ICE: `field.0.is_sized()`
matthiaskrgr opened this issue · 4 comments
matthiaskrgr commented
Code
use std::sync::OnceLock;
pub struct WeakOnce<T>(OnceLock<dyn Iterator<Item: '_>>);
pub(crate) static ONCE: WeakOnce<Context> = WeakOnce::new();Meta
rustc --version --verbose:
rustc 1.73.0-nightly (4c8bb79d9 2023-07-15)
binary: rustc
commit-hash: 4c8bb79d9f565115637cc6da739f8389e79f3a29
commit-date: 2023-07-15
host: x86_64-unknown-linux-gnu
release: 1.73.0-nightly
LLVM version: 16.0.5
Error output
error[E0106]: missing lifetime specifier
--> treereduce.out:3:52
|
3 | pub struct WeakOnce<T>(OnceLock<dyn Iterator<Item: '_>>);
| ^^ expected named lifetime parameter
|
= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
help: consider making the bound lifetime-generic with a new `'a` lifetime
|
3 | pub struct WeakOnce<T>(OnceLock<dyn for<'a> Iterator<Item: 'a>>);
| +++++++ ~~
help: consider introducing a named lifetime parameter
|
3 | pub struct WeakOnce<'a, T>(OnceLock<dyn Iterator<Item: 'a>>);
| +++ ~~
error[E0412]: cannot find type `Context` in this scope
--> treereduce.out:5:34
|
5 | pub(crate) static ONCE: WeakOnce<Context> = WeakOnce::new();
| ^^^^^^^ not found in this scope
|
help: consider importing this struct
|
1 + use std::task::Context;
|
error[E0658]: associated type bounds are unstable
--> treereduce.out:3:46
|
3 | pub struct WeakOnce<T>(OnceLock<dyn Iterator<Item: '_>>);
| ^^^^^^^^
|
= note: see issue #52662 <https://github.com/rust-lang/rust/issues/52662> for more information
= help: add `#![feature(associated_type_bounds)]` to the crate attributes to enable
error: associated type bounds are only allowed in where clauses and function signatures, not in field types
--> treereduce.out:3:46
|
3 | pub struct WeakOnce<T>(OnceLock<dyn Iterator<Item: '_>>);
| ^^^^^^^^
error[E0601]: `main` function not found in crate `treereduce`
--> treereduce.out:5:61
|
5 | pub(crate) static ONCE: WeakOnce<Context> = WeakOnce::new();
| ^ consider adding a `main` function to `treereduce.out`
error[E0599]: no function or associated item named `new` found for struct `WeakOnce` in the current scope
--> treereduce.out:5:55
|
3 | pub struct WeakOnce<T>(OnceLock<dyn Iterator<Item: '_>>);
| ---------------------- function or associated item `new` not found for this struct
4 |
5 | pub(crate) static ONCE: WeakOnce<Context> = WeakOnce::new();
| ^^^ function or associated item not found in `WeakOnce<_>`
Backtrace
thread 'rustc' panicked at 'assertion failed: field.0.is_sized()', /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/compiler/rustc_abi/src/layout.rs:766:13
stack backtrace:
0: 0x7f048a1641e1 - std::backtrace_rs::backtrace::libunwind::trace::h3b5c50f24cf4b35a
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f048a1641e1 - std::backtrace_rs::backtrace::trace_unsynchronized::he026a26ead582316
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f048a1641e1 - std::sys_common::backtrace::_print_fmt::h76fd67678968a4e3
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7f048a1641e1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdd83524e3f3c2be2
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f048a1ca19c - core::fmt::rt::Argument::fmt::h654276e7f109452e
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/fmt/rt.rs:138:9
5: 0x7f048a1ca19c - core::fmt::write::h138407e966f7b43b
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/fmt/mod.rs:1094:21
6: 0x7f048a156b8e - std::io::Write::write_fmt::h2424dcece48dafda
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/io/mod.rs:1714:15
7: 0x7f048a163ff5 - std::sys_common::backtrace::_print::hed0bf89a99fb894c
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f048a163ff5 - std::sys_common::backtrace::print::h247f5c941c9353a5
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f048a166da3 - std::panicking::default_hook::{{closure}}::hcccd6b964b717049
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:269:22
10: 0x7f048a166b34 - std::panicking::default_hook::hce795b61120bca6d
