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1 // PR c++/56135
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2 // { dg-do run { target c++11 } }
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3
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4 #include <functional>
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5
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6 struct test {
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7 template<typename T>
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8 std::function<void()> broken(int x) {
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9 return [=] { +x; print<T>(); }; // { dg-warning "implicit capture" "" { target c++2a } }
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10 }
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11
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12 std::function<void()> works0() {
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13 return [=] { print<int>(); }; // { dg-warning "implicit capture" "" { target c++2a } }
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14 }
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15
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16 template<typename T>
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17 std::function<void()> works1() {
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18 return [=] { print<int>(); }; // { dg-warning "implicit capture" "" { target c++2a } }
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19 }
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20
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21 template<typename T>
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22 std::function<void()> works2() {
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23 return [=] { this->print<T>(); }; // { dg-warning "implicit capture" "" { target c++2a } }
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24 }
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25
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26 template<typename T>
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27 void print() { if (this == 0) __builtin_abort (); }
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28 };
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29
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30 int main(void) {
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31 test().broken<int>(1)();
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32 test().works0()();
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33 test().works1<int>()();
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34 test().works2<int>()();
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35
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36 return 0;
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37 }
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