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