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ICE: generic_const_exprs: ConstEvaluatable has escaping bound vars, so it cannot be wrapped in a dummy binder. #105689

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matthiaskrgr opened this issue Dec 14, 2022 · 2 comments · Fixed by #105694
Closed

ICE: generic_const_exprs: ConstEvaluatable has escaping bound vars, so it cannot be wrapped in a dummy binder. #105689

matthiaskrgr opened this issue Dec 14, 2022 · 2 comments · Fixed by #105694
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@ouz-a
Labels
C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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matthiaskrgr commented Dec 14, 2022 •
edited by rustbot
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Code

// check-pass
// edition:2018

#[allow(unused)]
async fn foo<'a>() {
    let _data = &mut [0u8; { 1 + 4 }];
    bar().await
}

async fn bar() {}

fn main() {}

Meta

rustc --version --verbose:

rustc 1.68.0-nightly (0f529f0f4 2022-12-13)
binary: rustc
commit-hash: 0f529f0f49f4dd404b78e605398531c96f220fc5
commit-date: 2022-12-13
host: x86_64-unknown-linux-gnu
release: 1.68.0-nightly
LLVM version: 15.0.6

Error output

rustc 79/79f1a47c3c1ced9796131aa4eb9461c27474f30c.rs "-Zcrate-attr=feature(generic_const_exprs)" --edition=2021

<output>
Backtrace 

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> <crate attribute>:1:9
  |
1 | feature(generic_const_exprs)
  |         ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
  = note: `#[warn(incomplete_features)]` on by default

