cargo doc ICEs during const/trait eval
#93882
Labels
C-bug
Category: This is a bug.
F-generic_const_exprs
`#![feature(generic_const_exprs)]`
glacier
ICE tracked in rust-lang/glacier.
I-ICE
Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️
requires-incomplete-features
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
T-rustdoc
Relevant to the rustdoc team, which will review and decide on the PR/issue.
Comments
workingjubilee
added
I-ICE
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Could you run a backtrace with |
oli-obk
added
the
T-rustdoc
|
No difference, apparently...? |
|
oh well, thanks for trying. Maybe rustdoc uses different environment variables. cc @rust-lang/rustdoc |
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For rustdoc environment variables, it's |
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Or use the |
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Ah, Backtraceerror: internal compiler error: Encountered errors `[FulfillmentError(Obligation(predicate=Binder(TraitPredicate(<T as core::marker::Sized>, polarity:Positive), []), depth=1),Unimplemented), FulfillmentError(Obligation(predicate=Binder(TraitPredicate(<T as core_simd::MaskElement>, polarity:Positive), []), depth=1),Unimplemented)]` resolving bounds outside of type inference
thread 'rustc' panicked at 'aborting due to `-Z treat-err-as-bug=1`', compiler/rustc_errors/src/lib.rs:1200:27
stack backtrace:
0: 0x7f3a77b7cb6c - std::backtrace_rs::backtrace::libunwind::trace::h824347123a539ac3
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f3a77b7cb6c - std::backtrace_rs::backtrace::trace_unsynchronized::h30996243a6d4a816
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f3a77b7cb6c - std::sys_common::backtrace::_print_fmt::he0e84aa8853fdb2a
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys_common/backtrace.rs:66:5
3: 0x7f3a77b7cb6c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h699cf46bd548daad
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys_common/backtrace.rs:45:22
4: 0x7f3a77bde24c - core::fmt::write::hc21dca261faff02f
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/core/src/fmt/mod.rs:1190:17
5: 0x7f3a77b6ce98 - std::io::Write::write_fmt::ha562dab75b1aee7a
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/io/mod.rs:1657:15
6: 0x7f3a77b80ae7 - std::sys_common::backtrace::_print::h6995311cb4b18c83
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys_common/backtrace.rs:48:5
7: 0x7f3a77b80ae7 - std::sys_common::backtrace::print::h5c00a73bc75b17c4
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys_common/backtrace.rs:35:9
8: 0x7f3a77b80ae7 - std::panicking::default_hook::{{closure}}::he5c22156c1cfda73
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/panicking.rs:295:22
9: 0x7f3a77b807af - std::panicking::default_hook::hd9340e2830e1e464
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/panicking.rs:314:9
10: 0x7f3a7830dd91 - rustc_driver[f7ae5b3e036b262e]::DEFAULT_HOOK::{closure#0}::{closure#0}
11: 0x7f3a77b813c5 - std::panicking::rust_panic_with_hook::hb17e9d2f86437995
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/panicking.rs:702:17
12: 0x7f3a77b81039 - std::panicking::begin_panic_handler::{{closure}}::h5ea470c57cd887ae
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/panicking.rs:586:13
13: 0x7f3a77b7d014 - std::sys_common::backtrace::__rust_end_short_backtrace::hdf89f68b6e6aa66b
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys_common/backtrace.rs:138:18
14: 0x7f3a77b80d79 - rust_begin_unwind
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/panicking.rs:584:5
15: 0x7f3a77b48d03 - core::panicking::panic_fmt::h0b506cc131461e16
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/core/src/panicking.rs:143:14
16: 0x7f3a793fe82e - <rustc_errors[59c9bb132555b663]::HandlerInner>::panic_if_treat_err_as_bug
17: 0x7f3a7aa7f7e4 - <rustc_errors[59c9bb132555b663]::HandlerInner>::emit_diagnostic
