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// Test that an impl with only one bound region `'a` cannot be used to
// satisfy a constraint where there are two bound regions.
trait Foo<X> {
fn foo(&self, x: X) { }
}
fn want_foo2<T>()
where T : for<'a,'b> Foo<(&'a isize, &'b isize)>
{
}
fn want_foo1<T>()
where T : for<'z> Foo<(&'z isize, &'z isize)>
{
}
// Expressed as a where clause
struct SomeStruct;
impl<'a> Foo<(&'a isize, &'a isize)> for SomeStruct
{
}
fn a() { want_foo1::<SomeStruct>(); } // OK -- foo wants just one region
fn b() { want_foo2::<SomeStruct>(); }
//~^ ERROR implementation of
//~| ERROR implementation of
fn main() { }
|
