diff options
Diffstat (limited to 'third_party/immer/test/flex_vector/fuzzed-1.cpp')
| -rw-r--r-- | third_party/immer/test/flex_vector/fuzzed-1.cpp | 368 |
1 files changed, 0 insertions, 368 deletions
diff --git a/third_party/immer/test/flex_vector/fuzzed-1.cpp b/third_party/immer/test/flex_vector/fuzzed-1.cpp deleted file mode 100644 index d924dc3a83..0000000000 --- a/third_party/immer/test/flex_vector/fuzzed-1.cpp +++ /dev/null @@ -1,368 +0,0 @@ -// -// 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 "extra/fuzzer/fuzzer_input.hpp" -#include <array> -#include <catch.hpp> -#include <immer/flex_vector.hpp> -#include <iostream> - -#define IMMER_FUZZED_TRACE_ENABLE 0 - -#if IMMER_FUZZED_TRACE_ENABLE -#define IMMER_FUZZED_TRACE(...) std::cout << __VA_ARGS__ << std::endl; -#else -#define IMMER_FUZZED_TRACE(...) -#endif - -namespace { - -template <std::size_t VarCount = 2, unsigned Bits = 2> -int run_input(const std::uint8_t* data, std::size_t size) -{ - using vector_t = - immer::flex_vector<int, immer::default_memory_policy, Bits, Bits>; - using size_t = std::uint8_t; - - auto vars = std::array<vector_t, VarCount>{}; - -#if IMMER_FUZZED_TRACE_ENABLE - std::cout << "/// new test run" << std::endl; - for (auto i = 0u; i < VarCount; ++i) - std::cout << "auto var" << i << " = vector_t{};" << std::endl; -#endif - - auto is_valid_var = [&](auto idx) { return idx >= 0 && idx < VarCount; }; - auto is_valid_index = [](auto& v) { - return [&](auto idx) { return idx >= 0 && idx < v.size(); }; - }; - auto is_valid_size = [](auto& v) { - return [&](auto idx) { return idx >= 0 && idx <= v.size(); }; - }; - auto can_concat = [](auto&& v1, auto&& v2) { - using size_type = decltype(v1.size()); - return v2.size() < (std::numeric_limits<size_type>::max() - v1.size()); - }; - auto can_insert = [](auto&& v1) { - using size_type = decltype(v1.size()); - return v1.size() < std::numeric_limits<size_type>::max(); - }; - - return fuzzer_input{data, size}.run([&](auto& in) { - enum ops - { - op_push_back, - op_update, - op_take, - op_drop, - op_concat, - op_push_back_move, - op_update_move, - }; - auto src = read<std::uint8_t>(in, is_valid_var); - auto dst = read<std::uint8_t>(in, is_valid_var); - switch (read<char>(in)) { - case op_push_back: - if (can_insert(vars[src])) { - IMMER_FUZZED_TRACE("var" << +dst << " = var" << +src - << ".push_back(42);"); - vars[dst] = vars[src].push_back(42); - } - break; - case op_update: { - auto idx = read<size_t>(in, is_valid_index(vars[src])); - IMMER_FUZZED_TRACE("var" << +dst << " = var" << +src << ".update(" - << +idx - << ", [] (auto x) { return x + 1; });"); - vars[dst] = vars[src].update(idx, [](auto x) { return x + 1; }); - break; - } - case op_take: { - auto idx = read<size_t>(in, is_valid_size(vars[src])); - IMMER_FUZZED_TRACE("var" << +dst << " = var" << +src << ".take(" - << +idx << ");"); - vars[dst] = vars[src].take(idx); - break; - } - case op_drop: { - auto idx = read<size_t>(in, is_valid_size(vars[src])); - IMMER_FUZZED_TRACE("var" << +dst << " = var" << +src << ".take(" - << +idx << ");"); - vars[dst] = vars[src].drop(idx); - break; - } - case op_concat: { - auto src2 = read<std::uint8_t>(in, is_valid_var); - if (can_concat(vars[src], vars[src2])) { - IMMER_FUZZED_TRACE("var" << +dst << " = var" << +src << " + var" - << +src2 << ";"); - vars[dst] = vars[src] + vars[src2]; - } - break; - } - case op_push_back_move: { - if (can_insert(vars[src])) { - IMMER_FUZZED_TRACE("var" << +dst << " = std::move(var" << +src - << ").push_back(21);"); - vars[dst] = std::move(vars[src]).push_back(21); - } - break; - } - case op_update_move: { - auto idx = read<size_t>(in, is_valid_index(vars[src])); - IMMER_FUZZED_TRACE("var" << +dst << " = std::move(var" << +src - << ").update(" << +idx - << ", [] (auto x) { return x + 1; });"); - vars[dst] = - std::move(vars[src]).update(idx, [](auto x) { return x + 1; }); - break; - } - default: - break; - }; - return true; - }); -} - -} // anonymous namespace - -TEST_CASE("bug: memory leak because of move update") -{ - // There was a problem caused with shared "sizes buffer" in - // relaxed nodes. In