thread '<unnamed>' panicked at '`ConstEvaluatable(Const { ty: usize, kind: Unevaluated(UnevaluatedConst { def: WithOptConstParam { did: DefId(0:6 ~ 79f1a47c3c1ced9796131aa4eb9461c27474f30c[40fc]::foo::{closure#0}::{constant#0}), const_param_did: None }, substs: [ReLateBound(DebruijnIndex(0), BoundRegion { var: 2, kind: BrAnon(2, Some(79/79f1a47c3c1ced9796131aa4eb9461c27474f30c.rs:5:14: 5:16 (#0))) })] }) })` has escaping bound vars, so it cannot be wrapped in a dummy binder.', compiler/rustc_trait_selection/src/traits/wf.rs:458:33
stack backtrace:
   0:     0x7f742e9667da - std::backtrace_rs::backtrace::libunwind::trace::h7785c191eb7ee216
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f742e9667da - std::backtrace_rs::backtrace::trace_unsynchronized::hf351b38b6771dec4
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f742e9667da - std::sys_common::backtrace::_print_fmt::h713ede78758becef
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f742e9667da - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1878899793c73488
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f742e9c92ee - core::fmt::write::h13bbbc03afcba1c1
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/fmt/mod.rs:1208:17
   5:     0x7f742e956c65 - std::io::Write::write_fmt::hfb2ca3e9f8803080
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/io/mod.rs:1682:15
   6:     0x7f742e9665a5 - std::sys_common::backtrace::_print::hd117bfadcc3f249e
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f742e9665a5 - std::sys_common::backtrace::print::h7e9c04ba80eb0074
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f742e9692ef - std::panicking::default_hook::{{closure}}::hb29d3d4cad77f77b
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:267:22
   9:     0x7f742e96902b - std::panicking::default_hook::hb9cd54f32e45cbdf
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:286:9
  10:     0x7f742e969b0c - std::panicking::rust_panic_with_hook::heec3062a77321665
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:688:13
  11:     0x7f742e9698a9 - std::panicking::begin_panic_handler::{{closure}}::hc198257d983dd2f7
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:579:13
  12:     0x7f742e966c8c - std::sys_common::backtrace::__rust_end_short_backtrace::he3b3e3efc14f5ea5
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7f742e9695b2 - rust_begin_unwind
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:575:5
  14:     0x7f742e9c5cd3 - core::panicking::panic_fmt::h56031442da36123d
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/panicking.rs:64:14
  15:     0x7f742ffab729 - <rustc_middle[fb11b19bba64d848]::ty::sty::Binder<rustc_middle[fb11b19bba64d848]::ty::PredicateKind>>::dummy
  16:     0x7f7430230712 - <rustc_trait_selection[1e153bf3b090dfe7]::traits::wf::WfPredicates>::compute
  17:     0x7f742ff1502f - <rustc_trait_selection[1e153bf3b090dfe7]::traits::fulfill::FulfillProcessor as rustc_data_structures[27389a654890db55]::obligation_forest::ObligationProcessor>::process_obligation
  18:     0x7f742ff1242e - <rustc_data_structures[27389a654890db55]::obligation_forest::ObligationForest<rustc_trait_selection[1e153bf3b090dfe7]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[1e153bf3b090dfe7]::traits::fulfill::FulfillProcessor>
  19:     0x7f742fd06690 - <rustc_trait_selection[1e153bf3b090dfe7]::traits::fulfill::FulfillmentContext as rustc_infer[436d8bad8048b04b]::traits::engine::TraitEngine>::select_all_or_error
  20:     0x7f742ffd9377 - <rustc_hir_typeck[bcca6203b1ef6d01]::inherited::InheritedBuilder>::enter::<rustc_hir_typeck[bcca6203b1ef6d01]::typeck_with_fallback<rustc_hir_typeck[bcca6203b1ef6d01]::typeck::{closure#0}>::{closure#0}::{closure#1}, &rustc_middle[fb11b19bba64d848]::ty::context::TypeckResults>
  21:     0x7f742ffcc041 - rustc_hir_typeck[bcca6203b1ef6d01]::typeck
  22:     0x7f742ffca324 - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::VecCache<rustc_span[22b27358efe64712]::def_id::LocalDefId, &rustc_middle[fb11b19bba64d848]::ty::context::TypeckResults>>
  23:     0x7f74315ee9dc - <rustc_query_impl[f9ce7d291822ba8c]::Queries as rustc_middle[fb11b19bba64d848]::ty::query::QueryEngine>::typeck
  24:     0x7f74306c2629 - rustc_mir_build[465e1e7760d886e7]::thir::cx::thir_body
  25:     0x7f7430cd10ba - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::DefaultCache<rustc_middle[fb11b19bba64d848]::ty::WithOptConstParam<rustc_span[22b27358efe64712]::def_id::LocalDefId>, core[454b920cfc772497]::result::Result<(&rustc_data_structures[27389a654890db55]::steal::Steal<rustc_middle[fb11b19bba64d848]::thir::Thir>, rustc_middle[fb11b19bba64d848]::thir::ExprId), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>>
  26:     0x7f7430cc99de - rustc_mir_build[465e1e7760d886e7]::build::mir_built
  27:     0x7f743058d9ba - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::DefaultCache<rustc_middle[fb11b19bba64d848]::ty::WithOptConstParam<rustc_span[22b27358efe64712]::def_id::LocalDefId>, &rustc_data_structures[27389a654890db55]::steal::Steal<rustc_middle[fb11b19bba64d848]::mir::Body>>>
