ICE: `Normalization of 'ty::ConstKind::Expr' is unimplemented`

[matthiaskrgr]

auto-reduced (treereduce-rust):

//@compile-flags: --crate-type=lib
#![feature(unsized_const_params)]
#![feature(adt_const_params, const_ptr_read, generic_const_exprs)]

use std::mem::ManuallyDrop;

const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
where
    [(); A.len()]:,
    [(); B.len()]:,
    [(); A.len() + B.len()]:,
{
    #[repr(C)]
    struct ConcatJoin<const N: usize, const M: usize> {
        left: [u8; N],
        right: [u8; M],
    }

    #[repr(C)]
    union ConcatJoiner<const N: usize, const M: usize>
    where
        [(); N + M]:,
    {
        whole: ManuallyDrop<[u8; N + M]>,
        split: ManuallyDrop<ConcatJoin<N, M>>,
    }

    const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N] {
        unsafe {
            let joiner = ConcatJoiner {
                split: ManuallyDrop::new(ConcatJoin { left: a, right: b }),
            };
            let join = joiner.whole;
            ManuallyDrop::into_inner(join)
        }
    }

    struct Inner<const A: &'static str, const B: &'static str>;
    impl<const A: &'static str, const B: &'static str> Inner<A, B>
    where
        [(); A.len()]:,
        [(); B.len()]:,
        [(); A.len() + B.len()]:,
    {
        const ABSTR: &'static str = unsafe {
            std::str::from_utf8_unchecked(&concat_arr(
                A.as_ptr().cast().read(),
                B.as_ptr().cast().read(),
            ))
        };
    }

    Inner::<A, B>::ABSTR
}

const FOO: &str = "foo";
const BAR: &str = "bar";
const FOOBAR: &str = concat_strs::<FOO, BAR>();

original code

original:

#![allow(incomplete_features)]
#![feature(adt_const_params, const_ptr_read, generic_const_exprs)]

use std::mem::ManuallyDrop;

const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
where
    [(); A.len()]:,
    [(); B.len()]:,
    [(); A.len() + B.len()]:,
{
    #[repr(C)]
    struct ConcatJoin<const N: usize, const M: usize> {
        left: [u8; N],
        right: [u8; M],
    }

    #[repr(C)]
    union ConcatJoiner<const N: usize, const M: usize>
    where
        [(); N + M]:,
    {
        whole: ManuallyDrop<[u8; N + M]>,
        split: ManuallyDrop<ConcatJoin<N, M>>,
    }

    const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N]
    where
        [(); M + N]:,
    {
        unsafe {
            let joiner = ConcatJoiner {
                split: ManuallyDrop::new(ConcatJoin { left: a, right: b }),
            };
            let join = joiner.whole;
            ManuallyDrop::into_inner(join)
        }
    }

    struct Inner<const A: &'static str, const B: &'static str>;
    impl<const A: &'static str, const B: &'static str> Inner<A, B>
    where
        [(); A.len()]:,
        [(); B.len()]:,
        [(); A.len() + B.len()]:,
    {
        const ABSTR: &'static str = unsafe {
            std::str::from_utf8_unchecked(&concat_arr(
                A.as_ptr().cast::<[u8; A.len()]>().read(),
                B.as_ptr().cast::<[u8; B.len()]>().read(),
            ))
        };
    }

    Inner::<A, B>::ABSTR
}

const FOO: &str = "foo";
const BAR: &str = "bar";
const FOOBAR: &str = concat_strs::<FOO, BAR>();

Version information

rustc 1.84.0-nightly (6503543d1 2024-11-12)
binary: rustc
commit-hash: 6503543d11583d1686d4989847b2afbec8d9fdba
commit-date: 2024-11-12
host: x86_64-unknown-linux-gnu
release: 1.84.0-nightly
LLVM version: 19.1.3

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc -Zcrate-attr=feature(unsized_const_params) --crate-type=lib