18: 0x7f3a7912a391 - <rustc_errors[59c9bb132555b663]::HandlerInner>::emit_diag_at_span::<rustc_span[eca3046f9c14e76]::span_encoding::Span>
19: 0x7f3a7912a363 - <rustc_errors[59c9bb132555b663]::HandlerInner>::span_bug::<rustc_span[eca3046f9c14e76]::span_encoding::Span>
20: 0x7f3a7912cef5 - <rustc_session[e825f980c6f8a293]::session::Session>::delay_span_bug::<rustc_span[eca3046f9c14e76]::span_encoding::Span>
21: 0x7f3a79ee185a - <rustc_infer[8ea8801e962e8d71]::infer::InferCtxtBuilder>::enter::<core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::traits::ImplSource<()>, rustc_errors[59c9bb132555b663]::ErrorReported>, rustc_trait_selection[f7534e1344bd6007]::traits::codegen::codegen_fulfill_obligation::{closure#0}>
22: 0x7f3a79f6d21a - rustc_trait_selection[f7534e1344bd6007]::traits::codegen::codegen_fulfill_obligation
23: 0x7f3a79c064cc - rustc_query_system[fb683e47e947d40]::query::plumbing::try_execute_query::<rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt, rustc_query_system[fb683e47e947d40]::query::caches::DefaultCache<(rustc_middle[69fe71bd9bb50da9]::ty::ParamEnv, rustc_middle[69fe71bd9bb50da9]::ty::sty::Binder<rustc_middle[69fe71bd9bb50da9]::ty::sty::TraitRef>), core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::traits::ImplSource<()>, rustc_errors[59c9bb132555b663]::ErrorReported>>>
24: 0x7f3a79c4ef2a - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::codegen_fulfill_obligation
25: 0x7f3a79814517 - rustc_ty_utils[76f99f00e579ed4c]::instance::inner_resolve_instance
26: 0x7f3a79813626 - rustc_ty_utils[76f99f00e579ed4c]::instance::resolve_instance
27: 0x7f3a79c19f3b - rustc_query_system[fb683e47e947d40]::query::plumbing::get_query::<rustc_query_impl[576a7c6b4634b180]::queries::resolve_instance, rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt>
28: 0x7f3a79c51dfb - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::resolve_instance
29: 0x7f3a7a0afd75 - <rustc_middle[69fe71bd9bb50da9]::ty::instance::Instance>::resolve_opt_const_arg
30: 0x7f3a7a9da5cb - <rustc_middle[69fe71bd9bb50da9]::ty::context::TyCtxt>::const_eval_resolve
31: 0x7f3a79f65514 - <rustc_trait_selection[f7534e1344bd6007]::traits::query::normalize::QueryNormalizer as rustc_middle[69fe71bd9bb50da9]::ty::fold::FallibleTypeFolder>::try_fold_const
32: 0x7f3a79f65801 - <rustc_trait_selection[f7534e1344bd6007]::traits::query::normalize::QueryNormalizer as rustc_middle[69fe71bd9bb50da9]::ty::fold::FallibleTypeFolder>::try_fold_mir_const
33: 0x7f3a79bb2b15 - <rustc_infer[8ea8801e962e8d71]::infer::InferCtxtBuilder>::enter::<core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind, rustc_middle[69fe71bd9bb50da9]::traits::query::NoSolution>, rustc_traits[401f2dcba686126]::normalize_erasing_regions::try_normalize_after_erasing_regions<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind>::{closure#0}>
34: 0x7f3a79bbdc98 - <rustc_traits[401f2dcba686126]::normalize_erasing_regions::provide::{closure#1} as core[b9efde14e06b09ed]::ops::function::FnOnce<(rustc_middle[69fe71bd9bb50da9]::ty::context::TyCtxt, rustc_middle[69fe71bd9bb50da9]::ty::ParamEnvAnd<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind>)>>::call_once
35: 0x7f3a79bd84b8 - rustc_query_system[fb683e47e947d40]::query::plumbing::try_execute_query::<rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt, rustc_query_system[fb683e47e947d40]::query::caches::DefaultCache<rustc_middle[69fe71bd9bb50da9]::ty::ParamEnvAnd<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind>, core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind, rustc_middle[69fe71bd9bb50da9]::traits::query::NoSolution>>>
36: 0x7f3a79c519b4 - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::try_normalize_mir_const_after_erasing_regions
37: 0x7f3a7a121c7f - <rustc_middle[69fe71bd9bb50da9]::ty::normalize_erasing_regions::TryNormalizeAfterErasingRegionsFolder as rustc_middle[69fe71bd9bb50da9]::ty::fold::FallibleTypeFolder>::try_fold_mir_const
