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// RUN: %check_clang_tidy %s performance-move-const-arg %t \
// RUN: -config='{CheckOptions: \
// RUN: [{key: performance-move-const-arg.CheckMoveToConstRef, value: false}]}'
namespace std {
template <typename>
struct remove_reference;
template <typename _Tp>
struct remove_reference {
typedef _Tp type;
};
template <typename _Tp>
struct remove_reference<_Tp &> {
typedef _Tp type;
};
template <typename _Tp>
struct remove_reference<_Tp &&> {
typedef _Tp type;
};
template <typename _Tp>
constexpr typename std::remove_reference<_Tp>::type &&move(_Tp &&__t) {
return static_cast<typename std::remove_reference<_Tp>::type &&>(__t);
}
template <typename _Tp>
constexpr _Tp &&
forward(typename remove_reference<_Tp>::type &__t) noexcept {
return static_cast<_Tp &&>(__t);
}
} // namespace std
struct TriviallyCopyable {
int i;
};
void f(TriviallyCopyable) {}
void g() {
TriviallyCopyable obj;
// Some basic test to ensure that other warnings from
// performance-move-const-arg are still working and enabled.
f(std::move(obj));
// CHECK-MESSAGES: :[[@LINE-1]]:5: warning: std::move of the variable 'obj' of the trivially-copyable type 'TriviallyCopyable' has no effect; remove std::move() [performance-move-const-arg]
// CHECK-FIXES: f(obj);
}
class NoMoveSemantics {
public:
NoMoveSemantics();
NoMoveSemantics(const NoMoveSemantics &);
NoMoveSemantics &operator=(const NoMoveSemantics &);
};
class MoveSemantics {
public:
MoveSemantics();
MoveSemantics(MoveSemantics &&);
MoveSemantics &operator=(MoveSemantics &&);
};
void callByConstRef1(const NoMoveSemantics &);
void callByConstRef2(const MoveSemantics &);
void moveToConstReferencePositives() {
NoMoveSemantics a;
// This call is now allowed since CheckMoveToConstRef is false.
callByConstRef1(std::move(a));
MoveSemantics b;
// This call is now allowed since CheckMoveToConstRef is false.
callByConstRef2(std::move(b));
}
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