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rust/tests/ui/impl-trait/precise-capturing/parenthesized.rs

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// Ensure that we forbid parenthesized use-bounds. In the future we might want
// to lift this restriction but for now they bear no use whatsoever.
fn f() -> impl Sized + (use<>) {}
//~^ ERROR precise capturing lists may not be parenthesized
//~| HELP remove the parentheses
fn main() {}