ICE unwrap of none value in librustc_hir/definitions.rs

While trying to minify the ICE from #73537 I stumpled upon a different ICE.

<details>
<summary>Backtrace</summary>

```
error[E0706]: functions in traits cannot be declared `async`
  --> amadeus-core/src/par_stream.rs:62:5
   |
62 |       async fn reduce<P, B, R1F, R1, R3>(
   |       ^----
   |       |
   |  _____`async` because of this
   | |
63 | |         self,
64 | |     ) {
65 | |         let handles = vec![]
66 | |             .into_iter()
67 | |             .map(|tasks| {});
68 | |     }
   | |_____^
   |
   = note: `async` trait functions are not currently supported
   = note: consider using the `async-trait` crate: https://crates.io/crates/async-trait

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/librustc_hir/definitions.rs:316:35
stack backtrace:
   0:     0x7f32261edf05 - backtrace::backtrace::libunwind::trace::h34afbfad7fd770fc
                               at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1:     0x7f32261edf05 - backtrace::backtrace::trace_unsynchronized::h460d522b1619a600
                               at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
   2:     0x7f32261edf05 - std::sys_common::backtrace::_print_fmt::ha45fac10086813b4
                               at src/libstd/sys_common/backtrace.rs:78
   3:     0x7f32261edf05 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde84f63fcfd0e6de
                               at src/libstd/sys_common/backtrace.rs:59
   4:     0x7f322622b49c - core::fmt::write::h540ac4a6a1232abc
                               at src/libcore/fmt/mod.rs:1076
   5:     0x7f32261dfd72 - std::io::Write::write_fmt::hc344eafd6e850b4d
                               at src/libstd/io/mod.rs:1537
   6:     0x7f32261f2e30 - std::sys_common::backtrace::_print::h4db88ff15cb5d61d
                               at src/libstd/sys_common/backtrace.rs:62
   7:     0x7f32261f2e30 - std::sys_common::backtrace::print::h5fc39e1b1f610bd3
                               at src/libstd/sys_common/backtrace.rs:49
   8:     0x7f32261f2e30 - std::panicking::default_hook::{{closure}}::h59e55edacb1d974a
                               at src/libstd/panicking.rs:198
   9:     0x7f32261f2b7c - std::panicking::default_hook::heee4c8016dfbf328
                               at src/libstd/panicking.rs:217
  10:     0x7f322695ea73 - rustc_driver::report_ice::h26eb523a40d729cf
  11:     0x7f321bbf7216 - <alloc::boxed::Box<F> as core::ops::function::Fn<A>>::call::h082305267bbe2157
                               at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1095
  12:     0x7f321bc05fb5 - proc_macro::bridge::client::<impl proc_macro::bridge::Bridge>::enter::{{closure}}::{{closure}}::h93042890da1620b3
                               at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/libproc_macro/bridge/client.rs:318
  13:     0x7f32261f35a8 - std::panicking::rust_panic_with_hook::h8405b6301c79fb5a
                               at src/libstd/panicking.rs:524
  14:     0x7f32261f317b - rust_begin_unwind
                               at src/libstd/panicking.rs:431
  15:     0x7f3226228041 - core::panicking::panic_fmt::h78830ea6a34e7206
                               at src/libcore/panicking.rs:85
  16:     0x7f3226227f8d - core::panicking::panic::h68e56c2eeba99c8c
                               at src/libcore/panicking.rs:50
  17:     0x7f3228ee2e18 - rustc_middle::hir::map::Map::def_kind::hafb262fbf0d38c75
  18:     0x7f3228ed701a - core::ops::function::FnOnce::call_once::hf8c5a3a31d68c4c7
  19:     0x7f32293d0bb1 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::hddf6668a514f1551
  20:     0x7f3228e598dd - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hc013b7ff2582024e
  21:     0x7f3229154952 - rustc_data_structures::stack::ensure_sufficient_stack::h52380575085609a2
  22:     0x7f3228f872aa - rustc_query_system::query::plumbing::get_query_impl::hb3a05b7f5b583756
  23:     0x7f32291c0a80 - rustc_middle::ty::util::<impl rustc_middle::ty::context::TyCtxt>::closure_base_def_id::h17764ecfb292c8f3
  24:     0x7f3227596f30 - rustc_typeck::collect::generics_of::h2d71d824fa4bf7bc
  25:     0x7f3227569c2b - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::generics_of>::compute::h69cce6614aed3c59
  26:     0x7f32273fb043 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h5f4e1d0635b188f7
  27:     0x7f3227511126 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::h606eb85f7cd1a802
  28:     0x7f3227544ec9 - rustc_data_structures::stack::ensure_sufficient_stack::h55c904426c20f7fc
  29:     0x7f322745f7d8 - rustc_query_system::query::plumbing::get_query_impl::h57da19642e9c745d
  30:     0x7f32274a4f64 - rustc_query_system::query::plumbing::ensure_query_impl::h94dcd0801933967a
  31:     0x7f32274e9d7f - rustc_hir::intravisit::walk_expr::hf083e7c97404000d
  32:     0x7f3227592bd9 - <rustc_typeck::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_expr::h4760b49ab9b8385b
