PR libstdc++/89460 Fix Networking TS test failures on HP-UX

Check for availability of POSIX sockatmark before using it.

Rename _S_ntoh overloads that are ambiguous when passed an integral type
that is neither uint16_t nor uint32_t.

	PR libstdc++/89460
	* configure.ac: Check for sockatmark.
	* crossconfig.m4: Check for sockatmark.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* include/experimental/internet (address_v4::_S_hton): Rename
	overloaded functions to _S_hton_16 and _S_ntoh_16.
	(address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
	(basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
	* include/experimental/socket (basic_socket::at_mark): Check
	_GLIBCXX_HAVE_SOCKATMARK.

From-SVN: r269588

7 files changed, 84 insertions, 16 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 9c5b1bb..5c0e968 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,17 @@
 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
 
+	PR libstdc++/89460
+	* configure.ac: Check for sockatmark.
+	* crossconfig.m4: Check for sockatmark.
+	* config.h.in: Regenerate.
+	* configure: Regenerate.
+	* include/experimental/internet (address_v4::_S_hton): Rename
+	overloaded functions to _S_hton_16 and _S_ntoh_16.
+	(address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
+	(basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
+	* include/experimental/socket (basic_socket::at_mark): Check
+	_GLIBCXX_HAVE_SOCKATMARK.
+
 	* testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
 	const variables instead of macros.
 
diff --git a/libstdc++-v3/config.h.in b/libstdc++-v3/config.h.in
index 034d91b..3a6f180 100644
--- a/libstdc++-v3/config.h.in
+++ b/libstdc++-v3/config.h.in
@@ -390,6 +390,9 @@
 /* Defined if sleep exists. */
 #undef HAVE_SLEEP
 
+/* Define to 1 if you have the `sockatmark' function. */
+#undef HAVE_SOCKATMARK
+
 /* Define to 1 if you have the `sqrtf' function. */
 #undef HAVE_SQRTF
 
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 8e9f818..7d134a0 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -28446,6 +28446,19 @@ fi
 done
 
 
+  # For Networking TS.
+  for ac_func in sockatmark
+do :
+  ac_fn_c_check_func "$LINENO" "sockatmark" "ac_cv_func_sockatmark"
+if test "x$ac_cv_func_sockatmark" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SOCKATMARK 1
+_ACEOF
+
+fi
+done
+
+
   # For iconv support.
 
       if test "X$prefix" = "XNONE"; then
@@ -53641,6 +53654,17 @@ _ACEOF
 fi
 done
 
+    for ac_func in sockatmark
+do :
+  ac_fn_c_check_func "$LINENO" "sockatmark" "ac_cv_func_sockatmark"
+if test "x$ac_cv_func_sockatmark" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SOCKATMARK 1
+_ACEOF
+
+fi
+done
+
     ;;
 
   *-fuchsia*)
@@ -60268,6 +60292,17 @@ _ACEOF
 fi
 done
 
+    for ac_func in sockatmark
+do :
+  ac_fn_c_check_func "$LINENO" "sockatmark" "ac_cv_func_sockatmark"
+if test "x$ac_cv_func_sockatmark" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SOCKATMARK 1
+_ACEOF
+
+fi
+done
+
 
 
 
@@ -66592,6 +66627,17 @@ _ACEOF
 fi
 done
 
+    for ac_func in sockatmark
+do :
+  ac_fn_c_check_func "$LINENO" "sockatmark" "ac_cv_func_sockatmark"
+if test "x$ac_cv_func_sockatmark" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_SOCKATMARK 1
+_ACEOF
+
+fi
+done
+
     ;;
   *-qnx6.1* | *-qnx6.2*)
     SECTION_FLAGS='-ffunction-sections -fdata-sections'
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index 39b0b90..dadd882 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -268,6 +268,9 @@ if $GLIBCXX_IS_NATIVE; then
   # C11 functions for C++17 library
   AC_CHECK_FUNCS(timespec_get)
 
+  # For Networking TS.
+  AC_CHECK_FUNCS(sockatmark)
+
   # For iconv support.
   AM_ICONV
 
diff --git a/libstdc++-v3/crossconfig.m4 b/libstdc++-v3/crossconfig.m4
index 4a30300..344eec0 100644
--- a/libstdc++-v3/crossconfig.m4
+++ b/libstdc++-v3/crossconfig.m4
@@ -136,6 +136,7 @@ case "${host}" in
     AC_CHECK_FUNCS(__cxa_thread_atexit)
     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
     AC_CHECK_FUNCS(timespec_get)
+    AC_CHECK_FUNCS(sockatmark)
     ;;
 
   *-fuchsia*)
@@ -196,6 +197,7 @@ case "${host}" in
     AC_CHECK_FUNCS(__cxa_thread_atexit_impl)
     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
     AC_CHECK_FUNCS(timespec_get)
+    AC_CHECK_FUNCS(sockatmark)
     AM_ICONV
     ;;
   *-mingw32*)
@@ -224,6 +226,7 @@ case "${host}" in
     fi
     AC_CHECK_FUNCS(aligned_alloc posix_memalign memalign _aligned_malloc)
     AC_CHECK_FUNCS(timespec_get)
+    AC_CHECK_FUNCS(sockatmark)
     ;;
   *-qnx6.1* | *-qnx6.2*)
     SECTION_FLAGS='-ffunction-sections -fdata-sections'
diff --git a/libstdc++-v3/include/experimental/internet b/libstdc++-v3/include/experimental/internet
index 80682ef..467bdfd 100644
--- a/libstdc++-v3/include/experimental/internet
+++ b/libstdc++-v3/include/experimental/internet
@@ -158,7 +158,7 @@ namespace ip
     { }
 
     explicit constexpr
-    address_v4(uint_type __val) : _M_addr(_S_hton(__val))
+    address_v4(uint_type __val) : _M_addr(_S_hton_32(__val))
     {
 #if UINT_LEAST32_MAX > 0xFFFFFFFF
       if (__val > 0xFFFFFFFF)
@@ -191,7 +191,8 @@ namespace ip
       };
     }
 
