libstdc++: Make net::ip::basic_endpoint comparisons constexpr

libstdc++-v3/ChangeLog:

	* include/experimental/internet (basic_endpoint): Add missing
	constexpr to comparison operators.
	* testsuite/experimental/net/internet/endpoint/cons.cc: New test.

2 files changed, 72 insertions, 6 deletions

diff --git a/libstdc++-v3/include/experimental/internet b/libstdc++-v3/include/experimental/internet
index 5336b8a..cae07f4 100644
--- a/libstdc++-v3/include/experimental/internet
+++ b/libstdc++-v3/include/experimental/internet
@@ -1626,19 +1626,19 @@ namespace ip
    */
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator==(const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     { return __a.address() == __b.address() && __a.port() == __b.port(); }
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator!=(const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     { return !(__a == __b); }
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator< (const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     {
@@ -1647,19 +1647,19 @@ namespace ip
     }
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator> (const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     { return __b < __a; }
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator<=(const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     { return !(__b < __a); }
 
   template<typename _InternetProtocol>
-    inline bool
+    constexpr bool
     operator>=(const basic_endpoint<_InternetProtocol>& __a,
 	       const basic_endpoint<_InternetProtocol>& __b)
     { return !(__a < __b); }
diff --git a/libstdc++-v3/testsuite/experimental/net/internet/endpoint/cons.cc b/libstdc++-v3/testsuite/experimental/net/internet/endpoint/cons.cc
new file mode 100644
index 0000000..1b5c92c
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/net/internet/endpoint/cons.cc
@@ -0,0 +1,66 @@
+// { dg-do run { target c++14 } }
+// { dg-require-effective-target net_ts_ip }
+// { dg-add-options net_ts }
+
+#include <experimental/internet>
+#include <testsuite_hooks.h>
+
+using namespace std::experimental::net;
+
+constexpr void
+test_default()
+{
+  ip::tcp::endpoint t1;
+  VERIFY( t1.protocol() == ip::tcp::v4() );
+  VERIFY( t1.address() == ip::address() );
+  VERIFY( t1.port() == 0 );
+
+  ip::udp::endpoint t2;
+  VERIFY( t2.protocol() == ip::udp::v4() );
+  VERIFY( t2.address() == ip::address() );
+  VERIFY( t2.port() == 0 );
+}
+
+constexpr void
+test_proto()
+{
+  ip::tcp::endpoint t1(ip::tcp::v4(), 22);
+  VERIFY( t1.protocol() == ip::tcp::v4() );
+  VERIFY( t1.address() == ip::address_v4() );
+  VERIFY( t1.port() == 22 );
+
+  ip::tcp::endpoint t2(ip::tcp::v6(), 80);
+  VERIFY( t2.protocol() == ip::tcp::v6() );
+  VERIFY( t2.address() == ip::address_v6() );
+  VERIFY( t2.port() == 80 );
+}
+
+constexpr void
+test_addr()
+{
+  ip::address_v4 a1(ip::address_v4::bytes_type(1, 2, 3, 4));
+  ip::tcp::endpoint t1(a1, 22);
+  VERIFY( t1.protocol() == ip::tcp::v4() );
+  VERIFY( t1.address() == a1 );
+  VERIFY( t1.port() == 22 );
+
+  ip::address_v6 a2(ip::address_v6::bytes_type(21,22,23,24,25,26,27,28,29));
+  ip::tcp::endpoint t2(a2, 80);
+  VERIFY( t2.protocol() == ip::tcp::v6() );
+  VERIFY( t2.address() == a2 );
+  VERIFY( t2.port() == 80 );
+}
+
+int main()
+{
+  test_default();
+  test_proto();
+  test_addr();
+
+  constexpr bool c = [] {
+    test_default();
+    test_proto();
+    test_addr();
+    return true;
+  };
+}