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111
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1 // PR c++/79377
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2 // { dg-do run }
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3 // { dg-options "-fpermissive" }
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4
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5 struct A
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6 {
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7 A () : a (0) {}
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8 A& operator++ () { ++a; ++c; return *this; }
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9 int a;
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10 static int c;
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11 };
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12
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13 int A::c = 0;
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14
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15 template <typename>
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16 void
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17 foo (A& a)
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18 {
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19 a++; // { dg-warning "trying prefix operator instead" }
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20 if (A::c != 3 || a.a != 3) __builtin_abort ();
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21 ++a;
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22 if (A::c != 4 || a.a != 4) __builtin_abort ();
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23 }
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24
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25 int
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26 main ()
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27 {
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28 A a;
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29 if (A::c != 0 || a.a != 0) __builtin_abort ();
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30 ++a;
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31 if (A::c != 1 || a.a != 1) __builtin_abort ();
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32 a++; // { dg-warning "trying prefix operator instead" }
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33 if (A::c != 2 || a.a != 2) __builtin_abort ();
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34 foo<int> (a);
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35 if (A::c != 4 || a.a != 4) __builtin_abort ();
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36 }
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