Closed
Description
Code
#![feature(generic_const_exprs)]
fn foo<const N: usize>(
_: [u8; {
{
N
}
}],
) {
}
fn ice<const L: usize>()
where
[(); (L - 1) + 1 + L]:,
{
foo::<_, L>([(); L + 1 + L]);
}
Meta
rustc --version --verbose
:
rustc 1.73.0-nightly (0d95f9132 2023-07-26)
binary: rustc
commit-hash: 0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8
commit-date: 2023-07-26
host: x86_64-unknown-linux-gnu
release: 1.73.0-nightly
LLVM version: 16.0.5
Error output
warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
--> treereduce.out: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[E0601]: `main` function not found in crate `treereduce`
--> treereduce.out:17:2
|
17 | }
| ^ consider adding a `main` function to `treereduce.out`
error[E0107]: function takes 1 generic argument but 2 generic arguments were supplied
--> treereduce.out:16:5
|
16 | foo::<_, L>([(); L + 1 + L]);
| ^^^ - help: remove this generic argument
| |
| expected 1 generic argument
|
note: function defined here, with 1 generic parameter: `N`
--> treereduce.out:3:4
|
3 | fn foo<const N: usize>(
| ^^^ --------------
error[E0308]: mismatched types
--> treereduce.out:16:18
|
16 | foo::<_, L>([(); L + 1 + L]);
| ^^ expected `u8`, found `()`
error: unconstrained generic constant
--> treereduce.out:16:22
|
16 | foo::<_, L>([(); L + 1 + L]);
| ^^^^^^^^^
|
= help: try adding a `where` bound using this expression: `where [(); L + 1 + L]:`
error: unconstrained generic constant
--> treereduce.out:16:17
|
16 | foo::<_, L>([(); L + 1 + L]);
| ----------- ^^^^^^^^^^^^^^^
| |
| required by a bound introduced by this call
|
= help: try adding a `where` bound using this expression: `where [(); {
{
N
}
}]:`
note: required by a bound in `foo`
--> treereduce.out:4:13
|
3 | fn foo<const N: usize>(
| --- required by a bound in this function
4 | _: [u8; {
| _____________^
5 | | {
6 | | N
7 | | }
8 | | }],
| |_____^ required by this bound in `foo`
Backtrace
error: internal compiler error: compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs:3380:21: const evaluatable failed for non-unevaluated const `Const { ty: usize, kind: (Add: Const { ty: usize, kind: (Add: Const { ty: usize, kind: L/#0 }, Const { ty: usize, kind: Leaf(0x0000000000000001) }) }, Const { ty: usize, kind: L/#0 }) }`
thread 'rustc' panicked at 'Box<dyn Any>', /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/compiler/rustc_errors/src/lib.rs:1640:9
stack backtrace:
0: 0x7f8872725fc1 - std::backtrace_rs::backtrace::libunwind::trace::hf6e154905f06aaf4
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
1: 0x7f8872725fc1 - std::backtrace_rs::backtrace::trace_unsynchronized::h18cebe760f1510fa
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7f8872725fc1 - std::sys_common::backtrace::_print_fmt::hffe418505cdd97e8
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/sys_common/backtrace.rs:65:5
3: 0x7f8872725fc1 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h19176839053c7e42
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7f887278c49c - core::fmt::rt::Argument::fmt::hf19c9b9307d45f5d
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/core/src/fmt/rt.rs:138:9
5: 0x7f887278c49c - core::fmt::write::h79cbf0496735b1b7
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/core/src/fmt/mod.rs:1094:21
6: 0x7f88727185ce - std::io::Write::write_fmt::h11f28dab14e62928
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/io/mod.rs:1714:15
7: 0x7f8872725dd5 - std::sys_common::backtrace::_print::he32b2def77c6f779
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7f8872725dd5 - std::sys_common::backtrace::print::h6be21ee209c4bf2f
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7f8872728e2a - std::panicking::panic_hook_with_disk_dump::{{closure}}::h9e13983d414e65b8
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/panicking.rs:278:22
10: 0x7f8872728ac3 - std::panicking::panic_hook_with_disk_dump::he404d3925670a989
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/panicking.rs:312:9
11: 0x7f8871586f79 - rustc_driver_impl[11f9c42ddd32a232]::install_ice_hook::{closure#0}
12: 0x7f88727296d0 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8ce3cd052223b94b
