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ICE involving type inference during check_transmute #104609

Closed
jruderman opened this issue Nov 19, 2022 · 3 comments · Fixed by #104657
Closed

ICE involving type inference during check_transmute #104609

jruderman opened this issue Nov 19, 2022 · 3 comments · Fixed by #104657
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@Rustin170506
Labels
C-bug Category: This is a bug. E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. 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.

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@jruderman
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jruderman commented Nov 19, 2022 •
edited by rustbot
Loading

Found with a modified fuzz-rustc

Code

fn foo() {
    oops;
}

unsafe fn bar() {
    std::mem::transmute::<_, *mut _>(1_u8);
}

fn main() {}

ICE (nightly)

thread '<unnamed>' panicked at 'index out of bounds: the len is 0 but the index is 1', /cargo/registry/src/github.com-1ecc6299db9ec823/ena-0.14.0/src/snapshot_vec.rs:199:10
Backtrace 
stack backtrace:
   0:     0x7f4b8f17c680 - std::backtrace_rs::backtrace::libunwind::trace::h883fd4f06d218f51
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f4b8f17c680 - std::backtrace_rs::backtrace::trace_unsynchronized::h360e691b6ffad077
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f4b8f17c680 - std::sys_common::backtrace::_print_fmt::ha1c779fad25181af
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f4b8f17c680 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h2e9f7b10fee83896
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f4b8f1deaae - core::fmt::write::h11cb677d8e31009e
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/core/src/fmt/mod.rs:1208:17
   5:     0x7f4b8f16ca05 - std::io::Write::write_fmt::h7caf3bcc9b98ddd9
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/io/mod.rs:1682:15
   6:     0x7f4b8f17c445 - std::sys_common::backtrace::_print::h12f07ee7fcfa0859
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f4b8f17c445 - std::sys_common::backtrace::print::h2b4d3c0f5aec5af4
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f4b8f17f14f - std::panicking::default_hook::{{closure}}::h1a322f0a2f0b22e8
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/panicking.rs:267:22
   9:     0x7f4b8f17ee8a - std::panicking::default_hook::he416aa9279d946a5
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/panicking.rs:286:9
  10:     0x7f4b8f17f95c - std::panicking::rust_panic_with_hook::hd7bed3f5cabcbca4
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/panicking.rs:688:13
  11:     0x7f4b8f17f6f7 - std::panicking::begin_panic_handler::{{closure}}::hb655088b25021774
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/panicking.rs:579:13
  12:     0x7f4b8f17cb2c - std::sys_common::backtrace::__rust_end_short_backtrace::h63aadde97bff9df8
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7f4b8f17f412 - rust_begin_unwind
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/panicking.rs:575:5
  14:     0x7f4b8f1db483 - core::panicking::panic_fmt::h8c423b58a616c0fb
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/core/src/panicking.rs:65:14
  15:     0x7f4b8f1db652 - core::panicking::panic_bounds_check::h279a0a53083fb5a3
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/core/src/panicking.rs:150:5
