ICE: can't find associated type

[GuillaumeGomez]

Hey, here is my code (which is not supposed to work by the way) :

pub trait GValuePrivate {
    type Ret;

    fn get_gvalue(&self) -> *const <Self as GValuePrivate>::Ret {
        self
    }
}

impl GValuePrivate for i32 {}

Here's the backtrace :

src/gtk/traits/value.rs:42:6: 42:19 error: internal compiler error: ImplCtxt::associated_type_binding(): didn't find associated type
src/gtk/traits/value.rs:42 impl GValuePrivate for i32 {}
                                ^~~~~~~~~~~~~
note: the compiler hit an unexpected failure path. 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
task 'rustc' failed at 'Box<Any>', /home/rustbuild/src/rust-buildbot/slave/nightly-linux/build/src/libsyntax/diagnostic.rs:116

stack backtrace:
   1:     0x7f974df0c860 - rt::backtrace::imp::write::he1d07ecb5c09ef73Ocq
   2:     0x7f974df0f990 - failure::on_fail::h76802abdf02d9229byq
   3:     0x7f9752481ac0 - unwind::begin_unwind_inner::hb92ca1198fd23157Yxd
   4:     0x7f974f2d3ec0 - unwind::begin_unwind::h9730348371336326902
   5:     0x7f974f2d3e40 - diagnostic::SpanHandler::span_bug::h9d432d9518c523bfCMF
   6:     0x7f97531f9010 - middle::typeck::collect::ImplCtxt<'a, 'tcx>.AstConv<'tcx>::associated_type_binding::h242c9ff65dee50cacpi
   7:     0x7f97532161b0 - middle::typeck::astconv::ast_path_substs::h3982509238564075644
   8:     0x7f9753215f50 - middle::typeck::astconv::ast_path_to_trait_ref::h1834174999553688290
   9:     0x7f9753151020 - middle::typeck::collect::convert::h2c246fdf38b25c3cGIi
  10:     0x7f97531553b0 - visit::walk_item::h14094525741500740573
  11:     0x7f97531553b0 - visit::walk_item::h14094525741500740573
  12:     0x7f97531553b0 - visit::walk_item::h14094525741500740573
  13:     0x7f9753149dc0 - middle::typeck::collect::collect_item_types::hbcddf06b64541eabEJh
  14:     0x7f9752ae4c90 - util::common::time::h13858161161014839769
  15:     0x7f9753328cf0 - middle::typeck::check_crate::h81dc5bd97e39d0a5own
  16:     0x7f97533951b0 - driver::driver::phase_3_run_analysis_passes::h04ee49849c18416b69z
  17:     0x7f9753390630 - driver::driver::compile_input::hd4ba06b74713782dRQz
  18:     0x7f975341b350 - driver::run_compiler::h014078c5025dc703vDD
  19:     0x7f975341b200 - driver::run::closure.145641
  20:     0x7f9752afeb20 - task::TaskBuilder<S>::try_future::closure.103153
  21:     0x7f9752afe900 - task::TaskBuilder<S>::spawn_internal::closure.103124
  22:     0x7f97527cb740 - task::NativeSpawner.Spawner::spawn::closure.8435
  23:     0x7f97524dad10 - rust_try_inner
  24:     0x7f97524dad00 - rust_try
  25:     0x7f975247f380 - unwind::try::hdee5a3b0466d278eGmd
  26:     0x7f975247f200 - task::Task::run::h27d9c4b6d2601e28kCc
  27:     0x7f97527cb480 - task::NativeSpawner.Spawner::spawn::closure.8375
  28:     0x7f9752480ad0 - thread::thread_start::h5e6e53ee3afb8775vWc
  29:     0x7f974d2b60c0 - start_thread
  30:     0x7f9752149f89 - __clone
  31:                0x0 - <unknown>

Could not compile `rgtk`.

And my version rust version :

rustc 0.13.0-nightly (6ef8392b3 2014-10-20 22:17:49 +0000)

Good luck !

[quantheory]

I had a similar issue; I believe that this is a dup of #17359.

[nikomatsakis]

No longer reproduces, I get legitimate compilation errors now as expected.