38: 0x7f3a7a5be733 - <rustc_const_eval[7cfdc43ee7de405e]::interpret::eval_context::InterpCx<rustc_const_eval[7cfdc43ee7de405e]::const_eval::machine::CompileTimeInterpreter>>::subst_from_current_frame_and_normalize_erasing_regions::<rustc_middle[69fe71bd9bb50da9]::mir::ConstantKind>
39: 0x7f3a79ad058c - <rustc_const_eval[7cfdc43ee7de405e]::interpret::eval_context::InterpCx<rustc_const_eval[7cfdc43ee7de405e]::const_eval::machine::CompileTimeInterpreter>>::push_stack_frame
40: 0x7f3a79b5e849 - rustc_const_eval[7cfdc43ee7de405e]::const_eval::eval_queries::eval_to_allocation_raw_provider
41: 0x7f3a79bd9ac2 - rustc_query_system[fb683e47e947d40]::query::plumbing::try_execute_query::<rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt, rustc_query_system[fb683e47e947d40]::query::caches::DefaultCache<rustc_middle[69fe71bd9bb50da9]::ty::ParamEnvAnd<rustc_middle[69fe71bd9bb50da9]::mir::interpret::GlobalId>, core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::mir::interpret::value::ConstAlloc, rustc_middle[69fe71bd9bb50da9]::mir::interpret::error::ErrorHandled>>>
42: 0x7f3a79c4a73f - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::eval_to_allocation_raw
43: 0x7f3a79b5d493 - rustc_const_eval[7cfdc43ee7de405e]::const_eval::eval_queries::eval_to_const_value_raw_provider
44: 0x7f3a79bda9b7 - rustc_query_system[fb683e47e947d40]::query::plumbing::try_execute_query::<rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt, rustc_query_system[fb683e47e947d40]::query::caches::DefaultCache<rustc_middle[69fe71bd9bb50da9]::ty::ParamEnvAnd<rustc_middle[69fe71bd9bb50da9]::mir::interpret::GlobalId>, core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::mir::interpret::value::ConstValue, rustc_middle[69fe71bd9bb50da9]::mir::interpret::error::ErrorHandled>>>
45: 0x7f3a79c4a8fb - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::eval_to_const_value_raw
46: 0x7f3a79b5d1d6 - rustc_const_eval[7cfdc43ee7de405e]::const_eval::eval_queries::eval_to_const_value_raw_provider
47: 0x7f3a79bda9b7 - rustc_query_system[fb683e47e947d40]::query::plumbing::try_execute_query::<rustc_query_impl[576a7c6b4634b180]::plumbing::QueryCtxt, rustc_query_system[fb683e47e947d40]::query::caches::DefaultCache<rustc_middle[69fe71bd9bb50da9]::ty::ParamEnvAnd<rustc_middle[69fe71bd9bb50da9]::mir::interpret::GlobalId>, core[b9efde14e06b09ed]::result::Result<rustc_middle[69fe71bd9bb50da9]::mir::interpret::value::ConstValue, rustc_middle[69fe71bd9bb50da9]::mir::interpret::error::ErrorHandled>>>
48: 0x7f3a79c4a8fb - <rustc_query_impl[576a7c6b4634b180]::Queries as rustc_middle[69fe71bd9bb50da9]::ty::query::QueryEngine>::eval_to_const_value_raw
49: 0x7f3a7a063225 - <rustc_middle[69fe71bd9bb50da9]::ty::context::TyCtxt>::const_eval_global_id
50: 0x7f3a7a9da609 - <rustc_middle[69fe71bd9bb50da9]::ty::context::TyCtxt>::const_eval_resolve
51: 0x560e221a9b5a - <&rustc_middle[69fe71bd9bb50da9]::ty::TyS as rustdoc[e5ecb062f4162e39]::clean::Clean<rustdoc[e5ecb062f4162e39]::clean::types::Type>>::clean
52: 0x560e22026bbf - rustdoc[e5ecb062f4162e39]::clean::clean_fn_decl_from_did_and_sig
53: 0x560e21fdda29 - <rustc_middle[69fe71bd9bb50da9]::ty::assoc::AssocItem as rustdoc[e5ecb062f4162e39]::clean::Clean<rustdoc[e5ecb062f4162e39]::clean::types::Item>>::clean
54: 0x560e21f9385f - <alloc[14a0d6d4553afc6a]::vec::Vec<rustdoc[e5ecb062f4162e39]::clean::types::Item> as alloc[14a0d6d4553afc6a]::vec::spec_from_iter::SpecFromIter<rustdoc[e5ecb062f4162e39]::clean::types::Item, core[b9efde14e06b09ed]::iter::adapters::filter_map::FilterMap<core[b9efde14e06b09ed]::iter::adapters::map::Map<core[b9efde14e06b09ed]::iter::adapters::map::Map<core[b9efde14e06b09ed]::slice::iter::Iter<(rustc_span[eca3046f9c14e76]::symbol::Symbol, &rustc_middle[69fe71bd9bb50da9]::ty::assoc::AssocItem)>, <rustc_data_structures[291ebb7c081c24f5]::sorted_map::index_map::SortedIndexMultiMap<u32, rustc_span[eca3046f9c14e76]::symbol::Symbol, &rustc_middle[69fe71bd9bb50da9]::ty::assoc::AssocItem>>::iter::{closure#0}>, <rustc_middle[69fe71bd9bb50da9]::ty::assoc::AssocItems>::in_definition_order::{closure#0}>, rustdoc[e5ecb062f4162e39]::clean::inline::build_impl<core[b9efde14e06b09ed]::option::Option<rustc_span[eca3046f9c14e76]::def_id::DefId>>::{closure#3}>>>::from_iter
