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1 // RUN: %clang_cc1 -std=c++14 -verify %s
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2
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3 // pr33561
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4 class ArrayBuffer;
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5 template <typename T> class Trans_NS_WTF_RefPtr {
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6 public:
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7 ArrayBuffer *operator->() { return nullptr; }
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8 };
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9 Trans_NS_WTF_RefPtr<ArrayBuffer> get();
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10 template <typename _Visitor>
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11 constexpr void visit(_Visitor __visitor) {
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12 __visitor(get()); // expected-note {{in instantiation}}
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13 }
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14 class ArrayBuffer {
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15 char data() {
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16 visit([](auto buffer) -> char { // expected-note {{in instantiation}}
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17 buffer->data();
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18 }); // expected-warning {{non-void lambda does not return a value}}
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19 } // expected-warning {{non-void function does not return a value}}
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20 };
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21
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22 // pr34185
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23 template <typename Promise> struct coroutine_handle {
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24 Promise &promise() const { return
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25 *static_cast<Promise *>(nullptr); // expected-warning {{binding dereferenced null}}
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26 }
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27 };
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28
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29 template <typename Promise> auto GetCurrenPromise() {
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30 struct Awaiter { // expected-note {{in instantiation}}
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31 void await_suspend(coroutine_handle<Promise> h) {
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32 h.promise(); // expected-note {{in instantiation}}
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33 }
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34 };
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35 return Awaiter{};
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36 }
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37
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38 void foo() {
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39 auto &&p = GetCurrenPromise<int>(); // expected-note {{in instantiation}}
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40 }
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