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51 lines
1.1 KiB
51 lines
1.1 KiB
/*
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* Copyright (c) 2017-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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void initialized_no_dangling_ok() {
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int* p = new int(42);
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delete p;
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}
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void uninitialized_dangling_bad() {
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int* p;
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delete p;
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}
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struct TestDangling {
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int* p;
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// Field p is deliberately left uninitialized
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TestDangling() {}
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// This constructor is deliberately left unimplemented
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// to make sure Infer treats undefined function conservatively
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TestDangling(int);
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};
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int known_ctor_dangling_bad() {
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auto t0 = new TestDangling();
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int ret = *(t0->p); // should report a dangling pointer dereference here as p
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// is dangling
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delete t0;
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return ret;
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}
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int unknown_ctor_assume_no_dangling_ok() {
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auto t1 = new TestDangling(0);
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int ret =
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*(t1->p); // TestDangling(0) is not known so p may have been initialized
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delete t1;
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return ret;
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}
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short union_ok(int* param) {
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union {
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int* a;
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short* b;
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} u;
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u.a = param;
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short* p = u.b;
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return *p;
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}
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