  28:     0x7f7430598684 - rustc_mir_transform[a30e9448cdbece04]::check_unsafety::unsafety_check_result
  29:     0x7f74305937fe - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::VecCache<rustc_span[22b27358efe64712]::def_id::LocalDefId, &rustc_middle[fb11b19bba64d848]::mir::query::UnsafetyCheckResult>>
  30:     0x7f7430590174 - rustc_mir_transform[a30e9448cdbece04]::mir_const
  31:     0x7f743058dcf0 - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::DefaultCache<rustc_middle[fb11b19bba64d848]::ty::WithOptConstParam<rustc_span[22b27358efe64712]::def_id::LocalDefId>, &rustc_data_structures[27389a654890db55]::steal::Steal<rustc_middle[fb11b19bba64d848]::mir::Body>>>
  32:     0x7f7430bad3de - rustc_mir_transform[a30e9448cdbece04]::mir_promoted
  33:     0x7f7430997c1e - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::DefaultCache<rustc_middle[fb11b19bba64d848]::ty::WithOptConstParam<rustc_span[22b27358efe64712]::def_id::LocalDefId>, (&rustc_data_structures[27389a654890db55]::steal::Steal<rustc_middle[fb11b19bba64d848]::mir::Body>, &rustc_data_structures[27389a654890db55]::steal::Steal<rustc_index[27d71b2669183e7d]::vec::IndexVec<rustc_middle[fb11b19bba64d848]::mir::Promoted, rustc_middle[fb11b19bba64d848]::mir::Body>>)>>
  34:     0x7f743099648f - rustc_borrowck[321066d147c467a7]::mir_borrowck
  35:     0x7f7430bdbb5e - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::VecCache<rustc_span[22b27358efe64712]::def_id::LocalDefId, &rustc_middle[fb11b19bba64d848]::mir::query::BorrowCheckResult>>
  36:     0x7f74315eedaa - <rustc_query_impl[f9ce7d291822ba8c]::Queries as rustc_middle[fb11b19bba64d848]::ty::query::QueryEngine>::mir_borrowck
  37:     0x7f7431447073 - rustc_hir_analysis[423524a2adbac610]::collect::type_of::type_of
  38:     0x7f74305467d7 - rustc_query_system[d35528287009336b]::query::plumbing::get_query::<rustc_query_impl[f9ce7d291822ba8c]::queries::type_of, rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt>
  39:     0x7f7430da78bc - rustc_hir_analysis[423524a2adbac610]::check::check::check_mod_item_types
  40:     0x7f74307a7d1d - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::VecCache<rustc_span[22b27358efe64712]::def_id::LocalDefId, ()>>
  41:     0x7f743103b443 - rustc_query_system[d35528287009336b]::query::plumbing::get_query::<rustc_query_impl[f9ce7d291822ba8c]::queries::check_mod_item_types, rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt>
  42:     0x7f74312e7d55 - <rustc_middle[fb11b19bba64d848]::hir::map::Map>::for_each_module::<rustc_hir_analysis[423524a2adbac610]::check_crate::{closure#6}::{closure#0}>
  43:     0x7f74301c8272 - rustc_hir_analysis[423524a2adbac610]::check_crate
  44:     0x7f74301c7ebb - rustc_interface[5feaddc0f04e2ee8]::passes::analysis
  45:     0x7f7431409727 - rustc_query_system[d35528287009336b]::query::plumbing::try_execute_query::<rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt, rustc_query_system[d35528287009336b]::query::caches::DefaultCache<(), core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>>
  46:     0x7f7431409420 - rustc_query_system[d35528287009336b]::query::plumbing::get_query::<rustc_query_impl[f9ce7d291822ba8c]::queries::analysis, rustc_query_impl[f9ce7d291822ba8c]::plumbing::QueryCtxt>
  47:     0x7f7430e231f3 - <rustc_interface[5feaddc0f04e2ee8]::passes::QueryContext>::enter::<rustc_driver[a18c018241618262]::run_compiler::{closure#1}::{closure#2}::{closure#2}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  48:     0x7f7430e1f5a3 - <rustc_interface[5feaddc0f04e2ee8]::interface::Compiler>::enter::<rustc_driver[a18c018241618262]::run_compiler::{closure#1}::{closure#2}, core[454b920cfc772497]::result::Result<core[454b920cfc772497]::option::Option<rustc_interface[5feaddc0f04e2ee8]::queries::Linker>, rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  49:     0x7f7430e1a608 - rustc_span[22b27358efe64712]::with_source_map::<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  50:     0x7f7430e1a0f5 - <scoped_tls[a9410c74fe979615]::ScopedKey<rustc_span[22b27358efe64712]::SessionGlobals>>::set::<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  51:     0x7f7430e196e2 - std[e2221f2923982408]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  52:     0x7f7431500e6e - <<std[e2221f2923982408]::thread::Builder>::spawn_unchecked_<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#1} as core[454b920cfc772497]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  53:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd5e0dcf36c8eb2ec
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  54:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5249b73c8953b95a
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  55:     0x7f7432a10043 - std::sys::unix::thread::Thread::new::thread_start::h680046a940e18e85
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys/unix/thread.rs:108:17
  56:     0x7f742e7068fd - <unknown>
  57:     0x7f742e788a60 - <unknown>
  58:                0x0 - <unknown>
warning: 1 warning emitted

