ICE: compiler/rustc_passes/src/check_attr.rs:873:21: should be a function item

[chengniansun]

Code

impl T {
    #[rustc_args_required_const(1)]
    fn is_null() {}
}

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[E0412]: cannot find type `T` in this scope
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:6
  |
1 | impl T {
  |      ^ not found in this scope

error[E0658]: this is an internal attribute that will never be stable
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     #[rustc_args_required_const(1)]
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(rustc_attrs)]` 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 | / impl T {
2 | |     #[rustc_args_required_const(1)]
3 | |     fn is_null() {}
4 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error: internal compiler error: compiler/rustc_passes/src/check_attr.rs:873:21: should be a function item

thread 'rustc' panicked at 'Box<Any>', /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597/library/std/src/panic.rs:59:5
note: run with `RUST_BACKTRACE=1` environment variable to display a 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 1.53.0-nightly (07e0e2ec2 2021-03-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_mod_attrs] checking attributes in top-level module
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0412, E0601, E0658.
For more information about an error, try `rustc --explain E0412`.

Backtrace

error[E0412]: cannot find type `T` in this scope
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:6
  |
1 | impl T {
  |      ^ not found in this scope

error[E0658]: this is an internal attribute that will never be stable
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:5
  |
2 |     #[rustc_args_required_const(1)]
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(rustc_attrs)]` 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 | / impl T {
2 | |     #[rustc_args_required_const(1)]
3 | |     fn is_null() {}
4 | | }
  | |_^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error: internal compiler error: compiler/rustc_passes/src/check_attr.rs:873:21: should be a function item

thread 'rustc' panicked at 'Box<Any>', /rustc/07e0e2ec268c140e607e1ac7f49f145612d0f597/library/std/src/panic.rs:59:5
stack backtrace:
   0: std::panicking::begin_panic
   1: std::panic::panic_any
   2: rustc_errors::HandlerInner::bug
   3: rustc_errors::Handler::bug
   4: rustc_middle::ty::context::tls::with_opt
   5: rustc_middle::util::bug::opt_span_bug_fmt
   6: rustc_middle::util::bug::bug_fmt
   7: rustc_passes::check_attr::CheckAttrVisitor::check_attributes
   8: <rustc_passes::check_attr::CheckAttrVisitor as rustc_hir::intravisit::Visitor>::visit_impl_item
   9: rustc_middle::hir::map::Map::visit_item_likes_in_module
  10: rustc_passes::check_attr::check_mod_attrs
  11: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  12: rustc_query_system::query::plumbing::force_query_with_job
  13: rustc_query_system::query::plumbing::get_query_impl
  14: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::check_mod_attrs
  15: std::panic::catch_unwind
  16: rustc_session::utils::<impl rustc_session::session::Session>::time
  17: rustc_interface::passes::analysis
  18: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  19: rustc_data_structures::stack::ensure_sufficient_stack
  20: rustc_query_system::query::plumbing::force_query_with_job
  21: rustc_query_system::query::plumbing::get_query_impl
  22: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  23: rustc_interface::passes::QueryContext::enter
  24: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  25: rustc_span::with_source_map
  26: rustc_interface::interface::create_compiler_and_run
  27: scoped_tls::ScopedKey<T>::set
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 1.53.0-nightly (07e0e2ec2 2021-03-24) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_mod_attrs] checking attributes in top-level module
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors

Some errors have detailed explanations: E0412, E0601, E0658.
For more information about an error, try `rustc --explain E0412`.

[Alexendoo]

rustc_args_required_const has been removed - #85110