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Compiler panic on recursion limit finding the struct tail #114484

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#135464
Closed
Compiler panic on recursion limit finding the struct tail#114484
#135464
Labels
C-bugCategory: This is a bug.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.
@Rexagon

Description

@Rexagon
Rexagon
opened on Aug 4, 2023

Code

https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=bcc54139b4a6e66d29216bd7ae3c5122

use std::marker::PhantomData;

trait MyTrait {
    fn virtualize(&self) -> &dyn MyTrait;
}

struct VirtualWrapper<T, const L: u8>(T);

impl<T, const L: u8> VirtualWrapper<T, L> {
    pub fn wrap(value: &T) -> &Self {
        unsafe { &*(value as *const T as *const Self) }
    }
}

impl<T: MyTrait + 'static, const L: u8> MyTrait for VirtualWrapper<T, L> {
    fn virtualize(&self) -> &dyn MyTrait {
        unsafe { virtualize_my_trait(L, self) }
        // unsafe { virtualize_my_trait(L, &self.0) }    // <-- this code fixes the problem
    }
}

const unsafe fn virtualize_my_trait<T>(level: u8, obj: &T) -> &dyn MyTrait
where
    T: MyTrait + 'static,
{
    const fn gen_vtable_ptr<T, const L: u8>() -> *const ()
    where
        T: MyTrait + 'static,
    {
        let [_, vtable] = unsafe {
            std::mem::transmute::<*const dyn MyTrait, [*const (); 2]>(std::ptr::null::<
                VirtualWrapper<T, L>,
            >())
        };
        vtable
    }

    struct Vtable<T>(PhantomData<T>);

    impl<T> Vtable<T>
    where
        T: MyTrait + 'static,
    {
        const LEVELS: [*const (); 2] = [gen_vtable_ptr::<T, 1>(), gen_vtable_ptr::<T, 2>()];
    }

    let vtable = Vtable::<T>::LEVELS[(level != 0) as usize];

    let data = obj as *const T as *const ();
    let ptr: *const dyn MyTrait = std::mem::transmute([data, vtable]);

    &*ptr
}

struct SomeData<const N: usize>([u8; N]);

impl<const N: usize> MyTrait for SomeData<N> {
    fn virtualize(&self) -> &dyn MyTrait {
        VirtualWrapper::<Self, 0>::wrap(self)
    }
}

fn main() {
    let test = SomeData([0; 256]);
    test.virtualize();
}

Meta

rustc --version --verbose:

rustc 1.71.1 (eb26296b5 2023-08-03) running on x86_64-unknown-linux-gnu

Error output

error: reached the recursion limit finding the struct tail for `[u8; 256]`
  |
  = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]`

error: internal compiler error: compiler/rustc_monomorphize/src/collector.rs:799:54: collection encountered polymorphic constant: Unevaluated(UnevaluatedConst { def: DefId(0:31 ~ playground[07cd]::virtualize_my_trait::{impl#0}::LEVELS), substs: [VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<VirtualWrapper<SomeData<256>, 0>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>, 1>], promoted: None }, [*const (); 2])
  --> src/main.rs:46:18
   |
46 |     let vtable = Vtable::<T>::LEVELS[(level != 0) as usize];
   |                  ^^^^^^^^^^^^^^^^^^^

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/compiler/rustc_errors/src/lib.rs:995:33
Backtrace 

