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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// <memory>
// unique_ptr
// Test unique_ptr converting move assignment
#include <memory>
#include <utility>
#include <cassert>
#include "unique_ptr_test_helper.h"
template <class APtr, class BPtr>
void testAssign(APtr& aptr, BPtr& bptr) {
A* p = bptr.get();
assert(A::count == 2);
aptr = std::move(bptr);
assert(aptr.get() == p);
assert(bptr.get() == 0);
assert(A::count == 1);
assert(B::count == 1);
}
template <class LHS, class RHS>
void checkDeleter(LHS& lhs, RHS& rhs, int LHSState, int RHSState) {
assert(lhs.get_deleter().state() == LHSState);
assert(rhs.get_deleter().state() == RHSState);
}
template <class T>
struct NCConvertingDeleter {
NCConvertingDeleter() = default;
NCConvertingDeleter(NCConvertingDeleter const&) = delete;
NCConvertingDeleter(NCConvertingDeleter&&) = default;
template <class U>
NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
void operator()(T*) const {}
};
template <class T>
struct NCConvertingDeleter<T[]> {
NCConvertingDeleter() = default;
NCConvertingDeleter(NCConvertingDeleter const&) = delete;
NCConvertingDeleter(NCConvertingDeleter&&) = default;
template <class U>
NCConvertingDeleter(NCConvertingDeleter<U>&&) {}
void operator()(T*) const {}
};
struct GenericDeleter {
void operator()(void*) const;
};
struct NCGenericDeleter {
NCGenericDeleter() = default;
NCGenericDeleter(NCGenericDeleter const&) = delete;
NCGenericDeleter(NCGenericDeleter&&) = default;
void operator()(void*) const {}
};
void test_sfinae() {
using DA = NCConvertingDeleter<A[]>; // non-copyable deleters
using DAC = NCConvertingDeleter<const A[]>; // non-copyable deleters
using UA = std::unique_ptr<A[]>;
using UAC = std::unique_ptr<const A[]>;
using UAD = std::unique_ptr<A[], DA>;
using UACD = std::unique_ptr<const A[], DAC>;
{ // cannot move from an lvalue
static_assert(std::is_assignable<UAC, UA&&>::value, "");
static_assert(!std::is_assignable<UAC, UA&>::value, "");
static_assert(!std::is_assignable<UAC, const UA&>::value, "");
}
{ // cannot move if the deleter-types cannot convert
static_assert(std::is_assignable<UACD, UAD&&>::value, "");
static_assert(!std::is_assignable<UACD, UAC&&>::value, "");
static_assert(!std::is_assignable<UAC, UACD&&>::value, "");
}
{ // cannot move-convert with reference deleters of different types
using UA1 = std::unique_ptr<A[], DA&>;
using UA2 = std::unique_ptr<A[], DAC&>;
static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
}
{ // cannot move-convert with reference deleters of different types
using UA1 = std::unique_ptr<A[], const DA&>;
using UA2 = std::unique_ptr<A[], const DAC&>;
static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
}
{ // cannot move-convert from unique_ptr<Single>
using UA1 = std::unique_ptr<A[]>;
using UA2 = std::unique_ptr<A>;
static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
}
{ // cannot move-convert from unique_ptr<Array[]>
using UA1 = std::unique_ptr<A[], NCGenericDeleter>;
using UA2 = std::unique_ptr<A, NCGenericDeleter>;
static_assert(!std::is_assignable<UA1, UA2&&>::value, "");
}
}
int main() {
test_sfinae();
// FIXME: add tests
}
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