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// Copyright (C) 2015-2022 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 } }
#include <vector>
#include <testsuite_hooks.h>
template<typename T>
void check(const T& t)
{
for (auto& e : t)
VERIFY( !e.moved_from);
}
// This type is CopyInsertable into std::vector<Bomb> so push_back should
// have the strong exception-safety guarantee.
struct Bomb
{
Bomb() = default;
Bomb(const Bomb& b)
: armed(b.armed)
{
tick();
}
Bomb(Bomb&& b) noexcept(false)
: armed(b.armed)
{
tick();
b.moved_from = true;
}
// std::vector in GCC 4.x tries to use this constructor
template<typename T> Bomb(T&) = delete;
bool moved_from = false;
bool armed = true;
private:
void tick()
{
if (armed && ticks++)
throw 1;
}
static int ticks;
};
int Bomb::ticks = 0;
void test01()
{
std::vector<Bomb> v(2); // fill with armed bombs
v.resize(v.capacity()); // ensure no unused capacity
check(v); // sanity check
try {
Bomb defused;
// don't want any copies/moves of this object to throw
defused.armed = false;
// insert new element, existing elements will be relocated and explode
v.push_back(defused);
VERIFY(false); // should be unreachable
} catch (int) {
check(v); // make sure no elements have been moved from
}
}
int main()
{
test01();
}
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