// RUN: %clang_cc1 -std=c++11 -fsyntax-only -fobjc-arc -fobjc-runtime-has-weak -fobjc-weak -verify -fblocks -fobjc-exceptions %s
// "Move" semantics, trivial version.
void move_it(__strong id &&from) {
id to = static_cast<__strong id&&>(from);
}
// Deduction with 'auto'.
@interface A
+ alloc;
- init;
@end
// don't warn about this
extern "C" A* MakeA();
// Ensure that deduction works with lifetime qualifiers.
void deduction(id obj) {
auto a = [[A alloc] init];
__strong A** aPtr = &a;
auto a2([[A alloc] init]);
__strong A** aPtr2 = &a2;
__strong id *idp = new auto(obj);
__strong id array[17];
for (auto x : array) { // expected-warning{{'auto' deduced as 'id' in declaration of 'x'}}
__strong id *xPtr = &x;
}
@try {
} @catch (auto e) { // expected-error {{'auto' not allowed in exception declaration}}
}
}
void test1a() {
__autoreleasing id p; // expected-note 2 {{'p' declared here}}
(void) [&p] {};
(void) [p] {}; // expected-error {{cannot capture __autoreleasing variable in a lambda by copy}}
(void) [=] { (void) p; }; // expected-error {{cannot capture __autoreleasing variable in a lambda by copy}}
}
void test1b() {
__autoreleasing id v;
__autoreleasing id &p = v; // expected-note 2 {{'p' declared here}}
(void) [&p] {};
(void) [p] {}; // expected-error {{cannot capture __autoreleasing variable in a lambda by copy}}
(void) [=] { (void) p; }; // expected-error {{cannot capture __autoreleasing variable in a lambda by copy}}
}
void test1c() {
__autoreleasing id v; // expected-note {{'v' declared here}}
__autoreleasing id &p = v;
(void) ^{ (void) p; };
(void) ^{ (void) v; }; // expected-error {{cannot capture __autoreleasing variable in a block}}
}
// warn when initializing an 'auto' variable with an 'id' initializer expression
void testAutoId(id obj) {
auto x = obj; // expected-warning{{'auto' deduced as 'id' in declaration of 'x'}}
}
@interface Array
+ (instancetype)new;
- (id)objectAtIndex:(int)index;
@end
// ...but don't warn if it's coming from a template parameter.
template<typename T, int N>
void autoTemplateFunction(T param, id obj, Array *arr) {
auto x = param; // no-warning
auto y = obj; // expected-warning{{'auto' deduced as 'id' in declaration of 'y'}}
auto z = [arr objectAtIndex:N]; // expected-warning{{'auto' deduced as 'id' in declaration of 'z'}}
}
void testAutoIdTemplate(id obj) {
autoTemplateFunction<id, 2>(obj, obj, [Array new]); // no-warning
}
@interface NSObject @end
typedef __builtin_va_list va_list;
@interface MyClass : NSObject
@end
@implementation MyClass
+ (void)fooMethod:(id)firstArg, ... {
va_list args;
__builtin_va_arg(args, id);
}
@end
namespace rdar12078752 {
void f() {
NSObject* o =0;
__autoreleasing decltype(o) o2 = o;
__autoreleasing auto o3 = o;
}
}
namespace test_err_arc_array_param_no_ownership {
template <class T>
void func(T a) {}
void test() {
func([](A *a[]){}); // expected-error{{must explicitly describe intended ownership of an object array parameter}}
func(^(A *a[]){}); // expected-error{{must explicitly describe intended ownership of an object array parameter}}
}
}
namespace test_union {
// Implicitly-declared special functions of a union are deleted by default if
// ARC is enabled and the union has an ObjC pointer field.
union U0 {
id f0; // expected-note 6 {{'U0' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
};
union U1 {
__weak id f0; // expected-note 12 {{'U1' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
U1() = default; // expected-warning {{explicitly defaulted default constructor is implicitly deleted}} expected-note {{explicitly defaulted function was implicitly deleted here}} expected-note{{replace 'default'}}
~U1() = default; // expected-warning {{explicitly defaulted destructor is implicitly deleted}} expected-note {{explicitly defaulted function was implicitly deleted here}} expected-note{{replace 'default'}}
U1(const U1 &) = default; // expected-warning {{explicitly defaulted copy constructor is implicitly deleted}} expected-note 2 {{explicitly defaulted function was implicitly deleted here}} expected-note{{replace 'default'}}
U1(U1 &&) = default; // expected-warning {{explicitly defaulted move constructor is implicitly deleted}} expected-note{{replace 'default'}}
U1 & operator=(const U1 &) = default; // expected-warning {{explicitly defaulted copy assignment operator is implicitly deleted}} expected-note 2 {{explicitly defaulted function was implicitly deleted here}} expected-note{{replace 'default'}}
U1 & operator=(U1 &&) = default; // expected-warning {{explicitly defaulted move assignment operator is implicitly deleted}} expected-note{{replace 'default'}}
};
id getStrong();
// If the ObjC pointer field of a union has a default member initializer, the
// implicitly-declared default constructor of the union is not deleted by
// default.
union U2 {
id f0 = getStrong(); // expected-note 4 {{'U2' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
~U2();
};
// It's fine if the user has explicitly defined the special functions.
union U3 {
id f0;
U3();
~U3();
U3(const U3 &);
U3(U3 &&);
U3 & operator=(const U3 &);
U3 & operator=(U3 &&);
};
// ObjC pointer fields in anonymous union fields delete the defaulted special
// functions of the containing class.