error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: VecMap([(OpaqueTypeKey { def_id: DefId(0:10 ~ 79f1a47c3c1ced9796131aa4eb9461c27474f30c[40fc]::foo::{opaque#0}), substs: [ReEarlyBound(0, 'a), ReEarlyBound(0, 'a)] }, OpaqueTypeDecl { hidden_type: OpaqueHiddenType { span: 79/79f1a47c3c1ced9796131aa4eb9461c27474f30c.rs:5:20: 5:20 (#9), ty: _ }, origin: AsyncFn(DefId(0:3 ~ 79f1a47c3c1ced9796131aa4eb9461c27474f30c[40fc]::foo)) })])
  |
  = note: delayed at compiler/rustc_infer/src/infer/opaque_types/table.rs:50:26

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1610:13
stack backtrace:
   0:     0x7f7432a0638a - std::backtrace_rs::backtrace::libunwind::trace::h7785c191eb7ee216
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f7432a0638a - std::backtrace_rs::backtrace::trace_unsynchronized::hf351b38b6771dec4
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f7432a0638a - std::sys_common::backtrace::_print_fmt::h713ede78758becef
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f7432a0638a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1878899793c73488
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f742e9c92ee - core::fmt::write::h13bbbc03afcba1c1
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/fmt/mod.rs:1208:17
   5:     0x7f74329fa555 - std::io::Write::write_fmt::hfb2ca3e9f8803080
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/io/mod.rs:1682:15
   6:     0x7f7432a06155 - std::sys_common::backtrace::_print::hd117bfadcc3f249e
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f7432a06155 - std::sys_common::backtrace::print::h7e9c04ba80eb0074
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f7432a084df - std::panicking::default_hook::{{closure}}::hb29d3d4cad77f77b
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:267:22
   9:     0x7f7432a0821b - std::panicking::default_hook::hb9cd54f32e45cbdf
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:286:9
  10:     0x7f7431c3c6f1 - rustc_driver[a18c018241618262]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f7432a08cdd - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7096ae9426bf0ef4
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2032:9
  12:     0x7f7432a08cdd - std::panicking::rust_panic_with_hook::heec3062a77321665
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:692:13
  13:     0x7f7431c754c1 - std[e2221f2923982408]::panicking::begin_panic::<rustc_errors[55c94f74a3e69376]::ExplicitBug>::{closure#0}
  14:     0x7f7431c73d76 - std[e2221f2923982408]::sys_common::backtrace::__rust_end_short_backtrace::<std[e2221f2923982408]::panicking::begin_panic<rustc_errors[55c94f74a3e69376]::ExplicitBug>::{closure#0}, !>
  15:     0x7f7431c52f26 - std[e2221f2923982408]::panicking::begin_panic::<rustc_errors[55c94f74a3e69376]::ExplicitBug>
  16:     0x7f7431c717d6 - std[e2221f2923982408]::panic::panic_any::<rustc_errors[55c94f74a3e69376]::ExplicitBug>
  17:     0x7f74311490a6 - <rustc_errors[55c94f74a3e69376]::HandlerInner>::flush_delayed::<alloc[89c3e70836bb9ff9]::vec::Vec<rustc_errors[55c94f74a3e69376]::diagnostic::Diagnostic>, &str>
  18:     0x7f74311483ab - <rustc_errors[55c94f74a3e69376]::HandlerInner as core[454b920cfc772497]::ops::drop::Drop>::drop
  19:     0x7f7430e2b50e - core[454b920cfc772497]::ptr::drop_in_place::<rustc_session[1886fb585cbb0752]::parse::ParseSess>
  20:     0x7f7430e1b9bf - core[454b920cfc772497]::ptr::drop_in_place::<rustc_session[1886fb585cbb0752]::session::Session>
  21:     0x7f7430e1b6f0 - core[454b920cfc772497]::ptr::drop_in_place::<rustc_interface[5feaddc0f04e2ee8]::interface::Compiler>
  22:     0x7f7430e1aac8 - rustc_span[22b27358efe64712]::with_source_map::<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  23:     0x7f7430e1a0f5 - <scoped_tls[a9410c74fe979615]::ScopedKey<rustc_span[22b27358efe64712]::SessionGlobals>>::set::<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  24:     0x7f7430e196e2 - std[e2221f2923982408]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  25:     0x7f7431500e6e - <<std[e2221f2923982408]::thread::Builder>::spawn_unchecked_<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#1} as core[454b920cfc772497]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  26:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd5e0dcf36c8eb2ec
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  27:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5249b73c8953b95a
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  28:     0x7f7432a10043 - std::sys::unix::thread::Thread::new::thread_start::h680046a940e18e85
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys/unix/thread.rs:108:17
  29:     0x7f742e7068fd - <unknown>
  30:     0x7f742e788a60 - <unknown>
  31:                0x0 - <unknown>

