304 lines
9.5 KiB
Text
304 lines
9.5 KiB
Text
// RUN: %clang_cc1 -fobjc-runtime-has-weak -fsyntax-only -fobjc-arc -verify -fblocks %s
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@interface A
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@end
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@class NSString;
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template<typename T, typename U>
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struct is_same {
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static const bool value = false;
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};
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template<typename T>
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struct is_same<T, T> {
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static const bool value = true;
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};
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// Instantiation for reference/pointer types that will get lifetime
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// adjustments.
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template<typename T>
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struct X0 {
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typedef T* pointer; // okay: ends up being strong.
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typedef T& reference; // okay: ends up being strong
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};
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void test_X0() {
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X0<id> x0id;
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X0<A*> x0a;
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X0<__strong A*> x0sa;
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id __strong *ptr;
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id __strong val;
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X0<__strong id>::pointer &ptr_ref = ptr;
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X0<__strong id>::reference ref = val;
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}
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int check_infer_strong[is_same<id, __strong id>::value? 1 : -1];
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// Check template argument deduction (e.g., for specialization) using
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// lifetime qualifiers.
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template<typename T>
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struct is_pointer_strong {
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static const bool value = false;
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};
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template<typename T>
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struct is_pointer_strong<__strong T*> {
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static const bool value = true;
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};
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int check_ptr_strong1[is_pointer_strong<__strong id*>::value? 1 : -1];
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int check_ptr_strong2[is_pointer_strong<__weak id*>::value? -1 : 1];
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int check_ptr_strong3[is_pointer_strong<__autoreleasing id*>::value? -1 : 1];
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int check_ptr_strong4[is_pointer_strong<__unsafe_unretained id*>::value? -1 : 1];
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int check_ptr_strong5[is_pointer_strong<id>::value? -1 : 1];
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// Check substitution into lifetime-qualified dependent types.
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template<typename T>
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struct make_strong_pointer {
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typedef __strong T *type;
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};
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template<typename T>
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struct make_strong_pointer<__weak T> {
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typedef __strong T *type;
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};
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template<typename T>
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struct make_strong_pointer<__autoreleasing T> {
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typedef __strong T *type;
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};
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template<typename T>
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struct make_strong_pointer<__unsafe_unretained T> {
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typedef __strong T *type;
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};
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// Adding qualifiers
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int check_make_strong1[is_same<make_strong_pointer<id>::type, __strong id *>::value ? 1 : -1];
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int check_make_strong2[is_same<make_strong_pointer<A*>::type, A* __strong *>::value ? 1 : -1];
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// Adding redundant qualifiers
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int check_make_strong3[is_same<make_strong_pointer<__strong id>::type, __strong id *>::value ? 1 : -1];
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int check_make_strong4[is_same<make_strong_pointer<__strong A*>::type, A* __strong *>::value ? 1 : -1];
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// Adding nonsensical qualifiers.
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int check_make_strong5[is_same<make_strong_pointer<int>::type, int *>::value ? 1 : -1];
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int check_make_strong6[is_same<make_strong_pointer<__weak id>::type, __strong id *>::value ? 1 : -1];
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template<typename T>
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struct make_weak {
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typedef __weak T type;
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};
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int check_make_weak0[is_same<make_weak<id>::type, __weak id>::value? 1 : -1];
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int check_make_weak1[is_same<make_weak<__strong id>::type, __weak id>::value? 1 : -1];
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int check_make_weak2[is_same<make_weak<__autoreleasing id>::type, __weak id>::value? 1 : -1];
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template<typename T>
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struct make_weak_fail {
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typedef T T_type;
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typedef __weak T_type type; // expected-error{{the type 'T_type' (aka '__weak id') is already explicitly ownership-qualified}} \
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// expected-error{{the type 'T_type' (aka '__strong id') is already explicitly ownership-qualified}}
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};
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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}}
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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}}
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// Check template argument deduction from function templates.