  16:     0x7f4b903cc985 - <rustc_infer[2a31fe5b802fb9ca]::infer::canonical::canonicalizer::Canonicalizer as rustc_middle[a517d4798108a427]::ty::fold::TypeFolder>::fold_ty
  17:     0x7f4b90a7a74a - <rustc_infer[2a31fe5b802fb9ca]::infer::canonical::canonicalizer::Canonicalizer as rustc_middle[a517d4798108a427]::ty::fold::FallibleTypeFolder>::try_fold_predicate
  18:     0x7f4b90c79d0d - <rustc_infer[2a31fe5b802fb9ca]::infer::InferCtxt as rustc_trait_selection[b5c769cc9dfe78e8]::traits::query::evaluate_obligation::InferCtxtExt>::predicate_must_hold_modulo_regions
  19:     0x7f4b90c795a8 - rustc_trait_selection[b5c769cc9dfe78e8]::traits::type_known_to_meet_bound_modulo_regions
  20:     0x7f4b90c792dd - rustc_ty_utils[6268eb371cbf5bb1]::common_traits::is_sized_raw
  21:     0x7f4b90b48d0d - rustc_query_system[6f5b46e8647c6066]::query::plumbing::try_execute_query::<rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt, rustc_query_system[6f5b46e8647c6066]::query::caches::DefaultCache<rustc_middle[a517d4798108a427]::ty::ParamEnvAnd<rustc_middle[a517d4798108a427]::ty::Ty>, bool>>
  22:     0x7f4b90b45212 - <rustc_middle[a517d4798108a427]::ty::Ty>::is_sized
  23:     0x7f4b90b39435 - rustc_ty_utils[6268eb371cbf5bb1]::layout::layout_of_uncached
  24:     0x7f4b90d86bd6 - rustc_query_system[6f5b46e8647c6066]::query::plumbing::get_query::<rustc_query_impl[ccdef58dc88cdef9]::queries::layout_of, rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt>
  25:     0x7f4b90d86673 - <rustc_query_impl[ccdef58dc88cdef9]::Queries as rustc_middle[a517d4798108a427]::ty::query::QueryEngine>::layout_of
  26:     0x7f4b9124e8c1 - <rustc_middle[a517d4798108a427]::ty::layout::SizeSkeleton>::compute
  27:     0x7f4b918568e7 - <rustc_hir_typeck[55138d0d07b4d7c3]::fn_ctxt::FnCtxt>::check_transmute
  28:     0x7f4b90830528 - <rustc_hir_typeck[55138d0d07b4d7c3]::inherited::InheritedBuilder>::enter::<rustc_hir_typeck[55138d0d07b4d7c3]::typeck_with_fallback<rustc_hir_typeck[55138d0d07b4d7c3]::typeck::{closure#0}>::{closure#0}::{closure#1}, &rustc_middle[a517d4798108a427]::ty::context::TypeckResults>
  29:     0x7f4b9082029b - rustc_hir_typeck[55138d0d07b4d7c3]::typeck
  30:     0x7f4b9081e49f - rustc_query_system[6f5b46e8647c6066]::query::plumbing::try_execute_query::<rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt, rustc_query_system[6f5b46e8647c6066]::query::caches::DefaultCache<rustc_span[b28debf63ec6c805]::def_id::LocalDefId, &rustc_middle[a517d4798108a427]::ty::context::TypeckResults>>
  31:     0x7f4b91b348b8 - rustc_data_structures[f196f90cd7726d0a]::sync::par_for_each_in::<&[rustc_span[b28debf63ec6c805]::def_id::LocalDefId], <rustc_middle[a517d4798108a427]::hir::map::Map>::par_body_owners<rustc_hir_typeck[55138d0d07b4d7c3]::typeck_item_bodies::{closure#0}>::{closure#0}>
  32:     0x7f4b91b34593 - rustc_hir_typeck[55138d0d07b4d7c3]::typeck_item_bodies
  33:     0x7f4b91a22c0a - rustc_query_system[6f5b46e8647c6066]::query::plumbing::try_execute_query::<rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt, rustc_query_system[6f5b46e8647c6066]::query::caches::DefaultCache<(), ()>>
  34:     0x7f4b91a22907 - rustc_query_system[6f5b46e8647c6066]::query::plumbing::get_query::<rustc_query_impl[ccdef58dc88cdef9]::queries::typeck_item_bodies, rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt>
  35:     0x7f4b907f9d5a - <rustc_session[77197df47e8f2df1]::session::Session>::time::<(), rustc_hir_analysis[bbd754e88e2981a3]::check_crate::{closure#7}>
  36:     0x7f4b907f96b2 - rustc_hir_analysis[bbd754e88e2981a3]::check_crate
