[PATCH] Mark experimental::net::system_context ctor deleted

[Thomas Rodgers]

      * include/experimental/net/executor: Mark
      system_context::system_context() = default.
      * testsuite/experimental/net/executor/1.cc: Add new
      test for deleted system_context ::system_context().
---
 libstdc++-v3/include/experimental/executor            | 2 +-
 libstdc++-v3/testsuite/experimental/net/executor/1.cc | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/experimental/executor b/libstdc++-v3/include/experimental/executor
index b5c6e18a19a..fa39eaa0468 100644
--- a/libstdc++-v3/include/experimental/executor
+++ b/libstdc++-v3/include/experimental/executor
@@ -850,7 +850,7 @@ 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
index 456d620e193..cd0af4b7737 100644
--- a/libstdc++-v3/testsuite/experimental/net/executor/1.cc
+++ b/libstdc++-v3/testsuite/experimental/net/executor/1.cc
@@ -85,9 +85,16 @@ test02()
   VERIFY( e == g );
 }
 
+void
+test03()
+{
+  static_assert( ! std::is_default_constructible<net::system_context>::value, "" );
+}
+
 int
 main()
 {
   test01();
   test02();
+  test03();
 }
-- 
2.25.3