81 lines
1.9 KiB
C++
81 lines
1.9 KiB
C++
// RUN: %check_clang_tidy %s performance-move-const-arg %t \
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// RUN: -config='{CheckOptions: \
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// RUN: [{key: performance-move-const-arg.CheckMoveToConstRef, value: false}]}'
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namespace std {
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template <typename>
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struct remove_reference;
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template <typename _Tp>
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struct remove_reference {
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typedef _Tp type;
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};
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template <typename _Tp>
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struct remove_reference<_Tp &> {
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typedef _Tp type;
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};
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template <typename _Tp>
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struct remove_reference<_Tp &&> {
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typedef _Tp type;
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};
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template <typename _Tp>
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constexpr typename std::remove_reference<_Tp>::type &&move(_Tp &&__t) {
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return static_cast<typename std::remove_reference<_Tp>::type &&>(__t);
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}
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template <typename _Tp>
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constexpr _Tp &&
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forward(typename remove_reference<_Tp>::type &__t) noexcept {
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return static_cast<_Tp &&>(__t);
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}
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} // namespace std
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struct TriviallyCopyable {
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int i;
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};
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void f(TriviallyCopyable) {}
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void g() {
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TriviallyCopyable obj;
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// Some basic test to ensure that other warnings from
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// performance-move-const-arg are still working and enabled.
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f(std::move(obj));
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// 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]
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// CHECK-FIXES: f(obj);
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}
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class NoMoveSemantics {
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public:
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NoMoveSemantics();
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NoMoveSemantics(const NoMoveSemantics &);
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NoMoveSemantics &operator=(const NoMoveSemantics &);
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};
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class MoveSemantics {
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public:
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MoveSemantics();
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MoveSemantics(MoveSemantics &&);
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MoveSemantics &operator=(MoveSemantics &&);
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};
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void callByConstRef1(const NoMoveSemantics &);
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void callByConstRef2(const MoveSemantics &);
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void moveToConstReferencePositives() {
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NoMoveSemantics a;
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// This call is now allowed since CheckMoveToConstRef is false.
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callByConstRef1(std::move(a));
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MoveSemantics b;
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// This call is now allowed since CheckMoveToConstRef is false.
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callByConstRef2(std::move(b));
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}
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