82 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++1710 11// <array>12 13// LWG-3382 NTTP for pair and array:14// array<T, N> is a structural type ([temp.param]) if T is a structural type.15 16#include <array>17 18#include <cstddef>19#include <string>20 21struct LiteralBase {};22struct LiteralNSDM {};23 24struct LiteralType : LiteralBase {25 LiteralNSDM nsdm;26};27 28struct NotALiteral {29 NotALiteral() {}30};31 32int i;33NotALiteral not_a_literal;34 35namespace test_full_type {36template <class T, std::size_t S, std::array<T, S> A>37struct test {};38 39using A = test<int, 2, std::array{2, 3}>;40using B = test<LiteralType, 0, std::array<LiteralType, 0>{}>;41using C = test<int*, 1, std::array<int*, 1>{&i}>;42using D = test<NotALiteral*, 1, std::array<NotALiteral*, 1>{¬_a_literal}>;43 44using E = test<NotALiteral, 1, std::array<NotALiteral, 1>{}>;45// expected-error-re@*:* {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1U{{L{0,2}.*}}>'}}46 47using F = test<std::string, 2, std::array<std::string, 2>{}>;48// expected-error-re@*:* {{type {{.+}} of non-type template parameter is not a structural type}}49} // namespace test_full_type50 51namespace test_ctad {52template <std::array A>53struct test {};54 55using A = test<std::array{2, 3}>;56using B = test<std::array<LiteralType, 0>{}>;57using C = test<std::array<int*, 1>{&i}>;58using D = test<std::array<NotALiteral*, 1>{¬_a_literal}>;59 60using E = test<std::array<NotALiteral, 1>{}>;61// expected-error@-1 {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1>'}}62 63using F = test<std::array<std::string, 2>{}>;64// expected-error-re@-1 {{type 'std::array<{{(std::)?}}string, 2>'{{( \(aka 'std::array<std::string, 2>'\))?}} of non-type template parameter is not a structural type}}65} // namespace test_ctad66 67namespace test_auto {68template <auto A>69struct test {};70 71using A = test<std::array{2, 3}>;72using B = test<std::array<LiteralType, 0>{}>;73using C = test<std::array<int*, 1>{&i}>;74using D = test<std::array<NotALiteral*, 1>{¬_a_literal}>;75 76using E = test<std::array<NotALiteral, 1>{}>;77// expected-error@-1 {{non-type template parameter has non-literal type 'std::array<NotALiteral, 1>'}}78 79using F = test<std::array<std::string, 2>{}>;80// expected-error-re@-1 {{type {{.+}} of non-type template parameter is not a structural type}}81} // namespace test_auto82