particular, the ensure_mutable_relaxed(...) - // function was not decremeting the old sizes buffer. That is why - // the last transient push_back (which uses mutable operations) - // causes some of the relaxed buffers that are created during the - // previous concatenations, and that start to be shared from the - // update() onwards, to later be leaked. - SECTION("simplified") - { - using vector_t = - immer::flex_vector<int, immer::default_memory_policy, 2, 2>; - auto var0 = vector_t{}; - auto var1 = vector_t{}; - var0 = var0.push_back(42); - var0 = var0.push_back(42); - var0 = var0.push_back(42); - var0 = var0 + var0; - var1 = var0.push_back(42); - var0 = var0 + var1; - var1 = var0.push_back(42); - var0 = var0 + var0; - var0 = var1 + var0; - var0 = var1.update(5, [](auto x) { return x + 1; }); - var0 = std::move(var0).push_back(21); - } - -#if __GNUC__ != 9 - SECTION("") - { - constexpr std::uint8_t input[] = { - 0xff, 0x0, 0xff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x40, 0x0, 0x0, 0x4, 0x0, 0x6d, 0x6d, 0x0, 0x1, 0x0, 0x4, - 0x6d, 0x6d, 0x6d, 0x0, 0x0, 0x4, 0x1, 0x6d, 0x6d, 0x0, 0x1, - 0x0, 0x0, 0x0, 0x4, 0x28, 0x0, 0xfc, 0x1, 0x0, 0x4, 0x0, - 0x0, 0x0, 0xfc, 0x1, 0x0, 0x1, 0x5, 0x0, 0x0, 0x1, 0x5, - 0x0, 0x0, 0x5, 0x0, 0x0, 0xff, 0xff, 0xff, 0x27, - }; - CHECK(run_input(input, sizeof(input)) == 0); - } -#endif -} - -TEST_CASE("non-bug: crash") -{ - // This is an interesting finding that is left here for - // documentation. This test actually should not run... the - // problem is that when we build too large vectors via - // concatenation, we can sometimes "overflow the shift". This is - // a degenerate case that we won't fix, but this helped adding - // appropriate assertions to the code. - // - // To prevent this in further fuzzing, the can_concat check has - // been made stricter. - return; - - SECTION("simplified") - { - using vector_t = - immer::flex_vector<int, immer::default_memory_policy, 2, 2>; - auto var4 = vector_t{}; - var4 = var4.push_back(42); - var4 = var4.push_back(42); - var4 = var4.push_back(42); - var4 = var4.push_back(42); - var4 = var4.push_back(42); - auto var0 = var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var0 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4 + var4; - var4 = var4.update(4, [](auto x) { return x + 1; }); - } -#if __GNUC__ != 9 - SECTION("") - { - constexpr std::uint8_t input[] = { - 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, - 0x00, 0x00, 0x00, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x00, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x2a, 0x00, - 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0xfc, 0xf9, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0xd5, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x00, 0x01, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, - 0x01, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x21, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x00, 0x04, 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x04, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, - 0xff, 0xff, 0x13, 0x13, 0x13, 0x13, 0x13, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x29, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, - 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x00, 0x10, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, 0x04, 0x04, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x02, 0x00, 0x00, 0x00, - 0x04, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, - 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x01, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x05, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x00, 0x01, 0x04, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x05, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x3a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x04, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x23, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x04, 0x04, 0x04, - 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, 0x04, - 0x00, - }; - CHECK(run_input<8>(input, sizeof(input)) == 0); - } -#endif -} |