Skip to content

ICE: Unexpected type for constructor Variant(0): Alias(Opaque, AliasTy .. #139817

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom
Open
matthiaskrgr opened this issue Apr 14, 2025 · 1 comment
Open

ICE: Unexpected type for constructor Variant(0): Alias(Opaque, AliasTy .. #139817

matthiaskrgr opened this issue Apr 14, 2025 · 1 comment
Labels
C-bug Category: This is a bug. F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

Comments

@matthiaskrgr
Copy link
Member

auto-reduced (treereduce-rust):

fn enum_upvar() {
    type T = impl Copy;
    let foo: T = Some((42, std::marker::PhantomData::<T>));
    let x = move || match foo {
        None => (),
    };
}

original:

//@ check-pass

#![feature(type_alias_impl_trait)]

fn enum_upvar() {
    type T = impl Copy;
    let foo: T = Some((42, std::marker::PhantomData::<T>));
    let x = move || match foo {
        None => (),
        Some((a, b)) => (),
    };
}

fn main(){
    type Tait = impl Sized + 'static;
    spawn::<Tait, _>(move || sender)
}

Version information

rustc 1.88.0-nightly (c580c498a 2025-04-14)
binary: rustc
commit-hash: c580c498a1fe144d7c5b2dfc7faab1a229aa288b
commit-date: 2025-04-14
host: x86_64-unknown-linux-gnu
release: 1.88.0-nightly
LLVM version: 20.1.2

Possibly related line of code:

rust/compiler/rustc_pattern_analysis/src/rustc.rs

Lines 253 to 265 in c580c49

let skip = is_uninhabited && (!is_visible || is_unstable);
(ty, PrivateUninhabitedField(skip))
});
cx.dropless_arena.alloc_from_iter(tys)
}
}
_ => bug!("Unexpected type for constructor `{ctor:?}`: {ty:?}"),
},
Ref => match ty.kind() {
ty::Ref(_, rty, _) => reveal_and_alloc(cx, once(*rty)),
_ => bug!("Unexpected type for `Ref` constructor: {ty:?}"),
},
Slice(slice) => match *ty.kind() {

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output 

error[E0658]: `impl Trait` in type aliases is unstable
 --> /tmp/icemaker_global_tempdir.hHKPo6bbeRMr/rustc_testrunner_tmpdir_reporting.A6splXMwSkpr/mvce.rs:2:14
  |
2 |     type T = impl Copy;
  |              ^^^^^^^^^
  |
  = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information
  = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable
  = note: this compiler was built on 2025-04-14; consider upgrading it if it is out of date

error[E0601]: `main` function not found in crate `mvce`
 --> /tmp/icemaker_global_tempdir.hHKPo6bbeRMr/rustc_testrunner_tmpdir_reporting.A6splXMwSkpr/mvce.rs:7:2
  |
7 | }
  |  ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.hHKPo6bbeRMr/rustc_testrunner_tmpdir_reporting.A6splXMwSkpr/mvce.rs`

warning: unused variable: `x`
 --> /tmp/icemaker_global_tempdir.hHKPo6bbeRMr/rustc_testrunner_tmpdir_reporting.A6splXMwSkpr/mvce.rs:4:9
  |
4 |     let x = move || match foo {
  |         ^ help: if this is intentional, prefix it with an underscore: `_x`
  |
  = note: `#[warn(unused_variables)]` on by default

error: internal compiler error: compiler/rustc_pattern_analysis/src/rustc.rs:259:22: Unexpected type for constructor `Variant(0)`: Alias(Opaque, AliasTy { args: [], def_id: DefId(0:5 ~ mvce[28ab]::enum_upvar::T::{opaque#0}), .. })


