ICE when matching an enum from a sibling module with a {} variant

[SimonSapin]

I get ICEs with rust f348465 (used in Servo) for the following code. There is no error if the enum and match are in the same module, or if the enum has no {} variant.

a.rs:

use b::*;
mod b;

pub fn fuuu(a: A) -> int {
    match a {
        lol => 42,
        _ => 1,
    }
}

b.rs

pub enum A {
    lol,
    fuu{a: int},
}

c.rc

pub mod a;
pub mod b;
fn main(){}

Output:

% RUST_LOG=rustc=1,::rt::backtrace rustc c.rc 
rust: task failed at 'struct variant kinds unimpl in enum_variants', /home/simon/projects/rust/src/librustc/middle/ty.rs:4098
/home/simon/non-packages/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fcd62be870b]
/home/simon/non-packages/bin/../lib/librustrt.so(+0x2a3a9)[0x7fcd62bf93a9]
/home/simon/non-packages/bin/../lib/librustrt.so(upcall_fail+0x198)[0x7fcd62bea658]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys13begin_unwind_16_615cb041c655a976_07preE+0x63)[0x7fcd64c28cc3]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x123c52)[0x7fcd64c28c52]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys14__extensions__9meth_89449fail_with17_ac9eb45dc42bd6906_07preE+0x6b)[0x7fcd64b6835b]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x41fb20)[0x7fcd6323cb20]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x41f78c)[0x7fcd6323c78c]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle2ty13enum_variants16_bfaf9f09960f24c6_07preE+0x430)[0x7fcd62f562e0]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle2ty20enum_variant_with_id16_28d184f51b9a5546_07preE+0x6e)[0x7fcd630394fe]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check6_match17check_pat_variant16_89cbaa367e8eb636_07preE+0x825)[0x7fcd63305e55]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check6_match9check_pat17_aacdb0bc641839d36_07preE+0x7286)[0x7fcd63301216]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check6_match11check_match17_b2b718ab8c45a4176_07preE+0x409)[0x7fcd632f4e29]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check23check_expr_with_unifier17_de73127bc1f720266_07preE+0x5b52)[0x7fcd633de022]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check24check_expr_with_opt_hint17_3da35bbcf3bd40d56_07preE+0xa5)[0x7fcd633fa195]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check25check_block_with_expected16_d54a8e70ba2c25e6_07preE+0x7bd)[0x7fcd633a386d]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check8check_fn15_4e26cd1528d9fd6_07preE+0x15fd)[0x7fcd633a175d]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check13check_bare_fn14_db4ccfa8eddcf6_07preE+0x1e6)[0x7fcd6339fbf6]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check10check_item17_3b3d66d6c0e681126_07preE+0x56a)[0x7fcd6339eb0a]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x5813fd)[0x7fcd6339e3fd]
/home/simon/non-packages/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0xf90c7)[0x7fcd63e7c0c7]
/home/simon/non-packages/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0xf86aa)[0x7fcd63e7b6aa]
/home/simon/non-packages/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0xf9733)[0x7fcd63e7c733]
/home/simon/non-packages/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0xf86aa)[0x7fcd63e7b6aa]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x2d8dd1)[0x7fcd630f5dd1]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck5check16check_item_types17_9b946a891a2a91716_07preE+0x43e)[0x7fcd6339e18e]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x7180a2)[0x7fcd635350a2]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0x717df9)[0x7fcd63534df9]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6middle6typeck11check_crate17_54349f39c7ca78196_07preE+0x295)[0x7fcd63532485]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver12compile_rest17_32718fb030861ff16_07preE+0x1555)[0x7fcd6384eb75]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver12compile_upto16_3b13f5438b2e4f86_07preE+0x192)[0x7fcd63854dd2]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver13compile_input17_812b75735864b8556_07preE+0x107)[0x7fcd63855257]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN12run_compiler17_e6dc2544c438b05b6_07preE+0x2bbb)[0x7fcd63884d5b]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa7a80e)[0x7fcd6389780e]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa781bc)[0x7fcd638951bc]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa71bec)[0x7fcd6388ebec]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa7aae8)[0x7fcd63897ae8]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0xece75)[0x7fcd64bf1e75]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x169058)[0x7fcd64c6e058]
/home/simon/non-packages/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x24)[0x7fcd62be9084]
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/simon/projects/rust/src/librustc/rustc.rc:355
/home/simon/non-packages/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fcd62be870b]
/home/simon/non-packages/bin/../lib/librustrt.so(+0x2a3a9)[0x7fcd62bf93a9]
/home/simon/non-packages/bin/../lib/librustrt.so(upcall_fail+0x198)[0x7fcd62bea658]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys13begin_unwind_16_615cb041c655a976_07preE+0x63)[0x7fcd64c28cc3]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x123d72)[0x7fcd64c28d72]
/home/simon/non-packages/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0xc3c34)[0x7fcd64bc8c34]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN7monitor15_f69b167efde7bb6_07preE+0x2415)[0x7fcd63888355]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa7aae8)[0x7fcd63897ae8]
/home/simon/non-packages/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN4main15_c4de63b748e03d6_07preE+0x69)[0x7fcd63897749]
rustc(_rust_main+0x2e)[0x400c0e]
/home/simon/non-packages/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x24)[0x7fcd62be9084]
rust: domain main @0x193d410 root task failed

[SimonSapin]

(Redacted incorrect comment. I was just confused.)

[pnkfelix]

works for me on rustc 0.8-pre (45c3ca7 2013-09-04 11:55:52 -0700) on my mac, closing.

@SimonSapin reopen if you see it again.