  37:     0x7f4b907f931b - rustc_interface[f4a938fe0ced1d5a]::passes::analysis
  38:     0x7f4b91b8f5d4 - rustc_query_system[6f5b46e8647c6066]::query::plumbing::try_execute_query::<rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt, rustc_query_system[6f5b46e8647c6066]::query::caches::DefaultCache<(), core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>>
  39:     0x7f4b91b8f2d7 - rustc_query_system[6f5b46e8647c6066]::query::plumbing::get_query::<rustc_query_impl[ccdef58dc88cdef9]::queries::analysis, rustc_query_impl[ccdef58dc88cdef9]::plumbing::QueryCtxt>
  40:     0x7f4b9166261d - <rustc_interface[f4a938fe0ced1d5a]::passes::QueryContext>::enter::<rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>
  41:     0x7f4b9165e85f - <rustc_interface[f4a938fe0ced1d5a]::interface::Compiler>::enter::<rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}::{closure#2}, core[918e54342397e48e]::result::Result<core[918e54342397e48e]::option::Option<rustc_interface[f4a938fe0ced1d5a]::queries::Linker>, rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>
  42:     0x7f4b916598b2 - rustc_span[b28debf63ec6c805]::with_source_map::<core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>, rustc_interface[f4a938fe0ced1d5a]::interface::run_compiler<core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>, rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  43:     0x7f4b916593a9 - <scoped_tls[554912419d9f879]::ScopedKey<rustc_span[b28debf63ec6c805]::SessionGlobals>>::set::<rustc_interface[f4a938fe0ced1d5a]::interface::run_compiler<core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>, rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}>::{closure#0}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>
  44:     0x7f4b916589b8 - std[a6ffccdfacbb7019]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[f4a938fe0ced1d5a]::util::run_in_thread_pool_with_globals<rustc_interface[f4a938fe0ced1d5a]::interface::run_compiler<core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>, rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}>::{closure#0}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>
  45:     0x7f4b916586dc - <<std[a6ffccdfacbb7019]::thread::Builder>::spawn_unchecked_<rustc_interface[f4a938fe0ced1d5a]::util::run_in_thread_pool_with_globals<rustc_interface[f4a938fe0ced1d5a]::interface::run_compiler<core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>, rustc_driver[ce6bec53505e320e]::run_compiler::{closure#1}>::{closure#0}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[918e54342397e48e]::result::Result<(), rustc_errors[dbdd4d57c91bfd67]::ErrorGuaranteed>>::{closure#1} as core[918e54342397e48e]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  46:     0x7f4b930f3593 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1dfdd2e8f0e0d7b2
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/alloc/src/boxed.rs:2000:9
  47:     0x7f4b930f3593 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h559bc1b5e8ebdb2b
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/alloc/src/boxed.rs:2000:9
  48:     0x7f4b930f3593 - std::sys::unix::thread::Thread::new::thread_start::haa4c5ad6f089895d
                               at /rustc/b833ad56f46a0bbe0e8729512812a161e7dae28a/library/std/src/sys/unix/thread.rs:108:17
  49:     0x7f4b8f051609 - start_thread
  50:     0x7f4b8ef74133 - clone
  51:                0x0 - <unknown>

