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 // XFAIL: LIBCXX-AIX-FIXME 10 11 // <string> 12 13 // basic_string<charT,traits,Allocator>& operator=(charT c); // constexpr since C++20 14 15 #include <string> 16 #include <cassert> 17 18 #include "test_macros.h" 19 #include "min_allocator.h" 20 21 template <class S> 22 TEST_CONSTEXPR_CXX20 void 23 test(S s1, typename S::value_type s2) 24 { 25 typedef typename S::traits_type T; 26 s1 = s2; 27 LIBCPP_ASSERT(s1.__invariants()); 28 assert(s1.size() == 1); 29 assert(T::eq(s1[0], s2)); 30 assert(s1.capacity() >= s1.size()); 31 } 32 33 TEST_CONSTEXPR_CXX20 bool test() { 34 { 35 typedef std::string S; 36 test(S(), 'a'); 37 test(S("1"), 'a'); 38 test(S("123456789"), 'a'); 39 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a'); 40 } 41 #if TEST_STD_VER >= 11 42 { 43 typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S; 44 test(S(), 'a'); 45 test(S("1"), 'a'); 46 test(S("123456789"), 'a'); 47 test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a'); 48 } 49 #endif 50 51 return true; 52 } 53 54 int main(int, char**) 55 { 56 test(); 57 #if TEST_STD_VER > 17 58 static_assert(test()); 59 #endif 60 61 return 0; 62 } 63