* include/bits/random.h (seed_seq::param): Fix non-reserved name.
        * include/experimental/type_traits (is_detected_exact)
        (is_detected_exact_v): Likewise.
        * include/pstl/execution_defs.h (is_execution_policy)
        (is_execution_policy_v, __enable_if_execution_policy): Likewise.
        * include/pstl/execution_impl.h (__policy_traits): Likewise.
        * testsuite/17_intro/names.cc: Check for more non-reserved names.
        * testsuite/experimental/names.cc: New test.

Tested powerpc64le-linux, committed to trunk.

Tom, two pieces of this need to be fixed in upstream PSTL too.


commit 95d3f45c61c52c82d0a0faa3ecd55394a114c5ec
Author: Jonathan Wakely <jwak...@redhat.com>
Date:   Fri May 17 13:17:00 2019 +0100

    Fix uses of non-reserved names for template parameters
    
            * include/bits/random.h (seed_seq::param): Fix non-reserved name.
            * include/experimental/type_traits (is_detected_exact)
            (is_detected_exact_v): Likewise.
            * include/pstl/execution_defs.h (is_execution_policy)
            (is_execution_policy_v, __enable_if_execution_policy): Likewise.
            * include/pstl/execution_impl.h (__policy_traits): Likewise.
            * testsuite/17_intro/names.cc: Check for more non-reserved names.
            * testsuite/experimental/names.cc: New test.

diff --git a/libstdc++-v3/include/bits/random.h 
b/libstdc++-v3/include/bits/random.h
index 3f5ae53086e..2b1df4cb59e 100644
--- a/libstdc++-v3/include/bits/random.h
+++ b/libstdc++-v3/include/bits/random.h
@@ -6080,9 +6080,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     size_t size() const noexcept
     { return _M_v.size(); }
 
-    template<typename OutputIterator>
+    template<typename _OutputIterator>
       void
-      param(OutputIterator __dest) const
+      param(_OutputIterator __dest) const
       { std::copy(_M_v.begin(), _M_v.end(), __dest); }
 
     // no copy functions
diff --git a/libstdc++-v3/include/experimental/type_traits 
b/libstdc++-v3/include/experimental/type_traits
index c2b2dcc2739..2403bd24223 100644
--- a/libstdc++-v3/include/experimental/type_traits
+++ b/libstdc++-v3/include/experimental/type_traits
@@ -252,12 +252,12 @@ template<typename _Default, template<typename...> class 
_Op, typename... _Args>
 template<typename _Default, template<typename...> class _Op, typename... _Args>
   using detected_or_t = typename detected_or<_Default, _Op, _Args...>::type;
 
-template<typename Expected, template<typename...> class _Op, typename... _Args>
-  using is_detected_exact = is_same<Expected, detected_t<_Op, _Args...>>;
+template<typename _Expected, template<typename...> class _Op, typename... 
_Args>
+  using is_detected_exact = is_same<_Expected, detected_t<_Op, _Args...>>;
 
-template<typename Expected, template<typename...> class _Op, typename... _Args>
+template<typename _Expected, template<typename...> class _Op, typename... 
_Args>
   constexpr bool is_detected_exact_v
-    = is_detected_exact<Expected, _Op, _Args...>::value;
+    = is_detected_exact<_Expected, _Op, _Args...>::value;
 
 template<typename _To, template<typename...> class _Op, typename... _Args>
   using is_detected_convertible
diff --git a/libstdc++-v3/include/pstl/execution_defs.h 
b/libstdc++-v3/include/pstl/execution_defs.h
index 9a4b49bd46a..1a551c7871c 100644
--- a/libstdc++-v3/include/pstl/execution_defs.h
+++ b/libstdc++-v3/include/pstl/execution_defs.h
@@ -117,7 +117,7 @@ constexpr parallel_unsequenced_policy par_unseq{};
 constexpr unsequenced_policy unseq{};
 
