mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
/*
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This file is part of solidity.
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solidity is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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solidity is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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#include <libyul/AsmAnalysisInfo.h>
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#include <libyul/AsmAnalysis.h>
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#include <libyul/Dialect.h>
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#include <libyul/backends/evm/EVMDialect.h>
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#include <libyul/YulStack.h>
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#include <liblangutil/DebugInfoSelection.h>
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#include <liblangutil/Exceptions.h>
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#include <liblangutil/EVMVersion.h>
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#include <libsolutil/CommonIO.h>
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#include <libsolutil/CommonData.h>
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#include <libsolutil/StringUtils.h>
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#include <test/tools/ossfuzz/yulFuzzerCommon.h>
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#include <string>
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#include <memory>
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#include <iostream>
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using namespace std;
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using namespace solidity;
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using namespace solidity::yul;
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using namespace solidity::util;
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using namespace solidity::langutil;
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using namespace solidity::yul::test::yul_fuzzer;
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// Prototype as we can't use the FuzzerInterface.h header.
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extern "C" int LLVMFuzzerTestOneInput(uint8_t const* _data, size_t _size);
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extern "C" int LLVMFuzzerTestOneInput(uint8_t const* _data, size_t _size)
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{
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if (_size > 600)
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return 0;
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string input(reinterpret_cast<char const*>(_data), _size);
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if (std::any_of(input.begin(), input.end(), [](char c) {
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return ((static_cast<unsigned char>(c) > 127) || !(isPrint(c) || (c == '\n') || (c == '\t')));
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}))
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return 0;
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YulStringRepository::reset();
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YulStack stack(
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langutil::EVMVersion(),
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nullopt,
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YulStack::Language::StrictAssembly,
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solidity::frontend::OptimiserSettings::full(),
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DebugInfoSelection::All()
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);
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try
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{
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if (
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!stack.parseAndAnalyze("source", input) ||
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!stack.parserResult()->code ||
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!stack.parserResult()->analysisInfo
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)
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return 0;
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}
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catch (Exception const&)
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{
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return 0;
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}
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ostringstream os1;
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ostringstream os2;
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// Disable memory tracing to avoid false positive reports
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// such as unused write to memory e.g.,
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// { mstore(0, 1) }
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// that would be removed by the redundant store eliminator.
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yulFuzzerUtil::TerminationReason termReason = yulFuzzerUtil::interpret(
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os1,
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stack.parserResult()->code,
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EVMDialect::strictAssemblyForEVMObjects(langutil::EVMVersion()),
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/*disableMemoryTracing=*/true
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);
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if (yulFuzzerUtil::resourceLimitsExceeded(termReason))
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return 0;
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stack.optimize();
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termReason = yulFuzzerUtil::interpret(
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os2,
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stack.parserResult()->code,
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EVMDialect::strictAssemblyForEVMObjects(langutil::EVMVersion()),
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/*disableMemoryTracing=*/true
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);
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if (yulFuzzerUtil::resourceLimitsExceeded(termReason))
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return 0;
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bool isTraceEq = (os1.str() == os2.str());
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yulAssert(isTraceEq, "Interpreted traces for optimized and unoptimized code differ.");
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return 0;
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}
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