Closed
Description
I got this code by our own fuzzing tool.
This ICE looks like #114317 ,and it also caused by generic_const_exprs😂
Code
#![feature(generic_const_exprs)]
const fn t<const N: usize>() -> u8 {
N as u8
}
#[repr(u8)]
enum T<const N: u8 = { T::<0>::A as u8 + T::<0>::B as u8 }>
where
[(); N as usize]:,
T: ?Sized,
{
A,
}
fn main() {
A = t::<N>() as u8,
B,
}Meta
rustc --version --verbose:
rustc 1.73.0 (cc66ad468 2023-10-03)
binary: rustc
commit-hash: cc66ad468955717ab92600c770da8c1601a4ff33
commit-date: 2023-10-03
host: x86_64-unknown-linux-gnu
release: 1.73.0
LLVM version: 17.0.2
It can also be reproduced by nightly(2023-10-8)
Error output
error: expected one of `!`, `(`, `.`, `::`, `;`, `<`, `?`, or `}`, found `,`
--> interesting/code.rs:26:23
|
26 | A = t::<N>() as u8,
| ^ expected one of 8 possible tokens
error[E0554]: `#![feature]` may not be used on the stable release channel
--> interesting/code.rs:1:1
|
1 | #![feature(generic_const_exprs)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
--> interesting/code.rs:1:12
|
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
error: `?Trait` bounds are only permitted at the point where a type parameter is declared
--> interesting/code.rs:17:8
|
17 | T: ?Sized,
| ^^^^^^
error: internal compiler error: compiler/rustc_middle/src/ty/generic_args.rs:942:9: const parameter `N/#0` (Const { ty: u8, kind: N/#0 }/0) out of range when substituting args=[]
thread 'rustc' panicked at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/compiler/rustc_errors/src/lib.rs:1635:9:
Box<dyn Any>
Backtrace
stack backtrace:
0: 0x7fa258a4849c - std::backtrace_rs::backtrace::libunwind::trace::he43a6a3949163f8c
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7fa258a4849c - std::backtrace_rs::backtrace::trace_unsynchronized::h50db52ca99f692e7
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fa258a4849c - std::sys_common::backtrace::_print_fmt::hd37d595f2ceb2d3c
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/sys_common/backtrace.rs:67:5
3: 0x7fa258a4849c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h678bbcf9da6d7d75
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fa258aae3fc - core::fmt::rt::Argument::fmt::h3a159adc080a6fc9
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/fmt/rt.rs:138:9
5: 0x7fa258aae3fc - core::fmt::write::hb8eaf5a8e45a738e
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/fmt/mod.rs:1094:21
6: 0x7fa258a3b12e - std::io::Write::write_fmt::h9663fe36b2ee08f9
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/io/mod.rs:1714:15
7: 0x7fa258a48284 - std::sys_common::backtrace::_print::hcd4834796ee88ad2
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fa258a48284 - std::sys_common::backtrace::print::h1360e9450e4f922a
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fa258a4b193 - std::panicking::default_hook::{{closure}}::h2609fa95cd5ab1f4
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/panicking.rs:270:22
10: 0x7fa258a4aeac - std::panicking::default_hook::h6d75f5747cab6e8d
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/panicking.rs:290:9
11: 0x7fa25bc15a3e - <alloc[98253621d83cbf53]::boxed::Box<rustc_driver_impl[566d207f92c3d9d2]::install_ice_hook::{closure#0}> as core[d28c4e8d9c4eebaa]::ops::function::Fn<(&dyn for<'a, 'b> core[d28c4e8d9c4eebaa]::ops::function::Fn<(&'a core[d28c4e8d9c4eebaa]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[d28c4e8d9c4eebaa]::marker::Sync + core[d28c4e8d9c4eebaa]::marker::Send, &core[d28c4e8d9c4eebaa]::panic::panic_info::PanicInfo)>>::call