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template<typename T> struct identity { };
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template<typename T> identity<T> accept_strong_ptr(__strong T*);
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template<typename T> identity<T> accept_strong_ref(__strong T&);
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template<typename T> identity<T> accept_any_ptr(T*);
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template<typename T> identity<T> accept_any_ref(T&);
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void test_func_deduction_id() {
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__strong id *sip;
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__weak id *wip;
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__autoreleasing id *aip;
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__unsafe_unretained id *uip;
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identity<id> res1 = accept_strong_ptr(sip);
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identity<__strong id> res2 = accept_any_ptr(sip);
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__strong id si;
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__weak id wi;
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__autoreleasing id ai;
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__unsafe_unretained id ui;
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identity<id> res3 = accept_strong_ref(si);
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identity<__strong id> res4 = accept_any_ref(si);
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identity<__weak id> res5 = accept_any_ref(wi);
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identity<__autoreleasing id> res6 = accept_any_ref(ai);
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identity<__unsafe_unretained id> res7 = accept_any_ref(ui);
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}
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void test_func_deduction_A() {
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__strong A * *sip;
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__weak A * *wip;
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__autoreleasing A * *aip;
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__unsafe_unretained A * *uip;
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identity<A *> res1 = accept_strong_ptr(sip);
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identity<__strong A *> res2 = accept_any_ptr(sip);
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__strong A * si;
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__weak A * wi;
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__autoreleasing A * ai;
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__unsafe_unretained A * ui;
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identity<A *> res3 = accept_strong_ref(si);
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identity<__strong A *> res4 = accept_any_ref(si);
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identity<__weak A *> res5 = accept_any_ref(wi);
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identity<__autoreleasing A *> res6 = accept_any_ref(ai);
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identity<__unsafe_unretained A *> res7 = accept_any_ref(ui);
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}
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// Test partial ordering (qualified vs. non-qualified).
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template<typename T>
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struct classify_pointer_pointer {
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static const unsigned value = 0;
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};
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template<typename T>
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struct classify_pointer_pointer<T*> {
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static const unsigned value = 1;
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};
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template<typename T>
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struct classify_pointer_pointer<__strong T*> {
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static const unsigned value = 2;
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};
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template<typename T>
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struct classify_pointer_pointer<__weak T*> {
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static const unsigned value = 3;
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};
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template<typename T>
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struct classify_pointer_pointer<T&> {
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static const unsigned value = 4;
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};
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template<typename T>
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struct classify_pointer_pointer<__strong T&> {
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static const unsigned value = 5;
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};
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template<typename T>
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struct classify_pointer_pointer<__weak T&> {
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static const unsigned value = 6;
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};
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int classify_ptr1[classify_pointer_pointer<int>::value == 0? 1 : -1];
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int classify_ptr2[classify_pointer_pointer<int *>::value == 1? 1 : -1];
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int classify_ptr3[classify_pointer_pointer<id __strong *>::value == 2? 1 : -1];
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int classify_ptr4[classify_pointer_pointer<id __weak *>::value == 3? 1 : -1];
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int classify_ptr5[classify_pointer_pointer<int&>::value == 4? 1 : -1];
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int classify_ptr6[classify_pointer_pointer<id __strong&>::value == 5? 1 : -1];
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int classify_ptr7[classify_pointer_pointer<id __weak&>::value == 6? 1 : -1];
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int classify_ptr8[classify_pointer_pointer<id __autoreleasing&>::value == 4? 1 : -1];
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int classify_ptr9[classify_pointer_pointer<id __unsafe_unretained&>::value == 4? 1 : -1];
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int classify_ptr10[classify_pointer_pointer<id __autoreleasing *>::value == 1? 1 : -1];
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int classify_ptr11[classify_pointer_pointer<id __unsafe_unretained *>::value == 1? 1 : -1];
