ICE with crate & polymorphic constructor function

[rntz]

In somelib.rc:

#[crate_type = "lib"];
#[link(name="somelib", vers="0.0")];
pub struct S<T>(Option<T>);
pub fn mk<T>() -> S<T> { S(None) }

In client.rs:

extern mod somelib;
fn main() { somelib::mk::<int>(); }

Do the following:

$ rustc somelib.rc
$ rustc -L. client.rs
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

Notes:

• Does not require Option. pub struct S<T>(~[T]) or pub struct S,T>(()) also
  cause ICEs.
• Requires polymorphism; pub struct S(()) does not cause an ICE.

Backtrace follows:

rust: task failed at 'lookup_item: id not found: 8', /home/rntz/s/rust/src/librustc/metadata/decoder.rs:137
/home/rntz/p/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fae9e3b7b8b]
/home/rntz/p/bin/../lib/librustrt.so(+0x2e359)[0x7fae9e3cb359]
/home/rntz/p/bin/../lib/librustrt.so(upcall_fail+0x1b0)[0x7fae9e3ba340]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xaf0cb)[0x7fae9fc070cb]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x3f4be)[0x7fae9fb974be]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x753604)[0x7fae9ed4d604]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN8metadata7decoder18maybe_get_item_ast14_6bb9245fa0cf33_06E+0x19f)[0x7fae9ed52c3f]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN8metadata7csearch18maybe_get_item_ast17_c51398c1464d7ab83_06E+0x8d)[0x7fae9e7065ad]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans6inline24maybe_instantiate_inline16_1ffff7ac8aaa2a43_06E+0x3e6)[0x7fae9e6e1926]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans8type_use13type_uses_for16_5ac4ed03f596ec23_06E+0x789)[0x7fae9e71b0d9]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans8type_use13mark_for_expr17_f4783860c9d7bf183_06E+0x7a7)[0x7fae9e8bff77]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x2caedc)[0x7fae9e8c4edc]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x2cab00)[0x7fae9e8c4b00]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x2cd6de)[0x7fae9e8c76de]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x2cd5c0)[0x7fae9e8c75c0]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans8type_use11handle_body16_5ed46d80c4588b43_06E+0x9e3)[0x7fae9e8bbb63]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans8type_use13type_uses_for16_5ac4ed03f596ec23_06E+0x33cf)[0x7fae9e71dd1f]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans12monomorphize14monomorphic_fn16_8985345158b2c843_06E+0x317)[0x7fae9e715807]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans6callee25trans_fn_ref_with_vtables17_26759f80cc3ed23e3_06E+0xf7c)[0x7fae9e7c9b8c]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bd9ac)[0x7fae9edb79ac]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans6callee12trans_fn_ref16_46d37cdacaf94123_06E+0xa7)[0x7fae9e7c65d7]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans6callee5trans17_786028e87c1cc5683_06E+0x367)[0x7fae9e7c38e7]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x1de86c)[0x7fae9e7d886c]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base10with_scope16_f9b697c7991b8983_06E+0x440)[0x7fae9e79c2f0]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans6callee10trans_call16_eee8f00cb2019183_06E+0x249)[0x7fae9e7cc219]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x1eaa26)[0x7fae9e7e4a26]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4expr10trans_into16_7ae31c4cdcb7bf53_06E+0x69e)[0x7fae9e75afee]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base10trans_stmt16_72d83e6f13c2d973_06E+0x3d2)[0x7fae9e75a3f2]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans11controlflow11trans_block15_1f115d54efa2fe3_06E+0x17d)[0x7fae9e75895d]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base13trans_closure16_d015ca2d85785843_06E+0x568)[0x7fae9e83c018]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base8trans_fn17_83f45d8ff2c06e823_06E+0x441)[0x7fae9e7151c1]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base10trans_item16_512ccd6bccce7a33_06E+0xd28)[0x7fae9e70bae8]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base9trans_mod17_597f5c6c2c7fa77f3_06E+0x8f)[0x7fae9e84208f]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6middle5trans4base11trans_crate16_70f4efaa4968de53_06E+0x1182)[0x7fae9e85eac2]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bd9ac)[0x7fae9edb79ac]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6driver6driver12compile_upto17_4eb9d92e36712a653_06E+0x2664)[0x7fae9ed7db24]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bd9ac)[0x7fae9edb79ac]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN6driver6driver13compile_input16_3e3367fb7931f913_06E+0xbd)[0x7fae9ed802ad]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN12run_compiler16_40a563e0db358373_06E+0x2592)[0x7fae9edb0732]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bd9ac)[0x7fae9edb79ac]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bc6c3)[0x7fae9edb66c3]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bb72c)[0x7fae9edb572c]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x87e6d)[0x7fae9fbdfe6d]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xc3580)[0x7fae9fc1b580]
/home/rntz/p/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x24)[0x7fae9e3b83f4]
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/rntz/s/rust/src/librustc/rustc.rc:427
/home/rntz/p/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fae9e3b7b8b]
/home/rntz/p/bin/../lib/librustrt.so(+0x2e359)[0x7fae9e3cb359]
/home/rntz/p/bin/../lib/librustrt.so(upcall_fail+0x1b0)[0x7fae9e3ba340]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xaf0cb)[0x7fae9fc070cb]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x3f4be)[0x7fae9fb974be]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xc3580)[0x7fae9fc1b580]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN7monitor16_1cfefc35869d0533_06E+0x29be)[0x7fae9edb46fe]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(+0x7bd9ac)[0x7fae9edb79ac]
/home/rntz/p/bin/../lib/librustc-c84825241471686d-0.6.so(_ZN4main16_2fb85b4a659c4103_06E+0x86)[0x7fae9edb75b6]
/home/rntz/p/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x24)[0x7fae9e3b83f4]
rust: domain main @0x690610 root task failed
rust: task failed at 'killed', /home/rntz/s/rust/src/libcore/task/mod.rs:577
/home/rntz/p/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x7fae9e3b7b8b]
/home/rntz/p/bin/../lib/librustrt.so(+0x2e359)[0x7fae9e3cb359]
/home/rntz/p/bin/../lib/librustrt.so(upcall_fail+0x1b0)[0x7fae9e3ba340]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xaf0cb)[0x7fae9fc070cb]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x3f4be)[0x7fae9fb974be]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN4task5yield17_56812fae66173efd3_06E+0xbd)[0x7fae9fbc8b1d]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x9d8f6)[0x7fae9fbf58f6]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xc3580)[0x7fae9fc1b580]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(_ZN7private11weaken_task17_7a7c4fd2a577a8a53_06E+0xd9)[0x7fae9fbf5739]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x9d62b)[0x7fae9fbf562b]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x98203)[0x7fae9fbf0203]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0x87e6d)[0x7fae9fbdfe6d]
/home/rntz/p/bin/../lib/libcore-c3ca5d77d81b46c1-0.6.so(+0xc3580)[0x7fae9fc1b580]
/home/rntz/p/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x24)[0x7fae9e3b83f4]

[catamorphism]

Struct ctors appear to be totally unimplemented cross-crate. I'll take this on, shouldn't be hard.

[pnkfelix]

reproduced in c202430.

[pnkfelix]

Not critical for 0.6; de-milestoning

[catamorphism]

Different ICE, but still ICEs, with 0252c30 . Nominating for milestone 5, production-ready

[graydon]

accepted for production-ready milestone

[alexcrichton]

This code now compiles just fine. Flagging as needstest.