34 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: c++03, c++11, c++14, c++17, c++2010 11// <mdspan>12 13// template<class Extents>14// class layout_stride::mapping;15 16// If Extents is not a specialization of extents, then the program is17// ill-formed.18 19// Mandates: If Extents::rank_dynamic() == 0 is true, then the size of the20// multidimensional index space Extents() is representable as a value of type21// typename Extents::index_type.22 23#include <mdspan>24 25void not_extents() {26 // expected-error-re@*:* {{static assertion failed {{.*}}layout_stride::mapping template argument must be a specialization of extents}}27 [[maybe_unused]] std::layout_stride::mapping<void> mapping;28}29 30void representable() {31 // expected-error-re@*:* {{static assertion failed {{.*}}layout_stride::mapping product of static extents must be representable as index_type.}}32 [[maybe_unused]] std::layout_stride::mapping<std::extents<signed char, 20, 20>> mapping;33}34