# Patch-overlapping Python context after the fix ## `tests/parser/functions/test_raw_call.py` — `function:test_checkable_raw_call` (lines 292-363) ```python def test_checkable_raw_call(get_contract, assert_tx_failed): target_source = """ baz: int128 @external def fail1(should_raise: bool): if should_raise: raise "fail" # test both paths for raw_call - # they are different depending if callee has or doesn't have returntype # (fail2 fails because of staticcall) @external def fail2(should_raise: bool) -> int128: if should_raise: self.baz = self.baz + 1 return self.baz """ caller_source = """ @external @view def foo(_addr: address, should_raise: bool) -> uint256: success: bool = True response: Bytes[32] = b"" success, response = raw_call( _addr, _abi_encode(should_raise, method_id=method_id("fail1(bool)")), max_outsize=32, is_static_call=True, revert_on_failure=False, ) assert success == (not should_raise) return 1 @external @view def bar(_addr: address, should_raise: bool) -> uint256: success: bool = True response: Bytes[32] = b"" success, response = raw_call( _addr, _abi_encode(should_raise, method_id=method_id("fail2(bool)")), max_outsize=32, is_static_call=True, revert_on_failure=False, ) assert success == (not should_raise) return 2 # test max_outsize not set case @external @nonpayable def baz(_addr: address, should_raise: bool) -> uint256: success: bool = True success = raw_call( _addr, _abi_encode(should_raise, method_id=method_id("fail1(bool)")), revert_on_failure=False, ) assert success == (not should_raise) return 3 """ target = get_contract(target_source) caller = get_contract(caller_source) assert caller.foo(target.address, True) == 1 assert caller.foo(target.address, False) == 1 assert caller.bar(target.address, True) == 2 assert caller.bar(target.address, False) == 2 assert caller.baz(target.address, True) == 3 assert caller.baz(target.address, False) == 3 ``` ## `vyper/builtins/functions.py` — `class:RawCall` (lines 1067-1218) ```python class RawCall(BuiltinFunction): _id = "raw_call" _inputs = [("to", AddressT()), ("data", BytesT.any())] _kwargs = { "max_outsize": KwargSettings(UINT256_T, 0, require_literal=True), "gas": KwargSettings(UINT256_T, "gas"), "value": KwargSettings(UINT256_T, zero_value), "is_delegate_call": KwargSettings(BoolT(), False, require_literal=True), "is_static_call": KwargSettings(BoolT(), False, require_literal=True), "revert_on_failure": KwargSettings(BoolT(), True, require_literal=True), } _return_type = None def fetch_call_return(self, node): self._validate_arg_types(node) kwargz = {i.arg: i.value for i in node.keywords} outsize = kwargz.get("max_outsize") revert_on_failure = kwargz.get("revert_on_failure") revert_on_failure = revert_on_failure.value if revert_on_failure is not None else True if outsize is None: if revert_on_failure: return None return BoolT() if not isinstance(outsize, vy_ast.Int) or outsize.value < 0: raise if outsize.value: return_type = BytesT() return_type.set_min_length(outsize.value) if revert_on_failure: return return_type return TupleT([BoolT(), return_type]) def infer_arg_types(self, node): self._validate_arg_types(node) # return a concrete type for `data` data_type = get_possible_types_from_node(node.args[1]).pop() return [self._inputs[0][1], data_type] @process_inputs def build_IR(self, expr, args, kwargs, context): to, data = args # TODO: must compile in source code order, left-to-right gas, value, outsize, delegate_call, static_call, revert_on_failure = ( kwargs["gas"], kwargs["value"], kwargs["max_outsize"], kwargs["is_delegate_call"], kwargs["is_static_call"], kwargs["revert_on_failure"], ) if delegate_call and static_call: raise ArgumentException( "Call may use one of `is_delegate_call` or `is_static_call`, not both", expr ) if not static_call and context.is_constant(): raise StateAccessViolation( f"Cannot make modifying calls from {context.pp_constancy()}," " use `is_static_call=True` to perform this action", expr, ) if data.value == "~calldata": call_ir = ["with", "mem_ofst", "msize"] args_ofst = ["seq", ["calldatacopy", "mem_ofst", 0, "calldatasize"], "mem_ofst"] args_len = "calldatasize" else: # some gymnastics to propagate constants (if eval_input_buf # returns a static memory location) eval_input_buf = ensure_in_memory(data, context) input_buf = eval_seq(eval_input_buf) if input_buf is None: call_ir = ["with", "arg_buf", eval_input_buf] input_buf = IRnode.from_list("arg_buf") else: call_ir = ["seq", eval_input_buf] args_ofst = add_ofst(input_buf, 32) args_len = ["mload", input_buf] output_node = IRnode.from_list( context.new_internal_variable(BytesT(outsize)), typ=BytesT(outsize), location=MEMORY ) bool_ty = BoolT() # build IR for call or