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-BEGIN VERIFY SCRIPT- ./contrib/devtools/copyright_header.py update ./ -END VERIFY SCRIPT- Commits of previous years: * 2020:fa0074e2d8* 2019:aaaaad6ac9
51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
// Copyright (c) 2020-2021 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#if defined(HAVE_CONFIG_H)
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#include <config/bitcoin-config.h>
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#endif
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#include <test/fuzz/FuzzedDataProvider.h>
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#include <test/fuzz/fuzz.h>
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#include <test/fuzz/util.h>
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#include <cstdint>
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#include <string>
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#include <vector>
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namespace {
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template <typename T>
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void TestMultiplicationOverflow(FuzzedDataProvider& fuzzed_data_provider)
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{
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const T i = fuzzed_data_provider.ConsumeIntegral<T>();
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const T j = fuzzed_data_provider.ConsumeIntegral<T>();
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const bool is_multiplication_overflow_custom = MultiplicationOverflow(i, j);
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#if defined(HAVE_BUILTIN_MUL_OVERFLOW)
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T result_builtin;
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const bool is_multiplication_overflow_builtin = __builtin_mul_overflow(i, j, &result_builtin);
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assert(is_multiplication_overflow_custom == is_multiplication_overflow_builtin);
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if (!is_multiplication_overflow_custom) {
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assert(i * j == result_builtin);
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}
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#else
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if (!is_multiplication_overflow_custom) {
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(void)(i * j);
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}
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#endif
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}
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} // namespace
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FUZZ_TARGET(multiplication_overflow)
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{
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FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
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TestMultiplicationOverflow<int64_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<uint64_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<int32_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<uint32_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<int16_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<uint16_t>(fuzzed_data_provider);
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TestMultiplicationOverflow<char>(fuzzed_data_provider);
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TestMultiplicationOverflow<unsigned char>(fuzzed_data_provider);
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TestMultiplicationOverflow<signed char>(fuzzed_data_provider);
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}
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