ICE with using a condition from another crate

[sonwow]

Getting an ICE trying to use a condition from another crate.

// condi.rc
#[link(name = "condi",
         vers = "0.1")];
#[crate_type = "lib"];

condition! {
    oops: int -> int;
}

// test.rs
extern mod condi;

fn main() {
    condi::oops::cond.raise(1);
}

• rustc --lib condi.rc
• rustc -L . test.rs

ICE

$ RUST_LOG=rustc=1,::rt::backtrace rustc -L . test.rs
rust: task failed at 'lookup_item: id not found: 24', /home/sonwow/project/rust/rust/src/librustc/metadata/decoder.rs:91
/home/sonwow/project/rust/rust/build/x86_64-unknown-linux-gnu/stage2/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fca25deaa5b]
/home/sonwow/project/rust/rust/build/x86_64-unknown-linux-gnu/stage2/bin/../lib/librustrt.so(+0x2a969)[0x7fca25dfb969]
/home/sonwow/project/rust/rust/build/x86_64-unknown-linux-gnu/stage2/bin/../lib/librustrt.so(upcall_fail+0x198)[0x7fca25dec858]
/home/sonwow/project/rust/rust/build/x86_64-unknown-linux-gnu/stage2/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xf5cab)[0x7fca27867cab]
......
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=1,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: task failed at 'explicit failure', /home/sonwow/project/rust/rust/src/librustc/rustc.rc:359

However, there is no error if the condition is in the same crate.

// condi.rs
pub condition! {
    oops: int -> int;
}

// test.rs
pub mod condi;

fn main() {
    condi::oops::cond.raise(1);
}

• rustc test.rs

[sonwow]

I can't reproduce anymore.

[sonwow]

There is an ICE again.

[brson]

Nominating this for a milestone.

[graydon]

accepted for production ready

(this is happening, if it is, because of linkage address differing from real)

[pnkfelix]

Narrowing down to something tiny. (Evidence at this point provides hint that there's something wonky with how structs and/or impls with 'self region parameters are being linked.) I will post link to narrower bug after I file it.

[alexcrichton]

This has been fixed, flagging that it needs a test.

[graydon]

Tests incoming.