delegatecall common_call_args = [ args_ofst, args_len, # if there is no return value, the return offset can be 0 add_ofst(output_node, 32) if outsize else 0, outsize, ] if delegate_call: call_op = ["delegatecall", gas, to, *common_call_args] elif static_call: call_op = ["staticcall", gas, to, *common_call_args] else: call_op = ["call", gas, to, value, *common_call_args] call_ir += [call_op] # build sequence IR if outsize: # return minimum of outsize and returndatasize size = ["select", ["lt", outsize, "returndatasize"], outsize, "returndatasize"] # store output size and return output location store_output_size = ["seq", ["mstore", output_node, size], output_node] bytes_ty = BytesT(outsize) if revert_on_failure: typ = bytes_ty # check the call success flag, and store returndata in memory ret_ir = ["seq", check_external_call(call_ir), store_output_size] return IRnode.from_list(ret_ir, typ=typ, location=MEMORY) else: typ = TupleT([bool_ty, bytes_ty]) ret_ir = [ "multi", # use IRnode.from_list to make sure the types are # set properly on the "multi" members IRnode.from_list(call_ir, typ=bool_ty), IRnode.from_list(store_output_size, typ=bytes_ty, location=MEMORY), ] # return an IR tuple of call success flag and returndata pointer return IRnode.from_list(ret_ir, typ=typ) # max_outsize is 0. if not revert_on_failure: # return call flag as stack item typ = bool_ty return IRnode.from_list(call_ir, typ=typ) else: # check the call success flag and don't return anything ret_ir = check_external_call(call_ir) return IRnode.from_list(ret_ir, typ=None) raise CompilerPanic("unreachable!") ``` ## `vyper/builtins/functions.py` — `function:RawCall.build_IR` (lines 1111-1218) ```python def build_IR(self, expr, args, kwargs, context): to, data = args # TODO: must compile in source code order, left-to-right gas, value, outsize, delegate_call, static_call, revert_on_failure = ( kwargs["gas"], kwargs["value"], kwargs["max_outsize"], kwargs["is_delegate_call"], kwargs["is_static_call"], kwargs["revert_on_failure"], ) if delegate_call and static_call: raise ArgumentException( "Call may use one of `is_delegate_call` or `is_static_call`, not both", expr ) if not static_call and context.is_constant(): raise StateAccessViolation( f"Cannot make modifying calls from {context.pp_constancy()}," " use `is_static_call=True` to perform this action", expr, ) if data.value == "~calldata": call_ir = ["with", "mem_ofst", "msize"] args_ofst = ["seq", ["calldatacopy", "mem_ofst", 0, "calldatasize"], "mem_ofst"] args_len = "calldatasize" else: # some gymnastics to propagate constants (if eval_input_buf # returns a static memory location) eval_input_buf = ensure_in_memory(data, context) input_buf = eval_seq(eval_input_buf) if input_buf is None: call_ir = ["with", "arg_buf", eval_input_buf] input_buf = IRnode.from_list("arg_buf") else: call_ir = ["seq", eval_input_buf] args_ofst = add_ofst(input_buf, 32) args_len = ["mload", input_buf] output_node = IRnode.from_list( context.new_internal_variable(BytesT(outsize)), typ=BytesT(outsize), location=MEMORY ) bool_ty = BoolT() # build IR for call or delegatecall common_call_args = [ args_ofst, args_len, # if there is no return value, the return offset can be 0 add_ofst(output_node, 32) if outsize else 0, outsize, ] if delegate_call: call_op = ["delegatecall", gas, to, *common_call_args] elif static_call: call_op = ["staticcall", gas, to, *common_call_args] else: call_op = ["call", gas, to, value, *common_call_args] call_ir += [call_op] # build sequence IR if outsize: # return minimum of outsize and returndatasize size = ["select", ["lt", outsize, "returndatasize"], outsize, "returndatasize"] # store output size and return output location store_output_size = ["seq", ["mstore", output_node, size], output_node] bytes_ty = BytesT(outsize) if revert_on_failure: typ = bytes_ty # check the call success flag, and store returndata in memory ret_ir = ["seq", check_external_call(call_ir), store_output_size] return IRnode.from_list(ret_ir, typ=typ, location=MEMORY) else: typ = TupleT([bool_ty, bytes_ty]) ret_ir = [ "multi", # use IRnode.from_list to make sure the types are # set properly on the "multi" members IRnode.from_list(call_ir, typ=bool_ty), IRnode.from_list(store_output_size, typ=bytes_ty, location=MEMORY), ] # return an IR tuple of call success flag and returndata pointer return IRnode.from_list(ret_ir, typ=typ) # max_outsize is 0. if not revert_on_failure: # return call flag as stack item typ = bool_ty return IRnode.from_list(call_ir, typ=typ) else: # check the call success flag and don't return anything ret_ir = check_external_call(call_ir) return IRnode.from_list(ret_ir, typ=None) raise CompilerPanic("unreachable!") ```