thread 'rustc' panicked at compiler/rustc_pattern_analysis/src/rustc.rs:259:22:
Box<dyn Any>
stack backtrace:
   0:     0x723021cf5803 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::he137faf1a18df1db
   1:     0x723022406051 - core::fmt::write::h91755fbfaddf7ffb
   2:     0x7230238ae011 - std::io::Write::write_fmt::hc96efb08aa08a02e
   3:     0x723021cf5662 - std::sys::backtrace::BacktraceLock::print::ha70abd97698330ed
   4:     0x723021cf914a - std::panicking::default_hook::{{closure}}::h8caf203b8fc4b95a
   5:     0x723021cf8ccf - std::panicking::default_hook::h18654ff1fe4ed24b
   6:     0x723020d63603 - std[8cc451807e0e7beb]::panicking::update_hook::<alloc[73f72a203e12369d]::boxed::Box<rustc_driver_impl[c4ad34755bb049a3]::install_ice_hook::{closure#1}>>::{closure#0}
   7:     0x723021cf99c3 - std::panicking::rust_panic_with_hook::h76d5e98d413ceeff
   8:     0x723020da2161 - std[8cc451807e0e7beb]::panicking::begin_panic::<rustc_errors[440c2428a84582d1]::ExplicitBug>::{closure#0}
   9:     0x723020d96196 - std[8cc451807e0e7beb]::sys::backtrace::__rust_end_short_backtrace::<std[8cc451807e0e7beb]::panicking::begin_panic<rustc_errors[440c2428a84582d1]::ExplicitBug>::{closure#0}, !>
  10:     0x723020d92a7b - std[8cc451807e0e7beb]::panicking::begin_panic::<rustc_errors[440c2428a84582d1]::ExplicitBug>
  11:     0x723020dac531 - <rustc_errors[440c2428a84582d1]::diagnostic::BugAbort as rustc_errors[440c2428a84582d1]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  12:     0x7230213f61ba - rustc_middle[cdeaf14df3177256]::util::bug::opt_span_bug_fmt::<rustc_span[d423fa63ad2163fb]::span_encoding::Span>::{closure#0}
  13:     0x7230213d100a - rustc_middle[cdeaf14df3177256]::ty::context::tls::with_opt::<rustc_middle[cdeaf14df3177256]::util::bug::opt_span_bug_fmt<rustc_span[d423fa63ad2163fb]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  14:     0x7230213d0e7b - rustc_middle[cdeaf14df3177256]::ty::context::tls::with_context_opt::<rustc_middle[cdeaf14df3177256]::ty::context::tls::with_opt<rustc_middle[cdeaf14df3177256]::util::bug::opt_span_bug_fmt<rustc_span[d423fa63ad2163fb]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  15:     0x72301e68b760 - rustc_middle[cdeaf14df3177256]::util::bug::bug_fmt
  16:     0x723022d30eb7 - rustc_pattern_analysis[386c649c64cad14]::usefulness::compute_exhaustiveness_and_usefulness::<rustc_pattern_analysis[386c649c64cad14]::rustc::RustcPatCtxt>::{closure#0}
  17:     0x723022d16a93 - rustc_pattern_analysis[386c649c64cad14]::rustc::analyze_match
  18:     0x7230227ce9a7 - <rustc_mir_build[c533163d3a765291]::thir::pattern::check_match::MatchVisitor as rustc_middle[cdeaf14df3177256]::thir::visit::Visitor>::visit_expr
  19:     0x7230227ce587 - <rustc_mir_build[c533163d3a765291]::thir::pattern::check_match::MatchVisitor as rustc_middle[cdeaf14df3177256]::thir::visit::Visitor>::visit_expr
  20:     0x7230227d44b0 - rustc_mir_build[c533163d3a765291]::thir::pattern::check_match::check_match
  21:     0x7230227d40eb - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::check_match::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>>
  22:     0x723022c8c608 - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  23:     0x723022c8c23e - rustc_query_impl[994d8d0f232e6f76]::query_impl::check_match::get_query_non_incr::__rust_end_short_backtrace
  24:     0x7230227d9461 - rustc_mir_build[c533163d3a765291]::builder::build_mir
  25:     0x72302240a0c5 - rustc_mir_transform[a20fd6afc3bb3ae5]::mir_built
  26:     0x72302240a097 - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>
  27:     0x72302265c22c - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  28:     0x72302265bd4b - rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  29:     0x723022436baf - rustc_mir_transform[a20fd6afc3bb3ae5]::ffi_unwind_calls::has_ffi_unwind_calls
  30:     0x723022436759 - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::has_ffi_unwind_calls::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>>
  31:     0x723022c8c608 - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  32:     0x723022c8c2d2 - rustc_query_impl[994d8d0f232e6f76]::query_impl::has_ffi_unwind_calls::get_query_non_incr::__rust_end_short_backtrace
  33:     0x72301fa06aa5 - rustc_mir_transform[a20fd6afc3bb3ae5]::mir_promoted
  34:     0x7230227d1212 - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 16usize]>>
  35:     0x7230227d14aa - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 16usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  36:     0x7230227d105f - rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  37:     0x7230236a2eff - rustc_borrowck[2b49f7f4951f3059]::do_mir_borrowck
  38:     0x723022de9e53 - <rustc_borrowck[2b49f7f4951f3059]::root_cx::BorrowCheckRootCtxt>::get_or_insert_nested
  39:     0x723022dea115 - <rustc_borrowck[2b49f7f4951f3059]::type_check::TypeChecker>::prove_closure_bounds
  40:     0x72301f61dbe2 - <rustc_borrowck[2b49f7f4951f3059]::type_check::TypeChecker as rustc_middle[cdeaf14df3177256]::mir::visit::Visitor>::visit_rvalue
  41:     0x7230234191f8 - <rustc_borrowck[2b49f7f4951f3059]::type_check::TypeChecker as rustc_middle[cdeaf14df3177256]::mir::visit::Visitor>::visit_body
  42:     0x7230236b2d29 - rustc_borrowck[2b49f7f4951f3059]::do_mir_borrowck
  43:     0x72302369f911 - rustc_borrowck[2b49f7f4951f3059]::mir_borrowck
  44:     0x72302369f799 - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>
