1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++1z %s
2 // expected-no-diagnostics
3
4 template<typename T> int &f0(T*, int);
5 float &f0(void*, int);
6
test_f0(int * ip,void * vp)7 void test_f0(int* ip, void *vp) {
8 // One argument is better...
9 int &ir = f0(ip, 0);
10
11 // Prefer non-templates to templates
12 float &fr = f0(vp, 0);
13 }
14
15 namespace deduction_guide_example {
16 template<typename T> struct A {
17 A(T, int*);
18 A(A<T>&, int*);
19 enum { value };
20 };
21
22 template<typename T> struct remove_ref_impl;
23 template<typename T> struct remove_ref_impl<T&> { using type = T; };
24 template<typename T> using remove_ref = typename remove_ref_impl<T>::type;
25
26 // FIXME: The standard's example is wrong; we add a remove_ref<...> here to
27 // fix it.
28 template<typename T, int N = remove_ref<T>::value> A(T&&, int*) -> A<T**>;
29 A a{1, 0};
30 extern A<int> a;
31 A b{a, 0}; // uses the implicit ctor that is more specialized
32
33 A<int> *pa = &a;
34 A<int> *pb = &b;
35 }
36
37 // Partial ordering of function template specializations will be tested
38 // elsewhere
39 // FIXME: Initialization by user-defined conversion is tested elsewhere
40