ICE: no entry found for key

[matthiaskrgr]

Code

#![feature(non_lifetime_binders)]
#![crate_type = "lib"]

fn b() where for<const C: usize> [(); C]: Copy {}

Meta

rustc --version --verbose:

rustc 1.69.0-nightly (9aa5c24b7 2023-02-17)
binary: rustc
commit-hash: 9aa5c24b7d763fb98d998819571128ff2eb8a3ca
commit-date: 2023-02-17
host: x86_64-unknown-linux-gnu
release: 1.69.0-nightly
LLVM version: 15.0.7

Error output

<output>

Backtrace

thread 'rustc' panicked at 'no entry found for key', compiler/rustc_mir_build/src/thir/cx/expr.rs:860:29
stack backtrace:
   0:     0x7fa41656aa5a - std::backtrace_rs::backtrace::libunwind::trace::hf4a48a91b677bc8d
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fa41656aa5a - std::backtrace_rs::backtrace::trace_unsynchronized::h52302266f2c9e2af
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fa41656aa5a - std::sys_common::backtrace::_print_fmt::h00aaca457620efb0
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fa41656aa5a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6d9f10455e422cbd
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fa4165ca9ae - core::fmt::write::h065585aa0e682316
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/core/src/fmt/mod.rs:1232:17
   5:     0x7fa41655ae05 - std::io::Write::write_fmt::h54937c0abd9a719d
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/io/mod.rs:1684:15
   6:     0x7fa41656a825 - std::sys_common::backtrace::_print::h0141838be2b7fc59
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fa41656a825 - std::sys_common::backtrace::print::h422705047959e0cf
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fa41656d59f - std::panicking::default_hook::{{closure}}::h04c227824228bc2c
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/panicking.rs:267:22
   9:     0x7fa41656d2db - std::panicking::default_hook::h1a17cdb165515d8b
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/panicking.rs:286:9
  10:     0x7fa419860224 - rustc_driver_impl[9b756e32c0d38789]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7fa41656dddd - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7593a5eec671dafe
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/alloc/src/boxed.rs:2002:9
  12:     0x7fa41656dddd - std::panicking::rust_panic_with_hook::h815681ed9ae37db1
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/panicking.rs:692:13
  13:     0x7fa41656db59 - std::panicking::begin_panic_handler::{{closure}}::h2a0c3307e4bad14b
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/panicking.rs:579:13
  14:     0x7fa41656aec6 - std::sys_common::backtrace::__rust_end_short_backtrace::hb59a12f53d5a254d
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys_common/backtrace.rs:137:18
  15:     0x7fa41656d862 - rust_begin_unwind
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/panicking.rs:575:5
  16:     0x7fa4165c7353 - core::panicking::panic_fmt::hd1ca061751c01e2a
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/core/src/panicking.rs:64:14
  17:     0x7fa4165c74c1 - core::panicking::panic_display::hb29a61954b939aa3
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/core/src/panicking.rs:147:5
  18:     0x7fa4165c746b - core::panicking::panic_str::he78389bc6afd258a
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/core/src/panicking.rs:131:5
  19:     0x7fa4165c70d6 - core::option::expect_failed::h6663a19166a285ca
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/core/src/option.rs:1926:5
  20:     0x7fa417ce81ea - <rustc_mir_build[f41718743f8b2dbe]::thir::cx::Cx>::mirror_expr_inner
  21:     0x7fa41886b3c8 - rustc_mir_build[f41718743f8b2dbe]::thir::cx::thir_body
  22:     0x7fa4188646fa - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::thir_body, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  23:     0x7fa41885e302 - rustc_mir_build[f41718743f8b2dbe]::build::mir_built
  24:     0x7fa41863747d - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::mir_built, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  25:     0x7fa4189e87e5 - rustc_mir_transform[8987dcc9c024fcae]::check_unsafety::unsafety_check_result
  26:     0x7fa41891c8cb - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::unsafety_check_result, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  27:     0x7fa4189195ee - rustc_mir_transform[8987dcc9c024fcae]::mir_const
  28:     0x7fa418917ff9 - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::mir_const, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  29:     0x7fa418917c32 - <rustc_query_impl[a3402ef8368c6710]::Queries as rustc_middle[b5631d71f72482ee]::ty::query::QueryEngine>::mir_const
  30:     0x7fa41873ec8d - <rustc_mir_transform[8987dcc9c024fcae]::provide::{closure#0} as core[d0f7fc72c0be1fb4]::ops::function::FnOnce<(rustc_middle[b5631d71f72482ee]::ty::context::TyCtxt, rustc_span[65551fbbac8b0f76]::def_id::DefId)>>::call_once
