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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>
// size_type capacity() const; // constexpr since C++20
#include <string>
#include <cassert>
#include "test_allocator.h"
#include "min_allocator.h"
#include "asan_testing.h"
#include "test_macros.h"
template <class S>
TEST_CONSTEXPR_CXX20 void test_invariant(S s, test_allocator_statistics& alloc_stats) {
alloc_stats.throw_after = 0;
#ifndef TEST_HAS_NO_EXCEPTIONS
try
#endif
{
while (s.size() < s.capacity())
s.push_back(typename S::value_type());
assert(s.size() == s.capacity());
LIBCPP_ASSERT(is_string_asan_correct(s));
}
#ifndef TEST_HAS_NO_EXCEPTIONS
catch (...) {
assert(false);
}
#endif
alloc_stats.throw_after = INT_MAX;
}
template <class Alloc>
TEST_CONSTEXPR_CXX20 void test_string(const Alloc& a) {
using S = std::basic_string<char, std::char_traits<char>, Alloc>;
{
S const s((Alloc(a)));
assert(s.capacity() >= 0);
LIBCPP_ASSERT(is_string_asan_correct(s));
}
{
S const s(3, 'x', Alloc(a));
assert(s.capacity() >= 3);
LIBCPP_ASSERT(is_string_asan_correct(s));
}
#if TEST_STD_VER >= 11
// Check that we perform SSO
{
S const s;
assert(s.capacity() > 0);
ASSERT_NOEXCEPT(s.capacity());
LIBCPP_ASSERT(is_string_asan_correct(s));
}
#endif
}
TEST_CONSTEXPR_CXX20 bool test() {
test_string(std::allocator<char>());
test_string(test_allocator<char>());
test_string(test_allocator<char>(3));
test_string(min_allocator<char>());
test_string(safe_allocator<char>());
{
test_allocator_statistics alloc_stats;
typedef std::basic_string<char, std::char_traits<char>, test_allocator<char> > S;
S s((test_allocator<char>(&alloc_stats)));
test_invariant(s, alloc_stats);
LIBCPP_ASSERT(is_string_asan_correct(s));
s.assign(10, 'a');
s.erase(5);
test_invariant(s, alloc_stats);
LIBCPP_ASSERT(is_string_asan_correct(s));
s.assign(100, 'a');
s.erase(50);
test_invariant(s, alloc_stats);
LIBCPP_ASSERT(is_string_asan_correct(s));
}
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER >= 20
static_assert(test());
#endif
return 0;
}
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