ICE using struct MyStruct<'a, 'b> { x: &'a MyTrait<'b>,}

[nielsle]

When I try to compile the following code with rustc --crate-type lib test_error.rs

trait MyTrait<'a> {
    fn yo(&'a self);
}

struct MyStruct<'a, 'b> {
    inner: &'a  MyTrait<'b>,
}

impl<'a,'b> MyStruct<'a, 'b> {

    fn foo_inner(&mut self) {
        self.inner.yo()
    }
}

.. then I get the following ICE:

test_error.rs:12:9: 12:19 error: internal compiler error: cannot relate bound region: ReEarlyBound(10, 0, a) <= ReInfer(0)
This message reflects a bug in the Rust compiler. 
We would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
test_error.rs:12         self.inner.yo()

Possibly related to #5121

[nielsle]

Actually, you only need one lifetime to trigger the ICE

trait MyTrait<'a> {
    fn yo(&'a self);
}

struct MyStruct<'a> {
    inner: &'a  MyTrait<'a>,
}

impl<'a> MyStruct<'a> {

    fn foo_inner(&mut self) {
        self.inner.yo()
    }
}

[flaper87]

This looks like a dup of #5121

[pnkfelix]

(still reproduces, as is, on rustc 0.10-pre (caf17fe 2014-03-21).)