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/alloc/src/boxed.rs:2021:9
13: 0x7f88727296d0 - std::panicking::rust_panic_with_hook::h1fcb49fe91d725f0
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/panicking.rs:733:13
14: 0x7f8871b53711 - std[2e963e9f253cdd71]::panicking::begin_panic::<rustc_errors[16c9db0e0ca0a6f7]::ExplicitBug>::{closure#0}
15: 0x7f8871b51396 - std[2e963e9f253cdd71]::sys_common::backtrace::__rust_end_short_backtrace::<std[2e963e9f253cdd71]::panicking::begin_panic<rustc_errors[16c9db0e0ca0a6f7]::ExplicitBug>::{closure#0}, !>
16: 0x7f8871ac2e96 - std[2e963e9f253cdd71]::panicking::begin_panic::<rustc_errors[16c9db0e0ca0a6f7]::ExplicitBug>
17: 0x7f8871b6fb24 - <rustc_errors[16c9db0e0ca0a6f7]::HandlerInner>::bug::<alloc[d59d314c1498fc03]::string::String>
18: 0x7f8871b6f788 - <rustc_errors[16c9db0e0ca0a6f7]::Handler>::bug::<alloc[d59d314c1498fc03]::string::String>
19: 0x7f8871b6b10c - rustc_middle[2dbe2ef140938139]::util::bug::opt_span_bug_fmt::<rustc_span[6541493927a8eee4]::span_encoding::Span>::{closure#0}
20: 0x7f8871b69f0a - rustc_middle[2dbe2ef140938139]::ty::context::tls::with_opt::<rustc_middle[2dbe2ef140938139]::util::bug::opt_span_bug_fmt<rustc_span[6541493927a8eee4]::span_encoding::Span>::{closure#0}, !>::{closure#0}
21: 0x7f8871b69ed8 - rustc_middle[2dbe2ef140938139]::ty::context::tls::with_context_opt::<rustc_middle[2dbe2ef140938139]::ty::context::tls::with_opt<rustc_middle[2dbe2ef140938139]::util::bug::opt_span_bug_fmt<rustc_span[6541493927a8eee4]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
22: 0x7f8870078f90 - rustc_middle[2dbe2ef140938139]::util::bug::bug_fmt
23: 0x7f8872229e8f - <rustc_infer[d209e7ec2feaa707]::infer::error_reporting::TypeErrCtxt as rustc_trait_selection[29a196fad0f1dedf]::traits::error_reporting::InferCtxtPrivExt>::report_not_const_evaluatable_error
24: 0x7f8872220617 - <rustc_infer[d209e7ec2feaa707]::infer::error_reporting::TypeErrCtxt as rustc_trait_selection[29a196fad0f1dedf]::traits::error_reporting::TypeErrCtxtExt>::report_selection_error
25: 0x7f887222c5ab - <rustc_infer[d209e7ec2feaa707]::infer::error_reporting::TypeErrCtxt as rustc_trait_selection[29a196fad0f1dedf]::traits::error_reporting::InferCtxtPrivExt>::report_fulfillment_error
26: 0x7f887221f15b - <rustc_infer[d209e7ec2feaa707]::infer::error_reporting::TypeErrCtxt as rustc_trait_selection[29a196fad0f1dedf]::traits::error_reporting::TypeErrCtxtExt>::report_fulfillment_errors
27: 0x7f886f918b23 - <rustc_hir_typeck[dcea5a7d05095b9c]::fn_ctxt::FnCtxt>::check_call
28: 0x7f886f88287d - <rustc_hir_typeck[dcea5a7d05095b9c]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
29: 0x7f886f8c1f67 - <rustc_hir_typeck[dcea5a7d05095b9c]::fn_ctxt::FnCtxt>::check_block_with_expected
30: 0x7f886f882e15 - <rustc_hir_typeck[dcea5a7d05095b9c]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
31: 0x7f887001c6c6 - <rustc_hir_typeck[dcea5a7d05095b9c]::fn_ctxt::FnCtxt>::check_return_expr
32: 0x7f8870012f6d - rustc_hir_typeck[dcea5a7d05095b9c]::check::check_fn
33: 0x7f8870001697 - rustc_hir_typeck[dcea5a7d05095b9c]::typeck
34: 0x7f886f63954e - rustc_query_impl[764276e1d4d25526]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[764276e1d4d25526]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2dbe2ef140938139]::query::erase::Erased<[u8; 8usize]>>
35: 0x7f886f63951e - <rustc_query_impl[764276e1d4d25526]::query_impl::typeck::dynamic_query::{closure#2} as core[5cd17d5b9f662bec]::ops::function::FnOnce<(rustc_middle[2dbe2ef140938139]::ty::context::TyCtxt, rustc_span[6541493927a8eee4]::def_id::LocalDefId)>>::call_once
36: 0x7f886f7a607d - rustc_query_system[455882a7c9f92b0a]::query::plumbing::try_execute_query::<rustc_query_impl[764276e1d4d25526]::DynamicConfig<rustc_query_system[455882a7c9f92b0a]::query::caches::VecCache<rustc_span[6541493927a8eee4]::def_id::LocalDefId, rustc_middle[2dbe2ef140938139]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[764276e1d4d25526]::plumbing::QueryCtxt, false>
37: 0x7f8870eef6cf - rustc_query_impl[764276e1d4d25526]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