Program output

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:1:46
  |
1 | #![feature(adt_const_params, const_ptr_read, 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

warning: the feature `unsized_const_params` is incomplete and may not be safe to use and/or cause compiler crashes
 --> <crate attribute>:1:9
  |
1 | feature(unsized_const_params)
  |         ^^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #95174 <https://github.com/rust-lang/rust/issues/95174> for more information

warning: the feature `const_ptr_read` has been stable since 1.71.0 and no longer requires an attribute to enable
 --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:1:30
  |
1 | #![feature(adt_const_params, const_ptr_read, generic_const_exprs)]
  |                              ^^^^^^^^^^^^^^
  |
  = note: `#[warn(stable_features)]` on by default

warning: type annotations needed
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:45:35
   |
45 |                 A.as_ptr().cast().read(),
   |                                   ^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
   = note: for more information, see issue #46906 <https://github.com/rust-lang/rust/issues/46906>
   = note: `#[warn(tyvar_behind_raw_pointer)]` on by default

warning: type annotations needed
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:46:35
   |
46 |                 B.as_ptr().cast().read(),
   |                                   ^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
   = note: for more information, see issue #46906 <https://github.com/rust-lang/rust/issues/46906>

warning: function `concat_strs` is never used
 --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:5:10
  |
5 | const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
  |          ^^^^^^^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

warning: associated constant `ABSTR` is never used
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:43:15
   |
37 | /     impl<const A: &'static str, const B: &'static str> Inner<A, B>
38 | |     where
39 | |         [(); A.len()]:,
40 | |         [(); B.len()]:,
41 | |         [(); A.len() + B.len()]:,
   | |_________________________________- associated constant in this implementation
42 |       {
43 |           const ABSTR: &'static str = unsafe {
   |                 ^^^^^

warning: constant `FOO` is never used
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:54:7
   |
54 | const FOO: &str = "foo";
   |       ^^^

warning: constant `BAR` is never used
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:55:7
   |
55 | const BAR: &str = "bar";
   |       ^^^

warning: constant `FOOBAR` is never used
  --> /tmp/icemaker_global_tempdir.M7QGlwHPHRjj/rustc_testrunner_tmpdir_reporting.Pgzdb9IPCHkV/mvce.rs:56:7
   |
56 | const FOOBAR: &str = concat_strs::<FOO, BAR>();
   |       ^^^^^^

warning: 10 warnings emitted

note: no errors encountered even though delayed bugs were created

note: those delayed bugs will now be shown as internal compiler errors

error: internal compiler error: Unevaluated `ty::Const` in MIR body
  |
  = note: delayed at /rustc/6503543d11583d1686d4989847b2afbec8d9fdba/compiler/rustc_middle/src/mir/consts.rs:328:40 - disabled backtrace

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 make sure that you have updated to the latest nightly

note: rustc 1.84.0-nightly (6503543d1 2024-11-12) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z crate-attr=feature(unsized_const_params) --crate-type lib -Z dump-mir-dir=dir

query stack during panic:
end of query stack

@rustbot label +F-adt_const_params +F-const_ptr_read +F-generic_const_exprs +F-unsized_const_params

[matthiaskrgr]

bisects to #132927 as well

[BoxyUwU]

This is another case of generic_const_exprs producing unevaluated consts that we don't have the machinery to normalize, I don't see this ever getting fixed

[matthiaskrgr]

auto-reduced (treereduce-rust):

#![feature(adt_const_params, const_ptr_read, generic_const_exprs)]

const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
where
    [(); A.len()]:,
    [(); B.len()]:,
    [(); A.len() + B.len()]:,
{
    #[repr(C)]
    #[repr(C)]

    const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N] {}

    struct Inner<const A: &'static str, const B: &'static str>;
    impl<const A: &'static str, const B: &'static str> Inner<A, B>
    where
        [(); A.len()]:,
        [(); B.len()]:,
        [(); A.len() + B.len()]:,
    {
        const ABSTR: &'static str = unsafe {
            std::str::from_utf8_unchecked(&concat_arr(
                A.as_ptr().cast().read(),
                B.as_ptr().cast().read(),
            ))
        };
    }

    Inner::<A, B>::ABSTR
}

const FOO: &str = "foo";
const BAR: &str = "bar";
const FOOBAR: &str = concat_strs::<FOO, BAR>();

original code

original:

