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* [gcc(refs/vendors/ibm/heads/gcc-9-branch)] libstdc++: Mark experimental::net::system_context ctor deleted
@ 2020-09-04 19:06 Peter Bergner
0 siblings, 0 replies; only message in thread
From: Peter Bergner @ 2020-09-04 19:06 UTC (permalink / raw)
To: gcc-cvs, libstdc++-cvs
https://gcc.gnu.org/g:bdeb48c6d84c7651f180887c66f617aaaf598ac3
commit bdeb48c6d84c7651f180887c66f617aaaf598ac3
Author: Thomas Rodgers <rodgert@appliantology.com>
Date: Thu Apr 23 13:42:46 2020 -0700
libstdc++: Mark experimental::net::system_context ctor deleted
Backport from mainline.
* include/experimental/net/executor (system_context): Mark
system_context::system_context() = delete.
* testsuite/experimental/net/executor/1.cc: Add new
test to check system_context is not default constructible.
Diff:
---
libstdc++-v3/ChangeLog | 9 ++
libstdc++-v3/include/experimental/executor | 2 +-
.../testsuite/experimental/net/executor/1.cc | 100 +++++++++++++++++++++
3 files changed, 110 insertions(+), 1 deletion(-)
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 3f9eb05afc0..9434ab185fe 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,12 @@
+2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
+
+ Backport from mainline
+ 2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
+ * include/experimental/net/executor (system_context): Mark
+ system_context::system_context() = delete.
+ * testsuite/experimental/net/executor/1.cc: Add new
+ test to check system_context is not default constructible.
+
2020-04-23 Thomas Rodgers <trodgers@redhat.com>
Backport from mainline
diff --git a/libstdc++-v3/include/experimental/executor b/libstdc++-v3/include/experimental/executor
index 15f28de9b9d..9c0c7186234 100644
--- a/libstdc++-v3/include/experimental/executor
+++ b/libstdc++-v3/include/experimental/executor
@@ -854,7 +854,7 @@ inline namespace v1
// construct / copy / destroy:
- system_context() = default;
+ system_context() = delete;
system_context(const system_context&) = delete;
system_context& operator=(const system_context&) = delete;
diff --git a/libstdc++-v3/testsuite/experimental/net/executor/1.cc b/libstdc++-v3/testsuite/experimental/net/executor/1.cc
new file mode 100644
index 00000000000..cd0af4b7737
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/net/executor/1.cc
@@ -0,0 +1,100 @@
+// 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-do run { target c++14 } }
+
+#include <experimental/executor>
+#include <testsuite_hooks.h>
+
+namespace net = std::experimental::net;
+
+void
+test01()
+{
+ net::executor e;
+ VERIFY( !e );
+ VERIFY( e == nullptr );
+ VERIFY( nullptr == e );
+ VERIFY( e == e );
+ VERIFY( e == e );
+ net::executor e2;
+ VERIFY( e == e2 );
+ swap(e, e2);
+ VERIFY( e == e2 );
+ e = e2;
+ VERIFY( e == e2 );
+}
+
+void
+test02()
+{
+ struct E
+ {
+ void on_work_started() const noexcept { }
+ void on_work_finished() const noexcept { }
+ net::execution_context& context() const noexcept { return c; }
+ void dispatch(std::function<void()>, std::allocator<void>) const { }
+ void post(std::function<void()>, std::allocator<void>) const { }
+ void defer(std::function<void()>, std::allocator<void>) const { }
+
+ net::execution_context& c;
+
+ bool operator==(const E& rhs) const noexcept
+ { return &c == &rhs.c; }
+ };
+
+ net::execution_context c;
+ E d{c};
+ net::executor e(d);
+ VERIFY( e == e );
+ VERIFY( e != nullptr );
+ VERIFY( nullptr != e );
+
+ VERIFY( &e.context() == &c );
+#if __cpp_rtti
+ VERIFY( e.target_type() == typeid(E) );
+#endif
+ VERIFY( *e.target<E>() == d );
+ VERIFY( *e.target<const E>() == d );
+ VERIFY( *const_cast<const net::executor&>(e).target<E>() == d );
+ VERIFY( *const_cast<const net::executor&>(e).target<const E>() == d );
+
+ net::executor f = e;
+ VERIFY( f == e );
+ e = nullptr;
+ VERIFY( f != e );
+ swap(e, f);
+ VERIFY( f == nullptr );
+ VERIFY( nullptr != e );
+
+ net::executor g(E{c});
+ VERIFY( e == g );
+}
+
+void
+test03()
+{
+ static_assert( ! std::is_default_constructible<net::system_context>::value, "" );
+}
+
+int
+main()
+{
+ test01();
+ test02();
+ test03();
+}
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