ICE (with debug assertions enabled)

thread 'rustc' panicked at 'assertion failed: !ty.has_non_region_infer()', compiler/rustc_middle/src/ty/layout.rs:266:9
Backtrace 
stack backtrace:
   0:        0x10122cce1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h712c1ccf00a2a2d4
   1:        0x10129ded8 - core::fmt::write::hed31846cddb4e13c
   2:        0x101206548 - std::io::Write::write_fmt::hadfb68a89fce2e45
   3:        0x10122cad2 - std::sys_common::backtrace::print::hf652614139f45056
   4:        0x1011e7e35 - std::panicking::default_hook::{{closure}}::h616f22d699edcfee
   5:        0x1011e7c17 - std::panicking::default_hook::hf8b8756c0884d0f7
   6:        0x10e9f6938 - rustc_driver[2cc99eb9ce8fd4d0]::DEFAULT_HOOK::{closure#0}::{closure#0}
   7:        0x1011e84f6 - std::panicking::rust_panic_with_hook::h8e3a6a45e28bbff2
   8:        0x1011ee592 - std::panicking::begin_panic_handler::{{closure}}::h12b431d0c75da6f0
   9:        0x1011ee508 - std::sys_common::backtrace::__rust_end_short_backtrace::h43ea97d1d7d57e1e
  10:        0x1011e7f08 - _rust_begin_unwind
  11:        0x1012c0ff3 - core::panicking::panic_fmt::h7ec57a9a63e6db71
  12:        0x1012c10c7 - core::panicking::panic::h604eaa4391462ac9
  13:        0x1136dedec - <rustc_middle[ec331f01cef738e8]::ty::layout::SizeSkeleton>::compute
  14:        0x1113a79b1 - <rustc_hir_typeck[a85544c5c906f0]::fn_ctxt::FnCtxt>::check_transmute
  15:        0x111395fab - <rustc_hir_typeck[a85544c5c906f0]::fn_ctxt::FnCtxt>::check_transmutes
  16:        0x11131a685 - <rustc_hir_typeck[a85544c5c906f0]::inherited::InheritedBuilder>::enter::<rustc_hir_typeck[a85544c5c906f0]::typeck_with_fallback<rustc_hir_typeck[a85544c5c906f0]::typeck::{closure#0}>::{closure#0}::{closure#1}, &rustc_middle[ec331f01cef738e8]::ty::context::TypeckResults>
  17:        0x1113158c5 - rustc_hir_typeck[a85544c5c906f0]::typeck_with_fallback::<rustc_hir_typeck[a85544c5c906f0]::typeck::{closure#0}>
  18:        0x111435a99 - rustc_hir_typeck[a85544c5c906f0]::typeck
  19:        0x1125cb021 - rustc_query_system[7c3a95a11108687b]::query::plumbing::try_execute_query::<rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt, rustc_query_system[7c3a95a11108687b]::query::caches::DefaultCache<rustc_span[3eb4c8eecaecace3]::def_id::LocalDefId, &rustc_middle[ec331f01cef738e8]::ty::context::TypeckResults>>
  20:        0x1126f626a - rustc_query_system[7c3a95a11108687b]::query::plumbing::get_query::<rustc_query_impl[4d128e94c6002277]::queries::typeck, rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt>
  21:        0x11288ec9f - <rustc_query_impl[4d128e94c6002277]::Queries as rustc_middle[ec331f01cef738e8]::ty::query::QueryEngine>::typeck
  22:        0x1114112ff - <core[95bb6d661b676f4d]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[a4b7c63b65e5070b]::sync::par_for_each_in<&[rustc_span[3eb4c8eecaecace3]::def_id::LocalDefId], <rustc_middle[ec331f01cef738e8]::hir::map::Map>::par_body_owners<rustc_hir_typeck[a85544c5c906f0]::typeck_item_bodies::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}> as core[95bb6d661b676f4d]::ops::function::FnOnce<()>>::call_once
  23:        0x1112ab449 - std[a294a2425e1eb3e0]::panicking::try::<(), core[95bb6d661b676f4d]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[a4b7c63b65e5070b]::sync::par_for_each_in<&[rustc_span[3eb4c8eecaecace3]::def_id::LocalDefId], <rustc_middle[ec331f01cef738e8]::hir::map::Map>::par_body_owners<rustc_hir_typeck[a85544c5c906f0]::typeck_item_bodies::{closure#0}>::{closure#0}>::{closure#0}::{closure#0}>>
  24:        0x1112b70d3 - rustc_data_structures[a4b7c63b65e5070b]::sync::par_for_each_in::<&[rustc_span[3eb4c8eecaecace3]::def_id::LocalDefId], <rustc_middle[ec331f01cef738e8]::hir::map::Map>::par_body_owners<rustc_hir_typeck[a85544c5c906f0]::typeck_item_bodies::{closure#0}>::{closure#0}>
  25:        0x1114358cf - rustc_hir_typeck[a85544c5c906f0]::typeck_item_bodies
  26:        0x112621745 - rustc_query_system[7c3a95a11108687b]::query::plumbing::try_execute_query::<rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt, rustc_query_system[7c3a95a11108687b]::query::caches::DefaultCache<(), ()>>
  27:        0x1126baec9 - rustc_query_system[7c3a95a11108687b]::query::plumbing::get_query::<rustc_query_impl[4d128e94c6002277]::queries::typeck_item_bodies, rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt>
  28:        0x11288e637 - <rustc_query_impl[4d128e94c6002277]::Queries as rustc_middle[ec331f01cef738e8]::ty::query::QueryEngine>::typeck_item_bodies
  29:        0x11165af38 - <rustc_session[637851e6765f7d04]::session::Session>::time::<(), rustc_hir_analysis[80fe1653d3660e1e]::check_crate::{closure#7}>
  30:        0x1114f55ee - rustc_hir_analysis[80fe1653d3660e1e]::check_crate
  31:        0x10eaee09a - rustc_interface[a117036b955f68d8]::passes::analysis