 // 2.3, Execution policy type trait
-template <class T>
+template <class _Tp>
 struct is_execution_policy : std::false_type
 {
 };
@@ -142,8 +142,8 @@ struct 
is_execution_policy<__pstl::execution::unsequenced_policy> : std::true_ty
 };
 
 #if __PSTL_CPP14_VARIABLE_TEMPLATES_PRESENT
-template <class T>
-constexpr bool is_execution_policy_v = 
__pstl::execution::is_execution_policy<T>::value;
+template <class _Tp>
+constexpr bool is_execution_policy_v = 
__pstl::execution::is_execution_policy<_Tp>::value;
 #endif
 
 } // namespace v1
@@ -151,10 +151,10 @@ constexpr bool is_execution_policy_v = 
__pstl::execution::is_execution_policy<T>
 
 namespace __internal
 {
-template <class ExecPolicy, class T>
+template <class _ExecPolicy, class _Tp>
 using __enable_if_execution_policy =
-    typename std::enable_if<__pstl::execution::is_execution_policy<typename 
std::decay<ExecPolicy>::type>::value,
-                            T>::type;
+    typename std::enable_if<__pstl::execution::is_execution_policy<typename 
std::decay<_ExecPolicy>::type>::value,
+                            _Tp>::type;
 } // namespace __internal
 
 } // namespace __pstl
diff --git a/libstdc++-v3/include/pstl/execution_impl.h 
b/libstdc++-v3/include/pstl/execution_impl.h
index 8ee5fa062a8..cbebbbd4239 100644
--- a/libstdc++-v3/include/pstl/execution_impl.h
+++ b/libstdc++-v3/include/pstl/execution_impl.h
@@ -66,7 +66,7 @@ struct __is_random_access_iterator<_IteratorType>
 };
 
 /* policy */
-template <typename Policy>
+template <typename _Policy>
 struct __policy_traits
 {
 };
diff --git a/libstdc++-v3/testsuite/17_intro/names.cc 
b/libstdc++-v3/testsuite/17_intro/names.cc
index c3c753b35e5..20123a41287 100644
--- a/libstdc++-v3/testsuite/17_intro/names.cc
+++ b/libstdc++-v3/testsuite/17_intro/names.cc
@@ -19,7 +19,6 @@
 
 // Define macros for some common variables names that we must not use for
 // naming variables, parameters etc. in the library.
-#define tmp (
 #define A (
 #define B (
 #define C (
@@ -99,6 +98,78 @@
 #define y (
 #define z (
 