stack backtrace:
   0:     0x7f3ea2449071 - std::backtrace_rs::backtrace::libunwind::trace::h782cc21a5acaf6cb
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f3ea2449071 - std::backtrace_rs::backtrace::trace_unsynchronized::hc579eb24ab204515
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f3ea2449071 - std::sys_common::backtrace::_print_fmt::h7223525cfdbacda2
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f3ea2449071 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbd7d55b7108d2ab8
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f3ea24a8d9f - core::fmt::rt::Argument::fmt::hb4f4a02b9bd9dd49
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/core/src/fmt/rt.rs:138:9
   5:     0x7f3ea24a8d9f - core::fmt::write::h6d54cd7c9e155ec5
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f3ea243c311 - std::io::Write::write_fmt::h6a453a71c692f63b
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/io/mod.rs:1713:15
   7:     0x7f3ea2448e85 - std::sys_common::backtrace::_print::h1cbaa8b42678f928
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f3ea2448e85 - std::sys_common::backtrace::print::h4ddf81241a51b337
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f3ea244bb47 - std::panicking::default_hook::{{closure}}::hff91f1f484ade5cd
  10:     0x7f3ea244b934 - std::panicking::default_hook::h21f14afd59f7aef9
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/panicking.rs:288:9
  11:     0x7f3ea55d60cb - <rustc_driver_impl[a4629e012e48ffc1]::install_ice_hook::{closure#0} as core[95ee2d8017598cc7]::ops::function::FnOnce<(&core[95ee2d8017598cc7]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7f3ea244c28d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha1f76bdae3c27ab6
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/alloc/src/boxed.rs:1999:9
  13:     0x7f3ea244c28d - std::panicking::rust_panic_with_hook::h45f66047b14c555c
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/panicking.rs:709:13
  14:     0x7f3ea5d6d811 - std[edecf719d62c0e6b]::panicking::begin_panic::<rustc_errors[f0469ee7e5c3d3ff]::ExplicitBug>::{closure#0}
  15:     0x7f3ea5d6d696 - std[edecf719d62c0e6b]::sys_common::backtrace::__rust_end_short_backtrace::<std[edecf719d62c0e6b]::panicking::begin_panic<rustc_errors[f0469ee7e5c3d3ff]::ExplicitBug>::{closure#0}, !>
  16:     0x7f3ea5d5d606 - std[edecf719d62c0e6b]::panicking::begin_panic::<rustc_errors[f0469ee7e5c3d3ff]::ExplicitBug>
  17:     0x7f3ea5d5d252 - <rustc_errors[f0469ee7e5c3d3ff]::HandlerInner>::span_bug::<rustc_span[c2ff3b0962b898e5]::span_encoding::Span, alloc[dfb0c3e97fe8b89b]::string::String>
  18:     0x7f3ea5d5d0e6 - <rustc_errors[f0469ee7e5c3d3ff]::Handler>::span_bug::<rustc_span[c2ff3b0962b898e5]::span_encoding::Span, alloc[dfb0c3e97fe8b89b]::string::String>
  19:     0x7f3ea5d5d916 - rustc_middle[c682e143f9d710c7]::util::bug::opt_span_bug_fmt::<rustc_span[c2ff3b0962b898e5]::span_encoding::Span>::{closure#0}
  20:     0x7f3ea5d5d94a - rustc_middle[c682e143f9d710c7]::ty::context::tls::with_opt::<rustc_middle[c682e143f9d710c7]::util::bug::opt_span_bug_fmt<rustc_span[c2ff3b0962b898e5]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7f3ea5d5d6ea - rustc_middle[c682e143f9d710c7]::ty::context::tls::with_context_opt::<rustc_middle[c682e143f9d710c7]::ty::context::tls::with_opt<rustc_middle[c682e143f9d710c7]::util::bug::opt_span_bug_fmt<rustc_span[c2ff3b0962b898e5]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7f3ea5d5d694 - rustc_middle[c682e143f9d710c7]::util::bug::span_bug_fmt::<rustc_span[c2ff3b0962b898e5]::span_encoding::Span>
  23:     0x7f3ea44bd6a1 - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_neighbours
  24:     0x7f3ea44ab519 - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  25:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  26:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  27:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  28:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  29:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  30:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  31:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  32:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  33:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  34:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  35:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  36:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  37:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  38:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  39:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  40:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  41:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  42:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  43:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  44:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  45:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  46:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  47:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  48:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  49:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  50:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  51:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  52:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  53:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  54:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  55:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  56:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  57:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  58:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  59:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  60:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  61:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  62:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  63:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  64:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  65:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  66:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  67:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  68:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  69:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  70:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  71:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  72:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  73:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  74:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  75:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  76:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  77:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  78:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  79:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  80:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  81:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  82:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  83:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  84:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  85:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  86:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  87:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  88:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  89:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  90:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  91:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  92:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  93:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  94:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  95:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  96:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  97:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  98:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
