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Add/remove if statement mutation; also remove first instance and bail in all remove mutations

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This commit is contained in:
Bhargava Shastry 2019-12-29 15:02:56 +01:00
parent b6f9a2d380
commit fc93d9e5f8
1 changed files with 57 additions and 0 deletions
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57
test/tools/ossfuzz/protomutators/YulProtoMutator.cpp
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@ -108,7 +108,10 @@ static YulProtoMutator removeBreak(
#endif
for (auto &stmt: *forStmt->mutable_for_body()->mutable_statements())
if (stmt.has_breakstmt())
{
stmt.clear_breakstmt();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif
@ -158,7 +161,10 @@ static YulProtoMutator removeContinue(
#endif
for (auto &stmt: *forStmt->mutable_for_body()->mutable_statements())
if (stmt.has_contstmt())
{
stmt.clear_contstmt();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif
@ -361,7 +367,10 @@ static YulProtoMutator removeLeave(
FunctionDef *funcDef = static_cast<FunctionDef*>(_message);
for (auto &stmt: *funcDef->mutable_block()->mutable_statements())
if (stmt.has_leave())
{
stmt.clear_leave();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif
@ -411,7 +420,55 @@ static YulProtoMutator removeAssignment(
Block *block = static_cast<Block*>(_message);
for (auto &stmt: *block->mutable_statements())
if (stmt.has_assignment())
{
stmt.clear_assignment();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif
}
}
);
/// Add if statement
static YulProtoMutator addIf(
Block::descriptor(),
[](google::protobuf::Message* _message, unsigned int _seed)
{
if (_seed % YulProtoMutator::s_mediumIP == 0) {
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "YULMUTATOR: Add if" << std::endl;
#endif
Block *block = static_cast<Block*>(_message);
Statement *stmt = block->add_statements();
IfStmt *ifStmt = new IfStmt();
stmt->set_allocated_ifstmt(ifStmt);
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif
}
}
);
/// Remove if statement
static YulProtoMutator removeIf(
Block::descriptor(),
[](google::protobuf::Message* _message, unsigned int _seed)
{
if (_seed % YulProtoMutator::s_mediumIP == 1) {
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
std::cout << "YULMUTATOR: Remove if" << std::endl;
#endif
Block *block = static_cast<Block*>(_message);
for (auto &stmt: *block->mutable_statements())
if (stmt.has_ifstmt())
{
stmt.clear_ifstmt();
break;
}
#ifdef DEBUG
std::cout << protobuf_mutator::SaveMessageAsText(*_message) << std::endl;
#endif