12: 0x7fa258a4b9be - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h05249de742e1768e
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/alloc/src/boxed.rs:2021:9
13: 0x7fa258a4b9be - std::panicking::rust_panic_with_hook::h57e78470c47c84de
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/panicking.rs:711:13
14: 0x7fa25c166521 - std[3759e478f3a6c4f2]::panicking::begin_panic::<rustc_errors[f3962fbeb8edb247]::ExplicitBug>::{closure#0}
15: 0x7fa25c162206 - std[3759e478f3a6c4f2]::sys_common::backtrace::__rust_end_short_backtrace::<std[3759e478f3a6c4f2]::panicking::begin_panic<rustc_errors[f3962fbeb8edb247]::ExplicitBug>::{closure#0}, !>
16: 0x7fa25c12c6c6 - std[3759e478f3a6c4f2]::panicking::begin_panic::<rustc_errors[f3962fbeb8edb247]::ExplicitBug>
17: 0x7fa25c139134 - <rustc_errors[f3962fbeb8edb247]::HandlerInner>::bug::<alloc[98253621d83cbf53]::string::String>
18: 0x7fa25c138fc6 - <rustc_errors[f3962fbeb8edb247]::Handler>::bug::<alloc[98253621d83cbf53]::string::String>
19: 0x7fa25c1e05ac - rustc_middle[5935fdd60c99b3fe]::util::bug::opt_span_bug_fmt::<rustc_span[4c9f011e8b033119]::span_encoding::Span>::{closure#0}
20: 0x7fa25c1dec5a - rustc_middle[5935fdd60c99b3fe]::ty::context::tls::with_opt::<rustc_middle[5935fdd60c99b3fe]::util::bug::opt_span_bug_fmt<rustc_span[4c9f011e8b033119]::span_encoding::Span>::{closure#0}, !>::{closure#0}
21: 0x7fa25c1dec28 - rustc_middle[5935fdd60c99b3fe]::ty::context::tls::with_context_opt::<rustc_middle[5935fdd60c99b3fe]::ty::context::tls::with_opt<rustc_middle[5935fdd60c99b3fe]::util::bug::opt_span_bug_fmt<rustc_span[4c9f011e8b033119]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
22: 0x7fa25a4e21b0 - rustc_middle[5935fdd60c99b3fe]::util::bug::bug_fmt
23: 0x7fa25c15d620 - <rustc_middle[5935fdd60c99b3fe]::ty::generic_args::ArgFolder>::const_param_out_of_range
24: 0x7fa25a7519ad - <rustc_middle[5935fdd60c99b3fe]::ty::generic_args::ArgFolder as rustc_type_ir[230b024fbe18c114]::fold::FallibleTypeFolder<rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt>>::try_fold_const
25: 0x7fa259d19971 - <&rustc_middle[5935fdd60c99b3fe]::ty::list::List<rustc_middle[5935fdd60c99b3fe]::ty::generic_args::GenericArg> as rustc_type_ir[230b024fbe18c114]::fold::TypeFoldable<rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[5935fdd60c99b3fe]::ty::generic_args::ArgFolder>
26: 0x7fa259d079f5 - <rustc_middle[5935fdd60c99b3fe]::ty::consts::Const as rustc_type_ir[230b024fbe18c114]::fold::TypeSuperFoldable<rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt>>::try_super_fold_with::<rustc_middle[5935fdd60c99b3fe]::ty::generic_args::ArgFolder>
27: 0x7fa259d06e66 - <rustc_middle[5935fdd60c99b3fe]::ty::generic_args::GenericArg as rustc_type_ir[230b024fbe18c114]::fold::TypeFoldable<rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt>>::try_fold_with::<rustc_middle[5935fdd60c99b3fe]::ty::generic_args::ArgFolder>
28: 0x7fa25a4ff7d0 - <rustc_middle[5935fdd60c99b3fe]::ty::generics::GenericPredicates>::instantiate_into
29: 0x7fa259fb67e0 - <rustc_trait_selection[48b7f7e13fbddf35]::traits::wf::WfPredicates>::nominal_obligations
30: 0x7fa259f98415 - <rustc_trait_selection[48b7f7e13fbddf35]::traits::wf::WfPredicates>::compute
