ICE "Unexpected free regions in MIR" with asm_const, missing constant, async, and lifetime parameter

[jruderman]

Found with a modified fuzz-rustc

Code

#![feature(asm_const)]

use std::arch::asm;

async unsafe fn foo<'a>() {
    asm!("/* {0} */", const N);
}

fn main() {}

Requires rustc built with debug assertions enabled

Requires --edition=2021 for async

Error output

error[E0425]: cannot find value N in this scope

thread 'rustc' panicked at compiler/rustc_mir_build/src/build/mod.rs:96:5:
Unexpected free regions in MIR

Full output including backtrace

error[E0425]: cannot find value `N` in this scope
 --> a1.rs:6:29
  |
6 |     asm!("/* {0} */", const N);
  |                             ^ not found in this scope
  |
help: you might be missing a const parameter
  |
5 | async unsafe fn foo<'a, const N: /* Type */>() {
  |                       +++++++++++++++++++++

thread 'rustc' panicked at compiler/rustc_mir_build/src/build/mod.rs:96:5:
Unexpected free regions in MIR: Body { basic_blocks: BasicBlocks { basic_blocks: [BasicBlockData { statements: [StorageLive(_3), _3 = const ()], terminator: Some(Terminator { source_info: SourceInfo { span: a1.rs:6:5: 6:31 (#0), scope: scope[0] }, kind: asm!("/* {0} */", const const _, options((empty))) -> [return: bb1, unwind unreachable] }), is_cleanup: false }, BasicBlockData { statements: [StorageDead(_3), _0 = const ()], terminator: Some(Terminator { source_info: SourceInfo { span: a1.rs:7:1: 7:2 (#99), scope: scope[0] }, kind: drop(_1) -> [return: bb2, unwind: bb3] }), is_cleanup: false }, BasicBlockData { statements: [], terminator: Some(Terminator { source_info: SourceInfo { span: a1.rs:7:2: 7:2 (#0), scope: scope[0] }, kind: return }), is_cleanup: false }, BasicBlockData { statements: [], terminator: Some(Terminator { source_info: SourceInfo { span: a1.rs:5:27: 7:2 (#0), scope: scope[0] }, kind: resume }), is_cleanup: true }], cache: Cache { predecessors: OnceLock(<uninit>), switch_sources: OnceLock(<uninit>), is_cyclic: OnceLock(<uninit>), reverse_postorder: OnceLock(<uninit>), dominators: OnceLock(<uninit>) } }, phase: Built, pass_count: 0, source: MirSource { instance: Item(DefId(0:6 ~ a1[ee4d]::foo::{closure#0})), promoted: None }, source_scopes: [SourceScopeData { span: a1.rs:5:27: 7:2 (#0), parent_scope: None, inlined: None, inlined_parent_scope: None, local_data: Set(SourceScopeLocalData { lint_root: HirId(DefId(0:4 ~ a1[ee4d]::foo).14), safety: Safe }) }], coroutine: Some(CoroutineInfo { yield_ty: Some(()), coroutine_drop: None, coroutine_layout: None, coroutine_kind: Async(Fn) }), local_decls: [LocalDecl { mutability: Mut, local_info: Set(Boring), ty: (), user_ty: None, source_info: SourceInfo { span: a1.rs:5:27: 7:2 (#0), scope: scope[0] } }, LocalDecl { mutability: Mut, local_info: Set(Boring), ty: Coroutine(DefId(0:6 ~ a1[ee4d]::foo::{closure#0}), [ReErased, std::future::ResumeTy, (), (), CoroutineWitness(DefId(0:6 ~ a1[ee4d]::foo::{closure#0}), [ReErased]), ()], Static), user_ty: None, source_info: SourceInfo { span: a1.rs:5:27: 7:2 (#0), scope: scope[0] } }, LocalDecl { mutability: Mut, local_info: Set(User(Var(VarBindingForm { binding_mode: BindByValue(Mut), opt_ty_info: Some(a1.rs:5:27: 7:2 (#98)), opt_match_place: Some((None, a1.rs:5:27: 7:2 (#0))), pat_span: a1.rs:5:27: 7:2 (#0) }))), ty: std::future::ResumeTy, user_ty: None, source_info: SourceInfo { span: a1.rs:5:27: 7:2 (#0), scope: scope[0] } }, LocalDecl { mutability: Not, local_info: Set(Boring), ty: (), user_ty: None, source_info: SourceInfo { span: a1.rs:6:5: 6:31 (#0), scope: scope[0] } }], user_type_annotations: [], arg_count: 2, spread_arg: Some(_2), var_debug_info: [_task_context => _2], span: a1.rs:5:27: 7:2 (#0), required_consts: [], is_polymorphic: false, injection_phase: None, tainted_by_errors: None, function_coverage_info: None }
stack backtrace:
   0:        0x10e3489c7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h32be08e4a73e3127
   1:        0x10e3cf41b - core::fmt::write::h4c5ea57c49d24c93
   2:        0x10e342a08 - std::io::Write::write_fmt::haa537118f333bb71
   3:        0x10e348805 - std::sys_common::backtrace::print::h49c807e14db1ec16
   4:        0x10e30def5 - std::panicking::default_hook::{{closure}}::h2b7bc953cf5d346a
   5:        0x10e30dcdf - std::panicking::default_hook::h31b936663a54995c
   6:        0x1213b470b - <alloc[e900fb129f34e26c]::boxed::Box<rustc_driver_impl[620352f41765b051]::install_ice_hook::{closure#0}> as core[141871ccc4260175]::ops::function::Fn<(&dyn for<'a, 'b> core[141871ccc4260175]::ops::function::Fn<(&'a core[141871ccc4260175]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[141871ccc4260175]::marker::Send + core[141871ccc4260175]::marker::Sync, &core[141871ccc4260175]::panic::panic_info::PanicInfo)>>::call
