ICE: unexpected char in type string: 3

[mark3982]

rustc 0.13.0-dev (dbc379a66 2014-12-03 18:52:48 +0000)
binary: rustc
commit-hash: dbc379a66eae8504b663b0032da518595335d872
commit-date: 2014-12-03 18:52:48 +0000
host: x86_64-unknown-linux-gnu
release: 0.13.0-dev

task 'rustc' panicked at 'unexpected char in type string: 3', /home/kmcguire/rustc/rust/src/librustc/metadata/tydecode.rs:494

stack backtrace:
   1:     0x7f5ffc6dec10 - rt::backtrace::imp::write::h4f8cab243d4bf3459ay
   2:     0x7f5ffc6e1ce0 - failure::on_fail::h8184c23095ded83fzDy
   3:     0x7f5ffc3334d0 - unwind::begin_unwind_inner::h69b9c407aca85ac16Qc
   4:     0x7f5ffc333100 - unwind::begin_unwind_fmt::hb629626de585edd9hOc
   5:     0x7f5ffb6e4f10 - metadata::tydecode::parse_ty::h95fd9d38a2b0ccd6twS
   6:     0x7f5ffb6ebfb0 - metadata::tydecode::parse_sig::hcd6db918f66f67d12mT
   7:     0x7f5ffb6e8b30 - metadata::tydecode::parse_bare_fn_ty::h10dffe58312f08db5lT
   8:     0x7f5ffb6e4f10 - metadata::tydecode::parse_ty::h95fd9d38a2b0ccd6twS
   9:     0x7f5ffb0256e0 - metadata::tydecode::parse_ty_data::hd248ff5bd17d9672CwR
  10:     0x7f5ffb1335c0 - middle::ty::lookup_item_type::h6c7f8b77da935e2dOh8
  11:     0x7f5ffb376160 - middle::typeck::check::polytype_for_def::hfdc8046ec823bc19DDr
  12:     0x7f5ffb36a5b0 - middle::typeck::check::check_expr_with_unifier::hf5814c4307d27fb9B5o
  13:     0x7f5ffb36a5b0 - middle::typeck::check::check_expr_with_unifier::hf5814c4307d27fb9B5o
  14:     0x7f5ffb3a3250 - middle::typeck::check::check_stmt::h9a0233bfe3fc01c3Z0q
  15:     0x7f5ffb321c20 - middle::typeck::check::check_block_with_expected::h52c0605dfe4e0370e5q
  16:     0x7f5ffb2f8000 - middle::typeck::check::check_fn::hf02151ade10aa90c1vl
  17:     0x7f5ffb31e5c0 - middle::typeck::check::check_bare_fn::ha6113d5dcdf600485kl
  18:     0x7f5ffb31a430 - middle::typeck::check::check_item::h885926f2b381f4degFl
  19:     0x7f5ffb31e250 - middle::typeck::check::check_item_types::h8aab310eb0ecde88fkl
  20:     0x7f5ffb6db7a0 - util::common::time::h5320206731541846924
  21:     0x7f5ffb6da9b0 - middle::typeck::check_crate::h39fe2ded900846b3w4O
  22:     0x7f5ffccfb440 - driver::driver::phase_3_run_analysis_passes::h323af9bb0040eedb5nS
  23:     0x7f5ffccf04b0 - driver::driver::compile_input::h94e361e56feb434c54R
  24:     0x7f5ffcd73bf0 - driver::run_compiler::h189ea58c9860c9e0l3T
  25:     0x7f5ffcd73ae0 - driver::run::closure.60788
  26:     0x7f5ffcb7a3c0 - task::TaskBuilder::try_future::closure.39745
  27:     0x7f5ffc6af870 - task::TaskBuilder::spawn_internal::closure.30919
  28:     0x7f5ffc3312a0 - task::Task::spawn::closure.5759
  29:     0x7f5ffc38d1e0 - rust_try_inner
  30:     0x7f5ffc38d1d0 - rust_try
  31:     0x7f5ffc331380 - unwind::try::h9c591d3345e5b658pFc
  32:     0x7f5ffc331140 - task::Task::run::h3e347c002326a21afOb
  33:     0x7f5ffc330d30 - task::Task::spawn::closure.5735
  34:     0x7f5ffc332780 - thread::thread_start::hec2f3b1aa0b9b9f3i6b
  35:     0x7f5ff71e3a80 - start_thread
  36:                0x0 - <unknown>

[huonw]

Do you happen to have a code example that triggers this bug?

[lifthrasiir]

In IRC @kmcguire3413 has provided a problematic repo: mark3982/kernel-rs@cbe4a49. I cannot reproduce the issue though (rustc 0.13.0-nightly (a31ad6bfc 2014-12-06 23:12:17 +0000)).

[tamird]

Needs a repro case

[steveklabnik]

We haven't had a way to reproduce this in a long time. @kmcguire3413 , please let us know if this is still an issue, and send us some code, thank you!