From: Patrick Palka <ppalka@redhat.com>
To: gcc-patches@gcc.gnu.org
Cc: libstdc++@gcc.gnu.org, Patrick Palka <ppalka@redhat.com>
Subject: [PATCH 3/4] libstdc++: Add test that tracks range adaptors' sizes
Date: Mon, 28 Sep 2020 00:48:53 -0400 [thread overview]
Message-ID: <20200928044854.46674-3-ppalka@redhat.com> (raw)
In-Reply-To: <20200928044854.46674-1-ppalka@redhat.com>
libstdc++-v3/ChangeLog:
* testsuite/std/ranges/adaptors/sizeof.cc: New test.
---
.../testsuite/std/ranges/adaptors/sizeof.cc | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 libstdc++-v3/testsuite/std/ranges/adaptors/sizeof.cc
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..5fb1ab7e4da
--- /dev/null
+++ b/libstdc++-v3/testsuite/std/ranges/adaptors/sizeof.cc
@@ -0,0 +1,49 @@
+// 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);
--
2.28.0.618.g9bc233ae1c
next prev parent reply other threads:[~2020-09-28 4:49 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-28 4:48 [PATCH 1/4] libstdc++: Reduce the size of an unbounded iota_view Patrick Palka
2020-09-28 4:48 ` [PATCH 2/4] libstdc++: Reduce the size of a subrange with empty sentinel type Patrick Palka
2020-09-28 9:32 ` Jonathan Wakely
2020-09-28 4:48 ` Patrick Palka [this message]
2020-09-28 9:32 ` [PATCH 3/4] libstdc++: Add test that tracks range adaptors' sizes Jonathan Wakely
2020-09-28 4:48 ` [PATCH 4/4] libstdc++: Rearrange some range adaptors' data members Patrick Palka
2020-09-28 9:34 ` Jonathan Wakely
2020-09-28 13:11 ` Patrick Palka
2020-09-28 15:38 ` Jonathan Wakely
2020-09-28 9:31 ` [PATCH 1/4] libstdc++: Reduce the size of an unbounded iota_view Jonathan Wakely
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