   7:        0x10e30e623 - std::panicking::rust_panic_with_hook::h15d5ee8b9f2b330f
   8:        0x10e32bafa - std::panicking::begin_panic_handler::{{closure}}::haa22ae33ba8c5851
   9:        0x10e32ba29 - std::sys_common::backtrace::__rust_end_short_backtrace::hb6bd07feb4607006
  10:        0x10e30dfed - _rust_begin_unwind
  11:        0x10e3e8485 - core::panicking::panic_fmt::h6bceaa1f01563255
  12:        0x12501d57e - rustc_mir_build[43102d1e30c3b96d]::build::mir_built
  13:        0x125577cc9 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_built::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  14:        0x12559e71d - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_built::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  15:        0x1256a43e9 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  16:        0x12595a034 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  17:        0x12572d8c3 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_built::get_query_non_incr::__rust_end_short_backtrace
  18:        0x12483f2a7 - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  19:        0x124840801 - rustc_mir_transform[68f8150185f640cd]::check_unsafety::unsafety_check_result
  20:        0x125568819 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  21:        0x125718bed - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  22:        0x1256a43e9 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  23:        0x12595a034 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  24:        0x12583e623 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
  25:        0x12483f2a7 - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  26:        0x12483f68c - <rustc_mir_transform[68f8150185f640cd]::check_unsafety::UnsafetyChecker as rustc_middle[705d4043bf578f72]::mir::visit::Visitor>::visit_rvalue
  27:        0x12467ad72 - <rustc_mir_transform[68f8150185f640cd]::check_unsafety::UnsafetyChecker as rustc_middle[705d4043bf578f72]::mir::visit::Visitor>::visit_body
  28:        0x124840af9 - rustc_mir_transform[68f8150185f640cd]::check_unsafety::unsafety_check_result
  29:        0x125568819 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  30:        0x125718bed - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  31:        0x1256a43e9 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  32:        0x12595a034 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  33:        0x12583e623 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::unsafety_check_result::get_query_non_incr::__rust_end_short_backtrace
  34:        0x1248cb735 - rustc_middle[705d4043bf578f72]::query::plumbing::query_ensure::<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  35:        0x1248ce763 - rustc_mir_transform[68f8150185f640cd]::mir_const
  36:        0x125577e99 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_const::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  37:        0x1255945cd - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_const::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  38:        0x1256a43e9 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  39:        0x12595a034 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  40:        0x12557a303 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_const::get_query_non_incr::__rust_end_short_backtrace
  41:        0x1248cbd47 - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  42:        0x1248cebd6 - rustc_mir_transform[68f8150185f640cd]::mir_promoted
  43:        0x125554e5e - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_promoted::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 16usize]>>
  44:        0x12563d8db - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_promoted::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  45:        0x1256a3f4d - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 16usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 16usize]>>
  46:        0x12594f1e0 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  47:        0x12583cbe6 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_promoted::get_query_non_incr::__rust_end_short_backtrace
  48:        0x12515f221 - rustc_borrowck[4bda8550cd926c82]::mir_borrowck
  49:        0x125554aa9 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_borrowck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  50:        0x12557933d - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_borrowck::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalDefId)>>::call_once
