Closed
Description
Code
#![feature(const_generics)]
#![allow(dead_code, incomplete_features)]
#[derive(PartialEq, Eq)]
enum IceEnum {
Variant
}
struct IceStruct;
impl IceStruct {
fn ice_struct_fn<const I: IceEnum>() {}
}
fn ice_fn() {
IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
}Meta
rustc --version --verbose:
rustc 1.46.0-nightly (daecab3a7 2020-07-10)
binary: rustc
commit-hash: daecab3a784f28082df90cebb204998051f3557d
commit-date: 2020-07-10
host: x86_64-pc-windows-msvc
release: 1.46.0-nightly
LLVM version: 10.0
Error output
error: internal compiler error: unexpected const parent path Expr(Expr { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 10 }, kind: Path(TypeRelative(Ty { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 2 }, kind: Path(Resolved(None, Path { span: src\lib.rs:16:2: 16:48 (#0), res:
Def(Struct, DefId(0:3 ~ icetest[e2da]::IceStruct[0])), segments: [PathSegment { ident: IceStruct#0, hir_id: Some(HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 1 }), res: Some(Err), args: None, infer_args: true }] })), span: src\lib.rs:16:2: 16:48 (#0) }, PathSegment { ident: ice_struct_fn#0, hir_id: Some(HirId
{ owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 9 }), res: Some(Err), args: Some(GenericArgs { args: [Const(ConstArg { value: AnonConst { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 3 }, body: BodyId { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 8 } } }, span: src\lib.rs:16:29: 16:47 (#0) })], bindings: [], parenthesized: false }), infer_args: false })), attrs: ThinVec(None), span: src\lib.rs:16:2: 16:48 (#0) })
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: TyKind::Error constructed but no error reported
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: `ErrorReported` without an error
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:15:13
|
15 | fn ice_fn() {
| _____________^
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:16:2
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: PromoteTemps: MIR had errors
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: broken MIR in DefId(0:8 ~ icetest[e2da]::ice_fn[0]) ("return type"): bad type [type error]
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: broken MIR in DefId(0:8 ~ icetest[e2da]::ice_fn[0]) (LocalDecl { mutability: Mut, local_info: None, internal: false, is_block_tail: None, ty: [type error], user_ty: None, source_info: SourceInfo { span: src\lib.rs:15:1: 17:2 (#0), scope: scope[0] } }): bad type [type error]
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: mir_const_qualif: MIR had errors
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: PromoteTemps: MIR had errors
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: broken MIR in DefId(0:9 ~ icetest[e2da]::ice_fn[0]::{{constant}}[0]) ("return type"): bad type [type error]
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: broken MIR in DefId(0:9 ~ icetest[e2da]::ice_fn[0]::{{constant}}[0]) (LocalDecl { mutability: Mut, local_info: None, internal: false, is_block_tail: None, ty: [type error], user_ty: None, source_info: SourceInfo { span: src\lib.rs:16:29: 16:47 (#0), scope: scope[0] } }): bad type [type error]
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', src\librustc_errors\lib.rs:367:17
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/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.46.0-nightly (daecab3a7 2020-07-10) running on x86_64-pc-windows-msvc
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
error: could not compile `icetest`.
To learn more, run the command again with --verbose.
