ICE: panicked at 'assertion failed: body.yield_ty().is_some() == universal_regions.yield_ty.is_some()', compiler/rustc_mir/src/borrow_check/type_check/input_output.rs:106:9

[chengniansun]

Code

fn yes_double_ended_iterator() -> impl {
    yield
}

Meta

rustc --version --verbose:

rustc 1.53.0-nightly (07e0e2ec2 2021-03-24)
binary: rustc
commit-hash: 07e0e2ec268c140e607e1ac7f49f145612d0f597
commit-date: 2021-03-24
host: x86_64-unknown-linux-gnu
release: 1.53.0-nightly
LLVM version: 12.0.0

Error output

error: at least one trait must be specified
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:35
  |
1 | fn yes_double_ended_iterator() -> impl {
  |                                   ^^^^

error[E0658]: yield syntax is experimental
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     yield
  |     ^^^^^
  |
  = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
  = help: add `#![feature(generators)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | / fn yes_double_ended_iterator() -> impl {
2 | |     yield
3 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error[E0627]: yield expression outside of generator literal
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     yield
  |     ^^^^^

thread 'rustc' panicked at 'assertion failed: body.yield_ty().is_some() == universal_regions.yield_ty.is_some()', compiler/rustc_mir/src/borrow_check/type_check/input_output.rs:106:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.53.0-nightly (07e0e2ec2 2021-03-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [mir_borrowck] borrow-checking `yes_double_ended_iterator`
#1 [type_of] computing type of `yes_double_ended_iterator::{opaque#0}`
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0601, E0627, E0658.
For more information about an error, try `rustc --explain E0601`.

Backtrace

error: at least one trait must be specified
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:35
  |
1 | fn yes_double_ended_iterator() -> impl {
  |                                   ^^^^

error[E0658]: yield syntax is experimental
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     yield
  |     ^^^^^
  |
  = note: see issue #43122 <https://github.com/rust-lang/rust/issues/43122> for more information
  = help: add `#![feature(generators)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | / fn yes_double_ended_iterator() -> impl {
2 | |     yield
3 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error[E0627]: yield expression outside of generator literal
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     yield
  |     ^^^^^

thread 'rustc' panicked at 'assertion failed: body.yield_ty().is_some() == universal_regions.yield_ty.is_some()', compiler/rustc_mir/src/borrow_check/type_check/input_output.rs:106:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597/library/std/src/panicking.rs:493:5
   1: core::panicking::panic_fmt
             at /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597/library/core/src/panicking.rs:92:14
   2: core::panicking::panic
             at /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597/library/core/src/panicking.rs:50:5
   3: rustc_mir::borrow_check::type_check::type_check
   4: rustc_mir::borrow_check::nll::compute_regions
   5: rustc_mir::borrow_check::do_mir_borrowck
   6: rustc_infer::infer::InferCtxtBuilder::enter
   7: rustc_mir::borrow_check::mir_borrowck
   8: core::ops::function::FnOnce::call_once
   9: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  10: rustc_query_system::query::plumbing::force_query_with_job
  11: rustc_query_system::query::plumbing::get_query_impl
  12: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::mir_borrowck
  13: rustc_typeck::collect::type_of::type_of
  14: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  15: rustc_data_structures::stack::ensure_sufficient_stack
  16: rustc_query_system::query::plumbing::force_query_with_job
  17: rustc_query_system::query::plumbing::get_query_impl
  18: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::type_of
  19: rustc_typeck::check::check::check_opaque
  20: rustc_typeck::check::check::check_item_type
  21: rustc_middle::hir::map::Map::visit_item_likes_in_module
  22: rustc_typeck::check::check::check_mod_item_types
  23: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  24: rustc_query_system::query::plumbing::force_query_with_job
  25: rustc_query_system::query::plumbing::get_query_impl
  26: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::check_mod_item_types
  27: rustc_session::utils::<impl rustc_session::session::Session>::time
  28: rustc_typeck::check_crate
  29: rustc_interface::passes::analysis
  30: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  31: rustc_data_structures::stack::ensure_sufficient_stack
  32: rustc_query_system::query::plumbing::force_query_with_job
  33: rustc_query_system::query::plumbing::get_query_impl
  34: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  35: rustc_interface::passes::QueryContext::enter
  36: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  37: rustc_span::with_source_map
  38: rustc_interface::interface::create_compiler_and_run
  39: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

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/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.53.0-nightly (07e0e2ec2 2021-03-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [mir_borrowck] borrow-checking `yes_double_ended_iterator`
#1 [type_of] computing type of `yes_double_ended_iterator::{opaque#0}`
#2 [check_mod_item_types] checking item types in top-level module
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0601, E0627, E0658.
For more information about an error, try `rustc --explain E0601`.

[Alexendoo]

Fixed by #91488