42 lines
758 B
Rust
42 lines
758 B
Rust
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// compile-pass
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// Check that method probing ObjectCandidate works in the presence of
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// auto traits and/or HRTBs.
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mod internal {
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pub trait MyObject<'a> {
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type Output;
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fn foo(&self) -> Self::Output;
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}
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impl<'a> MyObject<'a> for () {
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type Output = &'a u32;
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fn foo(&self) -> Self::Output { &4 }
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}
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}
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fn t1(d: &dyn for<'a> internal::MyObject<'a, Output=&'a u32>) {
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d.foo();
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}
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fn t2(d: &dyn internal::MyObject<'static, Output=&'static u32>) {
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d.foo();
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}
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fn t3(d: &(dyn for<'a> internal::MyObject<'a, Output=&'a u32> + Sync)) {
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d.foo();
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}
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fn t4(d: &(dyn internal::MyObject<'static, Output=&'static u32> + Sync)) {
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d.foo();
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}
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fn main() {
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t1(&());
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t2(&());
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t3(&());
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t4(&());
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}
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