From d6d4b339f5b77070ee9ae896c2f20ba315b7b7e0 Mon Sep 17 00:00:00 2001 From: Patrick Palka Date: Mon, 2 Mar 2020 16:21:33 -0500 Subject: [PATCH] libstdc++: Add a move-only testsuite iterator type This adds a move-only testsuite iterator wrapper to which will be used in the tests for LWG 3355. The tests for LWG 3389 and 3390 are adjusted to use this new iterator wrapper. libstdc++-v3/ChangeLog: * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy): New testsuite iterator. * testsuite/24_iterators/counted_iterator/lwg3389.cc: Use it. * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise. --- libstdc++-v3/ChangeLog | 5 ++++ .../24_iterators/counted_iterator/lwg3389.cc | 35 ++-------------------- .../24_iterators/move_iterator/lwg3390.cc | 35 ++-------------------- libstdc++-v3/testsuite/util/testsuite_iterators.h | 28 +++++++++++++++++ 4 files changed, 37 insertions(+), 66 deletions(-) diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 45ff06d..1d68f7c 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,5 +1,10 @@ 2020-03-04 Patrick Palka + * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy): + New testsuite iterator. + * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it. + * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise. + * include/bits/ranges_uninitialized.h (uninitialized_copy_fn::operator()): Pass a reference type as the first argument to is_nothrow_assignable_v. diff --git a/libstdc++-v3/testsuite/24_iterators/counted_iterator/lwg3389.cc b/libstdc++-v3/testsuite/24_iterators/counted_iterator/lwg3389.cc index cf74fd4..8b9bf53 100644 --- a/libstdc++-v3/testsuite/24_iterators/counted_iterator/lwg3389.cc +++ b/libstdc++-v3/testsuite/24_iterators/counted_iterator/lwg3389.cc @@ -23,44 +23,13 @@ #include using __gnu_test::test_range; -using __gnu_test::input_iterator_wrapper; - -template -struct move_only_wrapper : input_iterator_wrapper -{ - using input_iterator_wrapper::input_iterator_wrapper; - - move_only_wrapper() - : input_iterator_wrapper(nullptr, nullptr) - { } - - move_only_wrapper(const move_only_wrapper&) = delete; - move_only_wrapper& - operator=(const move_only_wrapper&) = delete; - - move_only_wrapper(move_only_wrapper&&) = default; - move_only_wrapper& - operator=(move_only_wrapper&&) = default; - - using input_iterator_wrapper::operator++; - - move_only_wrapper& - operator++() - { - input_iterator_wrapper::operator++(); - return *this; - } -}; - -static_assert(std::input_iterator>); -static_assert(!std::forward_iterator>); -static_assert(!std::copyable>); +using __gnu_test::input_iterator_wrapper_nocopy; // LWG 3389 void test01() { int x[] = {1,2,3,4}; - test_range rx(x); + test_range rx(x); auto it = std::counted_iterator(rx.begin(), 2); } diff --git a/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3390.cc b/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3390.cc index 1df7cac..7e9f4a0 100644 --- a/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3390.cc +++ b/libstdc++-v3/testsuite/24_iterators/move_iterator/lwg3390.cc @@ -23,44 +23,13 @@ #include using __gnu_test::test_range; -using __gnu_test::input_iterator_wrapper; - -template -struct move_only_wrapper : input_iterator_wrapper -{ - using input_iterator_wrapper::input_iterator_wrapper; - - move_only_wrapper() - : input_iterator_wrapper(nullptr, nullptr) - { } - - move_only_wrapper(const move_only_wrapper&) = delete; - move_only_wrapper& - operator=(const move_only_wrapper&) = delete; - - move_only_wrapper(move_only_wrapper&&) = default; - move_only_wrapper& - operator=(move_only_wrapper&&) = default; - - using input_iterator_wrapper::operator++; - - move_only_wrapper& - operator++() - { - input_iterator_wrapper::operator++(); - return *this; - } -}; - -static_assert(std::input_iterator>); -static_assert(!std::forward_iterator>); -static_assert(!std::copyable>); +using __gnu_test::input_iterator_wrapper_nocopy; // LWG 3390 void test01() { int x[] = {1,2,3,4}; - test_range rx(x); + test_range rx(x); auto it = std::make_move_iterator(rx.begin()); } diff --git a/libstdc++-v3/testsuite/util/testsuite_iterators.h b/libstdc++-v3/testsuite/util/testsuite_iterators.h index 417dff2..e47b2b0 100644 --- a/libstdc++-v3/testsuite/util/testsuite_iterators.h +++ b/libstdc++-v3/testsuite/util/testsuite_iterators.h @@ -674,6 +674,34 @@ namespace __gnu_test { return iter -= n; } }; + // A move-only input iterator type. + template + struct input_iterator_wrapper_nocopy : input_iterator_wrapper + { + using input_iterator_wrapper::input_iterator_wrapper; + + input_iterator_wrapper_nocopy() + : input_iterator_wrapper(nullptr, nullptr) + { } + + input_iterator_wrapper_nocopy(const input_iterator_wrapper_nocopy&) = delete; + input_iterator_wrapper_nocopy& + operator=(const input_iterator_wrapper_nocopy&) = delete; + + input_iterator_wrapper_nocopy(input_iterator_wrapper_nocopy&&) = default; + input_iterator_wrapper_nocopy& + operator=(input_iterator_wrapper_nocopy&&) = default; + + using input_iterator_wrapper::operator++; + + input_iterator_wrapper_nocopy& + operator++() + { + input_iterator_wrapper::operator++(); + return *this; + } + }; + // A type meeting the minimum std::range requirements template class Iter> class test_range -- 2.7.4