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49 lines
1000 B
49 lines
1000 B
/*
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* Copyright (c) Facebook, Inc. and its affiliates.
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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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#include <vector>
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void foreach_access1_ok(std::vector<int>& vec) {
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if (vec.empty()) {
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// do nothing
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}
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for (const auto& elem : vec) {
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auto r = elem;
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}
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}
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void foreach_access2_ok(std::vector<int>& vec) {
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int s = vec.size();
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for (const auto& elem : vec) {
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auto r = elem;
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}
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}
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void iterator_for_access_ok(std::vector<int>& vec) {
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if (vec.empty()) {
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// do nothing
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}
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for (auto it = vec.begin(); it != vec.end(); ++it) {
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auto r = *it;
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}
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}
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void FP_empty_vector_loop_ok() {
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std::vector<int> vec;
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int* ptr = nullptr;
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for (const auto& elem : vec) {
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*ptr = elem; // this is unreachable
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}
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}
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void non_empty_vector_loop_bad(std::vector<int>& vec) {
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std::vector<int> x;
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int* ptr = nullptr;
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for (const auto& elem : vec) {
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*ptr = elem; // this is reachable
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}
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}
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