//===----------------------------------------------------------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // Ensure that all the elements in the vector are destroyed, especially when reallocating the internal buffer // UNSUPPORTED: c++03 #include #include #include #include #include #include "test_macros.h" struct DestroyTracker { TEST_CONSTEXPR_CXX20 DestroyTracker(std::vector& vec) : vec_(&vec), index_(vec.size()) { vec.push_back(false); } TEST_CONSTEXPR_CXX20 DestroyTracker(const DestroyTracker& other) : vec_(other.vec_), index_(vec_->size()) { vec_->push_back(false); } TEST_CONSTEXPR_CXX20 DestroyTracker& operator=(const DestroyTracker&) { return *this; } TEST_CONSTEXPR_CXX20 ~DestroyTracker() { (*vec_)[index_] = true; } std::vector* vec_; size_t index_; }; template TEST_CONSTEXPR_CXX20 void test(Operation operation) { std::vector all_destroyed; { std::vector v; for (size_t i = 0; i != 100; ++i) operation(v, all_destroyed); } assert(std::all_of(all_destroyed.begin(), all_destroyed.end(), [](bool b) { return b; })); } TEST_CONSTEXPR_CXX20 bool test() { test([](std::vector& vec, std::vector& tracker) { vec.emplace_back(tracker); }); test([](std::vector& vec, std::vector& tracker) { vec.push_back(tracker); }); test([](std::vector& vec, std::vector& tracker) { vec.emplace(vec.begin(), tracker); }); test([](std::vector& vec, std::vector& tracker) { vec.insert(vec.begin(), tracker); }); test([](std::vector& vec, std::vector& tracker) { vec.resize(vec.size() + 1, tracker); }); #if TEST_STD_VER >= 23 test([](std::vector& vec, std::vector& tracker) { vec.insert_range(vec.begin(), std::array{tracker, tracker}); }); test([](std::vector& vec, std::vector& tracker) { vec.append_range(std::array{tracker, tracker}); }); #endif return true; } int main() { test(); #if TEST_STD_VER >= 20 static_assert(test()); #endif }