#![feature(unsized_const_params)]
#![feature(adt_const_params, const_ptr_read, generic_const_exprs)]

use std::mem::ManuallyDrop;

const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
where
    [(); A.len()]:,
    [(); B.len()]:,
    [(); A.len() + B.len()]:,
{
    #[repr(C)]
    struct ConcatJoin<const N: usize, const M: usize> {
        left: [u8; N],
        right: [u8; M],
    }

    #[repr(C)]
    union ConcatJoiner<const N: usize, const M: usize>
    where
        [(); N + M]:,
    {
        whole: ManuallyDrop<[u8; N + M]>,
        split: ManuallyDrop<ConcatJoin<N, M>>,
    }

    const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N] {
        unsafe {
            let joiner = ConcatJoiner {
                split: ManuallyDrop::new(ConcatJoin { left: a, right: b }),
            };
            let join = joiner.whole;
            ManuallyDrop::into_inner(join)
        }
    }

    struct Inner<const A: &'static str, const B: &'static str>;
    impl<const A: &'static str, const B: &'static str> Inner<A, B>
    where
        [(); A.len()]:,
        [(); B.len()]:,
        [(); A.len() + B.len()]:,
    {
        const ABSTR: &'static str = unsafe {
            std::str::from_utf8_unchecked(&concat_arr(
                A.as_ptr().cast().read(),
                B.as_ptr().cast().read(),
            ))
        };
    }

    Inner::<A, B>::ABSTR
}

const FOO: &str = "foo";
const BAR: &str = "bar";
const FOOBAR: &str = concat_strs::<FOO, BAR>();

Version information

rustc 1.84.0-nightly (dae7ac133 2024-11-14)
binary: rustc
commit-hash: dae7ac133b9eda152784c075facb31a6688c92b1
commit-date: 2024-11-14
host: x86_64-unknown-linux-gnu
release: 1.84.0-nightly
LLVM version: 19.1.3

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:1:46
  |
1 | #![feature(adt_const_params, const_ptr_read, 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 `mvce`
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:34:48
   |
34 | const FOOBAR: &str = concat_strs::<FOO, BAR>();
   |                                                ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs`

error[E0517]: attribute should be applied to a struct, enum, or union
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:9:12
   |
9  |     #[repr(C)]
   |            ^
...
12 |     const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N] {}
   |     --------------------------------------------------------------------------------------------- not a struct, enum, or union

error[E0517]: attribute should be applied to a struct, enum, or union
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:10:12
   |
10 |     #[repr(C)]
   |            ^
11 |
12 |     const fn concat_arr<const M: usize, const N: usize>(a: [u8; M], b: [u8; N]) -> [u8; M + N] {}
   |     --------------------------------------------------------------------------------------------- not a struct, enum, or union

warning: the feature `const_ptr_read` has been stable since 1.71.0 and no longer requires an attribute to enable
 --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:1:30
  |
1 | #![feature(adt_const_params, const_ptr_read, generic_const_exprs)]
  |                              ^^^^^^^^^^^^^^
  |
  = note: `#[warn(stable_features)]` on by default

error[E0741]: `&'static str` can't be used as a const parameter type
 --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:3:31
  |
3 | const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
  |                               ^^^^^^^^^^^^

error[E0741]: `&'static str` can't be used as a const parameter type
 --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:3:54
  |
3 | const fn concat_strs<const A: &'static str, const B: &'static str>() -> &'static str
  |                                                      ^^^^^^^^^^^^

error[E0741]: `&'static str` can't be used as a const parameter type
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:14:27
   |
14 |     struct Inner<const A: &'static str, const B: &'static str>;
   |                           ^^^^^^^^^^^^

error[E0741]: `&'static str` can't be used as a const parameter type
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:14:50
   |
14 |     struct Inner<const A: &'static str, const B: &'static str>;
   |                                                  ^^^^^^^^^^^^

error[E0741]: `&'static str` can't be used as a const parameter type
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:15:19
   |
15 |     impl<const A: &'static str, const B: &'static str> Inner<A, B>
   |                   ^^^^^^^^^^^^

error[E0741]: `&'static str` can't be used as a const parameter type
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:15:42
   |
15 |     impl<const A: &'static str, const B: &'static str> Inner<A, B>
   |                                          ^^^^^^^^^^^^

