Borrowing strings seems broken

[emberian]

#[crate_type="lib"];

struct A {
    a: ~str
}

fn borrow<'a>(binding: &'a A) -> &'a str {
    match binding.a.as_slice() {
        "in" => &'a "in_",
        "ref" => &'a "ref_",
        ident => ident
    }
}

foo.rs:8:11: 8:33 error: cannot infer an appropriate lifetime for autoref due to conflicting requirements
foo.rs:8     match binding.a.as_slice() {
                   ^~~~~~~~~~~~~~~~~~~~~~
foo.rs:8:11: 8:20 note: first, the lifetime cannot outlive the expression at 8:10...
foo.rs:8     match binding.a.as_slice() {
                   ^~~~~~~~~
foo.rs:8:11: 8:20 note: ...so that automatically reference is valid at the time of borrow
foo.rs:8     match binding.a.as_slice() {
                   ^~~~~~~~~
foo.rs:8:11: 8:33 note: but, the lifetime must be valid for the method call at 8:10...
foo.rs:8     match binding.a.as_slice() {
                   ^~~~~~~~~~~~~~~~~~~~~~
foo.rs:8:11: 8:20 note: ...so that method receiver is valid for the method call
foo.rs:8     match binding.a.as_slice() {
                   ^~~~~~~~~

This used to work.

cc @nikomatsakis

[emberian]

(This is a stripped exerpt from gl-rs)

[nikomatsakis]

Hmm, the issue is almost certainly the &'a "in_" expression. I think I broke something in there. I expect you could make the code compile by just writing "in" => "in_". This is related to #11641

[emberian]

#[crate_type="lib"];

struct A {
    a: ~str
}

fn borrow<'a>(binding: &'a A) -> &'a str {
    match binding.a.as_slice() {
        "in" => "in_",
        "ref" => "ref_",
        ident => ident
    }
}

still doesn't compile (same error).

[ghost]

Seems like it's fixed but may need a test.