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// P0892R2
// { dg-do compile }
// { dg-options "-std=c++2a -pedantic" }
template<typename T>
struct A {
explicit A(const T&, ...) noexcept;
A(T&&, ...);
};
int i;
A a1 = { i, i }; // { dg-error "deduction|cannot" }
A a2{ i, i };
A a3{ 0, i };
A a4 = { 0, i };
template<typename T> A(const T&, const T&) -> A<T&>;
template<typename T> explicit A(T&&, T&&) -> A<T>;
A a5 = { 0, 1 }; // { dg-error "deduction|ambiguous" }
A a6{ 0, 1 };
template<typename T>
struct B {
template<typename U> using TA = T;
template<typename U> B(U, TA<U>);
};
B b{(int *)0, (char *)0};
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