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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
namespace std {
template<typename T> struct initializer_list {
T *p;
__SIZE_TYPE__ n;
initializer_list(T*, __SIZE_TYPE__);
};
}
struct X0 { // expected-note 8{{candidate}}
X0(int*, float*); // expected-note 4{{candidate}}
};
template<typename T, typename U>
X0 f0(T t, U u) {
X0 x0(t, u); // expected-error{{no matching}}
return X0(t, u); // expected-error{{no matching}}
}
void test_f0(int *ip, float *fp, double *dp) {
f0(ip, fp);
f0(ip, dp); // expected-note{{instantiation}}
}
template<typename Ret, typename T, typename U>
Ret f1(Ret *retty, T t, U u) {
Ret r0(t, u); // expected-error{{no matching}}
return Ret(t, u); // expected-error{{no matching}}
}
void test_f1(X0 *x0, int *ip, float *fp, double *dp) {
f1(x0, ip, fp);
f1(x0, ip, dp); // expected-note{{instantiation}}
}
namespace PR6457 {
template <typename T> struct X { explicit X(T* p = 0) { }; };
template <typename T> struct Y { Y(int, const T& x); };
struct A { };
template <typename T>
struct B {
B() : y(0, X<A>()) { }
Y<X<A> > y;
};
B<int> b;
}
namespace PR6657 {
struct X
{
X (int, int) { }
};
template <typename>
void f0()
{
X x = X(0, 0);
}
void f1()
{
f0<int>();
}
}
// Instantiate out-of-line definitions of static data members which complete
// types through an initializer even when the only use of the member that would
// cause instantiation is in an unevaluated context, but one requiring its
// complete type.
namespace PR10001 {
template <typename T> struct S {
static const int arr[];
static const int x;
static int f();
};
template <typename T> const int S<T>::arr[] = { 1, 2, 3 };
template <typename T> const int S<T>::x = sizeof(arr) / sizeof(arr[0]);
template <typename T> int S<T>::f() { return x; }
int x = S<int>::f();
}
namespace PR7985 {
template<int N> struct integral_c { };
template <typename T, int N>
integral_c<N> array_lengthof(T (&x)[N]) { return integral_c<N>(); } // expected-note 2{{candidate template ignored: could not match 'T [N]' against 'const Data<}}
template<typename T>
struct Data {
T x;
};
template<typename T>
struct Description {
static const Data<T> data[];
};
template<typename T>
const Data<T> Description<T>::data[] = {{ 1 }}; // expected-error{{cannot initialize a member subobject of type 'int *' with an rvalue of type 'int'}}
template<>
const Data<float*> Description<float*>::data[];
void test() {
integral_c<1> ic1 = array_lengthof(Description<int>::data);
(void)sizeof(array_lengthof(Description<float>::data));
(void)sizeof(array_lengthof( // expected-error{{no matching function for call to 'array_lengthof'}}
Description<int*>::data // expected-note{{in instantiation of static data member 'PR7985::Description<int *>::data' requested here}}
));
array_lengthof(Description<float*>::data); // expected-error{{no matching function for call to 'array_lengthof'}}
}
}
namespace PR13064 {
// Ensure that in-class direct-initialization is instantiated as
// direct-initialization and likewise copy-initialization is instantiated as
// copy-initialization.
struct A { explicit A(int); }; // expected-note{{here}}
template<typename T> struct B { T a { 0 }; };
B<A> b;
template <typename T> struct C { // expected-note {{in instantiation of default member initializer}}
T a = {0}; // expected-error{{explicit}}
};
C<A> c; // expected-note {{in evaluation of exception spec}}
}
namespace PR16903 {
// Make sure we properly instantiate list-initialization.
template<typename T>
void fun (T it) {
int m = 0;
for (int i = 0; i < 4; ++i, ++it){
m |= long{char{*it}};
}
}
int test() {
char in[4] = {0,0,0,0};
fun(in);
}
}
namespace ReturnStmtIsInitialization {
struct X {
X() {}
X(const X &) = delete;
};
template<typename T> X f() { return {}; }
auto &&x = f<void>();
}
namespace InitListUpdate {
struct A { int n; };
using AA = A[1];
// Check that an init list update doesn't "lose" the pack-ness of an expression.
template <int... N> void f() {
g(AA{0, [0].n = N} ...); // expected-warning 3{{extension}} expected-note {{here}} expected-warning 3{{overrides prior init}} expected-note 3{{previous init}}
g(AA{N, [0].n = 0} ...); // expected-warning 3{{extension}} expected-note {{here}} expected-warning 3{{overrides prior init}} expected-note 3{{previous init}}
};
void g(AA, AA);
void h() { f<1, 2>(); } // expected-note {{instantiation of}}
}
namespace RebuildStdInitList {
struct A { A(std::initializer_list<int>, int = 0) {} };
struct B : A { using A::A; };
struct PES { PES(B); };
// Check we can rebuild the use of the default argument here. This requires
// going to the original (base class) constructor, because we don't copy
// default arguments onto our fake derived class inherited constructors.
template<typename U> void f() { PES({1, 2, 3}); }
void g() { f<int>(); }
}
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