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//@ revisions: run dump
//@[run] run-pass
//@[dump] check-fail
//! Regression test for #145752
//! Ensure that `OneTwo` contains a vptr for `TwoAgain`
#![allow(unused)]
#![cfg_attr(dump, feature(rustc_attrs))]
trait One {
fn one(&self) {
panic!("don't call this");
}
}
impl One for () {}
trait Two {
fn two(&self) {
println!("good");
}
}
impl Two for () {}
trait TwoAgain: Two {}
impl<T: Two> TwoAgain for T {}
trait OneTwo: One + TwoAgain {}
impl<T: One + Two> OneTwo for T {}
fn main() {
(&()).two();
(&() as &dyn OneTwo).two();
(&() as &dyn OneTwo as &dyn Two).two();
// these two used to panic because they called `one` due to #145752
(&() as &dyn OneTwo as &dyn TwoAgain).two();
(&() as &dyn OneTwo as &dyn TwoAgain as &dyn Two).two();
}
#[cfg_attr(dump, rustc_dump_vtable)]
type T = dyn OneTwo;
//[dump]~^ ERROR vtable entries: [
//[dump]~| ERROR MetadataDropInPlace,
//[dump]~| ERROR MetadataSize,
//[dump]~| ERROR MetadataAlign,
//[dump]~| ERROR Method(<dyn OneTwo as One>::one - shim(reify)),
//[dump]~| ERROR Method(<dyn OneTwo as Two>::two - shim(reify)),
//[dump]~| ERROR TraitVPtr(<dyn OneTwo as Two>),
//[dump]~| ERROR TraitVPtr(<dyn OneTwo as TwoAgain>),
//[dump]~| ERROR ]
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