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From: Patrick Palka <ppalka@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r11-3503] libstdc++: Add test that tracks range adaptors' sizes Date: Mon, 28 Sep 2020 16:06:03 +0000 (GMT) [thread overview] Message-ID: <20200928160603.E6353385040F@sourceware.org> (raw) https://gcc.gnu.org/g:ea51fba504d05e94f7ac97e7f278652d684418b2 commit r11-3503-gea51fba504d05e94f7ac97e7f278652d684418b2 Author: Patrick Palka <ppalka@redhat.com> Date: Mon Sep 28 11:55:21 2020 -0400 libstdc++: Add test that tracks range adaptors' sizes libstdc++-v3/ChangeLog: * testsuite/std/ranges/adaptors/sizeof.cc: New test. Diff: --- .../testsuite/std/ranges/adaptors/sizeof.cc | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/libstdc++-v3/testsuite/std/ranges/adaptors/sizeof.cc b/libstdc++-v3/testsuite/std/ranges/adaptors/sizeof.cc new file mode 100644 index 00000000000..2182981b7a2 --- /dev/null +++ b/libstdc++-v3/testsuite/std/ranges/adaptors/sizeof.cc @@ -0,0 +1,52 @@ +// Copyright (C) 2020 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the +// terms of the GNU General Public License as published by the +// Free Software Foundation; either version 3, or (at your option) +// any later version. + +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. + +// You should have received a copy of the GNU General Public License along +// with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + +// { dg-options "-std=gnu++2a" } +// { dg-do compile { target c++2a } } + +#include <ranges> +#include <string_view> + +namespace ranges = std::ranges; + +auto pred_f(int x) { return x%2 == 0; }; +auto pred_l = [] (int x) { return x%2 == 0; }; + +auto func_f(int x) { return x*x; } +auto func_l = [] (int x) { return x*x; }; + +using V = ranges::subrange<int*, int*>; +constexpr auto ptr = sizeof(int*); +static_assert(sizeof(V) == 2*ptr); + +static_assert(sizeof(ranges::take_view<V>) == 4*ptr); +static_assert(sizeof(ranges::drop_view<V>) == 4*ptr); + +static_assert(sizeof(ranges::filter_view<V, decltype(&pred_f)>) == 5*ptr); +static_assert(sizeof(ranges::take_while_view<V, decltype(&pred_f)>) == 4*ptr); +static_assert(sizeof(ranges::drop_while_view<V, decltype(&pred_f)>) == 5*ptr); +static_assert(sizeof(ranges::transform_view<V, decltype(&func_f)>) == 4*ptr); + +static_assert(sizeof(ranges::filter_view<V, decltype(pred_l)>) == 4*ptr); +static_assert(sizeof(ranges::take_while_view<V, decltype(pred_l)>) == 3*ptr); +static_assert(sizeof(ranges::drop_while_view<V, decltype(pred_l)>) == 4*ptr); +static_assert(sizeof(ranges::transform_view<V, decltype(func_l)>) == 3*ptr); + +static_assert(sizeof(ranges::split_view<V, std::string_view>) == 5*ptr); + +static_assert + (sizeof(ranges::reverse_view<ranges::filter_view<V, decltype(pred_l)>>) == 5*ptr);
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