1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // <algorithm> 10 11 // UNSUPPORTED: c++03, c++11, c++14 12 13 // UNSUPPORTED: libcpp-has-no-incomplete-pstl 14 15 // template<class ExecutionPolicy, class ForwardIterator, class T> 16 // void fill(ExecutionPolicy&& exec, 17 // ForwardIterator first, ForwardIterator last, const T& value); 18 19 #include <algorithm> 20 #include <cassert> 21 #include <vector> 22 23 #include "test_macros.h" 24 #include "test_execution_policies.h" 25 #include "test_iterators.h" 26 27 EXECUTION_POLICY_SFINAE_TEST(fill); 28 29 static_assert(sfinae_test_fill<int, int*, int*, bool (*)(int)>); 30 static_assert(!sfinae_test_fill<std::execution::parallel_policy, int*, int*, int>); 31 32 template <class Iter> 33 struct Test { 34 template <class Policy> 35 void operator()(Policy&& policy) { 36 { // simple test 37 int a[4]; 38 std::fill(policy, Iter(std::begin(a)), Iter(std::end(a)), 33); 39 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; })); 40 } 41 { // check that an empty range works 42 int a[1] = {2}; 43 std::fill(policy, Iter(std::begin(a)), Iter(std::begin(a)), 33); 44 assert(a[0] == 2); 45 } 46 { // check that a one-element range works 47 int a[1]; 48 std::fill(policy, Iter(std::begin(a)), Iter(std::end(a)), 33); 49 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; })); 50 } 51 { // check that a two-element range works 52 int a[2]; 53 std::fill(policy, Iter(std::begin(a)), Iter(std::end(a)), 33); 54 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; })); 55 } 56 { // check that a large range works 57 std::vector<int> a(234, 2); 58 std::fill(policy, Iter(std::data(a)), Iter(std::data(a) + std::size(a)), 33); 59 assert(std::all_of(std::begin(a), std::end(a), [](int i) { return i == 33; })); 60 } 61 } 62 }; 63 64 #ifndef TEST_HAS_NO_EXCEPTIONS 65 struct ThrowOnCopy { 66 ThrowOnCopy& operator=(const ThrowOnCopy&) { throw int{}; } 67 }; 68 #endif 69 70 int main(int, char**) { 71 types::for_each(types::forward_iterator_list<int*>{}, TestIteratorWithPolicies<Test>{}); 72 73 #ifndef TEST_HAS_NO_EXCEPTIONS 74 std::set_terminate(terminate_successful); 75 ThrowOnCopy a[2]; 76 try { 77 (void)std::fill(std::execution::par, std::begin(a), std::end(a), ThrowOnCopy{}); 78 } catch (int) { 79 assert(false); 80 } 81 #endif 82 83 return 0; 84 } 85