Merge pull request #1975 from LianaHus/sol_EVMExceptions

"error jump" instead of STOP instraction in case of exception
This commit is contained in:
chriseth 2015-06-01 17:45:55 +02:00
commit 82b3a6b1f4
3 changed files with 92 additions and 207 deletions

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@ -1,192 +0,0 @@
/*
This file is part of cpp-ethereum.
cpp-ethereum is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
cpp-ethereum is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author Christian <c@ethdev.com>
* @date 2014
* Unit tests for the solidity compiler.
*/
#include <string>
#include <iostream>
#include <boost/test/unit_test.hpp>
#include <libdevcore/Log.h>
#include <libsolidity/Scanner.h>
#include <libsolidity/Parser.h>
#include <libsolidity/NameAndTypeResolver.h>
#include <libsolidity/Compiler.h>
#include <libsolidity/AST.h>
using namespace std;
using namespace dev::eth;
namespace dev
{
namespace solidity
{
namespace test
{
namespace
{
bytes compileContract(const string& _sourceCode)
{
Parser parser;
ASTPointer<SourceUnit> sourceUnit;
BOOST_REQUIRE_NO_THROW(sourceUnit = parser.parse(make_shared<Scanner>(CharStream(_sourceCode))));
NameAndTypeResolver resolver({});
resolver.registerDeclarations(*sourceUnit);
for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
BOOST_REQUIRE_NO_THROW(resolver.resolveNamesAndTypes(*contract));
}
for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
BOOST_REQUIRE_NO_THROW(resolver.checkTypeRequirements(*contract));
}
for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
{
Compiler compiler;
compiler.compileContract(*contract, map<ContractDefinition const*, bytes const*>{});
// debug
//compiler.streamAssembly(cout);
return compiler.getAssembledBytecode();
}
BOOST_FAIL("No contract found in source.");
return bytes();
}
/// Checks that @a _compiledCode is present starting from offset @a _offset in @a _expectation.
/// This is necessary since the compiler will add boilerplate add the beginning that is not
/// tested here.
void checkCodePresentAt(bytes const& _compiledCode, bytes const& _expectation, unsigned _offset)
{
BOOST_REQUIRE(_compiledCode.size() >= _offset + _expectation.size());
auto checkStart = _compiledCode.begin() + _offset;
BOOST_CHECK_EQUAL_COLLECTIONS(checkStart, checkStart + _expectation.size(),
_expectation.begin(), _expectation.end());
}
} // end anonymous namespace
BOOST_AUTO_TEST_SUITE(SolidityCompiler)
BOOST_AUTO_TEST_CASE(smoke_test)
{
char const* sourceCode = "contract test {\n"
" function f() { var x = 2; }\n"
"}\n";
bytes code = compileContract(sourceCode);
unsigned boilerplateSize = 73;
bytes expectation({byte(Instruction::JUMPDEST),
byte(Instruction::PUSH1), 0x0, // initialize local variable x
byte(Instruction::PUSH1), 0x2,
byte(Instruction::SWAP1),
byte(Instruction::POP),
byte(Instruction::JUMPDEST),
byte(Instruction::POP),
byte(Instruction::JUMP)});
checkCodePresentAt(code, expectation, boilerplateSize);
}
BOOST_AUTO_TEST_CASE(ifStatement)
{
char const* sourceCode = "contract test {\n"
" function f() { bool x; if (x) 77; else if (!x) 78; else 79; }"
"}\n";
bytes code = compileContract(sourceCode);
unsigned shift = 60;
unsigned boilerplateSize = 73;
bytes expectation({
byte(Instruction::JUMPDEST),
byte(Instruction::PUSH1), 0x0,
byte(Instruction::DUP1),
byte(Instruction::ISZERO),
byte(Instruction::PUSH1), byte(0x0f + shift), // "false" target
byte(Instruction::JUMPI),
// "if" body
byte(Instruction::PUSH1), 0x4d,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x21 + shift),
byte(Instruction::JUMP),
// new check "else if" condition
byte(Instruction::JUMPDEST),
byte(Instruction::DUP1),
byte(Instruction::ISZERO),
byte(Instruction::ISZERO),
byte(Instruction::PUSH1), byte(0x1c + shift),
byte(Instruction::JUMPI),
// "else if" body
byte(Instruction::PUSH1), 0x4e,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x20 + shift),
