Closed
Description
Code
fn main () {
match x {
Some :: <v<>>(v) => ()
}
}
Meta
rustc --version --verbose
:
rustc 1.52.0-nightly (51748a8fc 2021-03-05)
binary: rustc
commit-hash: 51748a8fc77283914d4135f31b5966a407208187
commit-date: 2021-03-05
host: x86_64-unknown-linux-gnu
release: 1.52.0-nightly
LLVM version: 12.0.0
Error output
error[E0425]: cannot find value `x` in this scope
--> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:9
|
2 | match x {
| ^ not found in this scope
error[E0573]: expected type, found local variable `v`
--> perses_node_priority_with_dfs_delta_reduced_mutant.rs:3:14
|
3 | Some :: <v<>>(v) => ()
| ^^^ not a type
thread 'rustc' panicked at 'expected `NodeId` to be lowered already for res Local(
NodeId(20),
)', compiler/rustc_ast_lowering/src/lib.rs:715:17
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 1.52.0-nightly (51748a8fc 2021-03-05) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0425, E0573.
For more information about an error, try `rustc --explain E0425`.
Backtrace
error[E0425]: cannot find value `x` in this scope
--> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:9
|
2 | match x {
| ^ not found in this scope
error[E0573]: expected type, found local variable `v`
--> perses_node_priority_with_dfs_delta_reduced_mutant.rs:3:14
|
3 | Some :: <v<>>(v) => ()
| ^^^ not a type
thread 'rustc' panicked at 'expected `NodeId` to be lowered already for res Local(
NodeId(20),
)', compiler/rustc_ast_lowering/src/lib.rs:715:17
stack backtrace:
0: rust_begin_unwind
at /rustc/51748a8fc77283914d4135f31b5966a407208187/library/std/src/panicking.rs:493:5
1: std::panicking::begin_panic_fmt
at /rustc/51748a8fc77283914d4135f31b5966a407208187/library/std/src/panicking.rs:435:5
2: rustc_ast_lowering::LoweringContext::lower_node_id_generic
3: rustc_ast_lowering::path::<impl rustc_ast_lowering::LoweringContext>::lower_path_segment
4: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once
5: rustc_ast_lowering::path::<impl rustc_ast_lowering::LoweringContext>::lower_qpath
6: rustc_ast_lowering::LoweringContext::lower_ty_direct
7: rustc_ast_lowering::LoweringContext::lower_generic_arg
8: <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend
9: rustc_ast_lowering::path::<impl rustc_ast_lowering::LoweringContext>::lower_angle_bracketed_parameter_data
10: rustc_ast_lowering::path::<impl rustc_ast_lowering::LoweringContext>::lower_path_segment
11: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once
12: rustc_ast_lowering::path::<impl rustc_ast_lowering::LoweringContext>::lower_qpath
13: rustc_ast_lowering::pat::<impl rustc_ast_lowering::LoweringContext>::lower_pat::{{closure}}
14: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_arm
15: rustc_ast_lowering::Arena::alloc_from_iter
16: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_expr_mut::{{closure}}
17: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
18: <core::iter::adapters::flatten::Flatten<I> as core::iter::traits::iterator::Iterator>::next
19: <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend
20: rustc_arena::cold_path
21: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_fn_body_block
22: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_item
23: rustc_ast_lowering::LoweringContext::with_hir_id_owner
24: rustc_ast_lowering::lower_crate
25: rustc_interface::passes::BoxedResolver::access::{{closure}}
26: rustc_interface::passes::configure_and_expand::{{closure}}
27: rustc_interface::passes::BoxedResolver::access
28: rustc_interface::queries::Queries::lower_to_hir
29: rustc_interface::queries::Queries::global_ctxt
30: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
31: rustc_span::with_source_map
32: rustc_interface::interface::create_compiler_and_run
33: rustc_span::with_session_globals
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 1.52.0-nightly (51748a8fc 2021-03-05) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 2 previous errors
Some errors have detailed explanations: E0425, E0573.
For more information about an error, try `rustc --explain E0425`.
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Area: Compiler frontend (errors, parsing and HIR)Category: This is a bug.Call for participation: An issue has been fixed and does not reproduce, but no test has been added.Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Relevant to the compiler team, which will review and decide on the PR/issue.ICE tracked in rust-lang/glacier.