ICE: Example in the Intro

[thehydroimpulse]

One of the examples in the 30-minute introduction ICEs the compiler.

Example:

extern crate sync;
use sync::Arc;

fn main() {
    let numbers = ~[1,2,3];
    let numbers = Arc::new(numbers);

    for num in range(0, 3) {
        let (tx, rx)  = channel();
        tx.send(numbers.clone());

        spawn(proc() {
            let numbers = rx.recv();
            println!("{:d}", numbers[num as uint]);
        })
    }
}

Error:

error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'No triple in crate', /Users/rustbuild/src/rust-buildbot/slave/nightly-mac/build/src/libstd/option.rs:167

With backtracing:

error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug.
note: we would appreciate a bug report: http://static.rust-lang.org/doc/master/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
task 'rustc' failed at 'No triple in crate', /Users/rustbuild/src/rust-buildbot/slave/nightly-mac/build/src/libstd/option.rs:167
stack backtrace:
   1:        0x109f728e5 - rt::backtrace::imp::write::hbcaf678b0345cccaceG::v0.11.0.pre
   2:        0x109edd5cd - rt::unwind::begin_unwind_inner::h14156791aa49f4a6gOF::v0.11.0.pre
   3:        0x1070ded2d - rt::unwind::begin_unwind::h13817063666586038149::v0.11.0.pre
   4:        0x10787a00b - metadata::decoder::get_crate_triple::hfcfe3ec1b9abc16cKje::v0.11.0.pre
   5:        0x107896a4b - metadata::loader::Context<'a>::extract_one::hf5d19176f51236649Lg::v0.11.0.pre
   6:        0x10788e811 - metadata::loader::Context<'a>::find_library_crate::ha9b42fb937e4a7e8ffg::v0.11.0.pre
   7:        0x107889fef - metadata::loader::Context<'a>::load_library_crate::hec3e3d4de6523f8eD1f::v0.11.0.pre
   8:        0x107886170 - metadata::creader::resolve_crate::hc3859c99e8758a63VZe::v0.11.0.pre
   9:        0x10787da97 - metadata::creader::Env<'a>.visit..Visitor<(*>::visit_view_item::h37242e92fe44bdb8oye::v0.11.0.pre
  10:        0x10787cd9d - metadata::creader::read_crates::h3ab0d15b2426d55avxe::v0.11.0.pre
  11:        0x1074e7c36 - util::common::time::h14577185196876260643::v0.11.0.pre
  12:        0x1078a626e - driver::driver::phase_3_run_analysis_passes::hb59d0b3ba6e1d3bb8gi::v0.11.0.pre
  13:        0x1078a12ce - driver::driver::compile_input::hdf53daa1ef2f9400I6h::v0.11.0.pre
  14:        0x107941002 - driver::run_compiler::h0bd18c30b3e645ccKyk::v0.11.0.pre
  15:        0x10793f34d - driver::main_args::closure.92571
  16:        0x1079567f7 - driver::monitor::closure.93746
  17:        0x107950ffb - task::TaskBuilder::try::closure.93513
  18:        0x10954dfcc - task::spawn_opts::closure.7487
  19:        0x109f695f8 - rt::task::Task::run::closure.28524
  20:        0x109f8b1cc - rust_try
  21:        0x109f69477 - rt::task::Task::run::h709df42827b3a28enDD::v0.11.0.pre
  22:        0x10954de2f - task::spawn_opts::closure.7459
  23:        0x109f71116 - rt::t

Rustc:

rustc 0.11.0-pre-nightly (e162438 2014-05-12 23:11:45 -0700)
host: x86_64-apple-darwin

[sfackler]

It seems to compile and run just fine on a slightly newer nightly:

rustc 0.11.0-pre-nightly (579e0a5 2014-05-15 01:02:11 -0700)
host: x86_64-apple-darwin

[thehydroimpulse]

@sfackler Weird. Just upgraded to the newest nightly and it still results in an ICE.

rustc 0.11.0-pre-nightly (579e0a5 2014-05-15 01:02:11 -0700)
host: x86_64-apple-darwin

[sfackler]

Where do you have the nightly installed? There have historically been some bad interactions involving symlinked .so's.

[thehydroimpulse]

I have mine installed at the default location /usr/local. I used the mac installer to achieve it. I'll see if I can clean up some older rust files laying around (I have some 0.10 still around)

[thehydroimpulse]

This has been fixed. Uninstalled Rust and removed any leftover files before reinstalling it. Thanks.