  51:        0x1256a43e9 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  52:        0x12595a034 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  53:        0x1255f62c3 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::mir_borrowck::get_query_non_incr::__rust_end_short_backtrace
  54:        0x124435ce7 - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::VecCache<rustc_span[307fc47b90714165]::def_id::LocalDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  55:        0x1244366ee - rustc_hir_analysis[96041911c6860bb9]::collect::type_of::opaque::find_opaque_ty_constraints_for_rpit
  56:        0x1245b72d3 - rustc_hir_analysis[96041911c6860bb9]::collect::type_of::type_of_opaque
  57:        0x125558cee - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of_opaque::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  58:        0x1258429a0 - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of_opaque::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::DefId)>>::call_once
  59:        0x1256a2e8d - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  60:        0x125910a7c - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  61:        0x1255ee453 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of_opaque::get_query_non_incr::__rust_end_short_backtrace
  62:        0x1245b453f - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  63:        0x1245b5668 - rustc_hir_analysis[96041911c6860bb9]::collect::type_of::type_of
  64:        0x1255760bb - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  65:        0x1257d0b40 - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::DefId)>>::call_once
  66:        0x1256a2e8d - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>
  67:        0x125910a7c - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  68:        0x125820823 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  69:        0x12451f00f - rustc_middle[705d4043bf578f72]::query::plumbing::query_get_at::<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::DefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 8usize]>>>
  70:        0x1245217f1 - rustc_hir_analysis[96041911c6860bb9]::check::check::check_item_type
  71:        0x12452ab6a - rustc_hir_analysis[96041911c6860bb9]::check::check::check_mod_item_types
  72:        0x1255655e9 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::check_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>
  73:        0x1255fceed - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::check_mod_item_types::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, rustc_span[307fc47b90714165]::def_id::LocalModDefId)>>::call_once
  74:        0x1256a2599 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::LocalModDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>
  75:        0x1258fa64f - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::LocalModDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  76:        0x125801894 - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::check_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
  77:        0x1243e3f35 - rustc_middle[705d4043bf578f72]::query::plumbing::query_ensure::<rustc_query_system[6ba621b623e07609]::query::caches::DefaultCache<rustc_span[307fc47b90714165]::def_id::LocalModDefId, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 0usize]>>>
  78:        0x1243e39dd - <rustc_middle[705d4043bf578f72]::hir::map::Map>::for_each_module::<rustc_hir_analysis[96041911c6860bb9]::check_crate::{closure#5}::{closure#0}>
  79:        0x124493cbd - <rustc_session[83cc26ce73b1982b]::session::Session>::time::<(), rustc_hir_analysis[96041911c6860bb9]::check_crate::{closure#5}>
  80:        0x1243db682 - rustc_hir_analysis[96041911c6860bb9]::check_crate
  81:        0x1214f3cce - rustc_interface[b2b6b70544aa9d1]::passes::analysis
  82:        0x125576287 - rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 1usize]>>
  83:        0x125774caa - <rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::analysis::dynamic_query::{closure#2} as core[141871ccc4260175]::ops::function::FnOnce<(rustc_middle[705d4043bf578f72]::ty::context::TyCtxt, ())>>::call_once
  84:        0x1256a088f - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<rustc_query_system[6ba621b623e07609]::query::plumbing::execute_job_non_incr<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::SingleCache<rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 1usize]>>::{closure#0}, rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 1usize]>>