struct S0 {
union {
id f0; // expected-note-re 6 {{{{.*}} of '(anonymous union at {{.*}})' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
char f1;
};
};
struct S1 {
union {
union { // expected-note-re {{copy constructor of 'S1' is implicitly deleted because field 'test_union::S1::(anonymous union at {{.*}})' has a deleted copy constructor}} expected-note-re {{copy assignment operator of 'S1' is implicitly deleted because field 'test_union::S1::(anonymous union at {{.*}})' has a deleted copy assignment operator}} expected-note-re 4 {{'S1' is implicitly deleted because field 'test_union::S1::(anonymous union at {{.*}})' has a deleted}}
id f0; // expected-note-re 2 {{{{.*}} of '(anonymous union at {{.*}}' is implicitly deleted because variant field 'f0' is an ObjC pointer}}
char f1;
};
int f2;
};
};
struct S2 {
union {
// FIXME: the note should say 'f0' is causing the special functions to be deleted.
struct { // expected-note-re 6 {{'S2' is implicitly deleted because variant field 'test_union::S2::(anonymous struct at {{.*}})' has a non-trivial}}
id f0;
int f1;
};
int f2;
};
int f3;
};
U0 *x0;
U1 *x1;
U2 *x2;
U3 *x3;
S0 *x4;
S1 *x5;
S2 *x6;
static union { // expected-error {{call to implicitly-deleted default constructor of}}
id g0; // expected-note-re {{default constructor of '(unnamed union at {{.*}}' is implicitly deleted because variant field 'g0' is an ObjC pointer}}
};
static union { // expected-error {{call to implicitly-deleted default constructor of}}
union { // expected-note-re {{default constructor of '(unnamed union at {{.*}}' is implicitly deleted because field 'test_union::(anonymous union at {{.*}})' has a deleted default constructor}}
union { // expected-note-re {{default constructor of '(anonymous union at {{.*}}' is implicitly deleted because field 'test_union::(anonymous union at {{.*}})' has a deleted default constructor}}
__weak id g1; // expected-note-re {{default constructor of '(anonymous union at {{.*}}' is implicitly deleted because variant field 'g1' is an ObjC pointer}}
int g2;
};
int g3;
};
int g4;
};
void testDefaultConstructor() {
U0 t0; // expected-error {{call to implicitly-deleted default constructor}}
U1 t1; // expected-error {{call to implicitly-deleted default constructor}}
U2 t2;
U3 t3;
S0 t4; // expected-error {{call to implicitly-deleted default constructor}}
S1 t5; // expected-error {{call to implicitly-deleted default constructor}}
S2 t6; // expected-error {{call to implicitly-deleted default constructor}}
}
void testDestructor(U0 *u0, U1 *u1, U2 *u2, U3 *u3, S0 *s0, S1 *s1, S2 *s2) {
delete u0; // expected-error {{attempt to use a deleted function}}
delete u1; // expected-error {{attempt to use a deleted function}}
delete u2;
delete u3;
delete s0; // expected-error {{attempt to use a deleted function}}
delete s1; // expected-error {{attempt to use a deleted function}}
delete s2; // expected-error {{attempt to use a deleted function}}
}
void testCopyConstructor(U0 *u0, U1 *u1, U2 *u2, U3 *u3, S0 *s0, S1 *s1, S2 *s2) {
U0 t0(*u0); // expected-error {{call to implicitly-deleted copy constructor}}
U1 t1(*u1); // expected-error {{call to implicitly-deleted copy constructor}}
U2 t2(*u2); // expected-error {{call to implicitly-deleted copy constructor}}
U3 t3(*u3);
S0 t4(*s0); // expected-error {{call to implicitly-deleted copy constructor}}
S1 t5(*s1); // expected-error {{call to implicitly-deleted copy constructor}}
S2 t6(*s2); // expected-error {{call to implicitly-deleted copy constructor}}
}
void testCopyAssignment(U0 *u0, U1 *u1, U2 *u2, U3 *u3, S0 *s0, S1 *s1, S2 *s2) {
*x0 = *u0; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x1 = *u1; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x2 = *u2; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x3 = *u3;
*x4 = *s0; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x5 = *s1; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x6 = *s2; // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
}
// The diagnostics below refer to the deleted copy constructors and assignment
// operators since defaulted move constructors and assignment operators that are
// defined as deleted are ignored by overload resolution.
void testMoveConstructor(U0 *u0, U1 *u1, U2 *u2, U3 *u3, S0 *s0, S1 *s1, S2 *s2) {
U0 t0(static_cast<U0 &&>(*u0)); // expected-error {{call to implicitly-deleted copy constructor}}
U1 t1(static_cast<U1 &&>(*u1)); // expected-error {{call to implicitly-deleted copy constructor}}
U2 t2(static_cast<U2 &&>(*u2)); // expected-error {{call to implicitly-deleted copy constructor}}
U3 t3(static_cast<U3 &&>(*u3));
S0 t4(static_cast<S0 &&>(*s0)); // expected-error {{call to implicitly-deleted copy constructor}}
S1 t5(static_cast<S1 &&>(*s1)); // expected-error {{call to implicitly-deleted copy constructor}}
S2 t6(static_cast<S2 &&>(*s2)); // expected-error {{call to implicitly-deleted copy constructor}}
}
void testMoveAssignment(U0 *u0, U1 *u1, U2 *u2, U3 *u3, S0 *s0, S1 *s1, S2 *s2) {
*x0 = static_cast<U0 &&>(*u0); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x1 = static_cast<U1 &&>(*u1); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x2 = static_cast<U2 &&>(*u2); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x3 = static_cast<U3 &&>(*u3);
*x4 = static_cast<S0 &&>(*s0); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x5 = static_cast<S1 &&>(*s1); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
*x6 = static_cast<S2 &&>(*s2); // expected-error {{cannot be assigned because its copy assignment operator is implicitly deleted}}
}
}
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