//===----------------------------------------------------------------------===// // // 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 // // constexpr size_type size() const noexcept; // #include #include #include #include "test_macros.h" template constexpr bool testConstexprSpan(Span sp, std::size_t sz) { ASSERT_NOEXCEPT(sp.size()); return sp.size() == sz; } template void testRuntimeSpan(Span sp, std::size_t sz) { ASSERT_NOEXCEPT(sp.size()); assert(sp.size() == sz); } struct A{}; constexpr int iArr1[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}; int iArr2[] = {10, 11, 12, 13, 14, 15, 16, 17, 18, 19}; int main(int, char**) { static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(), 0), ""); static_assert(testConstexprSpan(std::span(iArr1, 1), 1), ""); static_assert(testConstexprSpan(std::span(iArr1, 2), 2), ""); static_assert(testConstexprSpan(std::span(iArr1, 3), 3), ""); static_assert(testConstexprSpan(std::span(iArr1, 4), 4), ""); static_assert(testConstexprSpan(std::span(iArr1, 5), 5), ""); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span(), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span (), 0); testRuntimeSpan(std::span(), 0); testRuntimeSpan(std::span(iArr2, 1), 1); testRuntimeSpan(std::span(iArr2, 2), 2); testRuntimeSpan(std::span(iArr2, 3), 3); testRuntimeSpan(std::span(iArr2, 4), 4); testRuntimeSpan(std::span(iArr2, 5), 5); testRuntimeSpan(std::span(iArr2 + 5, 1), 1); testRuntimeSpan(std::span(iArr2 + 4, 2), 2); testRuntimeSpan(std::span(iArr2 + 3, 3), 3); testRuntimeSpan(std::span(iArr2 + 2, 4), 4); testRuntimeSpan(std::span(iArr2 + 1, 5), 5); std::string s; testRuntimeSpan(std::span(&s, (std::size_t) 0), 0); testRuntimeSpan(std::span(&s, 1), 1); return 0; }