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Diffstat (limited to '')
-rw-r--r-- | third_party/immer/extra/fuzzer/set-gc.cpp | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/third_party/immer/extra/fuzzer/set-gc.cpp b/third_party/immer/extra/fuzzer/set-gc.cpp new file mode 100644 index 000000000000..3b88c08f3c2d --- /dev/null +++ b/third_party/immer/extra/fuzzer/set-gc.cpp @@ -0,0 +1,78 @@ +// +// immer: immutable data structures for C++ +// Copyright (C) 2016, 2017, 2018 Juan Pedro Bolivar Puente +// +// This software is distributed under the Boost Software License, Version 1.0. +// See accompanying file LICENSE or copy at http://boost.org/LICENSE_1_0.txt +// + +#include "fuzzer_input.hpp" + +#include <immer/heap/gc_heap.hpp> +#include <immer/refcount/no_refcount_policy.hpp> +#include <immer/set.hpp> + +#include <array> + +using gc_memory = immer::memory_policy<immer::heap_policy<immer::gc_heap>, + immer::no_refcount_policy, + immer::gc_transience_policy, + false>; + +extern "C" int LLVMFuzzerTestOneInput(const std::uint8_t* data, + std::size_t size) +{ + constexpr auto var_count = 4; + + using set_t = + immer::set<int, std::hash<char>, std::equal_to<char>, gc_memory>; + + auto vars = std::array<set_t, var_count>{}; + + auto is_valid_var = [&](auto idx) { return idx >= 0 && idx < var_count; }; + + return fuzzer_input{data, size}.run([&](auto& in) { + enum ops + { + op_insert, + op_erase, + op_insert_move, + op_erase_move, + op_iterate + }; + auto src = read<char>(in, is_valid_var); + auto dst = read<char>(in, is_valid_var); + switch (read<char>(in)) { + case op_insert: { + auto value = read<size_t>(in); + vars[dst] = vars[src].insert(value); + break; + } + case op_erase: { + auto value = read<size_t>(in); + vars[dst] = vars[src].erase(value); + break; + } + case op_insert_move: { + auto value = read<size_t>(in); + vars[dst] = std::move(vars[src]).insert(value); + break; + } + case op_erase_move: { + auto value = read<size_t>(in); + vars[dst] = vars[src].erase(value); + break; + } + case op_iterate: { + auto srcv = vars[src]; + for (const auto& v : srcv) { + vars[dst] = vars[dst].insert(v); + } + break; + } + default: + break; + }; + return true; + }); +} |