Backtrace
error: internal compiler error: unexpected const parent path Expr(Expr { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 10 }, kind: Path(TypeRelative(Ty { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 2 }, kind: Path(Resolved(None, Path { span: src\lib.rs:16:2: 16:48 (#0), res:
Def(Struct, DefId(0:3 ~ icetest[e2da]::IceStruct[0])), segments: [PathSegment { ident: IceStruct#0, hir_id: Some(HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 1 }), res: Some(Err), args: None, infer_args: true }] })), span: src\lib.rs:16:2: 16:48 (#0) }, PathSegment { ident: ice_struct_fn#0, hir_id: Some(HirId
{ owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 9 }), res: Some(Err), args: Some(GenericArgs { args: [Const(ConstArg { value: AnonConst { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 3 }, body: BodyId { hir_id: HirId { owner: DefId(0:8 ~ icetest[e2da]::ice_fn[0]), local_id: 8 } } }, span: src\lib.rs:16:29: 16:47 (#0) })], bindings: [], parenthesized: false }), infer_args: false })), attrs: ThinVec(None), span: src\lib.rs:16:2: 16:48 (#0) })
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: TyKind::Error constructed but no error reported
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: `ErrorReported` without an error
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:15:13
|
15 | fn ice_fn() {
| _____________^
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: cat_expr Errd
--> src\lib.rs:16:2
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: PromoteTemps: MIR had errors
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: broken MIR in DefId(0:8 ~ icetest[e2da]::ice_fn[0]) ("return type"): bad type [type error]
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: broken MIR in DefId(0:8 ~ icetest[e2da]::ice_fn[0]) (LocalDecl { mutability: Mut, local_info: None, internal: false, is_block_tail: None, ty: [type error], user_ty: None, source_info: SourceInfo { span: src\lib.rs:15:1: 17:2 (#0), scope: scope[0] } }): bad type [type error]
--> src\lib.rs:15:1
|
15 | / fn ice_fn() {
16 | | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
17 | | }
| |_^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: mir_const_qualif: MIR had errors
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: PromoteTemps: MIR had errors
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at /rustc/daecab3a784f28082df90cebb204998051f3557d\src\librustc_session\session.rs:436:27
error: internal compiler error: broken MIR in DefId(0:9 ~ icetest[e2da]::ice_fn[0]::{{constant}}[0]) ("return type"): bad type [type error]
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
error: internal compiler error: broken MIR in DefId(0:9 ~ icetest[e2da]::ice_fn[0]::{{constant}}[0]) (LocalDecl { mutability: Mut, local_info: None, internal: false, is_block_tail: None, ty: [type error], user_ty: None, source_info: SourceInfo { span: src\lib.rs:16:29: 16:47 (#0), scope: scope[0] } }): bad type [type error]
--> src\lib.rs:16:29
|
16 | IceStruct::ice_struct_fn::<{IceEnum::Variant}>();
| ^^^^^^^^^^^^^^^^^^
|
= note: delayed at src\librustc_mir\borrow_check\type_check\mod.rs:258:27
thread 'rustc' panicked at 'no errors encountered even though `delay_span_bug` issued', src\librustc_errors\lib.rs:367:17
stack backtrace:
0: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
1: core::fmt::write
2: <std::io::IoSliceMut as core::fmt::Debug>::fmt
3: std::panicking::take_hook
4: std::panicking::take_hook
5: rustc_driver::report_ice
6: std::panicking::rust_panic_with_hook
7: <rustc_errors::styled_buffer::StyledBuffer as core::fmt::Debug>::fmt
8: <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop
9: <rustc_driver::DEFAULT_HOOK as core::ops::deref::Deref>::deref
10: <rustc_driver::DEFAULT_HOOK as core::ops::deref::Deref>::deref
11: <rustc_span::def_id::CrateNum as rustc_middle::ty::query::keys::Key>::default_span
12: <rustc_expand::config::StripUnconfigured as rustc_ast::mut_visit::MutVisitor>::visit_mac
13: <env_logger::filter::inner::Filter as core::fmt::Display>::fmt
14: <rustc_driver::DEFAULT_HOOK as core::ops::deref::Deref>::deref
15: <rustc_driver::DEFAULT_HOOK as core::ops::deref::Deref>::deref
16: <rustc_span::def_id::CrateNum as rustc_middle::ty::query::keys::Key>::default_span
17: std::sys::windows::thread::Thread::new
18: BaseThreadInitThunk
19: RtlUserThreadStart
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/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.46.0-nightly (daecab3a7 2020-07-10) running on x86_64-pc-windows-msvc
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:
end of query stack
error: could not compile `icetest`.
To learn more, run the command again with --verbose.
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Area: const generics (parameters and arguments)Category: This is a bug.`#![feature(const_generics)]`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.This issue requires a nightly compiler in some way.