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48 lines
1.2 KiB
48 lines
1.2 KiB
8 years ago
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/*
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* Copyright (c) 2017 - present Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#include <utility>
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#include <tuple> // for std::get
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namespace pair {
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std::pair<int, int*> pairOfZeroNull() {
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return std::pair<int, int*>(0, nullptr);
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}
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std::pair<int, int*> pairOfZeroNull2() { return std::make_pair(0, nullptr); }
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int deref_pair_null0_bad() {
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auto p = pairOfZeroNull();
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// Should report an NPE here as p.second is NULL
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return p.first + *p.second;
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}
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int deref_pair_null1_bad() {
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auto p = pairOfZeroNull();
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// Should report an NPE here as p.second is NULL
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return std::get<0>(p) + *std::get<1>(p);
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}
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int deref_pair_null3_bad() {
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auto p = pairOfZeroNull2();
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// Should report an NPE here as p.second is NULL
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return p.first + *p.second;
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}
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int deref_pair_null_guard_ok() {
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auto p = pairOfZeroNull();
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if (p.second != nullptr) {
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// Should not report an NPE here as p.second is guarded
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return p.first + *p.second;
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}
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return 0;
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}
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}
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