31cbe0f240
C++98 and C++03 are effectively aliases as far as Clang is concerned. As such, allowing both std=c++98 and std=c++03 as Lit parameters is just slightly confusing, but provides no value. It's similar to allowing both std=c++17 and std=c++1z, which we don't do. This was discovered because we had an internal bot that ran the test suite under both c++98 AND c++03 -- one of which is redundant. Differential Revision: https://reviews.llvm.org/D80926
75 lines
3.7 KiB
C++
75 lines
3.7 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++03, c++11, c++14, c++17
|
|
|
|
// <span>
|
|
|
|
// constexpr span(pointer first, pointer last);
|
|
// Requires: [first, last) shall be a valid range.
|
|
// If extent is not equal to dynamic_extent, then last - first shall be equal to extent.
|
|
//
|
|
|
|
#include <span>
|
|
#include <cassert>
|
|
#include <string>
|
|
|
|
#include "test_macros.h"
|
|
|
|
|
|
int arr[] = {1,2,3};
|
|
const int carr[] = {4,5,6};
|
|
volatile int varr[] = {7,8,9};
|
|
const volatile int cvarr[] = {1,3,5};
|
|
|
|
template<class T, size_t extent>
|
|
std::span<T, extent> createImplicitSpan(T* first, T* last) {
|
|
return {first, last}; // expected-error {{chosen constructor is explicit in copy-initialization}}
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
// We can't check that the size doesn't match - because that's a runtime property
|
|
// std::span<int, 2> s1(arr, arr + 3);
|
|
|
|
// Type wrong
|
|
{
|
|
std::span<float> s1(arr, arr + 3); // expected-error {{no matching constructor for initialization of 'std::span<float>'}}
|
|
std::span<float, 3> s2(arr, arr + 3); // expected-error {{no matching constructor for initialization of 'std::span<float, 3>'}}
|
|
}
|
|
|
|
// CV wrong (dynamically sized)
|
|
{
|
|
std::span< int> s1{ carr, carr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s2{ varr, varr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span< int> s3{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int>'}}
|
|
std::span<const int> s4{ varr, varr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
std::span<const int> s5{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<const int>'}}
|
|
std::span< volatile int> s6{ carr, carr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
std::span< volatile int> s7{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int>'}}
|
|
}
|
|
|
|
// CV wrong (statically sized)
|
|
{
|
|
std::span< int,3> s1{ carr, carr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
|
|
std::span< int,3> s2{ varr, varr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
|
|
std::span< int,3> s3{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<int, 3>'}}
|
|
std::span<const int,3> s4{ varr, varr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 3>'}}
|
|
std::span<const int,3> s5{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<const int, 3>'}}
|
|
std::span< volatile int,3> s6{ carr, carr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 3>'}}
|
|
std::span< volatile int,3> s7{cvarr, cvarr + 3}; // expected-error {{no matching constructor for initialization of 'std::span<volatile int, 3>'}}
|
|
}
|
|
|
|
// explicit constructor necessary
|
|
{
|
|
createImplicitSpan<int, 1>(arr, arr + 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|