ICE when compiling with debug info

[Marwes]

Got another ICE, this time it only shows itself when compiled with debug info (rustc -g error.rs). Also of note is that another ICE shows itself if the State wrapper is removed (I can file a separate report for that if you want but I figure they might be the same issue).

struct State<I>;

trait Parser {
    type Input;
}

impl Parser for ()  {
    type Input = ();
}

struct IntoIter<P: Parser> {
    input: State<<P as Parser>::Input>
}

fn main() {
    let p  = IntoIter::<()> { input: State::<()> };
}
//Compile with rustc error.rs -g

error: internal compiler error: get_unique_type_id_of_type() - unexpected type:
<() as Parser>::Input, ty_projection(ProjectionTy { trait_ref: Rc(TraitRef { def_id: DefId { krate: 0u32, node: 8u32 }, substs: Substs { types: VecPerParamSpace {TypeSpace: [], SelfSpace: [TyS { sty: ty_tup([]), flags: 0, region_depth: 0u32 }], FnSpace: [], }, regions: NonerasedRegions(VecPerParamSpace {TypeSpace: [],
SelfSpace: [], FnSpace: [], }) } }), item_name: "Input"(64) })
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: http://doc.rust-lang.org/complement-bugreport.html
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'Box<Any>', C:\bot\slave\nightly-dist-rustc-win-64\build\src\libsyntax\diagnostic.rs:182

stack backtrace:
   1:         0x69bec997 - sys::backtrace::write::h62d87c63e18a3ea5JRt
   2:         0x69c00672 - rt::unwind::register::haa3a38fa07bfa9beVGz
   3:         0x69b834a7 - rt::unwind::begin_unwind_inner::hbebf9f8c0125ffc9tEz
   4:         0x6f898116 - diagnostic::SpanHandler::span_bug::hebc2106d060dd9d6xSF
   5:         0x6f8989c5 - diagnostic::Handler::bug::hd75d92a08fdf3c17DYF
   6:           0x801852 - session::Session::bug::h9385caa3fe1c8dc3wQq
   7:          0x11467b7 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
   8:          0x114a57a - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
   9:          0x1147448 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  10:          0x114c721 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  11:          0x1154a87 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  12:          0x11545ca - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  13:          0x11504ef - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  14:          0x11531f4 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  15:          0x114d472 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  16:          0x114eaa2 - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  17:          0x114e2bf - trans::debuginfo::UniqueTypeId...std..fmt..Show::fmt::h6619b90c5d2210b6NBD
  18:          0x1033554 - trans::cleanup::FunctionContext<'blk, 'tcx>.CleanupMethods<'blk, 'tcx>::pop_and_trans_ast_cleanup_scope::h80e56e364b2716daMFK
  19:          0x10fd20a - trans::base::IsUnboxedClosureFlag...std..clone..Clone::clone::h7d2a86d65666b43aQYt
  20:          0x101e571 - trans::context::CrateContext<'b, 'tcx>::sess::h6fdd1e7dea5490cdItm
  21:          0x1019cc3 - trans::context::CrateContext<'b, 'tcx>::stats::hd7a1dc7a2465d605EGm
  22:          0x1103768 - trans::base::trans_crate::h4bc502f506e6c118Wsv
  23:         0x70b2af6a - driver::phase_4_translate_to_llvm::haa9c5e826483e242PFa
  24:         0x70b03623 - driver::compile_input::hf5b2f58693da03b5xba
  25:         0x70bd1eec - run::ha65e56249318cc0dV3b
  26:         0x70bd04cc - run::ha65e56249318cc0dV3b
  27:         0x70bcf16a - run::ha65e56249318cc0dV3b
  28:         0x69c2881c - rust_try
  29:         0x69c287f9 - rust_try
  30:         0x70bcf854 - run::ha65e56249318cc0dV3b
  31:         0x69bf14a7 - sys::tcp::TcpListener::bind::hc4a8da4adad0f541bsw
  32:     0x7fff4c8816ad - BaseThreadInitThunk

rustc 1.0.0-nightly (44a287e6e 2015-01-08 17:03:40 -0800)
binary: rustc
commit-hash: 44a287e6eb22ec3c2a687fc156813577464017f7
commit-date: 2015-01-08 17:03:40 -0800
host: x86_64-pc-windows-gnu
release: 1.0.0-nightly

[jdm]

This will be fixed by #20960.

[Marwes]

Still an issue but it seems to be a duplicate of #20797

[Marwes]

Fixed a long with #20797