55: 0x560e2209ab1a - rustdoc[e5ecb062f4162e39]::clean::inline::build_impl::<core[b9efde14e06b09ed]::option::Option<rustc_span[eca3046f9c14e76]::def_id::DefId>>
56: 0x560e220faac1 - <rustdoc[e5ecb062f4162e39]::core::DocContext>::with_all_trait_impls::<rustdoc[e5ecb062f4162e39]::passes::collect_trait_impls::collect_trait_impls::{closure#3}>
57: 0x560e2215ae37 - rustdoc[e5ecb062f4162e39]::passes::collect_trait_impls::collect_trait_impls
58: 0x560e21ef19c4 - <rustc_session[e825f980c6f8a293]::session::Session>::time::<rustdoc[e5ecb062f4162e39]::clean::types::Crate, rustdoc[e5ecb062f4162e39]::core::run_global_ctxt::{closure#8}>
59: 0x560e220ff413 - rustdoc[e5ecb062f4162e39]::core::run_global_ctxt
60: 0x560e21ef1e42 - <rustc_session[e825f980c6f8a293]::session::Session>::time::<(rustdoc[e5ecb062f4162e39]::clean::types::Crate, rustdoc[e5ecb062f4162e39]::config::RenderOptions, rustdoc[e5ecb062f4162e39]::formats::cache::Cache), rustdoc[e5ecb062f4162e39]::main_options::{closure#0}::{closure#0}::{closure#1}::{closure#0}>
61: 0x560e2212b890 - <rustc_interface[f21518ebe01ac716]::passes::QueryContext>::enter::<rustdoc[e5ecb062f4162e39]::main_options::{closure#0}::{closure#0}::{closure#1}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>
62: 0x560e2209f8be - <rustc_interface[f21518ebe01ac716]::interface::Compiler>::enter::<rustdoc[e5ecb062f4162e39]::main_options::{closure#0}::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>
63: 0x560e2212d9bc - rustc_span[eca3046f9c14e76]::with_source_map::<core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>, rustc_interface[f21518ebe01ac716]::interface::create_compiler_and_run<core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>, rustdoc[e5ecb062f4162e39]::main_options::{closure#0}>::{closure#1}>
64: 0x560e2209062d - rustc_interface[f21518ebe01ac716]::interface::create_compiler_and_run::<core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>, rustdoc[e5ecb062f4162e39]::main_options::{closure#0}>
65: 0x560e21edd6cd - rustdoc[e5ecb062f4162e39]::main_options
66: 0x560e21fc8a8d - <scoped_tls[e9ba5f945198f548]::ScopedKey<rustc_span[eca3046f9c14e76]::SessionGlobals>>::set::<rustc_interface[f21518ebe01ac716]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustdoc[e5ecb062f4162e39]::main_args::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>::{closure#0}::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>
67: 0x560e22068d39 - std[1e60cef5fcfeb639]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[f21518ebe01ac716]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustdoc[e5ecb062f4162e39]::main_args::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>
68: 0x560e21ef0ae9 - <<std[1e60cef5fcfeb639]::thread::Builder>::spawn_unchecked_<rustc_interface[f21518ebe01ac716]::util::setup_callbacks_and_run_in_thread_pool_with_globals<rustdoc[e5ecb062f4162e39]::main_args::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>::{closure#0}, core[b9efde14e06b09ed]::result::Result<(), rustc_errors[59c9bb132555b663]::ErrorReported>>::{closure#1} as core[b9efde14e06b09ed]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
69: 0x7f3a77b8ce13 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6b24c31e6604f724
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/alloc/src/boxed.rs:1854:9
70: 0x7f3a77b8ce13 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h357a4d585864792d
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/alloc/src/boxed.rs:1854:9
71: 0x7f3a77b8ce13 - std::sys::unix::thread::Thread::new::thread_start::h571ee483c9a2c616
at /rustc/e7aca895980f25f6d2d3c48e10fd04656764d1e4/library/std/src/sys/unix/thread.rs:108:17
72: 0x7f3a77aa4259 - start_thread
