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 // <string> 10 11 // void clear(); // constexpr since C++20 12 13 #include <string> 14 #include <cassert> 15 16 #include "test_macros.h" 17 #include "min_allocator.h" 18 #include "asan_testing.h" 19 20 template <class S> test(S s)21TEST_CONSTEXPR_CXX20 void test(S s) { 22 s.clear(); 23 assert(s.size() == 0); 24 LIBCPP_ASSERT(is_string_asan_correct(s)); 25 } 26 27 template <class S> test_string()28TEST_CONSTEXPR_CXX20 void test_string() { 29 S s; 30 test(s); 31 LIBCPP_ASSERT(is_string_asan_correct(s)); 32 33 s.assign(10, 'a'); 34 s.erase(5); 35 LIBCPP_ASSERT(is_string_asan_correct(s)); 36 test(s); 37 LIBCPP_ASSERT(is_string_asan_correct(s)); 38 39 s.assign(100, 'a'); 40 s.erase(50); 41 LIBCPP_ASSERT(is_string_asan_correct(s)); 42 test(s); 43 LIBCPP_ASSERT(is_string_asan_correct(s)); 44 } 45 test()46TEST_CONSTEXPR_CXX20 bool test() { 47 test_string<std::string>(); 48 #if TEST_STD_VER >= 11 49 test_string<std::basic_string<char, std::char_traits<char>, min_allocator<char>>>(); 50 test_string<std::basic_string<char, std::char_traits<char>, safe_allocator<char>>>(); 51 #endif 52 53 return true; 54 } 55 main(int,char **)56int main(int, char**) { 57 test(); 58 #if TEST_STD_VER > 17 59 static_assert(test()); 60 #endif 61 62 return 0; 63 } 64