warning: type annotations needed
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:23:35
   |
23 |                 A.as_ptr().cast().read(),
   |                                   ^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
   = note: for more information, see issue #46906 <https://github.com/rust-lang/rust/issues/46906>
   = note: `#[warn(tyvar_behind_raw_pointer)]` on by default

warning: type annotations needed
  --> /tmp/icemaker_global_tempdir.iuqByQrfz5jL/rustc_testrunner_tmpdir_reporting.SDTdkUk4Vc0a/mvce.rs:24:35
   |
24 |                 B.as_ptr().cast().read(),
   |                                   ^^^^
   |
   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
   = note: for more information, see issue #46906 <https://github.com/rust-lang/rust/issues/46906>

error: internal compiler error: /rustc/dae7ac133b9eda152784c075facb31a6688c92b1/compiler/rustc_middle/src/mir/consts.rs:329:25: Normalization of `ty::ConstKind::Expr` is unimplemented

thread 'rustc' panicked at /rustc/dae7ac133b9eda152784c075facb31a6688c92b1/compiler/rustc_middle/src/mir/consts.rs:329:25:
Box<dyn Any>
stack backtrace:
   0:     0x797098060e2a - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h0326228ddf29829f
   1:     0x79709880448a - core::fmt::write::h64d957f6c2411f92
   2:     0x797099c2ba91 - std::io::Write::write_fmt::hf76d6982f9e040f9
   3:     0x797098060c82 - std::sys::backtrace::BacktraceLock::print::h527aa5f4f2853fd7
   4:     0x797098063186 - std::panicking::default_hook::{{closure}}::h784a8d655f3ea3ba
   5:     0x797098062fd0 - std::panicking::default_hook::h74432acd085bbcae
   6:     0x7970970ea111 - std[7b46ba15e6836155]::panicking::update_hook::<alloc[98de7c120457b6b8]::boxed::Box<rustc_driver_impl[e3223cb9277a66be]::install_ice_hook::{closure#0}>>::{closure#0}
   7:     0x797098063898 - std::panicking::rust_panic_with_hook::h11fa623022ff3898
   8:     0x797097123ca1 - std[7b46ba15e6836155]::panicking::begin_panic::<rustc_errors[7141fd9760fe76b8]::ExplicitBug>::{closure#0}
   9:     0x797097116c76 - std[7b46ba15e6836155]::sys::backtrace::__rust_end_short_backtrace::<std[7b46ba15e6836155]::panicking::begin_panic<rustc_errors[7141fd9760fe76b8]::ExplicitBug>::{closure#0}, !>
  10:     0x797097116a03 - std[7b46ba15e6836155]::panicking::begin_panic::<rustc_errors[7141fd9760fe76b8]::ExplicitBug>
  11:     0x79709712d9b1 - <rustc_errors[7141fd9760fe76b8]::diagnostic::BugAbort as rustc_errors[7141fd9760fe76b8]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  12:     0x7970977ae563 - rustc_middle[718f3a24ace21c73]::util::bug::opt_span_bug_fmt::<rustc_span[6e39dd2eacb7e146]::span_encoding::Span>::{closure#0}
  13:     0x797097794daa - rustc_middle[718f3a24ace21c73]::ty::context::tls::with_opt::<rustc_middle[718f3a24ace21c73]::util::bug::opt_span_bug_fmt<rustc_span[6e39dd2eacb7e146]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  14:     0x797097794c3b - rustc_middle[718f3a24ace21c73]::ty::context::tls::with_context_opt::<rustc_middle[718f3a24ace21c73]::ty::context::tls::with_opt<rustc_middle[718f3a24ace21c73]::util::bug::opt_span_bug_fmt<rustc_span[6e39dd2eacb7e146]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  15:     0x797095afdb20 - rustc_middle[718f3a24ace21c73]::util::bug::bug_fmt
  16:     0x7970993b2395 - <rustc_const_eval[4c4ef20f97f27f90]::interpret::eval_context::InterpCx<rustc_const_eval[4c4ef20f97f27f90]::const_eval::machine::CompileTimeMachine>>::push_stack_frame_raw
  17:     0x7970993bb435 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::eval_queries::eval_to_allocation_raw_provider
  18:     0x7970993baef6 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  19:     0x7970993b5ecb - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  20:     0x7970993b5aaf - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  21:     0x79709937e726 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::valtrees::eval_to_valtree
  22:     0x79709937e549 - <rustc_const_eval[4c4ef20f97f27f90]::provide::{closure#0} as core[3ad726d5cba1884b]::ops::function::FnOnce<(rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt, rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>)>>::call_once
