425620ccdd
Reviewed By: #libc, ldionne Spies: daltenty, sdasgup3, ldionne, arichardson, MTC, ChuanqiXu, mehdi_amini, shauheen, antiagainst, nicolasvasilache, arpith-jacob, mgester, lucyrfox, aartbik, liufengdb, stephenneuendorffer, Joonsoo, grosul1, Kayjukh, jurahul, msifontes, tatianashp, rdzhabarov, teijeong, cota, dcaballe, Chia-hungDuan, wrengr, wenzhicui, arphaman, Mordante, miscco, Quuxplusone, smeenai, libcxx-commits Differential Revision: https://reviews.llvm.org/D110598
76 lines
1.4 KiB
C++
76 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// XFAIL: LIBCXX-AIX-FIXME
|
|
|
|
// <string>
|
|
|
|
// void shrink_to_fit(); // 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 s)
|
|
{
|
|
typename S::size_type old_cap = s.capacity();
|
|
S s0 = s;
|
|
s.shrink_to_fit();
|
|
LIBCPP_ASSERT(s.__invariants());
|
|
assert(s == s0);
|
|
assert(s.capacity() <= old_cap);
|
|
assert(s.capacity() >= s.size());
|
|
}
|
|
|
|
TEST_CONSTEXPR_CXX20 bool test() {
|
|
{
|
|
typedef std::string S;
|
|
S s;
|
|
test(s);
|
|
|
|
s.assign(10, 'a');
|
|
s.erase(5);
|
|
test(s);
|
|
|
|
s.assign(100, 'a');
|
|
s.erase(50);
|
|
test(s);
|
|
}
|
|
#if TEST_STD_VER >= 11
|
|
{
|
|
typedef std::basic_string<char, std::char_traits<char>, min_allocator<char>> S;
|
|
S s;
|
|
test(s);
|
|
|
|
s.assign(10, 'a');
|
|
s.erase(5);
|
|
test(s);
|
|
|
|
s.assign(100, 'a');
|
|
s.erase(50);
|
|
test(s);
|
|
}
|
|
#endif
|
|
|
|
return true;
|
|
}
|
|
|
|
int main(int, char**)
|
|
{
|
|
test();
|
|
#if TEST_STD_VER > 17
|
|
static_assert(test());
|
|
#endif
|
|
|
|
return 0;
|
|
}
|