"hi");
testing(@"hi");
}
}