  85:        0x1258c5704 - rustc_query_system[6ba621b623e07609]::query::plumbing::try_execute_query::<rustc_query_impl[66bd3ce17fc8e1a5]::DynamicConfig<rustc_query_system[6ba621b623e07609]::query::caches::SingleCache<rustc_middle[705d4043bf578f72]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[66bd3ce17fc8e1a5]::plumbing::QueryCtxt, false>
  86:        0x12570ddab - rustc_query_impl[66bd3ce17fc8e1a5]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  87:        0x12133c391 - <std[44644296588160fc]::thread::local::LocalKey<core[141871ccc4260175]::cell::Cell<*const ()>>>::with::<rustc_middle[705d4043bf578f72]::ty::context::tls::enter_context<<rustc_middle[705d4043bf578f72]::ty::context::GlobalCtxt>::enter<rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}::{closure#2}::{closure#6}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>
  88:        0x12130eb0b - <rustc_middle[705d4043bf578f72]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}::{closure#2}::{closure#6}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>
  89:        0x12131a123 - <rustc_interface[b2b6b70544aa9d1]::interface::Compiler>::enter::<rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}::{closure#2}, core[141871ccc4260175]::result::Result<core[141871ccc4260175]::option::Option<rustc_interface[b2b6b70544aa9d1]::queries::Linker>, rustc_span[307fc47b90714165]::ErrorGuaranteed>>
  90:        0x1213960bc - rustc_span[307fc47b90714165]::set_source_map::<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  91:        0x1213282a5 - <scoped_tls[611145ce71675172]::ScopedKey<rustc_span[307fc47b90714165]::SessionGlobals>>::set::<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_pool_with_globals<rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>
  92:        0x121396b51 - rustc_span[307fc47b90714165]::create_session_globals_then::<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_pool_with_globals<rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}>
  93:        0x121327585 - std[44644296588160fc]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_with_globals<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_pool_with_globals<rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>
  94:        0x121338070 - std[44644296588160fc]::panicking::try::<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, core[141871ccc4260175]::panic::unwind_safe::AssertUnwindSafe<<std[44644296588160fc]::thread::Builder>::spawn_unchecked_<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_with_globals<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_pool_with_globals<rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  95:        0x1212f7d3e - <<std[44644296588160fc]::thread::Builder>::spawn_unchecked_<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_with_globals<rustc_interface[b2b6b70544aa9d1]::util::run_in_thread_pool_with_globals<rustc_interface[b2b6b70544aa9d1]::interface::run_compiler<core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>, rustc_driver_impl[620352f41765b051]::run_compiler::{closure#1}>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[141871ccc4260175]::result::Result<(), rustc_span[307fc47b90714165]::ErrorGuaranteed>>::{closure#1} as core[141871ccc4260175]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  96:        0x10e31250d - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h62100a6d16b121b3
  97:        0x10e31c37f - std::sys::unix::thread::Thread::new::thread_start::h990ef5ebf967521b
  98:     0x7ff81e7c04e1 - __pthread_start

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: please attach the file at `/Users/jruderman/code/tt/rustc-ice-2023-11-13T15_01_15-61509.txt` to your bug report

query stack during panic:
#0 [mir_built] building MIR for `foo::{closure#0}`
#1 [unsafety_check_result] unsafety-checking `foo::{closure#0}`
#2 [unsafety_check_result] unsafety-checking `foo`
#3 [mir_const] preparing `foo` for borrow checking
#4 [mir_promoted] promoting constants in MIR for `foo`
#5 [mir_borrowck] borrow-checking `foo`
#6 [type_of_opaque] computing type of opaque `foo::{opaque#0}`
#7 [type_of] computing type of `foo::{opaque#0}`
#8 [check_mod_item_types] checking item types in top-level module
#9 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error

For more information about this error, try `rustc --explain E0425`.

Version

stage1 built from 891c6ee on x86_64-apple-darwin

@rustbot label +F-asm +requires-debug-assertions

[jruderman]

Also ICEs with sym in place of const.

[Amanieu]

Seems to be fixed on the latest nightly.

[matthiaskrgr]

nightly

you're probably missing debug assertions?