  23:     0x79709937e500 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_valtree::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  24:     0x79709937e4c1 - <rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_valtree::dynamic_query::{closure#2} as core[3ad726d5cba1884b]::ops::function::FnOnce<(rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt, rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>)>>::call_once
  25:     0x7970993b5f9f - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  26:     0x7970993b58c7 - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_valtree::get_query_non_incr::__rust_end_short_backtrace
  27:     0x79709926a30e - rustc_middle[718f3a24ace21c73]::query::plumbing::query_get_at::<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>>
  28:     0x797099269d97 - <rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>::const_eval_global_id_for_typeck
  29:     0x7970992695bc - <rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>::const_eval_resolve_for_typeck
  30:     0x797099269301 - rustc_trait_selection[ade120a59c9ca055]::traits::try_evaluate_const
  31:     0x7970992684f6 - <rustc_trait_selection[ade120a59c9ca055]::traits::query::normalize::QueryNormalizer as rustc_type_ir[b43b485fe23eb35c]::fold::FallibleTypeFolder<rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>>::try_fold_const
  32:     0x797098e90e21 - <rustc_trait_selection[ade120a59c9ca055]::traits::query::normalize::QueryNormalizer as rustc_type_ir[b43b485fe23eb35c]::fold::FallibleTypeFolder<rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>>::try_fold_ty
  33:     0x797098e90673 - <rustc_trait_selection[ade120a59c9ca055]::traits::query::normalize::QueryNormalizer as rustc_type_ir[b43b485fe23eb35c]::fold::FallibleTypeFolder<rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>>::try_fold_ty
  34:     0x797098e8ccd1 - <rustc_traits[6c6b9219dd2d98c9]::normalize_erasing_regions::provide::{closure#0} as core[3ad726d5cba1884b]::ops::function::FnOnce<(rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt, rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::ty::generic_args::GenericArg>)>>::call_once
  35:     0x797098e8c947 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::try_normalize_generic_arg_after_erasing_regions::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 8usize]>>
  36:     0x797098e8c059 - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::ty::generic_args::GenericArg>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  37:     0x797098e8bda0 - rustc_query_impl[8ecd2df6873dbce8]::query_impl::try_normalize_generic_arg_after_erasing_regions::get_query_non_incr::__rust_end_short_backtrace
  38:     0x797098e87efd - <rustc_middle[718f3a24ace21c73]::ty::normalize_erasing_regions::TryNormalizeAfterErasingRegionsFolder as rustc_type_ir[b43b485fe23eb35c]::fold::FallibleTypeFolder<rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>>::try_fold_ty
  39:     0x7970993b1d64 - <rustc_const_eval[4c4ef20f97f27f90]::interpret::eval_context::InterpCx<rustc_const_eval[4c4ef20f97f27f90]::const_eval::machine::CompileTimeMachine>>::push_stack_frame_raw
  40:     0x7970993bb435 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::eval_queries::eval_to_allocation_raw_provider
  41:     0x7970993baef6 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  42:     0x7970993b5ecb - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  43:     0x7970993b5aaf - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  44:     0x7970993b7115 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::eval_queries::eval_to_const_value_raw_provider
  45:     0x7970993b6f36 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  46:     0x7970993b5e8e - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  47:     0x7970993b59b1 - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  48:     0x797099276ce2 - <rustc_middle[718f3a24ace21c73]::ty::context::TyCtxt>::const_eval_resolve
  49:     0x7970992ae4e4 - <rustc_const_eval[4c4ef20f97f27f90]::interpret::eval_context::InterpCx<rustc_const_eval[4c4ef20f97f27f90]::const_eval::machine::CompileTimeMachine>>::init_stack_frame
  50:     0x7970992aacc4 - <rustc_const_eval[4c4ef20f97f27f90]::interpret::eval_context::InterpCx<rustc_const_eval[4c4ef20f97f27f90]::const_eval::machine::CompileTimeMachine>>::init_fn_call