+#define tmp (
+
+#if __cplusplus < 201703L
+// <charconv> defines to_chars_result::ptr and to_chars_result::ec
+#define ec (
+#define ptr (
+#endif
+
+// Common template parameter names
+#define OutputIterator         OutputIterator is not a reserved name
+#define InputIterator          InputIterator is not a reserved name
+#define ForwardIterator                ForwardIterator is not a reserved name
+#define BidirectionalIterator  BidirectionalIterator is not a reserved name
+#define RandomAccessIterator   RandomAccessIterator is not a reserved name
+#define RandomAccessOutputIterator     RandomAccessOutputIterator is not a 
reserved name
+#define RAIter                 RAIter is not a reserved name
+#define FwdIter                        FwdIter is not a reserved name
+#define OutIter                        OutIter is not a reserved name
+#define InIter                 InIter is not a reserved name
+
+#define Alloc                  Alloc is not a reserved name
+#define BinaryFunction1                BinaryFunction1 is not a reserved name
+#define BinaryFunction2                BinaryFunction2 is not a reserved name
+#define Char                   Char is not a reserved name
+#define CharT                  CharT is not a reserved name
+#define Cmp                    Cmp is not a reserved name
+#define Compare                        Compare is not a reserved name
+#define Const_Iterator         Const_Iterator is not a reserved name
+#define Const_Key_Reference    Const_Key_Reference is not a reserved name
+#define Const_Node_Iter                Const_Node_Iter is not a reserved name
+#define Const_Pointer          Const_Pointer is not a reserved name
+#define Const_Reference                Const_Reference is not a reserved name
+#define Data                   Data is not a reserved name
+#define DiffType               DiffType is not a reserved name
+#define Eq                     Eq is not a reserved name
+#define ExecPolicy             ExecPolicy is not a reserved name
+#define Expected               Expected is not a reserved name
+#define External_Load_Access   External_Load_Access is not a reserved name
+#define External_Size_Access   External_Size_Access is not a reserved name
+#define Fn                     Fn is not a reserved name
+#define Function               Function is not a reserved name
+#define Functor                        Functor is not a reserved name
+#define Hash                   Hash is not a reserved name
+#define H1                     H1 is not a reserved name
+#define H2                     H2 is not a reserved name
+#define Head                   Head is not a reserved name
+#define It                     It is not a reserved name
+#define Iter                   Iter is not a reserved name
+#define Iterator               Iterator is not a reserved name
+#define Key                    Key is not a reserved name
+#define Mapped                 Mapped is not a reserved name
+#define Node                   Node is not a reserved name
+#define Node_iter              Node_iter is not a reserved name
+#define Node_ptr               Node_ptr is not a reserved name
+#define Overflow               Overflow is not a reserved name
+#define Pointer                        Pointer is not a reserved name
+#define Policy                 Policy is not a reserved name
+#define Pred                   Pred is not a reserved name
+#define Ptr                    Ptr is not a reserved name
+#define Reference              Reference is not a reserved name
+#define Seq                    Seq is not a reserved name
+#define Seq_RAIter             Seq_RAIter is not a reserved name
+#define Series                 Series is not a reserved name
+#define Set                    Set is not a reserved name
+#define String                 String is not a reserved name
+#define Tp                     Tp is not a reserved name
+#define Traits                 Traits is not a reserved name
+#define Type                   Type is not a reserved name
+#define Value                  Value is not a reserved name
+#define ValueT                 ValueT is not a reserved name
+#define ValueType              ValueType is not a reserved name
+
 #ifdef _AIX
 // See https://gcc.gnu.org/ml/libstdc++/2017-03/msg00015.html
 #undef f
diff --git a/libstdc++-v3/testsuite/experimental/names.cc 
b/libstdc++-v3/testsuite/experimental/names.cc
new file mode 100644
index 00000000000..e97baf3d5bd
--- /dev/null
+++ b/libstdc++-v3/testsuite/experimental/names.cc
@@ -0,0 +1,64 @@
+// Copyright (C) 2017-2019 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 compile }
+
+// Define macros for some common variables names that we must not use for
+// naming variables, parameters etc. in the library.
+
+#include "../17_intro/names.cc"
+// Filesystem
+#include <experimental/filesystem>
+// Library Fundamentals
+#include <experimental/algorithm>
+#include <experimental/any>
+#include <experimental/array>
+#include <experimental/chrono>
+#include <experimental/deque>
+#include <experimental/forward_list>
+#include <experimental/functional>
+#include <experimental/iterator>
+#include <experimental/list>
+#include <experimental/map>
+#include <experimental/memory>
+#include <experimental/memory_resource>
+#include <experimental/numeric>
+#include <experimental/optional>
+#include <experimental/propagate_const>
+#include <experimental/random>
+#include <experimental/ratio>
+#include <experimental/regex>
+#include <experimental/set>
+#include <experimental/source_location>
+#include <experimental/string>
+#include <experimental/string_view>
+#include <experimental/system_error>
+#include <experimental/tuple>
+#include <experimental/type_traits>
+#include <experimental/unordered_map>
+#include <experimental/unordered_set>
+#include <experimental/utility>
+#include <experimental/vector>
+// Networking
+#include <experimental/buffer>
+#include <experimental/internet>
+#include <experimental/io_context>
+#include <experimental/net>
+#include <experimental/netfwd>
+#include <experimental/socket>
+#include <experimental/timer>
+#include <experimental/executor>

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