forked from OSchip/llvm-project
72 lines
1.4 KiB
C++
72 lines
1.4 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is dual licensed under the MIT and the University of Illinois Open
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// Source Licenses. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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// test move
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#include <utility>
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#include <cassert>
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int copy_ctor = 0;
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int move_ctor = 0;
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class A
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{
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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#else
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#endif
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public:
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#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
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A(const A&) {++copy_ctor;}
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A& operator=(const A&);
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A(A&&) {++move_ctor;}
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A& operator=(A&&);
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#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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A(const A&) {++copy_ctor;}
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A& operator=(A&);
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operator std::__rv<A> () {return std::__rv<A>(*this);}
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A(std::__rv<A>) {++move_ctor;}
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#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
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A() {}
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};
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A source() {return A();}
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const A csource() {return A();}
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void test(A) {}
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int main()
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{
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A a;
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const A ca = A();
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assert(copy_ctor == 0);
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assert(move_ctor == 0);
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A a2 = a;
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assert(copy_ctor == 1);
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assert(move_ctor == 0);
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A a3 = std::move(a);
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assert(copy_ctor == 1);
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assert(move_ctor == 1);
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A a4 = ca;
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assert(copy_ctor == 2);
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assert(move_ctor == 1);
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A a5 = std::move(ca);
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assert(copy_ctor == 3);
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assert(move_ctor == 1);
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}
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