rust/src/test/ui/traits/vtable/vtable-vacant.rs

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2021-07-22 10:29:53 -05:00
// build-fail
#![feature(rustc_attrs)]
// B --> A
#[rustc_dump_vtable]
trait A {
fn foo_a1(&self) {}
fn foo_a2(&self) where Self: Sized {}
}
#[rustc_dump_vtable]
trait B: A {
//~^ error Vtable
fn foo_b1(&self) {}
fn foo_b2() where Self: Sized {}
}
struct S;
impl A for S {}
impl B for S {}
fn foo(_: &dyn B) {}
fn main() {
foo(&S);
}