rustdoc: Tuple structs with no fields are marked as having private fields

[Kyuuhachi]

I tried this code:

pub struct MyStruct();
pub enum MyEnum {
    A(),
    B(u8),
}

I would expect this to be documented as-is: as tuple structs/variants with no fields. But instead, rustdoc marks them as having private fields:

pub struct MyStruct(/* private fields */);

pub enum MyEnum {
    A(/* private fields */),
    B(u8),
}

Enums can't even have private fields!

Named structs/variants do not have this issue.

Meta

rustdoc --version --verbose:

rustdoc 1.76.0-nightly (2f8d81f9d 2023-11-21)
binary: rustdoc
commit-hash: 2f8d81f9dbac6b8df982199f69da04a4c8357227
commit-date: 2023-11-21
host: x86_64-unknown-linux-gnu
release: 1.76.0-nightly
LLVM version: 17.0.5

[compiler-errors]

Probably has to do with an .all call treating a list of 0 elements as vacuously true. Should be an easy fix.

[Kyuuhachi]

Guess I'll try fixing it myself, then. Might be a good way to familiarize myself with the test system.