With a List[int] config option (structured config), a single integer is still parsed as an integer

[odelalleau]

This is a copy of facebookresearch/hydra#758 moved to OmegaConf as per @omry 's request.

The following code runs fine while it should raise an error since fudge is supposed to be a list of integers, not an integer.

from dataclasses import dataclass, field
from typing import List
from omegaconf import OmegaConf

@dataclass
class Config:
    fudge: List[int] = field(default_factory=lambda: [])

cfg = OmegaConf.structured(Config)

cfg.fudge = 1

[omry]

Thanks for reporting!