106 lines
5.8 KiB
C++
106 lines
5.8 KiB
C++
// -*- C++ -*-
|
|
//===------------------------------ span ---------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===---------------------------------------------------------------------===//
|
|
// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
|
|
|
|
// <span>
|
|
|
|
// template<class OtherElementType, ptrdiff_t OtherExtent>
|
|
// constexpr span(const span<OtherElementType, OtherExtent>& s) noexcept;
|
|
//
|
|
// Remarks: This constructor shall not participate in overload resolution unless:
|
|
// Extent == dynamic_extent || Extent == OtherExtent is true, and
|
|
// OtherElementType(*)[] is convertible to ElementType(*)[].
|
|
|
|
|
|
#include <span>
|
|
#include <cassert>
|
|
#include <string>
|
|
|
|
#include "test_macros.h"
|
|
|
|
void checkCV ()
|
|
{
|
|
// std::span< int> sp;
|
|
std::span<const int> csp;
|
|
std::span< volatile int> vsp;
|
|
std::span<const volatile int> cvsp;
|
|
|
|
// std::span< int, 0> sp0;
|
|
std::span<const int, 0> csp0;
|
|
std::span< volatile int, 0> vsp0;
|
|
std::span<const volatile int, 0> cvsp0;
|
|
|
|
// Try to remove const and/or volatile (dynamic -> dynamic)
|
|
{
|
|
std::span< int> s1{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s2{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s3{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
|
|
std::span<const int> s4{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
std::span<const int> s5{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
|
|
std::span< volatile int> s6{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
std::span< volatile int> s7{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
}
|
|
|
|
// Try to remove const and/or volatile (static -> static)
|
|
{
|
|
std::span< int, 0> s1{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
std::span< int, 0> s2{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
std::span< int, 0> s3{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
|
|
std::span<const int, 0> s4{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
|
|
std::span<const int, 0> s5{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
|
|
|
|
std::span< volatile int, 0> s6{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
|
|
std::span< volatile int, 0> s7{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
|
|
}
|
|
|
|
// Try to remove const and/or volatile (static -> dynamic)
|
|
{
|
|
std::span< int> s1{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s2{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s3{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
|
|
std::span<const int> s4{ vsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
std::span<const int> s5{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
|
|
std::span< volatile int> s6{ csp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
std::span< volatile int> s7{cvsp0}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
}
|
|
|
|
// Try to remove const and/or volatile (static -> static)
|
|
{
|
|
std::span< int, 0> s1{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
std::span< int, 0> s2{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
std::span< int, 0> s3{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<int, 0>'}}
|
|
|
|
std::span<const int, 0> s4{ vsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
|
|
std::span<const int, 0> s5{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 0>'}}
|
|
|
|
std::span< volatile int, 0> s6{ csp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
|
|
std::span< volatile int, 0> s7{cvsp}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 0>'}}
|
|
}
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
std::span<int> sp;
|
|
std::span<int, 0> sp0;
|
|
|
|
std::span<float> s1{sp}; // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
|
|
std::span<float> s2{sp0}; // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
|
|
std::span<float, 0> s3{sp}; // expected-error {{no matching constructor for initialization of 'std::span<float, 0>'}}
|
|
std::span<float, 0> s4{sp0}; // expected-error {{no matching constructor for initialization of 'std::span<float, 0>'}}
|
|
|
|
checkCV();
|
|
|
|
return 0;
|
|
}
|