38: 0x7f8870a24c2d - rustc_data_structures[456d5294c5533e9]::sync::par_for_each_in::<&[rustc_span[6541493927a8eee4]::def_id::LocalDefId], <rustc_middle[2dbe2ef140938139]::hir::map::Map>::par_body_owners<rustc_hir_analysis[7376a6bdbe652c9c]::check_crate::{closure#7}>::{closure#0}>
39: 0x7f8870a23f0c - rustc_hir_analysis[7376a6bdbe652c9c]::check_crate
40: 0x7f8870a1de9a - rustc_interface[7f8477932cb20ad4]::passes::analysis
41: 0x7f8870a8539a - rustc_query_impl[764276e1d4d25526]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[764276e1d4d25526]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[2dbe2ef140938139]::query::erase::Erased<[u8; 1usize]>>
42: 0x7f8870a85389 - <rustc_query_impl[764276e1d4d25526]::query_impl::analysis::dynamic_query::{closure#2} as core[5cd17d5b9f662bec]::ops::function::FnOnce<(rustc_middle[2dbe2ef140938139]::ty::context::TyCtxt, ())>>::call_once
43: 0x7f8870c2c818 - rustc_query_system[455882a7c9f92b0a]::query::plumbing::try_execute_query::<rustc_query_impl[764276e1d4d25526]::DynamicConfig<rustc_query_system[455882a7c9f92b0a]::query::caches::SingleCache<rustc_middle[2dbe2ef140938139]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[764276e1d4d25526]::plumbing::QueryCtxt, false>
44: 0x7f8870c2c5a7 - rustc_query_impl[764276e1d4d25526]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
45: 0x7f88707acad5 - <rustc_middle[2dbe2ef140938139]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[11f9c42ddd32a232]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>>
46: 0x7f88707ac102 - <rustc_interface[7f8477932cb20ad4]::interface::Compiler>::enter::<rustc_driver_impl[11f9c42ddd32a232]::run_compiler::{closure#1}::{closure#2}, core[5cd17d5b9f662bec]::result::Result<core[5cd17d5b9f662bec]::option::Option<rustc_interface[7f8477932cb20ad4]::queries::Linker>, rustc_span[6541493927a8eee4]::ErrorGuaranteed>>
47: 0x7f88707a51a8 - std[2e963e9f253cdd71]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[7f8477932cb20ad4]::util::run_in_thread_pool_with_globals<rustc_interface[7f8477932cb20ad4]::interface::run_compiler<core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>, rustc_driver_impl[11f9c42ddd32a232]::run_compiler::{closure#1}>::{closure#0}, core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>>
48: 0x7f88707a492e - <<std[2e963e9f253cdd71]::thread::Builder>::spawn_unchecked_<rustc_interface[7f8477932cb20ad4]::util::run_in_thread_pool_with_globals<rustc_interface[7f8477932cb20ad4]::interface::run_compiler<core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>, rustc_driver_impl[11f9c42ddd32a232]::run_compiler::{closure#1}>::{closure#0}, core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5cd17d5b9f662bec]::result::Result<(), rustc_span[6541493927a8eee4]::ErrorGuaranteed>>::{closure#1} as core[5cd17d5b9f662bec]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
49: 0x7f8872733dc5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6a397ffa79ce97be
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/alloc/src/boxed.rs:2007:9
50: 0x7f8872733dc5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd63e3cd46e3d7a48
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/alloc/src/boxed.rs:2007:9
51: 0x7f8872733dc5 - std::sys::unix::thread::Thread::new::thread_start::h06e8fe5bf1fac20c
at /rustc/0d95f9132909ae7c5f2456748d0ffd1c3ba4a8e8/library/std/src/sys/unix/thread.rs:108:17
52: 0x7f886e25a44b - <unknown>
53: 0x7f886e2dde40 - <unknown>
54: 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: please attach the file at `/tmp/im/rustc-ice-2023-07-27T23:14:40.504323337Z-731981.txt` to your bug report
query stack during panic:
#0 [typeck] type-checking `ice`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 6 previous errors; 1 warning emitted
Some errors have detailed explanations: E0107, E0308, E0601.
For more information about an error, try `rustc --explain E0107`.
Metadata
Metadata
Assignees
Labels
Area: Constant evaluation, covers all const contexts (static, const fn, ...)Category: This is a bug.`#![feature(generic_const_exprs)]`Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Relevant to the compiler team, which will review and decide on the PR/issue.This issue requires a nightly compiler in some way.