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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <string>
// basic_string<charT,traits,Allocator>& operator=(charT c); // constexpr since C++20
#include <string>
#include <cassert>
#include "test_macros.h"
#include "min_allocator.h"
template <class S>
TEST_CONSTEXPR_CXX20 void
test(S s1, typename S::value_type s2)
{
typedef typename S::traits_type T;
s1 = s2;
LIBCPP_ASSERT(s1.__invariants());
assert(s1.size() == 1);
assert(T::eq(s1[0], s2));
assert(s1.capacity() >= s1.size());
}
TEST_CONSTEXPR_CXX20 bool test() {
{
typedef std::string S;
test(S(), 'a');
test(S("1"), 'a');
test(S("123456789"), 'a');
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');
}
#if TEST_STD_VER >= 11
{
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
test(S(), 'a');
test(S("1"), 'a');
test(S("123456789"), 'a');
test(S("1234567890123456789012345678901234567890123456789012345678901234567890"), 'a');
}
#endif
return true;
}
int main(int, char**)
{
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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