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// Taken directly from that issue.
//
// This test detected that we didn't correctly resolve
// inference variables when computing implied bounds.
//
// check-pass
pub trait BuilderFn<'a> {
type Output;
}
impl<'a, F, Out> BuilderFn<'a> for F
where
F: FnOnce(&'a mut ()) -> Out,
{
type Output = Out;
}
pub trait ConstructionFirm {
type Builder: for<'a> BuilderFn<'a>;
}
pub trait Campus<T>
where
T: ConstructionFirm,
{
fn add_building(
&mut self,
building: &mut <<T as ConstructionFirm>::Builder as BuilderFn<'_>>::Output,
);
}
struct ArchitectsInc {}
impl ConstructionFirm for ArchitectsInc {
type Builder = fn(&mut ()) -> PrettyCondo<'_>;
}
struct PrettyCondo<'a> {
_marker: &'a mut (),
}
struct CondoEstate {}
impl Campus<ArchitectsInc> for CondoEstate {
fn add_building(&mut self, _building: &mut PrettyCondo<'_>) {
todo!()
}
}
fn main() {}
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