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Bug fix in enum ranging and add/remove revert mutation

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This commit is contained in:
Bhargava Shastry 2020-01-04 18:07:33 +01:00
parent 3d8b9f03fe
commit bec86f7c03
1 changed files with 58 additions and 1 deletions
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59
test/tools/ossfuzz/protomutators/YulProtoMutator.cpp
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@ -891,6 +891,63 @@ static YulProtoMutator removeGenericFor(
}
);
/// Add revert stmt
static YulProtoMutator addTerminatingStmt(
Block::descriptor(),
[](google::protobuf::Message* _message, unsigned int _seed)
{
if (_seed % YulProtoMutator::s_mediumIP == 0) {
#ifdef DEBUG
std::cout << "----------------------------------" << std::endl;
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "YULMUTATOR: Add terminating stmt" << std::endl;
#endif
auto block = static_cast<Block*>(_message);
auto stmt = block->add_statements();
auto termStmt = new TerminatingStmt();
auto revertStmt = new RetRevStmt();
revertStmt->set_stmt(RetRevStmt::REVERT);
revertStmt->set_allocated_pos(YulProtoMutator::litExpression(0));
revertStmt->set_allocated_size(YulProtoMutator::litExpression(0));
termStmt->set_allocated_ret_rev(revertStmt);
stmt->set_allocated_terminatestmt(termStmt);
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "----------------------------------" << std::endl;
#endif
}
}
);
/// Remove revert statement
static YulProtoMutator removeRevertStmt(
Block::descriptor(),
[](google::protobuf::Message* _message, unsigned int _seed)
{
if (_seed % YulProtoMutator::s_mediumIP == 1) {
#ifdef DEBUG
std::cout << "----------------------------------" << std::endl;
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "YULMUTATOR: Remove revert stmt" << std::endl;
#endif
auto block = static_cast<Block*>(_message);
for (auto &stmt: *block->mutable_statements())
if (stmt.has_terminatestmt() &&
stmt.terminatestmt().has_ret_rev() &&
stmt.terminatestmt().ret_rev().stmt() == RetRevStmt::REVERT
)
{
stmt.clear_terminatestmt();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "----------------------------------" << std::endl;
#endif
}
}
);
Literal* YulProtoMutator::intLiteral(unsigned _value)
{
auto lit = new Literal();
@ -982,7 +1039,7 @@ void YulProtoMutator::configureCall(FunctionCall *_call, unsigned int _seed)
template <typename T>
T YulProtoMutator::EnumTypeConverter<T>::validEnum(unsigned _seed)
{
auto ret = static_cast<T>(_seed % (enumMax() + 1) + enumMin());
auto ret = static_cast<T>(_seed % (enumMax() - enumMin() + 1) + enumMin());
if constexpr (std::is_same_v<std::decay_t<T>, FunctionCall_Returns>)
yulAssert(FunctionCall_Returns_IsValid(ret), "Yul proto mutator: Invalid enum");
else if constexpr (std::is_same_v<std::decay_t<T>, StoreFunc_Storage>)