  51:     0x7970993bcd57 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::eval_queries::eval_to_allocation_raw_provider
  52:     0x7970993baef6 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  53:     0x7970993b5ecb - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  54:     0x7970993b5aaf - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  55:     0x7970993b7115 - rustc_const_eval[4c4ef20f97f27f90]::const_eval::eval_queries::eval_to_const_value_raw_provider
  56:     0x7970993b6f36 - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>
  57:     0x7970993b5e8e - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::DefaultCache<rustc_middle[718f3a24ace21c73]::ty::ParamEnvAnd<rustc_middle[718f3a24ace21c73]::mir::interpret::GlobalId>, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  58:     0x7970993b59b1 - rustc_query_impl[8ecd2df6873dbce8]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  59:     0x797098cf8337 - <rustc_middle[718f3a24ace21c73]::hir::map::Map>::par_body_owners::<rustc_hir_analysis[62137f5816008ffb]::check_crate::{closure#3}>::{closure#0}
  60:     0x797098cf5cf1 - rustc_hir_analysis[62137f5816008ffb]::check_crate
  61:     0x797098d2024a - rustc_interface[5830f67c2b583706]::passes::run_required_analyses
  62:     0x797099637b1e - rustc_interface[5830f67c2b583706]::passes::analysis
  63:     0x797099637aef - rustc_query_impl[8ecd2df6873dbce8]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[8ecd2df6873dbce8]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 1usize]>>
  64:     0x7970997ce36e - rustc_query_system[c7eb5a30f78388e]::query::plumbing::try_execute_query::<rustc_query_impl[8ecd2df6873dbce8]::DynamicConfig<rustc_query_system[c7eb5a30f78388e]::query::caches::SingleCache<rustc_middle[718f3a24ace21c73]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[8ecd2df6873dbce8]::plumbing::QueryCtxt, false>
  65:     0x7970997ce04e - rustc_query_impl[8ecd2df6873dbce8]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  66:     0x7970996c9bfa - rustc_interface[5830f67c2b583706]::interface::run_compiler::<core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>, rustc_driver_impl[e3223cb9277a66be]::run_compiler::{closure#0}>::{closure#1}
  67:     0x7970997186d0 - std[7b46ba15e6836155]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[5830f67c2b583706]::util::run_in_thread_with_globals<rustc_interface[5830f67c2b583706]::util::run_in_thread_pool_with_globals<rustc_interface[5830f67c2b583706]::interface::run_compiler<core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>, rustc_driver_impl[e3223cb9277a66be]::run_compiler::{closure#0}>::{closure#1}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>::{closure#0}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>
  68:     0x797099718aeb - <<std[7b46ba15e6836155]::thread::Builder>::spawn_unchecked_<rustc_interface[5830f67c2b583706]::util::run_in_thread_with_globals<rustc_interface[5830f67c2b583706]::util::run_in_thread_pool_with_globals<rustc_interface[5830f67c2b583706]::interface::run_compiler<core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>, rustc_driver_impl[e3223cb9277a66be]::run_compiler::{closure#0}>::{closure#1}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>::{closure#0}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[3ad726d5cba1884b]::result::Result<(), rustc_span[6e39dd2eacb7e146]::ErrorGuaranteed>>::{closure#1} as core[3ad726d5cba1884b]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  69:     0x7970997195b9 - std::sys::pal::unix::thread::Thread::new::thread_start::h8cc9e4846fbebb95
  70:     0x79709af5f39d - <unknown>
  71:     0x79709afe449c - <unknown>
  72:                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 make sure that you have updated to the latest nightly

note: rustc 1.84.0-nightly (dae7ac133 2024-11-14) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `concat_strs::concat_arr::{constant#0}`
#1 [eval_to_valtree] evaluating type-level constant
end of query stack
error: aborting due to 10 previous errors; 4 warnings emitted

Some errors have detailed explanations: E0517, E0601, E0741.
For more information about an error, try `rustc --explain E0517`.