&..: unexpected token ..

[huonw]

fn main() { &..; }

<anon>:1:14: 1:16 error: unexpected token: `..`
<anon>:1 fn main() { &..; }
                      ^~

This may be on purpose, but if not, this is useful for passing .. into generic APIs that take references.

[klutzy]

parser-lalr accepts &..; well: (ExprAddrOf (ExprRange <none> <none>)), so at least one of them is buggy.

[dgrunwald]

This is intentional in rustc. .. is only accepted as expression in locations where a..b would also be accepted.

That is, because the parentheses in &(a..b) are required, they are also required in &(..).

[brson]

Seems like expected behavior to me.