31: 0x7fa259f877a2 - <rustc_trait_selection[48b7f7e13fbddf35]::traits::fulfill::FulfillProcessor as rustc_data_structures[29929b1a5d4d6700]::obligation_forest::ObligationProcessor>::process_obligation
32: 0x7fa259f83074 - <rustc_data_structures[29929b1a5d4d6700]::obligation_forest::ObligationForest<rustc_trait_selection[48b7f7e13fbddf35]::traits::fulfill::PendingPredicateObligation>>::process_obligations::<rustc_trait_selection[48b7f7e13fbddf35]::traits::fulfill::FulfillProcessor>
33: 0x7fa25a5da251 - <rustc_trait_selection[48b7f7e13fbddf35]::traits::engine::ObligationCtxt>::select_all_or_error
34: 0x7fa25a526729 - rustc_hir_analysis[9bbb5014796bfef7]::check::wfcheck::check_type_defn
35: 0x7fa25a50429e - rustc_hir_analysis[9bbb5014796bfef7]::check::wfcheck::check_well_formed
36: 0x7fa259cea44c - rustc_query_impl[778daaabc67f3fff]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[778daaabc67f3fff]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 0usize]>>
37: 0x7fa25a5ed077 - rustc_query_system[e0e328d29a6e1c80]::query::plumbing::try_execute_query::<rustc_query_impl[778daaabc67f3fff]::DynamicConfig<rustc_query_system[e0e328d29a6e1c80]::query::caches::VecCache<rustc_hir[eee75afb991cf387]::hir_id::OwnerId, rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[778daaabc67f3fff]::plumbing::QueryCtxt, false>
38: 0x7fa25a5ecd84 - rustc_query_impl[778daaabc67f3fff]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
39: 0x7fa25adbcc00 - rustc_data_structures[29929b1a5d4d6700]::sync::par_for_each_in::<&[rustc_hir[eee75afb991cf387]::hir::ImplItemId], <rustc_middle[5935fdd60c99b3fe]::hir::ModuleItems>::par_impl_items<rustc_hir_analysis[9bbb5014796bfef7]::check::wfcheck::check_mod_type_wf::{closure#1}>::{closure#0}>
40: 0x7fa25adbca7f - rustc_hir_analysis[9bbb5014796bfef7]::check::wfcheck::check_mod_type_wf
41: 0x7fa25a94ba3c - rustc_query_impl[778daaabc67f3fff]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[778daaabc67f3fff]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 0usize]>>
42: 0x7fa25a94ba1e - <rustc_query_impl[778daaabc67f3fff]::query_impl::check_mod_type_wf::dynamic_query::{closure#2} as core[d28c4e8d9c4eebaa]::ops::function::FnOnce<(rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt, rustc_span[4c9f011e8b033119]::def_id::LocalModDefId)>>::call_once
43: 0x7fa25aba35e3 - rustc_query_system[e0e328d29a6e1c80]::query::plumbing::try_execute_query::<rustc_query_impl[778daaabc67f3fff]::DynamicConfig<rustc_query_system[e0e328d29a6e1c80]::query::caches::DefaultCache<rustc_span[4c9f011e8b033119]::def_id::LocalModDefId, rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[778daaabc67f3fff]::plumbing::QueryCtxt, false>
44: 0x7fa25b589234 - rustc_query_impl[778daaabc67f3fff]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
45: 0x7fa25addd8b3 - rustc_data_structures[29929b1a5d4d6700]::sync::par_for_each_in::<&[rustc_hir[eee75afb991cf387]::hir_id::OwnerId], <rustc_middle[5935fdd60c99b3fe]::hir::map::Map>::par_for_each_module<rustc_hir_analysis[9bbb5014796bfef7]::check_crate::{closure#5}::{closure#0}::{closure#0}>::{closure#0}>
46: 0x7fa25addcc6e - rustc_hir_analysis[9bbb5014796bfef7]::check_crate
47: 0x7fa25add349a - rustc_interface[5bdd18de9f5858d8]::passes::analysis
48: 0x7fa25b11b70a - rustc_query_impl[778daaabc67f3fff]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[778daaabc67f3fff]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 1usize]>>
