// RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks %s @interface A @end 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); } }