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49 lines
1.0 KiB
49 lines
1.0 KiB
/*
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* Copyright (c) 2018-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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struct B {
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B(int v) : f(v){};
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int f;
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};
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struct A {
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A(int f) { b = new B(f); }
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B* b;
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B* getb() { return b; };
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~A() { delete b; }
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};
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struct ReferenceWrapperHeap {
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ReferenceWrapperHeap(A& a) : b(a.getb()){};
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B* b;
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};
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ReferenceWrapperHeap getwrapperHeap() {
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A a(1);
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return a; // We store a.b in ReferenceWrapper, but we delete a.b in the
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// destructor of A
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}
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int FN_reference_wrapper_heap_bad() {
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ReferenceWrapperHeap rw = getwrapperHeap();
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return rw.b->f; // we want to report use after lifetime bug here
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}
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struct ReferenceWrapperStack {
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ReferenceWrapperStack(B& bref) : b(&bref){};
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B* b;
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};
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ReferenceWrapperStack getwrapperStack() {
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B b(1);
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return b;
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}
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int FN_reference_wrapper_stack_bad() {
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ReferenceWrapperStack rw = getwrapperStack();
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return rw.b->f; // we want to report use after lifetime bug here
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}
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