49: 0x7fa25b11b6f9 - <rustc_query_impl[778daaabc67f3fff]::query_impl::analysis::dynamic_query::{closure#2} as core[d28c4e8d9c4eebaa]::ops::function::FnOnce<(rustc_middle[5935fdd60c99b3fe]::ty::context::TyCtxt, ())>>::call_once
50: 0x7fa25b2bdbe8 - rustc_query_system[e0e328d29a6e1c80]::query::plumbing::try_execute_query::<rustc_query_impl[778daaabc67f3fff]::DynamicConfig<rustc_query_system[e0e328d29a6e1c80]::query::caches::SingleCache<rustc_middle[5935fdd60c99b3fe]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[778daaabc67f3fff]::plumbing::QueryCtxt, false>
51: 0x7fa25b2bd969 - rustc_query_impl[778daaabc67f3fff]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
52: 0x7fa25aec7973 - <rustc_interface[5bdd18de9f5858d8]::queries::QueryResult<&rustc_middle[5935fdd60c99b3fe]::ty::context::GlobalCtxt>>::enter::<core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>, rustc_driver_impl[566d207f92c3d9d2]::run_compiler::{closure#1}::{closure#2}::{closure#6}>
53: 0x7fa25aec694a - <rustc_interface[5bdd18de9f5858d8]::interface::Compiler>::enter::<rustc_driver_impl[566d207f92c3d9d2]::run_compiler::{closure#1}::{closure#2}, core[d28c4e8d9c4eebaa]::result::Result<core[d28c4e8d9c4eebaa]::option::Option<rustc_interface[5bdd18de9f5858d8]::queries::Linker>, rustc_span[4c9f011e8b033119]::ErrorGuaranteed>>
54: 0x7fa25aec3c68 - std[3759e478f3a6c4f2]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[5bdd18de9f5858d8]::util::run_in_thread_pool_with_globals<rustc_interface[5bdd18de9f5858d8]::interface::run_compiler<core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>, rustc_driver_impl[566d207f92c3d9d2]::run_compiler::{closure#1}>::{closure#0}, core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>>
55: 0x7fa25aec33ee - <<std[3759e478f3a6c4f2]::thread::Builder>::spawn_unchecked_<rustc_interface[5bdd18de9f5858d8]::util::run_in_thread_pool_with_globals<rustc_interface[5bdd18de9f5858d8]::interface::run_compiler<core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>, rustc_driver_impl[566d207f92c3d9d2]::run_compiler::{closure#1}>::{closure#0}, core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[d28c4e8d9c4eebaa]::result::Result<(), rustc_span[4c9f011e8b033119]::ErrorGuaranteed>>::{closure#1} as core[d28c4e8d9c4eebaa]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
56: 0x7fa258a56295 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::haadd4e5af2ab0d62
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/alloc/src/boxed.rs:2007:9
57: 0x7fa258a56295 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he4ba1fb09c16d807
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/alloc/src/boxed.rs:2007:9
58: 0x7fa258a56295 - std::sys::unix::thread::Thread::new::thread_start::he524ecf4b47bee95
at /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/std/src/sys/unix/thread.rs:108:17
59: 0x7fa25891a609 - start_thread
60: 0x7fa25883d133 - clone
61: 0x0 - <unknown>
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.73.0 (cc66ad468 2023-10-03) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [check_well_formed] checking that `T` is well-formed
#1 [check_mod_type_wf] checking that types are well-formed in top-level module
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 4 previous errors; 1 warning emitted