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:288:9
11: 0x7f048d3f827b - <rustc_driver_impl[36a7eaa3807b03c1]::install_ice_hook::{closure#0} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(&core[81c8fe8a09de0f06]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
12: 0x7f048a1675ce - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3187784b6c983a99
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2021:9
13: 0x7f048a1675ce - std::panicking::rust_panic_with_hook::h46c9d18986d08847
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:709:13
14: 0x7f048a167311 - std::panicking::begin_panic_handler::{{closure}}::h9240e694e6b0cb3e
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:595:13
15: 0x7f048a164646 - std::sys_common::backtrace::__rust_end_short_backtrace::h37d9a711c5606b4e
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys_common/backtrace.rs:151:18
16: 0x7f048a1670a2 - rust_begin_unwind
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/panicking.rs:593:5
17: 0x7f048a1c6543 - core::panicking::panic_fmt::hb353582dad440800
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/panicking.rs:67:14
18: 0x7f048a1c65d3 - core::panicking::panic::hfb3ea9ceb774db6b
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/core/src/panicking.rs:117:5
19: 0x7f048c333230 - <rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutCx<rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt> as rustc_abi[8d56ae912b876514]::layout::LayoutCalculator>::layout_of_union
20: 0x7f048c31b39b - rustc_ty_utils[3b78d04571512db1]::layout::layout_of
21: 0x7f048b437f3e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
22: 0x7f048bdaa4b1 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
23: 0x7f048bdaa102 - rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
24: 0x7f048b54e615 - <core[81c8fe8a09de0f06]::iter::adapters::GenericShunt<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::FieldDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}::{closure#0}>>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::next
25: 0x7f048c320329 - core[81c8fe8a09de0f06]::iter::adapters::try_process::<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}>>, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>, <core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::try_collect<rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>::{closure#0}, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>
26: 0x7f048c31a0cc - rustc_ty_utils[3b78d04571512db1]::layout::layout_of
27: 0x7f048b437f3e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
28: 0x7f048bdaa4b1 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
29: 0x7f048bdaa102 - rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
30: 0x7f048b54e615 - <core[81c8fe8a09de0f06]::iter::adapters::GenericShunt<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::FieldDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}::{closure#0}>>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::next
31: 0x7f048c32039b - core[81c8fe8a09de0f06]::iter::adapters::try_process::<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}>>, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>, <core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::try_collect<rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>::{closure#0}, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>
32: 0x7f048c31a0cc - rustc_ty_utils[3b78d04571512db1]::layout::layout_of
33: 0x7f048b437f3e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
34: 0x7f048bdaa4b1 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
35: 0x7f048bdaa102 - rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
36: 0x7f048c32096e - rustc_middle[bafd45fe52eb4faf]::query::plumbing::query_get_at::<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>>
37: 0x7f048c31af15 - rustc_ty_utils[3b78d04571512db1]::layout::layout_of
38: 0x7f048b437f3e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
39: 0x7f048bdaa4b1 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
