Unexpected parse with unit tail expressions

[brson]

I tried to type something like this recently

fn foo() { 4 }

async fn main() {
    foo()
    ()
}

It results in an unexpected error:

Error: expected something callable, found an unsigned integer
   ╭─[input.dada:4:5]
   │
 4 │     foo()
   ·     ──┬──  
   ·       ╰──── here
───╯

Without statement terminators, there are situations where a tail expression has a type but that is not desirable. The obvious solution is to end the block with (), but it parses wrong. Writing { () } does work but is unwieldy.

[brson]

Ah, one can also write { } to produce a unit, and the compiler could heuristically suggest it. Still though, this seems like an unfortunate thing to run into.

[brson]

Parenthesized exprs don't work yet but there may be similar issues with things like

fn main() {
    foo()
    (bar).baz
}