byte(Instruction::JUMP),
// "else" body
byte(Instruction::JUMPDEST),
byte(Instruction::PUSH1), 0x4f,
byte(Instruction::POP),
});
checkCodePresentAt(code, expectation, boilerplateSize);
}
BOOST_AUTO_TEST_CASE(loops)
{
char const* sourceCode = "contract test {\n"
" function f() { while(true){1;break;2;continue;3;return;4;} }"
"}\n";
bytes code = compileContract(sourceCode);
unsigned shift = 60;
unsigned boilerplateSize = 73;
bytes expectation({byte(Instruction::JUMPDEST),
byte(Instruction::JUMPDEST),
byte(Instruction::PUSH1), 0x1,
byte(Instruction::ISZERO),
byte(Instruction::PUSH1), byte(0x21 + shift),
byte(Instruction::JUMPI),
byte(Instruction::PUSH1), 0x1,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x21 + shift),
byte(Instruction::JUMP), // break
byte(Instruction::PUSH1), 0x2,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x2 + shift),
byte(Instruction::JUMP), // continue
byte(Instruction::PUSH1), 0x3,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x22 + shift),
byte(Instruction::JUMP), // return
byte(Instruction::PUSH1), 0x4,
byte(Instruction::POP),
byte(Instruction::PUSH1), byte(0x2 + shift),
byte(Instruction::JUMP),
byte(Instruction::JUMPDEST),
byte(Instruction::JUMPDEST),
byte(Instruction::JUMP)});
checkCodePresentAt(code, expectation, boilerplateSize);
}
BOOST_AUTO_TEST_SUITE_END()
}
}
} // end namespaces

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@ -4080,7 +4080,6 @@ BOOST_AUTO_TEST_CASE(struct_delete_member)
} }
)"; )";
compileAndRun(sourceCode, 0, "test"); compileAndRun(sourceCode, 0, "test");
auto res = callContractFunction("deleteMember()");
BOOST_CHECK(callContractFunction("deleteMember()") == encodeArgs(0)); BOOST_CHECK(callContractFunction("deleteMember()") == encodeArgs(0));
} }
@ -4106,10 +4105,73 @@ BOOST_AUTO_TEST_CASE(struct_delete_struct_in_mapping)
} }
)"; )";
compileAndRun(sourceCode, 0, "test"); compileAndRun(sourceCode, 0, "test");
auto res = callContractFunction("deleteIt()");
BOOST_CHECK(callContractFunction("deleteIt()") == encodeArgs(0)); BOOST_CHECK(callContractFunction("deleteIt()") == encodeArgs(0));
} }
BOOST_AUTO_TEST_CASE(evm_exceptions_out_of_band_access)
{
char const* sourceCode = R"(
contract A {
uint[3] arr;
bool public test = false;
function getElement(uint i) returns (uint)
{
return arr[i];
}
function testIt() returns (bool)
{
uint i = this.getElement(5);
test = true;
return true;
}
}
)";
compileAndRun(sourceCode, 0, "A");
BOOST_CHECK(callContractFunction("test()") == encodeArgs(false));
BOOST_CHECK(callContractFunction("testIt()") == encodeArgs());
BOOST_CHECK(callContractFunction("test()") == encodeArgs(false));
}
BOOST_AUTO_TEST_CASE(evm_exceptions_in_constructor_call_fail)
{
char const* sourceCode = R"(
contract A {
function A()
{
this.call("123");
}
}
contract B {
uint public test = 1;
function testIt()
{
A a = new A();
++test;
}
}
)";
compileAndRun(sourceCode, 0, "B");
BOOST_CHECK(callContractFunction("testIt()") == encodeArgs());
BOOST_CHECK(callContractFunction("test()") == encodeArgs(2));
}
BOOST_AUTO_TEST_CASE(evm_exceptions_in_constructor_out_of_baund)
{
char const* sourceCode = R"(
contract A {
uint public test = 1;
uint[3] arr;
function A()
{
test = arr[5];
++test;
}
}
)";
BOOST_CHECK(compileAndRunWthoutCheck(sourceCode, 0, "A").empty());
}
BOOST_AUTO_TEST_SUITE_END() BOOST_AUTO_TEST_SUITE_END()
} }

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@ -42,21 +42,25 @@ class ExecutionFramework
public: public:
ExecutionFramework() { g_logVerbosity = 0; } ExecutionFramework() { g_logVerbosity = 0; }
bytes const& compileAndRun(std::string const& _sourceCode, u256 const& _value = 0, std::string const& _contractName = "") bytes const& compileAndRunWthoutCheck(std::string const& _sourceCode, u256 const& _value = 0, std::string const& _contractName = "")
{ {
