mirror of https://github.com/rust-lang/rust
33 lines
471 B
Rust
33 lines
471 B
Rust
//@ check-pass
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trait Base<'f> {
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type Assoc;
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fn do_something(&self);
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}
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trait ForAnyLifetime: for<'f> Base<'f> {}
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impl<T> ForAnyLifetime for T where T: for<'f> Base<'f> {}
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trait CanBeDynamic: ForAnyLifetime + for<'f> Base<'f, Assoc = ()> {}
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fn foo(a: &dyn CanBeDynamic) {
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a.do_something();
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}
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struct S;
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impl<'a> Base<'a> for S {
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type Assoc = ();
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fn do_something(&self) {}
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}
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impl CanBeDynamic for S {}
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fn main() {
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let s = S;
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foo(&s);
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}
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