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comparison gcc/testsuite/g++.dg/cpp0x/not_special.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 // I, Howard Hinnant, hereby place this code in the public domain.
2
3 // Test that move constructor and move assignement are special.
4 // That is, their presence should cause compiler declared
5 // copy ctor or assignment to be deleted.
6
7 // { dg-do compile { target c++11 } }
8
9 #include <assert.h>
10
11 template <bool> struct sa;
12 template <> struct sa<true> {};
13
14 struct one {char x[1];};
15 struct two {char x[2];};
16
17 int copy = 0;
18 int assign = 0;
19
20 struct base
21 {
22 base() {}
23 base(const base&) {++copy;}
24 base& operator=(const base&) {++assign; return *this;}
25 };
26
27 struct derived // { dg-message "declares a move" }
28 : base
29 {
30 derived() {}
31 derived(derived&&) {}
32 derived& operator=(derived&&) {return *this;}
33 };
34
35 int test1()
36 {
37 derived d;
38 derived d2(static_cast<derived&&>(d)); // should not call base::(const base&)
39 assert(copy == 0);
40 derived d3(d); // { dg-error "deleted" }
41 assert(copy == 1);
42 d2 = static_cast<derived&&>(d); // should not call base::operator=
43 assert(assign == 0);
44 d3 = d; // { dg-error "deleted" }
45 assert(assign == 1);
46 return 0;
47 }
48
49 int main()
50 {
51 return test1();
52 }