  32:        0x112615960 - rustc_query_system[7c3a95a11108687b]::query::plumbing::try_execute_query::<rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt, rustc_query_system[7c3a95a11108687b]::query::caches::DefaultCache<(), core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>>
  33:        0x1126f6619 - rustc_query_system[7c3a95a11108687b]::query::plumbing::get_query::<rustc_query_impl[4d128e94c6002277]::queries::analysis, rustc_query_impl[4d128e94c6002277]::plumbing::QueryCtxt>
  34:        0x11286a637 - <rustc_query_impl[4d128e94c6002277]::Queries as rustc_middle[ec331f01cef738e8]::ty::query::QueryEngine>::analysis
  35:        0x10e9f7e08 - <rustc_interface[a117036b955f68d8]::passes::QueryContext>::enter::<rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>
  36:        0x10ea0be58 - <rustc_interface[a117036b955f68d8]::interface::Compiler>::enter::<rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}::{closure#2}, core[95bb6d661b676f4d]::result::Result<core[95bb6d661b676f4d]::option::Option<rustc_interface[a117036b955f68d8]::queries::Linker>, rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>
  37:        0x10e9c8acb - rustc_span[3eb4c8eecaecace3]::with_source_map::<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_interface[a117036b955f68d8]::interface::run_compiler<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  38:        0x10e9dfc4a - <scoped_tls[c451c38e2ed76225]::ScopedKey<rustc_span[3eb4c8eecaecace3]::SessionGlobals>>::set::<rustc_interface[a117036b955f68d8]::interface::run_compiler<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}>::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>
  39:        0x10ea61240 - std[a294a2425e1eb3e0]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[a117036b955f68d8]::util::run_in_thread_pool_with_globals<rustc_interface[a117036b955f68d8]::interface::run_compiler<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}>::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>
  40:        0x10e9d3c7d - std[a294a2425e1eb3e0]::panicking::try::<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, core[95bb6d661b676f4d]::panic::unwind_safe::AssertUnwindSafe<<std[a294a2425e1eb3e0]::thread::Builder>::spawn_unchecked_<rustc_interface[a117036b955f68d8]::util::run_in_thread_pool_with_globals<rustc_interface[a117036b955f68d8]::interface::run_compiler<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}>::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  41:        0x10ea02390 - <<std[a294a2425e1eb3e0]::thread::Builder>::spawn_unchecked_<rustc_interface[a117036b955f68d8]::util::run_in_thread_pool_with_globals<rustc_interface[a117036b955f68d8]::interface::run_compiler<core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>, rustc_driver[2cc99eb9ce8fd4d0]::run_compiler::{closure#1}>::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[95bb6d661b676f4d]::result::Result<(), rustc_errors[6f8b657b3a4b06c4]::ErrorGuaranteed>>::{closure#1} as core[95bb6d661b676f4d]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  42:        0x1011e696b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h8334a1a13ff5c0ac
  43:        0x10124969f - std::sys::unix::thread::Thread::new::thread_start::hc5c4d36d8f981ddc
  44:     0x7ff80d84d4e1 - __pthread_start

error: internal compiler error: unexpected panic

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 1.67.0-dev running on x86_64-apple-darwin

query stack during panic:
#0 [typeck] type-checking `bar`
#1 [typeck_item_bodies] type-checking all item bodies
#2 [analysis] running analysis passes on this crate
end of query stack

Regression

Regression in nightly-2022-05-28, perhaps from 56fd680 (#96046)

Version

  • nightly: 2022-11-18 b833ad5 on playground
  • with debug assertions: slightly newer, built locally from 62c627c
@jruderman jruderman 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 Nov 19, 2022
@jruderman
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Might be a duplicate of #104085

@compiler-errors
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Should be an easy fix, just need to delay a bug if the transmute source/target has (non-region) infer vars and bail from the check_transmute fn.

@compiler-errors compiler-errors added the E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. label Nov 19, 2022
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@rustbot claim

@Rustin170506 Rustin170506 mentioned this issue Nov 21, 2022
Merged
@bors bors closed this as completed in 9cefd9d Nov 22, 2022
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C-bug Category: This is a bug. E-easy Call for participation: Easy difficulty. Experience needed to fix: Not much. Good first issue. 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.
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Do not check transmute if has non region infer Rustin170506/rust
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@jruderman @compiler-errors @Rustin170506