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1.1 KiB

/*
* Copyright (c) 2017-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <utility>
#include <tuple> // for std::get
namespace pair {
std::pair<int, int*> pairOfZeroNull() {
return std::pair<int, int*>(0, nullptr);
}
std::pair<int, int*> pairOfZeroNull2() { return std::make_pair(0, nullptr); }
int deref_pair_null0_bad() {
auto p = pairOfZeroNull();
// Should report an NPE here as p.second is NULL
return p.first + *p.second;
}
int deref_pair_null1_bad() {
auto p = pairOfZeroNull();
// Should report an NPE here as p.second is NULL
return std::get<0>(p) + *std::get<1>(p);
}
int deref_pair_null3_bad() {
auto p = pairOfZeroNull2();
// Should report an NPE here as p.second is NULL
return p.first + *p.second;
}
int deref_pair_null_guard_ok() {
auto p = pairOfZeroNull();
if (p.second != nullptr) {
// Should not report an NPE here as p.second is guarded
return p.first + *p.second;
}
return 0;
}
} // namespace pair