73: 0x7f3a7785a5e3 - __GI___clone
74: 0x0 - <unknown>
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 1.60.0-nightly (e7aca8959 2022-02-09) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type lib -Z treat-err-as-bug
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `core_simd::core_simd::masks::to_bitmask::ToBitMaskArray` fulfills its obligations
#1 [resolve_instance] resolving instance `<core_simd::core_simd::masks::Mask<T, 32_usize> as core_simd::core_simd::masks::to_bitmask::ToBitMaskArray>::BYTES`
#2 [try_normalize_mir_const_after_erasing_regions] normalizing `<core_simd::core_simd::masks::Mask<T, 32_usize> as core_simd::core_simd::masks::to_bitmask::ToBitMaskArray>::BYTES`
#3 [eval_to_allocation_raw] const-evaluating + checking `<core_simd::core_simd::masks::Mask<T, 32_usize> as core_simd::core_simd::masks::to_bitmask::ToBitMaskArray>::to_bitmask_array::{constant#0}`
#4 [eval_to_const_value_raw] simplifying constant for the type system `<core_simd::core_simd::masks::Mask<T, 32_usize> as core_simd::core_simd::masks::to_bitmask::ToBitMaskArray>::to_bitmask_array::{constant#0}`
#5 [eval_to_const_value_raw] simplifying constant for the type system `<core_simd::core_simd::masks::Mask<T, 32_usize> as core_simd::core_simd::masks::to_bitmask::ToBitMaskArray>::to_bitmask_array::{constant#0}`
end of query stack |
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I also am running into this bug with a very similar-looking backtrace. Managed to create a minimal example: #![feature(generic_const_exprs)]
pub trait Const {
const N: usize;
}
pub trait Arr<T>: Const {
type Arr;
}
impl<T, C: Const> Arr<T> for C
where
[T; C::N]:,
{
type Arr = [T; C::N];
}Backtrace: |
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As far as can tell without spinning up an IDE the |
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this may be somewhat OT, but
I can absolutely understand why rustdoc needs to have its own FLAGS for compilation, and I can see how it would be useful into the future especially, but it would be nice if rustdoc accepted debugging flags like this one from RUSTFLAGS. Or maybe |
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You don't necessarily want the rust flags for rustdoc while playing with both though. |
fanninpm
added a commit
to fanninpm/glacier
that referenced
this issue
Feb 15, 2022
Issue: rust-lang/rust#93882
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Hmm. No, I actually can't think of a situation where I would want -Ztreat-err-as-bug to not apply to rustdoc. |
Hmm, I don't know if this is quiiite the same, @clarfonthey, because @calebzulawski was actually trying to remove |
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That's fair; I'd be interested to see if you manage to narrow down a minimal case what yours would be. That said, I think @oli-obk's analysis is probably right. |
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i'm also experiencing this (with in the workspace, the crate that defines the trait documents without any errors. i can try to get a minimal example working, but for now, the specific workspace where this occurs is this. the trait is defined in the crate $ rustc +nightly --version --verbose
rustc 1.62.0-nightly (e1b71feb5 2022-05-03)
binary: rustc
commit-hash: e1b71feb592ba64805689e2b15b9fa570182c442
commit-date: 2022-05-03
host: x86_64-unknown-linux-gnu
release: 1.62.0-nightly
LLVM version: 14.0.1backtrace |
workingjubilee
added
F-generic_const_exprs
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Code
It's... kinda hard to thin this down, because it only breaks when I run
cargo docin the workspace of this commit:rust-lang/portable-simd@744169a
It may be due to PG-PSIMD's own sins against a sensible compilation flow, but also it may not be! I am not sure.
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rustc --version --verbose:Error output
Backtrace
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