ICE: unexpected bound var resolution

[matthiaskrgr]

Code

#![feature(non_lifetime_binders)]
#![crate_type = "lib"]
fn a() where for<const C: usize> [(); C]: Copy {}

Meta

rustc --version --verbose:

rustc 1.70.0-nightly (7b4f48927 2023-03-12)
binary: rustc
commit-hash: 7b4f48927dce585f747a58083b45ab62b9d73a53
commit-date: 2023-03-12
host: x86_64-unknown-linux-gnu
release: 1.70.0-nightly
LLVM version: 15.0.7

Error output

warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes
 --> 369F0080915517E17111EE245F5EA4DFDB20ACBA83676D6A364219263BA449A5.rs:1:12
  |
1 | #![feature(non_lifetime_binders)]
  |            ^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
  = note: `#[warn(incomplete_features)]` on by default

error: cannot capture late-bound const parameter in a constant
 --> 369F0080915517E17111EE245F5EA4DFDB20ACBA83676D6A364219263BA449A5.rs:4:39
  |
4 | fn a() where for<const C: usize> [(); C]: Copy {}
  |                  --------------       ^
  |                  |
  |                  parameter defined here

Backtrace

error: internal compiler error: compiler/rustc_middle/src/ty/consts.rs:158:28: unexpected bound var resolution for HirId(DefId(0:3 ~ 369F0080915517E17111EE245F5EA4DFDB20ACBA83676D6A364219263BA449A5[c773]::a).9): None

