ICE: compiler/rustc_typeck/src/collect/type_of.rs:186:25: no arg matching AnonConst in path

[Badel2]

I'm seeing an internal compiler error on the following input, found by fuzz-rustc:

Code

fn main() {
    0: u8<e<5>=e>
}

Error output

error[E0412]: cannot find type `e` in this scope
 --> src/main.rs:2:16
  |
2 |     0: u8<e<5>=e>
  |                ^
  |                |
  |                not found in this scope
  |                help: maybe you meant to write an assignment here: `let e`

error: internal compiler error: compiler/rustc_typeck/src/collect/type_of.rs:186:25: no arg matching AnonConst in path

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1169:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

The ICE happens after correctly reporting another error, so low priority. Affected versions: I tried nightly 2021-11-25 and stable 1.56.1 and they both show the same ICE.

Backtrace

   Compiling playground v0.0.1 (/playground)
error[E0412]: cannot find type `e` in this scope
 --> src/main.rs:2:16
  |
2 |     0: u8<e<5>=e>
  |                ^
  |                |
  |                not found in this scope
  |                help: maybe you meant to write an assignment here: `let e`

error: internal compiler error: compiler/rustc_typeck/src/collect/type_of.rs:186:25: no arg matching AnonConst in path

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1169:9
stack backtrace:
   0: std::panicking::begin_panic::<rustc_errors::ExplicitBug>
   1: std::panic::panic_any::<rustc_errors::ExplicitBug>
   2: <rustc_errors::HandlerInner>::bug
   3: <rustc_errors::Handler>::bug
   4: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, ()>
   5: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>
   6: rustc_middle::util::bug::bug_fmt
   7: rustc_typeck::collect::type_of::opt_const_param_of
   8: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::LocalDefId, core::option::Option<rustc_span::def_id::DefId>>>
   9: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::opt_const_param_of
  10: rustc_typeck::check::typeck
  11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::LocalDefId, &rustc_middle::ty::context::TypeckResults>>
  12: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck
  13: <rustc_middle::hir::map::Map>::par_body_owners::<rustc_typeck::check::typeck_item_bodies::{closure#0}>
  14: rustc_typeck::check::typeck_item_bodies
  15: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<(), ()>>
  16: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::typeck_item_bodies, rustc_query_impl::plumbing::QueryCtxt>
  17: <rustc_session::session::Session>::time::<(), rustc_typeck::check_crate::{closure#7}>
  18: rustc_typeck::check_crate
  19: rustc_interface::passes::analysis
  20: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<(), core::result::Result<(), rustc_errors::ErrorReported>>>
  21: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::analysis, rustc_query_impl::plumbing::QueryCtxt>
  22: <rustc_interface::passes::QueryContext>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}::{closure#3}, core::result::Result<(), rustc_errors::ErrorReported>>
  23: <rustc_interface::interface::Compiler>::enter::<rustc_driver::run_compiler::{closure#1}::{closure#2}, core::result::Result<core::option::Option<rustc_interface::queries::Linker>, rustc_errors::ErrorReported>>
  24: rustc_span::with_source_map::<core::result::Result<(), rustc_errors::ErrorReported>, rustc_interface::interface::create_compiler_and_run<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>::{closure#1}>
  25: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>
  26: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorReported>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorReported>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_errors::ErrorReported>>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.58.0-nightly (dd549dcab 2021-11-25) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2 --crate-type bin

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [opt_const_param_of] computing the optional const parameter of `main::{constant#0}`
#1 [typeck] type-checking `main::{constant#0}`
#2 [typeck_item_bodies] type-checking all item bodies
#3 [analysis] running analysis passes on this crate
end of query stack
For more information about this error, try `rustc --explain E0412`.
error: could not compile `playground` due to previous error

[terrarier2111]

I will give this a try
@rustbot claim