ICE: Broken MIR with feature generic_const_exprs

[znx3p0]

Code

To reproduce this error, please clone this repo and build it.

Meta

rustc --version --verbose:

rustc 1.59.0-nightly (5531927e8 2021-12-16)
binary: rustc
commit-hash: 5531927e8af9b99ad923af4c827c91038bca51ee
commit-date: 2021-12-16
host: x86_64-unknown-linux-gnu
release: 1.59.0-nightly
LLVM version: 13.0.0

Error output

error: internal compiler error: compiler/rustc_mir_transform/src/generator.rs:753:13: Broken MIR: generator contains type [u8; 8] in MIR, but typeck only knows about {ResumeTy, &mut Snow<T>, O, Vec<u8>, usize, Snow<T>, &mut T, T, &Vec<u8>, u64, [u8; _], &[u8], &[u8; _], async_std::io::write::write::WriteFuture<T>, (), async_std::io::write::flush::FlushFuture<T>} and [&mut async_snow::Snow<T>, O]
   --> igcp/src/async_snow.rs:141:71
    |
141 |       pub async fn tx<O: Serialize>(&mut self, obj: O) -> Result<usize> {
    |  _______________________________________________________________________^
142 | |         // serialize or return invalid data error
143 | |         let vec = bincode::serialize(&obj).or_else(|e| err!((invalid_data, e)))?;
144 | |         // get length from serialized object
...   |
158 | |         Ok(res)
159 | |     }
    | |_____^

Backtrace

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/5531927e8af9b99ad923af4c827c91038bca51ee/compiler/rustc_errors/src/lib.rs:1115:9
stack backtrace:
   0: std::panicking::begin_panic::<rustc_errors::ExplicitBug>
   1: std::panic::panic_any::<rustc_errors::ExplicitBug>
   2: <rustc_errors::HandlerInner>::span_bug::<rustc_span::span_encoding::Span>
   3: <rustc_errors::Handler>::span_bug::<rustc_span::span_encoding::Span>
   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::span_bug_fmt::<rustc_span::span_encoding::Span>
   7: <rustc_mir_transform::generator::StateTransform as rustc_middle::mir::MirPass>::run_pass
   8: rustc_mir_transform::pass_manager::run_passes
   9: rustc_mir_transform::optimized_mir
  10: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_span::def_id::DefId, &rustc_middle::mir::Body>
  11: rustc_data_structures::stack::ensure_sufficient_stack::<(&rustc_middle::mir::Body, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::plumbing::QueryCtxt, rustc_span::def_id::DefId, &rustc_middle::mir::Body>::{closure#3}>
  12: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, &rustc_middle::mir::Body>>
  13: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::optimized_mir
  14: <rustc_middle::ty::context::TyCtxt>::generator_layout
  15: <rustc_middle::ty::layout::LayoutCx<rustc_middle::ty::context::TyCtxt>>::layout_of_uncached
  16: rustc_middle::ty::layout::layout_of
  17: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_middle::ty::ParamEnvAnd<&rustc_middle::ty::TyS>, core::result::Result<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>, rustc_middle::ty::layout::LayoutError>>
  18: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::layout_of, rustc_query_impl::plumbing::QueryCtxt>
  19: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::layout_of
  20: <alloc::vec::Vec<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>> as alloc::vec::spec_from_iter::SpecFromIter<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>, core::iter::adapters::ResultShunt<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::ty::FieldDef>, <rustc_middle::ty::layout::LayoutCx<rustc_middle::ty::context::TyCtxt>>::layout_of_uncached::{closure#5}::{closure#0}>, rustc_middle::ty::layout::LayoutError>>>::from_iter
  21: <alloc::vec::Vec<alloc::vec::Vec<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>>> as alloc::vec::spec_from_iter::SpecFromIter<alloc::vec::Vec<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>>, core::iter::adapters::ResultShunt<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::ty::VariantDef>, <rustc_middle::ty::layout::LayoutCx<rustc_middle::ty::context::TyCtxt>>::layout_of_uncached::{closure#5}>, rustc_middle::ty::layout::LayoutError>>>::from_iter
  22: <rustc_middle::ty::layout::LayoutCx<rustc_middle::ty::context::TyCtxt>>::layout_of_uncached
  23: rustc_middle::ty::layout::layout_of
  24: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_middle::ty::ParamEnvAnd<&rustc_middle::ty::TyS>, core::result::Result<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>, rustc_middle::ty::layout::LayoutError>>
  25: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::layout_of, rustc_query_impl::plumbing::QueryCtxt>
  26: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::layout_of
  27: rustc_middle::ty::layout::layout_of
  28: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_middle::ty::ParamEnvAnd<&rustc_middle::ty::TyS>, core::result::Result<rustc_target::abi::TyAndLayout<&rustc_middle::ty::TyS>, rustc_middle::ty::layout::LayoutError>>
  29: rustc_query_system::query::plumbing::get_query::<rustc_query_impl::queries::layout_of, rustc_query_impl::plumbing::QueryCtxt>
  30: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::layout_of
  31: <rustc_mir_transform::const_prop::ConstProp as rustc_middle::mir::MirPass>::run_pass
  32: rustc_mir_transform::pass_manager::run_passes
  33: rustc_mir_transform::optimized_mir
  34: <rustc_query_system::dep_graph::graph::DepGraph<rustc_middle::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle::ty::context::TyCtxt, rustc_span::def_id::DefId, &rustc_middle::mir::Body>
  35: rustc_data_structures::stack::ensure_sufficient_stack::<(&rustc_middle::mir::Body, rustc_query_system::dep_graph::graph::DepNodeIndex), rustc_query_system::query::plumbing::execute_job<rustc_query_impl::plumbing::QueryCtxt, rustc_span::def_id::DefId, &rustc_middle::mir::Body>::{closure#3}>
  36: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::plumbing::QueryCtxt, rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, &rustc_middle::mir::Body>>
  37: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::optimized_mir
  38: <rustc_metadata::rmeta::encoder::EncodeContext>::encode_crate_root
  39: rustc_metadata::rmeta::encoder::encode_metadata_impl
  40: rustc_data_structures::sync::join::<rustc_metadata::rmeta::encoder::encode_metadata::{closure#0}, rustc_metadata::rmeta::encoder::encode_metadata::{closure#1}, rustc_metadata::rmeta::encoder::EncodedMetadata, ()>
  41: rustc_metadata::rmeta::encoder::encode_metadata
  42: <rustc_interface::queries::Queries>::ongoing_codegen
  43: <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>>
  44: 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}>
  45: <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 1.59.0-nightly (5531927e8 2021-12-16) 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 [optimized_mir] optimizing MIR for `async_snow::<impl at igcp/src/async_snow.rs:17:1: 160:2>::tx::{closure#0}`
#1 [layout_of] computing layout of `[static generator@igcp/src/async_snow.rs:141:71: 159:6]`
#2 [layout_of] computing layout of `core::future::from_generator::GenFuture<[static generator@igcp/src/async_snow.rs:141:71: 159:6]>`
#3 [layout_of] computing layout of `impl core::future::future::Future<Output = [async output]>`
#4 [optimized_mir] optimizing MIR for `async_snow::<impl at igcp/src/async_snow.rs:17:1: 160:2>::tx`
end of query stack