ICE when taking reference of an array element across crate border

[rsaarelm]

Script to reproduce:

#!/bin/sh

cat > array.rs <<EOF
pub static ARRAY: &'static [int] = &[1];
EOF

cat > main.rs <<EOF
extern crate array;
use array::ARRAY;
static X: &'static int = &ARRAY[0];
pub fn main() {}
EOF

rustc --version
rustc array.rs --crate-type rlib
RUST_BACKTRACE=1 rustc main.rs -L .

Version:

rustc 0.10-pre (092afdb 2014-03-22 00:56:47 -0700)
host: x86_64-unknown-linux-gnu

Output:

task 'rustc' failed at 'expected item, found unknown node (id=3)', /home/rsaarelm/local/rust/src/libsyntax/ast_map.rs:256
stack backtrace:
   1:     0x7fa9ece4c150 - rt::backtrace::imp::write::h65d4519594096df0zFb::v0.10.pre
   2:     0x7fa9ecdb1b20 - rt::unwind::begin_unwind_inner::h76e51d0b3f21ae573fb::v0.10.pre
   3:     0x7fa9ecdb17a0 - rt::unwind::begin_unwind_fmt::hcb4030a35e75e94bdfb::v0.10.pre
   4:     0x7fa9ebeecab0 - ast_map::Map::expect_item::h926341365065e5c2yWs::v0.10.pre
   5:     0x7fa9ed897ff0 - middle::trans::consts::get_const_val::hf35e5dbbcbb0c325gTi::v0.10.pre
   6:     0x7fa9ed898c80 - middle::trans::consts::const_expr_unadjusted::h8aa95ecf95053fc9wbj::v0.10.pre
   7:     0x7fa9ed8967f0 - middle::trans::consts::const_expr::h30ccf7f1ea2db6bb3Ui::v0.10.pre
   8:     0x7fa9ed898c80 - middle::trans::consts::const_expr_unadjusted::h8aa95ecf95053fc9wbj::v0.10.pre
   9:     0x7fa9ed8967f0 - middle::trans::consts::const_expr::h30ccf7f1ea2db6bb3Ui::v0.10.pre
  10:     0x7fa9ed898c80 - middle::trans::consts::const_expr_unadjusted::h8aa95ecf95053fc9wbj::v0.10.pre
  11:     0x7fa9ed8967f0 - middle::trans::consts::const_expr::h30ccf7f1ea2db6bb3Ui::v0.10.pre
  12:     0x7fa9ed7f2730 - middle::trans::base::get_item_val::h6d0d4cb5e1eec3caH9o::v0.10.pre
  13:     0x7fa9ed898660 - middle::trans::consts::trans_const::ha5c66b533e4b5e01rJj::v0.10.pre
  14:     0x7fa9ed7f1510 - middle::trans::base::trans_item::haefb1368e3f72c06EPo::v0.10.pre
  15:     0x7fa9ed8cb160 - middle::trans::base::trans_mod::h443add462d5f45c2PUo::v0.10.pre
  16:     0x7fa9ed8d4dd0 - middle::trans::base::trans_crate::hb821fec7a7227b18Jvq::v0.10.pre
  17:     0x7fa9edf0fcf0 - driver::driver::phase_4_translate_to_llvm::hd60d08bb19ab14c3ncf::v0.10.pre
  18:     0x7fa9edf11ec0 - driver::driver::compile_input::hea07fdb06f747ebclsf::v0.10.pre
  19:     0x7fa9edf359a0 - run_compiler::hb633d4f48873b5b685m::v0.10.pre
  20:     0x7fa9edf48c40 - main_args::closure.90956
  21:     0x7fa9edf47570 - monitor::closure.90841
  22:     0x7fa9edf42f40 - task::TaskBuilder::try::closure.90652
  23:     0x7fa9efc982c0 - task::spawn_opts::closure.7490
  24:     0x7fa9ece47870 - rt::task::Task::run::closure.40702
  25:     0x7fa9ece52c30 - rust_try
  26:     0x7fa9ece476b0 - rt::task::Task::run::hbf611f12dab23ee8848::v0.10.pre
  27:     0x7fa9efc98060 - task::spawn_opts::closure.7463
  28:     0x7fa9ece4ac10 - rt::thread::thread_start::h1eaa8730822d5e53AL9::v0.10.pre
  29:     0x7fa9ea1f8fe0 - start_thread
  30:     0x7fa9eca7cce9 - clone
  31:                0x0 - <unknown>

[emberian]

cc @alexcrichton

[Twisol]

This particular example no longer causes an ICE.

$ rustc main.rs -L .
main.rs:3:27: 3:35 error: cannot refer to the interior of another static, use a constant instead
main.rs:3 static X: &'static int = &ARRAY[0];
                                    ^~~~~~~~
error: aborting due to previous error
$ rustc --verbose --version
rustc 0.13.0-nightly (c6c786671 2015-01-04 00:50:59 +0000)
binary: rustc
commit-hash: c6c786671d692d7b13c2e5c68a53001327b4b125
commit-date: 2015-01-04 00:50:59 +0000
host: x86_64-apple-darwin
release: 0.13.0-nightly

[steveklabnik]

Can confirm, no more ICE.