src/test/ui/regions/regions-close-over-type-parameter-multiple.rs

#![feature(box_syntax)]

// Various tests where we over type parameters with multiple lifetime
// bounds.

trait SomeTrait { fn get(&self) -> isize; }

fn make_object_good1<'a,'b,A:SomeTrait+'a+'b>(v: A) -> Box<dyn SomeTrait + 'a> {
    // A outlives 'a AND 'b...
    box v as Box<dyn SomeTrait + 'a> // ...hence this type is safe.
}

fn make_object_good2<'a,'b,A:SomeTrait+'a+'b>(v: A) -> Box<dyn SomeTrait + 'b> {
    // A outlives 'a AND 'b...
    box v as Box<dyn SomeTrait + 'b> // ...hence this type is safe.
}

fn make_object_bad<'a,'b,'c,A:SomeTrait+'a+'b>(v: A) -> Box<dyn SomeTrait + 'c> {
    // A outlives 'a AND 'b...but not 'c.
    box v as Box<dyn SomeTrait + 'a> //~ ERROR cannot infer an appropriate lifetime
}

fn main() {
}