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// Copyright (C) 2015-2023 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-do run { target c++11 } }
// COW strings don't support C++11 allocator propagation:
// { dg-require-effective-target cxx11_abi }
#include <string>
#include <testsuite_hooks.h>
#include <testsuite_allocator.h>
#include <ext/throw_allocator.h>
using C = wchar_t;
const C c = L'a';
using traits = std::char_traits<C>;
using __gnu_test::propagating_allocator;
void test01()
{
typedef propagating_allocator<C, false> alloc_type;
typedef std::basic_string<C, traits, alloc_type> test_type;
test_type v1(alloc_type(1));
v1.assign(1, c);
test_type v2(alloc_type(2));
v2.assign(1, c);
v2 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(2 == v2.get_allocator().get_personality());
v1.assign(1, c);
test_type v3(alloc_type(3));
v3.assign(100, c);
v3 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(3 == v3.get_allocator().get_personality());
v1.assign(100, c);
test_type v4(alloc_type(4));
v4.assign(1, c);
v4 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(4 == v4.get_allocator().get_personality());
v1.assign(100, c);
test_type v5(alloc_type(5));
v5.assign(100, c);
v5 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(5 == v5.get_allocator().get_personality());
}
void test02()
{
typedef propagating_allocator<C, true> alloc_type;
typedef std::basic_string<C, traits, alloc_type> test_type;
test_type v1(alloc_type(1));
v1.assign(1, c);
test_type v2(alloc_type(2));
v2.assign(1, c);
v2 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(1 == v2.get_allocator().get_personality());
v1.assign(1, c);
test_type v3(alloc_type(3));
v3.assign(100, c);
v3 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(1 == v3.get_allocator().get_personality());
v1.assign(100, c);
test_type v4(alloc_type(4));
v4.assign(1, c);
v4 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(1 == v4.get_allocator().get_personality());
v1.assign(100, c);
test_type v5(alloc_type(5));
v5.assign(100, c);
v5 = v1;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(1 == v5.get_allocator().get_personality());
}
void test03()
{
// PR libstdc++/79254
using throw_alloc = __gnu_cxx::throw_allocator_limit<C>;
typedef propagating_allocator<C, true, throw_alloc> alloc_type;
typedef std::basic_string<C, traits, alloc_type> test_type;
alloc_type a1(1), a2(2);
throw_alloc::set_limit(2); // Throw on third allocation (during assignment).
const C* s1 = L"a string that is longer than a small string";
const C* s2 = L"another string that is longer than a small string";
test_type v1(s1, a1);
test_type v2(s2, a2);
bool caught = false;
try {
v1 = v2;
} catch (__gnu_cxx::forced_error&) {
caught = true;
}
VERIFY( caught );
VERIFY( v1 == s1 );
VERIFY( v1.get_allocator() == a1 );
throw_alloc::set_limit(1); // Allow one more allocation (and no more).
test_type v3(s1, a1);
// No allocation when allocators are equal and capacity is sufficient:
VERIFY( v1.capacity() >= v3.size() );
v1 = v3;
// No allocation when the contents fit in the small-string buffer:
v2 = L"sso";
v1 = v2;
VERIFY( v1.get_allocator() == a2 );
}
void test04()
{
// LWG2579
typedef propagating_allocator<C, true> alloc_type;
typedef std::basic_string<C, traits, alloc_type> test_type;
test_type v1(L"tralalala",alloc_type(1));
test_type v2(L"content", alloc_type(2));
test_type v3(L"content2", alloc_type(3));
v1.assign(v2);
v3 = v2;
VERIFY(2 == v1.get_allocator().get_personality());
VERIFY(2 == v3.get_allocator().get_personality());
}
void test05()
{
// LWG2579
typedef propagating_allocator<C, false> alloc_type;
typedef std::basic_string<C, traits, alloc_type> test_type;
test_type v1(L"tralalala",alloc_type(1));
test_type v2(L"content", alloc_type(2));
test_type v3(L"content2", alloc_type(3));
v1.assign(v2);
v3 = v2;
VERIFY(1 == v1.get_allocator().get_personality());
VERIFY(3 == v3.get_allocator().get_personality());
}
int main()
{
test01();
test02();
test03();
test04();
test05();
return 0;
}
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