  45:     0x72302265c22c - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  46:     0x72302265bbcb - rustc_query_impl[994d8d0f232e6f76]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  47:     0x723020f72569 - <rustc_hir_analysis[9c3c5f969fccaefd]::collect::type_of::opaque::TaitConstraintLocator>::check
  48:     0x723020e59327 - rustc_hir[14d79ec8c47a11c9]::intravisit::walk_mod::<rustc_hir_analysis[9c3c5f969fccaefd]::collect::type_of::opaque::TaitConstraintLocator>
  49:     0x723020f7203d - rustc_hir_analysis[9c3c5f969fccaefd]::collect::type_of::opaque::find_opaque_ty_constraints_for_tait
  50:     0x7230241b6047 - rustc_hir_analysis[9c3c5f969fccaefd]::collect::type_of::type_of_opaque.cold
  51:     0x72302371a1ed - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>
  52:     0x72302273fe6f - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_query_system[fdd22cd2b18f3d20]::query::caches::DefIdCache<rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  53:     0x72302379d71d - rustc_query_impl[994d8d0f232e6f76]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
  54:     0x7230227474da - rustc_hir_analysis[9c3c5f969fccaefd]::collect::type_of::type_of
  55:     0x723022745bb8 - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>
  56:     0x72302273fe6f - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_query_system[fdd22cd2b18f3d20]::query::caches::DefIdCache<rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  57:     0x72302273fa1f - rustc_query_impl[994d8d0f232e6f76]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  58:     0x72302371aadd - rustc_hir_analysis[9c3c5f969fccaefd]::check::check::check_opaque
  59:     0x723022a702f7 - rustc_hir_analysis[9c3c5f969fccaefd]::check::check::check_item_type
  60:     0x723022c8fb5d - rustc_hir_analysis[9c3c5f969fccaefd]::check::wfcheck::check_well_formed
  61:     0x723022c8cfeb - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>>
  62:     0x723022c8c894 - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_data_structures[bb20cc737854270d]::vec_cache::VecCache<rustc_span[d423fa63ad2163fb]::def_id::LocalDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>, rustc_query_system[fdd22cd2b18f3d20]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  63:     0x723022c8c383 - rustc_query_impl[994d8d0f232e6f76]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  64:     0x723022c88ba8 - rustc_hir_analysis[9c3c5f969fccaefd]::check::wfcheck::check_mod_type_wf
  65:     0x723022c885dd - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>>
  66:     0x72302350cd99 - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_query_system[fdd22cd2b18f3d20]::query::caches::DefaultCache<rustc_span[d423fa63ad2163fb]::def_id::LocalModDefId, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  67:     0x72302350cb0a - rustc_query_impl[994d8d0f232e6f76]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  68:     0x723022659f66 - rustc_hir_analysis[9c3c5f969fccaefd]::check_crate
  69:     0x723022d709f4 - rustc_interface[89d8dc017f235532]::passes::run_required_analyses
  70:     0x723023346d1e - rustc_interface[89d8dc017f235532]::passes::analysis
  71:     0x723023346ced - rustc_query_impl[994d8d0f232e6f76]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[994d8d0f232e6f76]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 0usize]>>
  72:     0x72302334c7bd - rustc_query_system[fdd22cd2b18f3d20]::query::plumbing::try_execute_query::<rustc_query_impl[994d8d0f232e6f76]::DynamicConfig<rustc_query_system[fdd22cd2b18f3d20]::query::caches::SingleCache<rustc_middle[cdeaf14df3177256]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[994d8d0f232e6f76]::plumbing::QueryCtxt, false>
  73:     0x72302334c4b8 - rustc_query_impl[994d8d0f232e6f76]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  74:     0x72302373ccbe - rustc_interface[89d8dc017f235532]::passes::create_and_enter_global_ctxt::<core[9797c9d635bbf607]::option::Option<rustc_interface[89d8dc017f235532]::queries::Linker>, rustc_driver_impl[c4ad34755bb049a3]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
  75:     0x72302353ddc4 - rustc_interface[89d8dc017f235532]::interface::run_compiler::<(), rustc_driver_impl[c4ad34755bb049a3]::run_compiler::{closure#0}>::{closure#1}
  76:     0x7230235633b2 - std[8cc451807e0e7beb]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[89d8dc017f235532]::util::run_in_thread_with_globals<rustc_interface[89d8dc017f235532]::util::run_in_thread_pool_with_globals<rustc_interface[89d8dc017f235532]::interface::run_compiler<(), rustc_driver_impl[c4ad34755bb049a3]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  77:     0x723023563cab - <<std[8cc451807e0e7beb]::thread::Builder>::spawn_unchecked_<rustc_interface[89d8dc017f235532]::util::run_in_thread_with_globals<rustc_interface[89d8dc017f235532]::util::run_in_thread_pool_with_globals<rustc_interface[89d8dc017f235532]::interface::run_compiler<(), rustc_driver_impl[c4ad34755bb049a3]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[9797c9d635bbf607]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  78:     0x7230235650ab - std::sys::pal::unix::thread::Thread::new::thread_start::heb5f87066979571c
  79:     0x72301d2a370a - <unknown>
  80:     0x72301d327aac - <unknown>
  81:                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: please make sure that you have updated to the latest nightly

