[rustc.git] / src / test / ui / issues / issue-5008-borrowed-traitobject-method-call.rs

// run-pass
/*

#5008 cast to &Trait causes code to segfault on method call

It fixes itself if the &Trait is changed to @Trait.
*/

trait Debuggable {
    fn debug_name(&self) -> String;
}

#[derive(Clone)]
struct Thing {
    name: String,
}

impl Thing {
    fn new() -> Thing { Thing { name: "dummy".to_string() } }
}

impl Debuggable for Thing {
    fn debug_name(&self) -> String { self.name.clone() }
}

fn print_name(x: &dyn Debuggable)
{
    println!("debug_name = {}", x.debug_name());
}

pub fn main() {
    let thing = Thing::new();
    print_name(&thing as &dyn Debuggable);
}
Commit	Line	Data
b7449926	1	// run-pass
1a4d82fc JJ	2	/*
	3
	4	#5008 cast to &Trait causes code to segfault on method call
	5
	6	It fixes itself if the &Trait is changed to @Trait.
	7	*/
	8
	9	trait Debuggable {
	10	fn debug_name(&self) -> String;
	11	}
	12
	13	#[derive(Clone)]
	14	struct Thing {
	15	name: String,
	16	}
	17
	18	impl Thing {
	19	fn new() -> Thing { Thing { name: "dummy".to_string() } }
	20	}
	21
	22	impl Debuggable for Thing {
	23	fn debug_name(&self) -> String { self.name.clone() }
	24	}
	25
dc9dc135	26	fn print_name(x: &dyn Debuggable)
1a4d82fc JJ	27	{
	28	println!("debug_name = {}", x.debug_name());
	29	}
	30
	31	pub fn main() {
	32	let thing = Thing::new();
dc9dc135	33	print_name(&thing as &dyn Debuggable);
1a4d82fc	34	}