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// { dg-do compile { target c++23 } }
#include <memory>
#include <testsuite_hooks.h>
int counter = 0;
void
test_unique_ptr()
{
std::unique_ptr<int> up(new int(1));
{
auto op = std::out_ptr(up);
VERIFY( up == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(2);
const auto& cop = op;
VERIFY( static_cast<int**>(cop) == static_cast<int**>(op) );
}
VERIFY( *up == 2 );
{
std::default_delete<int> d;
auto op = std::out_ptr(up, d);
VERIFY( up == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(3);
const auto& cop = op;
VERIFY( static_cast<int**>(cop) == static_cast<int**>(op) );
}
VERIFY( *up == 3 );
struct D
{
explicit D(int id) : id(id) { }
void operator()(long* p) const { ++counter; delete p; }
int id;
};
counter = 0;
std::unique_ptr<long, D> upd(new long(1), D(11));
{
auto op = std::out_ptr(upd);
VERIFY( counter == 1 );
VERIFY( upd == nullptr );
long** p = op;
VERIFY( *p == nullptr );
*p = new long(4);
const auto& cop = op;
VERIFY( static_cast<long**>(cop) == static_cast<long**>(op) );
}
VERIFY( *upd == 4 );
VERIFY( upd.get_deleter().id == 11 );
VERIFY( counter == 1 );
{
D d(33);
auto op = std::out_ptr(upd, d);
VERIFY( counter == 2 );
VERIFY( upd == nullptr );
long** p = op;
VERIFY( *p == nullptr );
const auto& cop = op;
VERIFY( static_cast<long**>(cop) == static_cast<long**>(op) );
}
VERIFY( upd == nullptr );
VERIFY( upd.get_deleter().id == 11 ); // Deleter not replaced if p is null.
VERIFY( counter == 2 );
{
D d(33);
auto op = std::out_ptr(upd, d);
VERIFY( counter == 2 );
VERIFY( upd == nullptr );
long** p = op;
VERIFY( *p == nullptr );
*p = new long(5);
}
VERIFY( *upd == 5 );
VERIFY( upd.get_deleter().id == 33 );
VERIFY( counter == 2 );
struct Base { };
struct Derived : Base
{
Derived(int id) : id(id) { }
int id;
};
std::unique_ptr<Derived> upbd(new Derived(1));
{
auto op = std::out_ptr<Base*>(upbd);
Base** bpp = op;
VERIFY( *bpp == nullptr );
*bpp = new Derived(2);
const auto& cop = op;
VERIFY( static_cast<Base**>(cop) == static_cast<Base**>(op) );
}
VERIFY( upbd->id == 2 );
}
void deleter_function(float* p) { delete p; }
void
test_shared_ptr()
{
using DD = std::default_delete<int>;
std::shared_ptr<int> sp(new int(1));
{
auto op = std::out_ptr(sp, DD{});
VERIFY( sp == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(2);
const auto& cop = op;
VERIFY( static_cast<int**>(cop) == static_cast<int**>(op) );
}
VERIFY( *sp == 2 );
{
auto op = std::out_ptr(sp, DD{});
VERIFY( sp == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(3);
}
VERIFY( *sp == 3 );
struct D
{
explicit D(int id) : id(id) { }
void operator()(long* p) const { ++counter; delete p; }
int id;
};
counter = 0;
std::shared_ptr<long> spd(new long(1), D(11));
{
auto op = std::out_ptr(spd, D(22));
VERIFY( counter == 1 );
VERIFY( spd == nullptr );
long** p = op;
VERIFY( *p == nullptr );
*p = new long(5);
}
VERIFY( counter == 1 );
VERIFY( *spd == 5 );
VERIFY( std::get_deleter<D>(spd)->id == 22 );
struct Base { };
struct Derived : Base
{
Derived(int id) : id(id) { }
int id;
};
std::shared_ptr<Derived> spbd(new Derived(1));
{
auto op = std::out_ptr<Base*>(spbd, std::default_delete<Derived>());
Base** bpp = op;
VERIFY( *bpp == nullptr );
*bpp = new Derived(2);
}
VERIFY( spbd->id == 2 );
std::shared_ptr<float> spf;
{
auto op = std::out_ptr(spf, deleter_function);
float** fpp = op;
*fpp = new float(0.5);
}
VERIFY( std::get_deleter<void(*)(float*)>(spf) != nullptr );
VERIFY( *std::get_deleter<void(*)(float*)>(spf) == &deleter_function );
VERIFY( *spf == 0.5 );
}
void
test_custom_ptr()
{
struct UPtr : std::unique_ptr<int>
{
using std::unique_ptr<int>::unique_ptr;
};
UPtr up(new int(1));
{
auto op = std::out_ptr(up);
VERIFY( up == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(2);
const auto& cop = op;
VERIFY( static_cast<int**>(cop) == static_cast<int**>(op) );
}
VERIFY( *up == 2 );
{
auto op = std::out_ptr(up, std::default_delete<int>{});
VERIFY( up == nullptr );
int** p = op;
VERIFY( *p == nullptr );
*p = new int(3);
}
VERIFY( *up == 3 );
struct D
{
explicit D(int id) : id(id) { }
void operator()(long* p) const { ++counter; delete p; }
int id;
};
counter = 0;
struct UDPtr : std::unique_ptr<long, D>
{
using std::unique_ptr<long, D>::unique_ptr;
};
UDPtr upd(new long(1), D(11));
{
auto op = std::out_ptr(upd);
VERIFY( counter == 1 );
VERIFY( upd == nullptr );
long** p = op;
VERIFY( *p == nullptr );
*p = new long(4);
}
VERIFY( counter == 1 );
VERIFY( *upd == 4 );
VERIFY( upd.get_deleter().id == 11 );
{
auto op = std::out_ptr(upd, D(22));
VERIFY( upd == nullptr );
VERIFY( counter == 2 );
long** p = op;
VERIFY( *p == nullptr );
*p = new long(5);
}
VERIFY( counter == 2 );
VERIFY( *upd == 5 );
VERIFY( upd.get_deleter().id == 22 );
}
void
test_raw_ptr()
{
long l = 5, l2 = 6;
long* lp = &l;
{
auto op = std::out_ptr(lp);
VERIFY( lp == nullptr );
long** p = op;
VERIFY( *p == nullptr );
*p = &l2;
const auto& cop = op;
VERIFY( static_cast<long**>(cop) == static_cast<long**>(op) );
}
VERIFY( *lp == 6 );
}
int main()
{
test_unique_ptr();
test_shared_ptr();
test_custom_ptr();
test_raw_ptr();
}
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