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/compiler/rustc_errors/src/lib.rs:1644:9
stack backtrace:
   0:     0x7fa1fd75251a - std::backtrace_rs::backtrace::libunwind::trace::hf7d75cca16fd1b61
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fa1fd75251a - std::backtrace_rs::backtrace::trace_unsynchronized::hf5ec95734aab509d
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fa1fd75251a - std::sys_common::backtrace::_print_fmt::he95113413355c8cd
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fa1fd75251a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h072d12f2e69ca92b
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fa1fd7b5c5e - core::fmt::write::h1d23f16415e96af2
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/core/src/fmt/mod.rs:1232:17
   5:     0x7fa1fd745275 - std::io::Write::write_fmt::hcf1e413fde4ffcd5
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/io/mod.rs:1684:15
   6:     0x7fa1fd7522e5 - std::sys_common::backtrace::_print::h6b2b14bedd5177e7
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fa1fd7522e5 - std::sys_common::backtrace::print::h09ccebfbcd382e89
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fa1fd75505f - std::panicking::default_hook::{{closure}}::h4ee055db778febc2
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:271:22
   9:     0x7fa1fd754d9b - std::panicking::default_hook::ha74f60e3a15d95fb
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:290:9
  10:     0x7fa1fc497085 - rustc_driver_impl[d355a67661263e47]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7fa1fd75589d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7f34603beb945e8f
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:2002:9
  12:     0x7fa1fd75589d - std::panicking::rust_panic_with_hook::h4b5d379936d4932f
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/panicking.rs:696:13
  13:     0x7fa1fca02371 - std[e52d7c968ed01318]::panicking::begin_panic::<rustc_errors[45159b7f7e36021d]::ExplicitBug>::{closure#0}
  14:     0x7fa1fc9fdaa6 - std[e52d7c968ed01318]::sys_common::backtrace::__rust_end_short_backtrace::<std[e52d7c968ed01318]::panicking::begin_panic<rustc_errors[45159b7f7e36021d]::ExplicitBug>::{closure#0}, !>
  15:     0x7fa1fca86046 - std[e52d7c968ed01318]::panicking::begin_panic::<rustc_errors[45159b7f7e36021d]::ExplicitBug>
  16:     0x7fa1fca51e06 - std[e52d7c968ed01318]::panic::panic_any::<rustc_errors[45159b7f7e36021d]::ExplicitBug>
  17:     0x7fa1fca4d966 - <rustc_errors[45159b7f7e36021d]::HandlerInner>::bug::<&alloc[fc860cae0dfa1ab1]::string::String>
  18:     0x7fa1fca4d630 - <rustc_errors[45159b7f7e36021d]::Handler>::bug::<&alloc[fc860cae0dfa1ab1]::string::String>
  19:     0x7fa1fca39a9b - rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt::<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}
  20:     0x7fa1fca384fa - rustc_middle[a96ac5d591578447]::ty::context::tls::with_opt::<rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7fa1fca384c6 - rustc_middle[a96ac5d591578447]::ty::context::tls::with_context_opt::<rustc_middle[a96ac5d591578447]::ty::context::tls::with_opt<rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt<rustc_span[f8bdfaef83e46314]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7fa1fca399e6 - rustc_middle[a96ac5d591578447]::util::bug::opt_span_bug_fmt::<rustc_span[f8bdfaef83e46314]::span_encoding::Span>
  23:     0x7fa1faab44b3 - rustc_middle[a96ac5d591578447]::util::bug::bug_fmt
  24:     0x7fa1fb687d9b - <rustc_middle[a96ac5d591578447]::ty::consts::Const>::from_opt_const_arg_anon_const
  25:     0x7fa1fb2f7c3f - <dyn rustc_hir_analysis[357075c2c3fc2a7b]::astconv::AstConv>::ast_ty_to_ty_inner::{closure#0}
  26:     0x7fa1faa3d3d5 - rustc_hir_analysis[357075c2c3fc2a7b]::collect::predicates_of::gather_explicit_predicates_of
  27:     0x7fa1faa3b1d8 - rustc_hir_analysis[357075c2c3fc2a7b]::collect::predicates_of::explicit_predicates_of
  28:     0x7fa1faa36e54 - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::explicit_predicates_of, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
  29:     0x7fa1faa4df73 - rustc_hir_analysis[357075c2c3fc2a7b]::collect::predicates_defined_on
  30:     0x7fa1faa4c596 - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::predicates_defined_on, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
  31:     0x7fa1fb0358b5 - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::predicates_of, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
  32:     0x7fa1fb03455f - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::predicates_of
  33:     0x7fa1fac7be02 - <rustc_hir_analysis[357075c2c3fc2a7b]::collect::CollectItemTypesVisitor as rustc_hir[4aa57babd8685147]::intravisit::Visitor>::visit_item
  34:     0x7fa1fac7a925 - <rustc_middle[a96ac5d591578447]::hir::map::Map>::visit_item_likes_in_module::<rustc_hir_analysis[357075c2c3fc2a7b]::collect::CollectItemTypesVisitor>
  35:     0x7fa1fac7a84c - rustc_hir_analysis[357075c2c3fc2a7b]::collect::collect_mod_item_types
  36:     0x7fa1fbac706e - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::collect_mod_item_types, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
  37:     0x7fa1fbac6bf3 - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::collect_mod_item_types
  38:     0x7fa1fa7b0363 - <rustc_session[7e23441c2db8ce4a]::session::Session>::track_errors::<rustc_hir_analysis[357075c2c3fc2a7b]::check_crate::{closure#0}, ()>
  39:     0x7fa1fa7acce2 - rustc_hir_analysis[357075c2c3fc2a7b]::check_crate
  40:     0x7fa1fa7a2d12 - rustc_interface[6bf42eb308c32713]::passes::analysis
  41:     0x7fa1fbcab71c - rustc_query_system[704b80a7bc44cd49]::query::plumbing::try_execute_query::<rustc_query_impl[217bee59c5548bf5]::queries::analysis, rustc_query_impl[217bee59c5548bf5]::plumbing::QueryCtxt>
  42:     0x7fa1fbcab410 - <rustc_query_impl[217bee59c5548bf5]::Queries as rustc_middle[a96ac5d591578447]::ty::query::QueryEngine>::analysis
  43:     0x7fa1fbad02f9 - <rustc_middle[a96ac5d591578447]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>
  44:     0x7fa1fb6c8498 - rustc_span[f8bdfaef83e46314]::with_source_map::<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  45:     0x7fa1fb6bf70c - std[e52d7c968ed01318]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[6bf42eb308c32713]::util::run_in_thread_pool_with_globals<rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>
  46:     0x7fa1fb6bf13a - <<std[e52d7c968ed01318]::thread::Builder>::spawn_unchecked_<rustc_interface[6bf42eb308c32713]::util::run_in_thread_pool_with_globals<rustc_interface[6bf42eb308c32713]::interface::run_compiler<core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>, rustc_driver_impl[d355a67661263e47]::run_compiler::{closure#1}>::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[125d846441ac421f]::result::Result<(), rustc_span[f8bdfaef83e46314]::ErrorGuaranteed>>::{closure#1} as core[125d846441ac421f]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fa1fd75f793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc0a50816e1eb2bba
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:1988:9
  48:     0x7fa1fd75f793 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb2f83fc2049033c3
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/alloc/src/boxed.rs:1988:9
  49:     0x7fa1fd75f793 - std::sys::unix::thread::Thread::new::thread_start::hce5861512f8bf7ea
                               at /rustc/7b4f48927dce585f747a58083b45ab62b9d73a53/library/std/src/sys/unix/thread.rs:108:17
  50:     0x7fa1f909ebb5 - <unknown>
  51:     0x7fa1f9120d90 - <unknown>
  52:                0x0 - <unknown>

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 1.70.0-nightly (7b4f48927 2023-03-12) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [explicit_predicates_of] computing explicit predicates of `a`
#1 [predicates_defined_on] computing predicates of `a`
#2 [predicates_of] computing predicates of `a`
#3 [collect_mod_item_types] collecting item types in top-level module
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors; 1 warning emitted

[compiler-errors]

This is the same test as #108194, the ICE just changed in the last 3 weeks.