bug: Method must be implemented by the inherited class #4725
Description
Version Information
- vyper Version (output of
vyper --version):0.4.3 - OS: linux
- Python Version (output of
python --version):3.13.3
What's your issue about?
# pragma version ~=0.4.3
EXTRA_ARGS_V1_TAG: public(constant(bytes4)) = 0x92FD1338 # == `bytes4(keccak256("VRF ExtraArgsV1"))`.
struct ExtraArgsV1:
nativePayment: bool
@internal
@view
def _args_to_bytes(extra_args: ExtraArgsV1) -> Bytes[1_024]:
return abi_encode(ExtraArgsV1, method_id=EXTRA_ARGS_V1_TAG)will lead to the compilation error:
vyper.exceptions.CompilerPanic: Method must be implemented by the inherited class
contract "test.vy:11", function "_args_to_bytes", line 11:4
10 def _args_to_bytes(extra_args: ExtraArgsV1) -> Bytes[1_024]:
---> 11 return abi_encode(ExtraArgsV1, method_id=EXTRA_ARGS_V1_TAG)
------------^
12
This is an unhandled internal compiler error. Please create an issue on Github to notify the developers!
https://github.com/vyperlang/vyper/issues/new?template=bug.mdHow can it be fixed?
Requires some skills but I have trust in you 😄. Joking aside, you should have an error message saying "Did you mean extra_args?".