mirror of https://github.com/rust-lang/rust
25 lines
645 B
Rust
25 lines
645 B
Rust
#![feature(impl_trait_in_fn_trait_return)]
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use std::fmt::Debug;
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fn a() -> impl Fn(&u8) -> (impl Debug + '_) {
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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|x| x
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}
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fn b() -> impl for<'a> Fn(&'a u8) -> (impl Debug + 'a) {
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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|x| x
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}
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fn c() -> impl for<'a> Fn(&'a u8) -> (impl Debug + '_) {
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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|x| x
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}
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fn d() -> impl Fn() -> (impl Debug + '_) {
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//~^ ERROR missing lifetime specifier
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|| ()
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}
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fn main() {}
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