  33:     0x7f32275845ce - rustc_hir::intravisit::Visitor::visit_stmt::hd7d75fd2d63dd139
  34:     0x7f32274ea23f - rustc_hir::intravisit::walk_expr::hf083e7c97404000d
  35:     0x7f32274e5f8e - rustc_hir::intravisit::walk_body::h56da48f921ac51fb
  36:     0x7f32274d89ae - rustc_hir::intravisit::walk_trait_item::h6dbdc62e387e3321
  37:     0x7f3227592f0d - <rustc_typeck::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_trait_item::h585101dc821ed179
  38:     0x7f32274fe2b8 - rustc_middle::hir::map::Map::visit_item_likes_in_module::h2fc5c339188d4a79
  39:     0x7f32275907c4 - rustc_typeck::collect::collect_mod_item_types::h14a5b9d007c58603
  40:     0x7f322760a835 - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::collect_mod_item_types>::compute::h55f7d1c38c919e5c
  41:     0x7f32273fbad1 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h71d6d4a6cdfbae36
  42:     0x7f3227513f94 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::haf98227a6d0ddc0c
  43:     0x7f32275467a3 - rustc_data_structures::stack::ensure_sufficient_stack::h84406c3b568f39a8
  44:     0x7f32274a16e3 - rustc_query_system::query::plumbing::get_query_impl::hfa21f15e8339624f
  45:     0x7f32274a4aee - rustc_query_system::query::plumbing::ensure_query_impl::h8af3ba1f8784298a
  46:     0x7f322760cd03 - rustc_session::session::Session::track_errors::h33a1cb2fba4e84c5
  47:     0x7f32275a408b - rustc_typeck::check_crate::hd09a544480ba7537
  48:     0x7f3226b001af - rustc_interface::passes::analysis::h3a6008da1c156296
  49:     0x7f322694666b - rustc_middle::ty::query::<impl rustc_query_system::query::config::QueryAccessors<rustc_middle::ty::context::TyCtxt> for rustc_middle::ty::query::queries::analysis>::compute::hae71a7f9d73047a0
  50:     0x7f3226947df8 - rustc_middle::dep_graph::<impl rustc_query_system::dep_graph::DepKind for rustc_middle::dep_graph::dep_node::DepKind>::with_deps::h6c2ce8b92f30caac
  51:     0x7f32269bb644 - rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl::hfe3c0a8b0dcc9800
  52:     0x7f32269be959 - rustc_data_structures::stack::ensure_sufficient_stack::h80ac0f704de7cdf6
  53:     0x7f3226924644 - rustc_query_system::query::plumbing::get_query_impl::hebe8aa5a8aac99c3
  54:     0x7f3226946b0f - rustc_middle::ty::context::tls::enter_global::h614eb6f235bbc020
  55:     0x7f32269193fa - rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter::hb3ecfe94ca03e6c6
  56:     0x7f32269b9343 - rustc_span::with_source_map::h21eed361cfe861de
  57:     0x7f322691ab16 - rustc_interface::interface::run_compiler_in_existing_thread_pool::h902d0e3e1f552acf
  58:     0x7f32269441bd - scoped_tls::ScopedKey<T>::set::hbc88e7d76dd9a901
  59:     0x7f322696a81a - std::sys_common::backtrace::__rust_begin_short_backtrace::h0f0c30d1296961bc
  60:     0x7f32269275be - core::ops::function::FnOnce::call_once{{vtable.shim}}::h36b2cf3218c61088
  61:     0x7f3226202daa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h13d34828db364579
                               at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1081
  62:     0x7f3226202daa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd51b619e0f884abf
                               at /rustc/3503f565e1fb7296983757d2716346f48a4a262b/src/liballoc/boxed.rs:1081
  63:     0x7f3226202daa - std::sys::unix::thread::Thread::new::thread_start::h02c6e34c2c73f344
                               at src/libstd/sys/unix/thread.rs:87
  64:     0x7f322614b432 - start_thread
  65:     0x7f32260679d3 - __clone
  66:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.46.0-nightly (3503f565e 2020-07-02) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental --crate-type lib

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [def_kind] looking up definition kind of `par_stream::ParallelStream::reduce::{{closure}}#0`
#1 [generics_of] computing generics of `par_stream::ParallelStream::reduce::{{closure}}#0::{{closure}}#0`
#2 [collect_mod_item_types] collecting item types in module `par_stream`
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error
```

</details>

https://github.com/rust-lang/rust/blob/4a689da944977496fb758cc2d700984cc6a10b7f/src/librustc_hir/definitions.rs#L315-L317

This needs an MCVE

@rustbot modify labels: E-needs-mcve E-needs-bisection A-hir

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

ICE unwrap of none value in librustc_hir/definitions.rs #74318

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Participants

	pub fn local_def_id_to_hir_id(&self, id: LocalDefId) -> hir::HirId {
	self.def_id_to_hir_id[id].unwrap()
	}

ICE unwrap of none value in librustc_hir/definitions.rs #74318

Description

Activity

hellow554 commented on Jul 14, 2020

jyn514 commented on Jul 15, 2020

aDotInTheVoid commented on Dec 27, 2020

hellow554 commented on May 25, 2021

hellow554 commented on May 25, 2021

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Participants

Issue actions