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 1.68.0-nightly (0f529f0f4 2022-12-13) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z crate-attr=feature(generic_const_exprs)

query stack during panic:
end of query stack
thread '<unnamed>' panicked at 'panic in a function that cannot unwind', library/core/src/panicking.rs:87:58
stack backtrace:
   0:     0x7f742e9667da - std::backtrace_rs::backtrace::libunwind::trace::h7785c191eb7ee216
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f742e9667da - std::backtrace_rs::backtrace::trace_unsynchronized::hf351b38b6771dec4
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f742e9667da - std::sys_common::backtrace::_print_fmt::h713ede78758becef
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f742e9667da - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1878899793c73488
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f742e9c92ee - core::fmt::write::h13bbbc03afcba1c1
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/fmt/mod.rs:1208:17
   5:     0x7f742e956c65 - std::io::Write::write_fmt::hfb2ca3e9f8803080
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/io/mod.rs:1682:15
   6:     0x7f742e9665a5 - std::sys_common::backtrace::_print::hd117bfadcc3f249e
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f742e9665a5 - std::sys_common::backtrace::print::h7e9c04ba80eb0074
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f742e9692ef - std::panicking::default_hook::{{closure}}::hb29d3d4cad77f77b
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:267:22
   9:     0x7f742e96902b - std::panicking::default_hook::hb9cd54f32e45cbdf
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:286:9
  10:     0x7f742e969b0c - std::panicking::rust_panic_with_hook::heec3062a77321665
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:688:13
  11:     0x7f742e969862 - std::panicking::begin_panic_handler::{{closure}}::hc198257d983dd2f7
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:577:13
  12:     0x7f742e966c8c - std::sys_common::backtrace::__rust_end_short_backtrace::he3b3e3efc14f5ea5
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7f742e9695b2 - rust_begin_unwind
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/panicking.rs:575:5
  14:     0x7f742e9c5d53 - core::panicking::panic_str_nounwind::h4573a204d9895764
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/panicking.rs:90:14
  15:     0x7f742e9c5ec3 - core::panicking::panic_no_unwind::hb01b1602c8c66cfa
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/core/src/panicking.rs:159:5
  16:     0x7f7430e1aadf - rustc_span[22b27358efe64712]::with_source_map::<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  17:     0x7f7430e1a0f5 - <scoped_tls[a9410c74fe979615]::ScopedKey<rustc_span[22b27358efe64712]::SessionGlobals>>::set::<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  18:     0x7f7430e196e2 - std[e2221f2923982408]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>
  19:     0x7f7431500e6e - <<std[e2221f2923982408]::thread::Builder>::spawn_unchecked_<rustc_interface[5feaddc0f04e2ee8]::util::run_in_thread_pool_with_globals<rustc_interface[5feaddc0f04e2ee8]::interface::run_compiler<core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>, rustc_driver[a18c018241618262]::run_compiler::{closure#1}>::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[454b920cfc772497]::result::Result<(), rustc_errors[55c94f74a3e69376]::ErrorGuaranteed>>::{closure#1} as core[454b920cfc772497]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  20:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd5e0dcf36c8eb2ec
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  21:     0x7f7432a10043 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5249b73c8953b95a
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/alloc/src/boxed.rs:2000:9
  22:     0x7f7432a10043 - std::sys::unix::thread::Thread::new::thread_start::h680046a940e18e85
                               at /rustc/0f529f0f49f4dd404b78e605398531c96f220fc5/library/std/src/sys/unix/thread.rs:108:17
  23:     0x7f742e7068fd - <unknown>
  24:     0x7f742e788a60 - <unknown>
  25:                0x0 - <unknown>
thread panicked while panicking. aborting.
[1]    3664576 IOT instruction (core dumped)  rustc 79/79f1a47c3c1ced9796131aa4eb9461c27474f30c.rs  --edition=2021

@matthiaskrgr matthiaskrgr added 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. C-bug Category: This is a bug. requires-nightly This issue requires a nightly compiler in some way. F-generic_const_exprs `#![feature(generic_const_exprs)]` labels Dec 14, 2022
@Nilstrieb
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Can you add the #![feature] to the code example instead to make it more easily runnable in the future?

@ouz-a
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ouz-a commented Dec 14, 2022

@rustbot claim

@ouz-a ouz-a mentioned this issue Dec 14, 2022
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@bors bors closed this as completed in 24e584b Dec 16, 2022
@BoxyUwU BoxyUwU mentioned this issue Apr 29, 2023
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@ouz-a ouz-a

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C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Don't create dummy if val has escaping bounds var ouz-a/rust
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@matthiaskrgr @Nilstrieb @ouz-a