This is xnu-11215.1.10. See this file in:
//
// Tests for
// bounded_ptr& operator=(std::nullptr_t);
//
#include <cstddef>
#include <libkern/c++/bounded_ptr.h>
#include <darwintest.h>
#include <darwintest_utils.h>
#include "test_utils.h"
#define _assert(...) T_ASSERT_TRUE((__VA_ARGS__), # __VA_ARGS__)
struct T { };
template <typename T, typename TQual>
static void
tests()
{
T obj{};
// Assign from nullptr
{
test_bounded_ptr<TQual> p(&obj, &obj, &obj + 1);
_assert(p != nullptr);
test_bounded_ptr<TQual>& ref = (p = nullptr);
_assert(&ref == &p);
_assert(p == nullptr);
}
// Assign from NULL
{
test_bounded_ptr<TQual> p(&obj, &obj, &obj + 1);
_assert(p != nullptr);
test_bounded_ptr<TQual>& ref = (p = NULL);
_assert(&ref == &p);
_assert(p == nullptr);
}
// Assign from 0
{
test_bounded_ptr<TQual> p(&obj, &obj, &obj + 1);
_assert(p != nullptr);
test_bounded_ptr<TQual>& ref = (p = 0);
_assert(&ref == &p);
_assert(p == nullptr);
}
}
T_DECL(assign_nullptr, "bounded_ptr.assign.nullptr", T_META_TAG_VM_PREFERRED) {
tests<T, T>();
tests<T, T const>();
tests<T, T volatile>();
tests<T, T const volatile>();
}