m_compiler.reset(false, m_addStandardSources); m_compiler.reset(false, m_addStandardSources);
m_compiler.addSource("", _sourceCode); m_compiler.addSource("", _sourceCode);
ETH_TEST_REQUIRE_NO_THROW(m_compiler.compile(m_optimize), "Compiling contract failed"); ETH_TEST_REQUIRE_NO_THROW(m_compiler.compile(m_optimize), "Compiling contract failed");
bytes code = m_compiler.getBytecode(_contractName); bytes code = m_compiler.getBytecode(_contractName);
sendMessage(code, true, _value); sendMessage(code, true, _value);
return m_output;
}
bytes const& compileAndRun(std::string const& _sourceCode, u256 const& _value = 0, std::string const& _contractName = "")
{
compileAndRunWthoutCheck(_sourceCode, _value, _contractName);
BOOST_REQUIRE(!m_output.empty()); BOOST_REQUIRE(!m_output.empty());
return m_output; return m_output;
} }
template <class... Args> template <class... Args>
bytes const& callContractFunctionWithValue(std::string _sig, u256 const& _value, bytes const& callContractFunctionWithValue(std::string _sig, u256 const& _value, Args const&... _arguments)
Args const&... _arguments)
{ {
FixedHash<4> hash(dev::sha3(_sig)); FixedHash<4> hash(dev::sha3(_sig));
sendMessage(hash.asBytes() + encodeArgs(_arguments...), false, _value); sendMessage(hash.asBytes() + encodeArgs(_arguments...), false, _value);
@ -74,21 +78,30 @@ public:
{ {
bytes solidityResult = callContractFunction(_sig, _arguments...); bytes solidityResult = callContractFunction(_sig, _arguments...);
bytes cppResult = callCppAndEncodeResult(_cppFunction, _arguments...); bytes cppResult = callCppAndEncodeResult(_cppFunction, _arguments...);
BOOST_CHECK_MESSAGE(solidityResult == cppResult, "Computed values do not match." BOOST_CHECK_MESSAGE(
"\nSolidity: " + toHex(solidityResult) + "\nC++: " + toHex(cppResult)); solidityResult == cppResult,
"Computed values do not match.\nSolidity: " +
toHex(solidityResult) +
"\nC++: " +
toHex(cppResult));
} }
template <class CppFunction, class... Args> template <class CppFunction, class... Args>
void testSolidityAgainstCppOnRange(std::string _sig, CppFunction const& _cppFunction, void testSolidityAgainstCppOnRange(std::string _sig, CppFunction const& _cppFunction, u256 const& _rangeStart, u256 const& _rangeEnd)
u256 const& _rangeStart, u256 const& _rangeEnd)
{ {
for (u256 argument = _rangeStart; argument < _rangeEnd; ++argument) for (u256 argument = _rangeStart; argument < _rangeEnd; ++argument)
{ {
bytes solidityResult = callContractFunction(_sig, argument); bytes solidityResult = callContractFunction(_sig, argument);
bytes cppResult = callCppAndEncodeResult(_cppFunction, argument); bytes cppResult = callCppAndEncodeResult(_cppFunction, argument);
BOOST_CHECK_MESSAGE(solidityResult == cppResult, "Computed values do not match." BOOST_CHECK_MESSAGE(
"\nSolidity: " + toHex(solidityResult) + "\nC++: " + toHex(cppResult) + solidityResult == cppResult,
"\nArgument: " + toHex(encode(argument))); "Computed values do not match.\nSolidity: " +
toHex(solidityResult) +
"\nC++: " +
toHex(cppResult) +
"\nArgument: " +
toHex(encode(argument))
);
} }
} }
@ -135,8 +148,10 @@ protected:
{ {
m_state.addBalance(m_sender, _value); // just in case m_state.addBalance(m_sender, _value); // just in case
eth::Executive executive(m_state, eth::LastHashes(), 0); eth::Executive executive(m_state, eth::LastHashes(), 0);
eth::Transaction t = _isCreation ? eth::Transaction(_value, m_gasPrice, m_gas, _data, 0, KeyPair::create().sec()) eth::Transaction t =
: eth::Transaction(_value, m_gasPrice, m_gas, m_contractAddress, _data, 0, KeyPair::create().sec()); _isCreation ?
eth::Transaction(_value, m_gasPrice, m_gas, _data, 0, KeyPair::create().sec()) :
eth::Transaction(_value, m_gasPrice, m_gas, m_contractAddress, _data, 0, KeyPair::create().sec());
bytes transactionRLP = t.rlp(); bytes transactionRLP = t.rlp();
try try
{ {