note: rustc 1.88.0-nightly (c580c498a 2025-04-14) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [check_match] match-checking `enum_upvar::{closure#0}`
#1 [mir_built] building MIR for `enum_upvar::{closure#0}`
#2 [has_ffi_unwind_calls] checking if `enum_upvar::{closure#0}` contains FFI-unwind calls
#3 [mir_promoted] promoting constants in MIR for `enum_upvar::{closure#0}`
#4 [mir_borrowck] borrow-checking `enum_upvar`
#5 [type_of_opaque] computing type of opaque `enum_upvar::T::{opaque#0}`
#6 [type_of] computing type of `enum_upvar::T::{opaque#0}`
#7 [check_well_formed] checking that `enum_upvar::T::{opaque#0}` is well-formed
#8 [check_mod_type_wf] checking that types are well-formed in top-level module
#9 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors; 1 warning emitted

Some errors have detailed explanations: E0601, E0658.
For more information about an error, try `rustc --explain E0601`.

@rustbot label +F-type_alias_impl_trait
@matthiaskrgr matthiaskrgr added C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Apr 14, 2025
@rustbot rustbot added needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` labels Apr 14, 2025
@matthiaskrgr
Copy link
Member Author

bisects to #139501

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
C-bug Category: This is a bug. F-type_alias_impl_trait `#[feature(type_alias_impl_trait)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@matthiaskrgr @rustbot