Attributes alias and flatten don't seem to work together (serde_json)

[Ploppz]

At least in this example: https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=c2ee5b544b5b939cf67f364d756f5bea

serde_json::from_str gives error

"missing field calculation_status"

even though calculationStatus is there and we have such an alias.

If you move the calculation_status field with attributes directly into the Plate struct (and remove PlateFlags), it works.

[bmc-msft]

I can confirm this is an issue.

Example:

use serde_derive::{Deserialize};

#[derive(Deserialize, Debug)]
pub struct Config {
    #[serde(alias = "field1")]
    pub new_name: Option<String>,

    pub field2: Option<String>,
}

#[derive(Deserialize, Debug)]
pub struct NestedConfig {
    #[serde(flatten)]
    pub common: Config,
}

fn main() {
    let raw = "{\"field1\": \"value1\", \"field2\": \"value2\"}";
    let config: Config = serde_json::from_str(&raw).unwrap();
    println!("{:?}", config);

    let nested: NestedConfig = serde_json::from_str(&raw).unwrap();
    println!("{:?}", nested);
}

This results in:

Config { new_name: Some("value1"), field2: Some("value2") }
NestedConfig { common: Config { new_name: None, field2: Some("value2") } }

[SciStarter]

This looks like a duplicate of #1504

[dtolnay]

Closing as a duplicate of #1504.