What it does

PhantomData::default() is quite common https://github.com/search?q=language%3ARust+%22PhantomData%3A%3Adefault%28%29%22&type=code&ref=advsearch though of course the ::default() is actually redundant.

Perhaps a lint that suggests removing the ::default() would be useful?.

Lint Name

No response

Category

style, pedantic

Advantage

Shorter, ostensibly avoids a function call.

Drawbacks

Perhaps

Foo {
    _marker: PhantomData::default()
}

makes more sense to some people than the slightly special

Foo {
    _marker: PhantomData
}

Example

Foo {
    _marker: PhantomData::default()
}

Could be written as:

Foo {
    _marker: PhantomData
}