  31:     0x7fa41873dcf0 - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::mir_const_qualif, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  32:     0x7fa41873aef6 - rustc_mir_transform[8987dcc9c024fcae]::mir_promoted
  33:     0x7fa418739708 - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::mir_promoted, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  34:     0x7fa418737f64 - rustc_borrowck[2bd7762540f7a794]::mir_borrowck
  35:     0x7fa4181bfb6b - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::mir_borrowck, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  36:     0x7fa417cfb95b - rustc_data_structures[6722e53fadb3415d]::sync::par_for_each_in::<&[rustc_span[65551fbbac8b0f76]::def_id::LocalDefId], <rustc_middle[b5631d71f72482ee]::hir::map::Map>::par_body_owners<rustc_interface[828b714f964ce1da]::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
  37:     0x7fa417cfb60e - <rustc_session[1c603fdce436292a]::session::Session>::time::<(), rustc_interface[828b714f964ce1da]::passes::analysis::{closure#2}>
  38:     0x7fa417cfadb0 - rustc_interface[828b714f964ce1da]::passes::analysis
  39:     0x7fa41904d4f2 - rustc_query_system[2b3be6912aef78d5]::query::plumbing::try_execute_query::<rustc_query_impl[a3402ef8368c6710]::queries::analysis, rustc_query_impl[a3402ef8368c6710]::plumbing::QueryCtxt>
  40:     0x7fa4192550fa - <rustc_query_impl[a3402ef8368c6710]::Queries as rustc_middle[b5631d71f72482ee]::ty::query::QueryEngine>::analysis
  41:     0x7fa418a75a23 - <rustc_interface[828b714f964ce1da]::queries::QueryResult<&rustc_middle[b5631d71f72482ee]::ty::context::GlobalCtxt>>::enter::<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}::{closure#2}::{closure#3}>
  42:     0x7fa418a74bf4 - <rustc_interface[828b714f964ce1da]::interface::Compiler>::enter::<rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}::{closure#2}, core[d0f7fc72c0be1fb4]::result::Result<core[d0f7fc72c0be1fb4]::option::Option<rustc_interface[828b714f964ce1da]::queries::Linker>, rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>
  43:     0x7fa418a6fe14 - rustc_span[65551fbbac8b0f76]::with_source_map::<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_interface[828b714f964ce1da]::interface::run_compiler<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  44:     0x7fa418a6f924 - <scoped_tls[18b6b4dd1216e2e8]::ScopedKey<rustc_span[65551fbbac8b0f76]::SessionGlobals>>::set::<rustc_interface[828b714f964ce1da]::interface::run_compiler<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}>::{closure#0}, core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>
  45:     0x7fa418a6f022 - std[92d2792449a90a80]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[828b714f964ce1da]::util::run_in_thread_pool_with_globals<rustc_interface[828b714f964ce1da]::interface::run_compiler<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}>::{closure#0}, core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>
  46:     0x7fa418a6edcc - <<std[92d2792449a90a80]::thread::Builder>::spawn_unchecked_<rustc_interface[828b714f964ce1da]::util::run_in_thread_pool_with_globals<rustc_interface[828b714f964ce1da]::interface::run_compiler<core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>, rustc_driver_impl[9b756e32c0d38789]::run_compiler::{closure#1}>::{closure#0}, core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d0f7fc72c0be1fb4]::result::Result<(), rustc_errors[c2c7aee1e156d1f6]::ErrorGuaranteed>>::{closure#1} as core[d0f7fc72c0be1fb4]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fa416577c63 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h24b1cedbd344db9f
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/alloc/src/boxed.rs:1988:9
  48:     0x7fa416577c63 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hb7ac28b0dfacf269
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/alloc/src/boxed.rs:1988:9
  49:     0x7fa416577c63 - std::sys::unix::thread::Thread::new::thread_start::h67c8d237baa6ad51
                               at /rustc/9aa5c24b7d763fb98d998819571128ff2eb8a3ca/library/std/src/sys/unix/thread.rs:108:17
  50:     0x7fa416307bb5 - <unknown>
  51:     0x7fa416389d90 - <unknown>
  52:                0x0 - <unknown>

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: rustc 1.69.0-nightly (9aa5c24b7 2023-02-17) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [thir_body] building THIR for `b::{constant#0}`
#1 [mir_built] building MIR for `b::{constant#0}`
#2 [unsafety_check_result] unsafety-checking `b::{constant#0}`
#3 [mir_const] preparing `b::{constant#0}` for borrow checking
#4 [mir_const_qualif] const checking `b::{constant#0}`
#5 [mir_promoted] processing MIR for `b::{constant#0}`
#6 [mir_borrowck] borrow-checking `b::{constant#0}`
#7 [analysis] running analysis passes on this crate
end of query stack
warning: 1 warning emitted

[bvanjoi]

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