Closed
Description
It seems duplicated as #79537 and #80978. However, as these issues are closed (maybe indicating there are solved?), I open this one.
I apologize in advance for any possible inconvenience.
Code
fn e() -> x {
if *let x = 0 { xThe md5 is: a52dcf5eee71e25184963e0c2f62a9d1
Meta
This ICE only occurs on nightly version.
rustc --version --verbose:
➜ playground rustc --version --verbose
rustc 1.51.0-nightly (23adf9fd8 2021-02-05)
binary: rustc
commit-hash: 23adf9fd843da7a3394c824b056f93151aaa40ad
commit-date: 2021-02-05
host: x86_64-unknown-linux-gnu
release: 1.51.0-nightly
LLVM version: 11.0.1
Error output
➜ playground rustc poc.rs
error: this file contains an unclosed delimiter
--> poc.rs:2:23
|
1 | fn e() -> x {
| - unclosed delimiter
2 | if *let x = 0 { x
| - ^
| |
| unclosed delimiter
error[E0412]: cannot find type `x` in this scope
--> poc.rs:1:11
|
1 | fn e() -> x {
| ^ not found in this scope
error[E0658]: `let` expressions in this position are experimental
--> poc.rs:2:9
|
2 | if *let x = 0 { x
| ^^^^^^^^^
|
= note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
= help: add `#![feature(let_chains)]` to the crate attributes to enable
thread 'rustc' panicked at 'expected `NodeId` to be lowered already for res Local(
NodeId(15),
)', compiler/rustc_ast_lowering/src/lib.rs:714:17
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 1.51.0-nightly (23adf9fd8 2021-02-05) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0412, E0658.
For more information about an error, try `rustc --explain E0412`.
Backtrace
➜ playground RUST_BACKTRACE=1 rustc poc.rs
error: this file contains an unclosed delimiter
--> poc.rs:2:23
|
1 | fn e() -> x {
| - unclosed delimiter
2 | if *let x = 0 { x
| - ^
| |
| unclosed delimiter
error[E0412]: cannot find type `x` in this scope
--> poc.rs:1:11
|
1 | fn e() -> x {
| ^ not found in this scope
error[E0658]: `let` expressions in this position are experimental
--> poc.rs:2:9
|
2 | if *let x = 0 { x
| ^^^^^^^^^
|
= note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
= help: add `#![feature(let_chains)]` to the crate attributes to enable
thread 'rustc' panicked at 'expected `NodeId` to be lowered already for res Local(
NodeId(15),
)', compiler/rustc_ast_lowering/src/lib.rs:714:17
stack backtrace:
0: rust_begin_unwind
at /rustc/23adf9fd843da7a3394c824b056f93151aaa40ad/library/std/src/panicking.rs:493:5
1: std::panicking::begin_panic_fmt
at /rustc/23adf9fd843da7a3394c824b056f93151aaa40ad/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_qpath
4: rustc_data_structures::stack::ensure_sufficient_stack
5: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
6: <core::iter::adapters::flatten::Flatten<I> as core::iter::traits::iterator::Iterator>::next
7: <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend
8: rustc_arena::cold_path
9: rustc_ast_lowering::expr::<impl rustc_ast_lowering::LoweringContext>::lower_expr_if
10: rustc_data_structures::stack::ensure_sufficient_stack
11: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
12: <core::iter::adapters::flatten::Flatten<I> as core::iter::traits::iterator::Iterator>::next
13: <smallvec::SmallVec<A> as core::iter::traits::collect::Extend<<A as smallvec::Array>::Item>>::extend
14: rustc_arena::cold_path
15: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_fn_body_block
16: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_maybe_async_body
17: rustc_ast_lowering::item::<impl rustc_ast_lowering::LoweringContext>::lower_item
18: rustc_ast_lowering::LoweringContext::with_hir_id_owner
19: <rustc_ast_lowering::item::ItemLowerer as rustc_ast::visit::Visitor>::visit_mod
20: rustc_ast_lowering::lower_crate
21: rustc_interface::passes::BoxedResolver::access::{{closure}}
22: rustc_interface::passes::configure_and_expand::{{closure}}
23: rustc_interface::passes::BoxedResolver::access
24: rustc_interface::queries::Queries::lower_to_hir
25: rustc_interface::queries::Queries::global_ctxt
26: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
27: rustc_span::with_source_map
28: rustc_interface::interface::create_compiler_and_run
29: 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 1.51.0-nightly (23adf9fd8 2021-02-05) running on x86_64-unknown-linux-gnu
query stack during panic:
end of query stack
error: aborting due to 3 previous errors
Some errors have detailed explanations: E0412, E0658.
For more information about an error, try `rustc --explain E0412`.