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int classify_ptr12[classify_pointer_pointer<int *>::value == 1? 1 : -1];
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int classify_ptr13[classify_pointer_pointer<A * __strong *>::value == 2? 1 : -1];
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int classify_ptr14[classify_pointer_pointer<A * __weak *>::value == 3? 1 : -1];
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int classify_ptr15[classify_pointer_pointer<int&>::value == 4? 1 : -1];
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int classify_ptr16[classify_pointer_pointer<A * __strong&>::value == 5? 1 : -1];
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int classify_ptr17[classify_pointer_pointer<A * __weak&>::value == 6? 1 : -1];
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int classify_ptr18[classify_pointer_pointer<A * __autoreleasing&>::value == 4? 1 : -1];
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int classify_ptr19[classify_pointer_pointer<A * __unsafe_unretained&>::value == 4? 1 : -1];
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int classify_ptr20[classify_pointer_pointer<A * __autoreleasing *>::value == 1? 1 : -1];
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int classify_ptr21[classify_pointer_pointer<A * __unsafe_unretained *>::value == 1? 1 : -1];
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template<typename T> int& qual_vs_unqual_ptr(__strong T*);
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template<typename T> double& qual_vs_unqual_ptr(__weak T*);
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template<typename T> float& qual_vs_unqual_ptr(T*);
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template<typename T> int& qual_vs_unqual_ref(__strong T&);
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template<typename T> double& qual_vs_unqual_ref(__weak T&);
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template<typename T> float& qual_vs_unqual_ref(T&);
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void test_qual_vs_unqual_id() {
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__strong id *sip;
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__weak id *wip;
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__autoreleasing id *aip;
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__unsafe_unretained id *uip;
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int &ir1 = qual_vs_unqual_ptr(sip);
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double &dr1 = qual_vs_unqual_ptr(wip);
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float &fr1 = qual_vs_unqual_ptr(aip);
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float &fr2 = qual_vs_unqual_ptr(uip);
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int &ir2 = qual_vs_unqual_ref(*sip);
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double &dr2 = qual_vs_unqual_ref(*wip);
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float &fr3 = qual_vs_unqual_ref(*aip);
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float &fr4 = qual_vs_unqual_ref(*uip);
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}
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void test_qual_vs_unqual_a() {
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__strong A * *sap;
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__weak A * *wap;
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__autoreleasing A * *aap;
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__unsafe_unretained A * *uap;
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int &ir1 = qual_vs_unqual_ptr(sap);
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double &dr1 = qual_vs_unqual_ptr(wap);
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float &fr1 = qual_vs_unqual_ptr(aap);
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float &fr2 = qual_vs_unqual_ptr(uap);
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int &ir2 = qual_vs_unqual_ref(*sap);
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double &dr2 = qual_vs_unqual_ref(*wap);
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float &fr3 = qual_vs_unqual_ref(*aap);
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float &fr4 = qual_vs_unqual_ref(*uap);
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}
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namespace rdar9828157 {
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// Template argument deduction involving lifetime qualifiers and
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// non-lifetime types.
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class A { };
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template<typename T> float& f(T&);
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template<typename T> int& f(__strong T&);
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template<typename T> double& f(__weak T&);
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void test_f(A* ap) {
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float &fr = (f)(ap);
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}
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}
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namespace rdar10862386 {
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// More deduction with lifetime qualifiers.
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template <typename T>
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int testing(const T &) {
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return 1;
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}
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void test() {
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testing(1);
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testing("hi");
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testing<NSString *>(@"hi");
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testing(@"hi");
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}
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}
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namespace rdar12367446 {
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template <class T> class A;
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template <class R> class A<R()> {};
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void test() {
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A<id()> value;
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}
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}
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namespace rdar14467941 {
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template<typename T> int &takePtr(const T &);
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template<typename T> float &takePtr(T * const &);
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void testTakePtr(A *a) {
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float &fr1 = takePtr(a);
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float &fr2 = takePtr<A>(a);
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}
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}
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