40: 0x7f048bdaa102 - rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
41: 0x7f048b54e615 - <core[81c8fe8a09de0f06]::iter::adapters::GenericShunt<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::FieldDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}::{closure#0}>>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::next
42: 0x7f048c320329 - core[81c8fe8a09de0f06]::iter::adapters::try_process::<core[81c8fe8a09de0f06]::iter::adapters::by_ref_sized::ByRefSized<core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}>>, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::convert::Infallible, &rustc_middle[bafd45fe52eb4faf]::ty::layout::LayoutError>, <core[81c8fe8a09de0f06]::iter::adapters::map::Map<core[81c8fe8a09de0f06]::slice::iter::Iter<rustc_middle[bafd45fe52eb4faf]::ty::VariantDef>, rustc_ty_utils[3b78d04571512db1]::layout::layout_of_uncached::{closure#8}> as core[81c8fe8a09de0f06]::iter::traits::iterator::Iterator>::try_collect<rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>::{closure#0}, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::VariantIdx, rustc_index[662aeb3083791134]::vec::IndexVec<rustc_abi[8d56ae912b876514]::FieldIdx, rustc_abi[8d56ae912b876514]::Layout>>>
43: 0x7f048c31a0cc - rustc_ty_utils[3b78d04571512db1]::layout::layout_of
44: 0x7f048b437f3e - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>
45: 0x7f048bdaa4b1 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
46: 0x7f048bdaa102 - rustc_query_impl[f1760b35ee71e15a]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
47: 0x7f048c3bf883 - rustc_middle[bafd45fe52eb4faf]::query::plumbing::query_get_at::<rustc_query_system[a39b5eca44b3ed3c]::query::caches::DefaultCache<rustc_middle[bafd45fe52eb4faf]::ty::ParamEnvAnd<rustc_middle[bafd45fe52eb4faf]::ty::Ty>, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 16usize]>>>
48: 0x7f048c3bee43 - rustc_hir_analysis[51ced00d18f9db10]::check::check::check_static_inhabited
49: 0x7f048c3a9856 - rustc_hir_analysis[51ced00d18f9db10]::check::check::check_mod_item_types
50: 0x7f048c15db6c - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 0usize]>>
51: 0x7f048c15db4e - <rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, rustc_span[d4de8c39017ea598]::def_id::LocalDefId)>>::call_once
52: 0x7f048bd52b2f - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::VecCache<rustc_span[d4de8c39017ea598]::def_id::LocalDefId, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
53: 0x7f048cd2da22 - rustc_query_impl[f1760b35ee71e15a]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
54: 0x7f048c8af077 - <rustc_middle[bafd45fe52eb4faf]::hir::map::Map>::for_each_module::<rustc_hir_analysis[51ced00d18f9db10]::check_crate::{closure#6}::{closure#0}>
55: 0x7f048c8ae2ed - <rustc_session[b1a5d361b73cfad9]::session::Session>::time::<(), rustc_hir_analysis[51ced00d18f9db10]::check_crate::{closure#6}>
56: 0x7f048c8acf1a - rustc_hir_analysis[51ced00d18f9db10]::check_crate
57: 0x7f048c8a433a - rustc_interface[b60702df0ae80ef4]::passes::analysis
58: 0x7f048c87fb3a - rustc_query_impl[f1760b35ee71e15a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 1usize]>>
59: 0x7f048c87fb29 - <rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::dynamic_query::{closure#2} as core[81c8fe8a09de0f06]::ops::function::FnOnce<(rustc_middle[bafd45fe52eb4faf]::ty::context::TyCtxt, ())>>::call_once
60: 0x7f048ca5bc68 - rustc_query_system[a39b5eca44b3ed3c]::query::plumbing::try_execute_query::<rustc_query_impl[f1760b35ee71e15a]::DynamicConfig<rustc_query_system[a39b5eca44b3ed3c]::query::caches::SingleCache<rustc_middle[bafd45fe52eb4faf]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[f1760b35ee71e15a]::plumbing::QueryCtxt, false>
61: 0x7f048ca5ba47 - rustc_query_impl[f1760b35ee71e15a]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
62: 0x7f048c66e835 - <rustc_middle[bafd45fe52eb4faf]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
