internal compiler error with impl Aaa for &mut Aaa

[stepancheg]

Code:

trait Aaa {}

impl<'a> Aaa for &'a mut Aaa + 'a {}

struct Bar<'a> {
    writer: &'a mut Aaa + 'a,
}

fn baz(_: &mut Aaa) {
}

fn foo<'a>(mut bar: Bar<'a>) {
    baz(&mut bar.writer);
}

fn main() {
}

error: internal compiler error: trying to take the sizing type of Aaa+'a, an unsized type

[nodakai]

@stepancheg Can you check if this is the same issue as #17351 ?

[stepancheg]

@nodakai I don't know, looks similar.

[nodakai]

Added parenthesis as per PR #19298 and then it compiled fine.

trait Aaa {}

impl<'a> Aaa for &'a mut (Aaa + 'a) {}

struct Bar<'a> {
    writer: &'a mut (Aaa + 'a),
}

fn baz(_: &mut Aaa) {
}

fn foo<'a>(mut bar: Bar<'a>) {
    baz(&mut bar.writer);
}

fn main() {
}