Weird stack overflow issue with single struct

[kardeiz]

When I run the following code:

#[derive(Debug)]
pub struct Foo {
    baz: i32
}

impl serde::Serialize for Foo {
    fn serialize<S>(&self, serializer: S) -> core::result::Result<S::Ok, S::Error>
    where
        S: serde::Serializer,
    {
        #[derive(serde_derive :: Serialize)]
        struct Inner<'a>(&'a i32);
        let inner = Inner(&self.baz);
        serde::Serialize::serialize(&inner, serializer)
    }
}

// #[derive(serde_derive::Serialize)]
// pub struct Bar {
//     baz: i32
// }

fn main() {}

I get

thread 'main' has overflowed its stack
fatal runtime error: stack overflow

However, if I uncomment the Bar struct, it runs just fine.

This is with serde 1.0.85. It doesn't seem to be the same as the other open SO issues.

[dtolnay]

This is a compiler bug: rust-lang/rust#55779

[kardeiz]

Okay, thanks for the quick response! Sorry for posting here; I'm not familiar enough with rustc stuff and hadn't encountered this elsewhere. I'll follow the linked issue and close this now.