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29 lines
716 B
Rust
29 lines
716 B
Rust
// this used to cause stack overflows
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trait Hrtb<'a> {
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type Assoc;
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}
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impl<'a> Hrtb<'a> for () {
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type Assoc = ();
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}
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impl<'a> Hrtb<'a> for &'a () {
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type Assoc = ();
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}
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fn make_impl() -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {}
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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fn make_weird_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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&()
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}
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fn make_bad_impl<'b>(x: &'b ()) -> impl for<'a> Hrtb<'a, Assoc = impl Send + 'a> {
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//~^ ERROR `impl Trait` cannot capture higher-ranked lifetime from outer `impl Trait`
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x
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}
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fn main() {}
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