63: 0x7f048c66de62 - <rustc_interface[b60702df0ae80ef4]::interface::Compiler>::enter::<rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}::{closure#2}, core[81c8fe8a09de0f06]::result::Result<core[81c8fe8a09de0f06]::option::Option<rustc_interface[b60702df0ae80ef4]::queries::Linker>, rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
64: 0x7f048c6671d5 - rustc_span[d4de8c39017ea598]::set_source_map::<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
65: 0x7f048c666c46 - <scoped_tls[121ecede58d5c05f]::ScopedKey<rustc_span[d4de8c39017ea598]::SessionGlobals>>::set::<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
66: 0x7f048c66620c - std[fa39155a576d62c5]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b60702df0ae80ef4]::util::run_in_thread_pool_with_globals<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>
67: 0x7f048c665fce - <<std[fa39155a576d62c5]::thread::Builder>::spawn_unchecked_<rustc_interface[b60702df0ae80ef4]::util::run_in_thread_pool_with_globals<rustc_interface[b60702df0ae80ef4]::interface::run_compiler<core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>, rustc_driver_impl[36a7eaa3807b03c1]::run_compiler::{closure#1}>::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[81c8fe8a09de0f06]::result::Result<(), rustc_span[d4de8c39017ea598]::ErrorGuaranteed>>::{closure#1} as core[81c8fe8a09de0f06]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
68: 0x7f048a171c55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h83f49025b00909a5
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2007:9
69: 0x7f048a171c55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h21b0d4679eed4e05
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/alloc/src/boxed.rs:2007:9
70: 0x7f048a171c55 - std::sys::unix::thread::Thread::new::thread_start::h030641e4e4790460
at /rustc/4c8bb79d9f565115637cc6da739f8389e79f3a29/library/std/src/sys/unix/thread.rs:108:17
71: 0x7f0489f0444b - <unknown>
72: 0x7f0489f87e40 - <unknown>
73: 0x0 - <unknown>
error: 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 1.73.0-nightly (4c8bb79d9 2023-07-15) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [layout_of] computing layout of `core::mem::maybe_uninit::MaybeUninit<dyn core::iter::traits::iterator::Iterator<Item = {type error}>>`
#1 [layout_of] computing layout of `core::cell::UnsafeCell<core::mem::maybe_uninit::MaybeUninit<dyn core::iter::traits::iterator::Iterator<Item = {type error}>>>`
#2 [layout_of] computing layout of `std::sync::once_lock::OnceLock<dyn core::iter::traits::iterator::Iterator<Item = {type error}>>`
#3 [layout_of] computing layout of `std::sync::once_lock::OnceLock<(dyn core::iter::traits::iterator::Iterator<Item = {type error}> + 'static)>`
#4 [layout_of] computing layout of `WeakOnce<{type error}>`
#5 [check_mod_item_types] checking item types in top-level module
#6 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 6 previous errors
Some errors have detailed explanations: E0106, E0412, E0599, E0601, E0658.
For more information about an error, try `rustc --explain E0106`.
matthiaskrgr commented
Crashes 1.72.0-beta.1 but not stable 1.71.0
Regression in rust-lang-ci@4c221b7
#112340 cc @lcnr
compiler-errors commented
Since this went from error -> ICE (specifically because it's neither valid code, and also would need the associated_type_bounds flag even if it were valid), I don't think this needs prioritization and/or the regression tag.
compiler-errors commented
Minimized too:
union W<T> { s: dyn Iterator<Item = Missing> }
static ONCE: W<()> = todo!();Or even more minimal:
union W { s: dyn Iterator<Item = Missing> }
static ONCE: W = todo!();compiler-errors commented
Also, this didn't really regress in #112340. Before that PR, it ICEd with a slighlty different repro:
union W<T> { t: T, s: dyn Iterator<Item = Missing> }
static ONCE: W<()> = todo!();Specifically, if you get rid of the "parameter T is never used" error by actually mentioning it in that union W above, then it'll ICE even before #112340.
It probably just regressed in whatever PR introduced that assertion that got triggered.