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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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: sanitizer-new-delete
// <memory>
// template <class Y, class D> shared_ptr(unique_ptr<Y, D>&&r);
#include <memory>
#include <new>
#include <cstdlib>
#include <cassert>
#include <utility>
#include "test_macros.h"
#include "count_new.h"
struct B
{
static int count;
B() {++count;}
B(const B&) {++count;}
virtual ~B() {--count;}
};
int B::count = 0;
struct A
: public B
{
static int count;
A() {++count;}
A(const A& other) : B(other) {++count;}
~A() {--count;}
};
int A::count = 0;
void fn ( const std::shared_ptr<int> &) {}
void fn ( const std::shared_ptr<B> &) { assert (false); }
template <typename T>
void assert_deleter ( T * ) { assert(false); }
namespace adl {
struct D {
void operator()(int *) const {}
};
void ref(D);
}
template <class T>
struct StatefulDeleter {
int state = 0;
StatefulDeleter(int val = 0) : state(val) {}
StatefulDeleter(StatefulDeleter const&) { assert(false); }
void operator()(T* ptr) {
assert(state == 42);
delete ptr;
}
};
template <class T>
struct StatefulArrayDeleter {
int state = 0;
StatefulArrayDeleter(int val = 0) : state(val) {}
StatefulArrayDeleter(StatefulArrayDeleter const&) { assert(false); }
void operator()(T* ptr) {
assert(state == 42);
delete []ptr;
}
};
struct MovingDeleter {
explicit MovingDeleter(int *moves) : moves_(moves) {}
MovingDeleter(MovingDeleter&& rhs) : moves_(rhs.moves_) { *moves_ += 1; }
void operator()(int*) const {}
int *moves_;
};
// https://llvm.org/PR53368
// Bogus unique_ptr-to-shared_ptr conversions should be forbidden
#if TEST_STD_VER >= 17
static_assert( std::is_constructible<std::shared_ptr<A>, std::unique_ptr<A>&&>::value, "");
static_assert( std::is_constructible<std::shared_ptr<A[]>, std::unique_ptr<A[]>&&>::value, "");
static_assert(!std::is_constructible<std::shared_ptr<A>, std::unique_ptr<A[]>&&>::value, "");
static_assert(!std::is_constructible<std::shared_ptr<B[]>, std::unique_ptr<A[]>&&>::value, "");
static_assert(!std::is_constructible<std::shared_ptr<B>, std::unique_ptr<A[]>&&>::value, "");
#endif
int main(int, char**)
{
{
std::unique_ptr<A> ptr(new A);
A* raw_ptr = ptr.get();
std::shared_ptr<B> p(std::move(ptr));
assert(A::count == 1);
assert(B::count == 1);
assert(p.use_count() == 1);
assert(p.get() == raw_ptr);
assert(ptr.get() == 0);
}
{
std::unique_ptr<A const> ptr(new A);
A const* raw_ptr = ptr.get();
std::shared_ptr<B const> p(std::move(ptr));
assert(A::count == 1);
assert(B::count == 1);
assert(p.use_count() == 1);
assert(p.get() == raw_ptr);
assert(ptr.get() == 0);
}
#ifndef TEST_HAS_NO_EXCEPTIONS
assert(A::count == 0);
{
std::unique_ptr<A> ptr(new A);
A* raw_ptr = ptr.get();
globalMemCounter.throw_after = 0;
try
{
std::shared_ptr<B> p(std::move(ptr));
assert(false);
}
catch (...)
{
assert(A::count == 1);
assert(B::count == 1);
assert(ptr.get() == raw_ptr);
}
}
#endif
#if TEST_STD_VER > 14
{
std::unique_ptr<int> ptr;
std::shared_ptr<int> p(std::move(ptr));
assert(p.get() == 0);
assert(p.use_count() == 0);
}
#endif
{
StatefulDeleter<A> d;
std::unique_ptr<A, StatefulDeleter<A>&> u(new A, d);
std::shared_ptr<A> p(std::move(u));
d.state = 42;
assert(A::count == 1);
}
assert(A::count == 0);
{ // LWG 2399
fn(std::unique_ptr<int>(new int));
}
#if TEST_STD_VER >= 14
{ // LWG 2415
std::unique_ptr<int, void (*)(int*)> p(nullptr, assert_deleter<int>);
std::shared_ptr<int> p2(std::move(p)); // should not call deleter when going out of scope
}
#endif
{
adl::D d;
std::unique_ptr<int, adl::D&> u(nullptr, d);
std::shared_ptr<int> s = std::move(u);
}
assert(A::count == 0);
#if TEST_STD_VER > 14
{
StatefulArrayDeleter<A> d;
std::unique_ptr<A[], StatefulArrayDeleter<A>&> u(new A[4], d);
std::shared_ptr<A[]> p(std::move(u));
d.state = 42;
assert(A::count == 4);
}
assert(A::count == 0);
assert(B::count == 0);
{
std::unique_ptr<A[]> ptr(new A[8]);
A* raw_ptr = ptr.get();
std::shared_ptr<A[]> p(std::move(ptr));
assert(A::count == 8);
assert(p.use_count() == 1);
assert(p.get() == raw_ptr);
assert(ptr.get() == 0);
}
assert(A::count == 0);
{
int *p = new int[8];
std::unique_ptr<int[]> u(p);
std::shared_ptr<int[]> s(std::move(u));
assert(u == nullptr);
assert(s.get() == p);
}
#endif // TEST_STD_VER > 14
{ // LWG 3548
{
int moves = 0;
int i = 42;
std::unique_ptr<int, MovingDeleter> u(&i, MovingDeleter(&moves));
assert(moves == 1);
std::shared_ptr<int> s(std::move(u));
assert(moves >= 2);
assert(u == nullptr);
assert(s.get() == &i);
}
#if TEST_STD_VER > 14
{
int moves = 0;
int a[8];
std::unique_ptr<int[], MovingDeleter> u(a, MovingDeleter(&moves));
assert(moves == 1);
std::shared_ptr<int[]> s = std::move(u);
assert(moves >= 2);
assert(u == nullptr);
assert(s.get() == a);
}
#endif // TEST_STD_VER > 14
}
return 0;
}
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