-    constexpr uint_type to_uint() const noexcept { return _S_ntoh(_M_addr); }
+    constexpr uint_type
+    to_uint() const noexcept { return _S_ntoh_32(_M_addr); }
 
 #ifdef _GLIBCXX_HAVE_ARPA_INET_H
     template<typename _Allocator = allocator<char>>
@@ -224,22 +225,22 @@ namespace ip
     friend address_v4 make_address_v4(const char*, error_code&) noexcept;
 
 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
-    static constexpr uint16_t _S_hton(uint16_t __h) { return __h; }
-    static constexpr uint16_t _S_ntoh(uint16_t __n) { return __n; }
-    static constexpr uint32_t _S_hton(uint32_t __h) { return __h; }
-    static constexpr uint32_t _S_ntoh(uint32_t __n) { return __n; }
+    static constexpr uint16_t _S_hton_16(uint16_t __h) { return __h; }
+    static constexpr uint16_t _S_ntoh_16(uint16_t __n) { return __n; }
+    static constexpr uint32_t _S_hton_32(uint32_t __h) { return __h; }
+    static constexpr uint32_t _S_ntoh_32(uint32_t __n) { return __n; }
 #else
     static constexpr uint16_t
-    _S_hton(uint16_t __h) { return __builtin_bswap16(__h); }
+    _S_hton_16(uint16_t __h) { return __builtin_bswap16(__h); }
 
     static constexpr uint16_t
-    _S_ntoh(uint16_t __n) { return __builtin_bswap16(__n); }
+    _S_ntoh_16(uint16_t __n) { return __builtin_bswap16(__n); }
 
     static constexpr uint32_t
-    _S_hton(uint32_t __h) { return __builtin_bswap32(__h); }
+    _S_hton_32(uint32_t __h) { return __builtin_bswap32(__h); }
 
     static constexpr uint32_t
-    _S_ntoh(uint32_t __n) { return __builtin_bswap32(__n); }
+    _S_ntoh_32(uint32_t __n) { return __builtin_bswap32(__n); }
 #endif
 
     in_addr_t _M_addr; // network byte order
@@ -1396,7 +1397,7 @@ namespace ip
 			  || __proto == protocol_type::v6());
 
 	_M_data._M_v4.sin_family = __proto.family();
-	_M_data._M_v4.sin_port = address_v4::_S_hton(__port_num);
+	_M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num);
       }
 
       constexpr
@@ -1407,14 +1408,14 @@ namespace ip
 	if (__addr.is_v4())
 	  {
 	    _M_data._M_v4.sin_family = protocol_type::v4().family();
-	    _M_data._M_v4.sin_port = address_v4::_S_hton(__port_num);
+	    _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num);
 	    _M_data._M_v4.sin_addr.s_addr = __addr._M_v4._M_addr;
 	  }
 	else
 	  {
 	    _M_data._M_v6 = {};
 	    _M_data._M_v6.sin6_family = protocol_type::v6().family();
-	    _M_data._M_v6.sin6_port = address_v4::_S_hton(__port_num);
+	    _M_data._M_v6.sin6_port = address_v4::_S_hton_16(__port_num);
 	    __builtin_memcpy(_M_data._M_v6.sin6_addr.s6_addr,
 			     __addr._M_v6._M_bytes.data(), 16);
 	    _M_data._M_v6.sin6_scope_id = __addr._M_v6._M_scope_id;
@@ -1466,11 +1467,11 @@ namespace ip
 
       constexpr port_type
       port() const noexcept
-      { return address_v4::_S_ntoh(_M_data._M_v4.sin_port); }
+      { return address_v4::_S_ntoh_16(_M_data._M_v4.sin_port); }
 
       void
       port(port_type __port_num) noexcept
-      { _M_data._M_v4.sin_port = address_v4::_S_hton(__port_num); }
+      { _M_data._M_v4.sin_port = address_v4::_S_hton_16(__port_num); }
 
       void* data() noexcept { return &_M_data; }
       const void* data() const noexcept { return &_M_data; }
diff --git a/libstdc++-v3/include/experimental/socket b/libstdc++-v3/include/experimental/socket
index a2427f9..e806265 100644
--- a/libstdc++-v3/include/experimental/socket
+++ b/libstdc++-v3/include/experimental/socket
@@ -794,7 +794,7 @@ inline namespace v1
       bool
       at_mark(error_code& __ec) const
       {
-#ifdef _GLIBCXX_HAVE_SYS_SOCKET_H
+#ifdef _GLIBCXX_HAVE_SOCKATMARK
 	const int __result = ::sockatmark(native_handle());
 	if (__result == -1)
 	  {