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tests: Add fuzzing harness for MultiplicationOverflow(...)

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This commit is contained in:
practicalswift 2020-03-15 11:46:57 +00:00
parent 7726f3bc46
commit d69145acb7
2 changed files with 49 additions and 0 deletions
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7
src/Makefile.test.include
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@ -42,6 +42,7 @@ FUZZ_TARGETS = \
test/fuzz/locale \
test/fuzz/merkle_block_deserialize \
test/fuzz/messageheader_deserialize \
test/fuzz/multiplication_overflow \
test/fuzz/netaddr_deserialize \
test/fuzz/netaddress \
test/fuzz/out_point_deserialize \
@ -513,6 +514,12 @@ test_fuzz_messageheader_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_messageheader_deserialize_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_messageheader_deserialize_SOURCES = $(FUZZ_SUITE) test/fuzz/deserialize.cpp
test_fuzz_multiplication_overflow_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
test_fuzz_multiplication_overflow_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_multiplication_overflow_LDADD = $(FUZZ_SUITE_LD_COMMON)
test_fuzz_multiplication_overflow_LDFLAGS = $(RELDFLAGS) $(AM_LDFLAGS) $(LIBTOOL_APP_LDFLAGS)
test_fuzz_multiplication_overflow_SOURCES = $(FUZZ_SUITE) test/fuzz/multiplication_overflow.cpp
test_fuzz_netaddr_deserialize_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) -DNETADDR_DESERIALIZE=1
test_fuzz_netaddr_deserialize_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
test_fuzz_netaddr_deserialize_LDADD = $(FUZZ_SUITE_LD_COMMON)

42
src/test/fuzz/multiplication_overflow.cpp Normal file
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@ -0,0 +1,42 @@
// Copyright (c) 2020 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <test/fuzz/FuzzedDataProvider.h>
#include <test/fuzz/fuzz.h>
#include <test/fuzz/util.h>
#include <cstdint>
#include <string>
#include <vector>
namespace {
template <typename T>
void TestMultiplicationOverflow(FuzzedDataProvider& fuzzed_data_provider)
{
const T i = fuzzed_data_provider.ConsumeIntegral<T>();
const T j = fuzzed_data_provider.ConsumeIntegral<T>();
const bool is_multiplication_overflow_custom = MultiplicationOverflow(i, j);
T result_builtin;
const bool is_multiplication_overflow_builtin = __builtin_mul_overflow(i, j, &result_builtin);
assert(is_multiplication_overflow_custom == is_multiplication_overflow_builtin);
if (!is_multiplication_overflow_custom) {
assert(i * j == result_builtin);
}
}
} // namespace
void test_one_input(const std::vector<uint8_t>& buffer)
{
FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
TestMultiplicationOverflow<int64_t>(fuzzed_data_provider);
TestMultiplicationOverflow<uint64_t>(fuzzed_data_provider);
TestMultiplicationOverflow<int32_t>(fuzzed_data_provider);
TestMultiplicationOverflow<uint32_t>(fuzzed_data_provider);
TestMultiplicationOverflow<int16_t>(fuzzed_data_provider);
TestMultiplicationOverflow<uint16_t>(fuzzed_data_provider);
TestMultiplicationOverflow<char>(fuzzed_data_provider);
TestMultiplicationOverflow<unsigned char>(fuzzed_data_provider);
TestMultiplicationOverflow<signed char>(fuzzed_data_provider);
TestMultiplicationOverflow<bool>(fuzzed_data_provider);
}