  99:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 100:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 101:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 102:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 103:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 104:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 105:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 106:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 107:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 108:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 109:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 110:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 111:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 112:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 113:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 114:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
 115:     0x7f3ea44ab96a - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_items_rec
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 280:     0x7f3ea4999ce7 - rustc_data_structures[8548742d45a93e9b]::sync::par_for_each_in::<alloc[dfb0c3e97fe8b89b]::vec::Vec<rustc_middle[c682e143f9d710c7]::mir::mono::MonoItem>, rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
 281:     0x7f3ea49999a0 - <rustc_session[b7d9e6f930bc0bce]::session::Session>::time::<(), rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_crate_mono_items::{closure#1}>
 282:     0x7f3ea49995c0 - rustc_monomorphize[9472dad9f96b1e7f]::collector::collect_crate_mono_items
 283:     0x7f3ea49979a7 - rustc_monomorphize[9472dad9f96b1e7f]::partitioning::collect_and_partition_mono_items
 284:     0x7f3ea4be45b9 - rustc_query_impl[6e478c483b869c25]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[6e478c483b869c25]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c682e143f9d710c7]::query::erase::Erased<[u8; 24usize]>>
 285:     0x7f3ea4be458b - <rustc_query_impl[6e478c483b869c25]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core[95ee2d8017598cc7]::ops::function::FnOnce<(rustc_middle[c682e143f9d710c7]::ty::context::TyCtxt, ())>>::call_once
 286:     0x7f3ea4d77f3c - rustc_query_system[93b6edfdc601e81a]::query::plumbing::try_execute_query::<rustc_query_impl[6e478c483b869c25]::DynamicConfig<rustc_query_system[93b6edfdc601e81a]::query::caches::SingleCache<rustc_middle[c682e143f9d710c7]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[6e478c483b869c25]::plumbing::QueryCtxt, false>
 287:     0x7f3ea4d77cd4 - rustc_query_impl[6e478c483b869c25]::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
 288:     0x7f3ea4c1b769 - rustc_codegen_ssa[b3c509f34a4358db]::base::codegen_crate::<rustc_codegen_llvm[6b638aae027b3fd2]::LlvmCodegenBackend>
 289:     0x7f3ea4c1b54b - <rustc_codegen_llvm[6b638aae027b3fd2]::LlvmCodegenBackend as rustc_codegen_ssa[b3c509f34a4358db]::traits::backend::CodegenBackend>::codegen_crate
 290:     0x7f3ea48350a2 - <rustc_session[b7d9e6f930bc0bce]::session::Session>::time::<alloc[dfb0c3e97fe8b89b]::boxed::Box<dyn core[95ee2d8017598cc7]::any::Any>, rustc_interface[c65fde630b50e8]::passes::start_codegen::{closure#0}>
 291:     0x7f3ea4834beb - rustc_interface[c65fde630b50e8]::passes::start_codegen
 292:     0x7f3ea4832cdd - <rustc_middle[c682e143f9d710c7]::ty::context::GlobalCtxt>::enter::<<rustc_interface[c65fde630b50e8]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[95ee2d8017598cc7]::result::Result<alloc[dfb0c3e97fe8b89b]::boxed::Box<dyn core[95ee2d8017598cc7]::any::Any>, rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>
 293:     0x7f3ea4830e8d - <rustc_interface[c65fde630b50e8]::queries::Queries>::ongoing_codegen
 294:     0x7f3ea48304a9 - <rustc_interface[c65fde630b50e8]::interface::Compiler>::enter::<rustc_driver_impl[a4629e012e48ffc1]::run_compiler::{closure#1}::{closure#2}, core[95ee2d8017598cc7]::result::Result<core[95ee2d8017598cc7]::option::Option<rustc_interface[c65fde630b50e8]::queries::Linker>, rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>
 295:     0x7f3ea482e5c4 - rustc_span[c2ff3b0962b898e5]::set_source_map::<core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>, rustc_interface[c65fde630b50e8]::interface::run_compiler<core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>, rustc_driver_impl[a4629e012e48ffc1]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
 296:     0x7f3ea482e1a1 - <scoped_tls[24938f349c8d16f0]::ScopedKey<rustc_span[c2ff3b0962b898e5]::SessionGlobals>>::set::<rustc_interface[c65fde630b50e8]::interface::run_compiler<core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>, rustc_driver_impl[a4629e012e48ffc1]::run_compiler::{closure#1}>::{closure#0}, core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>
 297:     0x7f3ea482d796 - std[edecf719d62c0e6b]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[c65fde630b50e8]::util::run_in_thread_pool_with_globals<rustc_interface[c65fde630b50e8]::interface::run_compiler<core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>, rustc_driver_impl[a4629e012e48ffc1]::run_compiler::{closure#1}>::{closure#0}, core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>
 298:     0x7f3ea4e854c5 - <<std[edecf719d62c0e6b]::thread::Builder>::spawn_unchecked_<rustc_interface[c65fde630b50e8]::util::run_in_thread_pool_with_globals<rustc_interface[c65fde630b50e8]::interface::run_compiler<core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>, rustc_driver_impl[a4629e012e48ffc1]::run_compiler::{closure#1}>::{closure#0}, core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[95ee2d8017598cc7]::result::Result<(), rustc_span[c2ff3b0962b898e5]::ErrorGuaranteed>>::{closure#1} as core[95ee2d8017598cc7]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
 299:     0x7f3ea24567b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he3e5dbdfabe0b668
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/alloc/src/boxed.rs:1985:9
 300:     0x7f3ea24567b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h246f7c7964633611
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/alloc/src/boxed.rs:1985:9
 301:     0x7f3ea24567b5 - std::sys::unix::thread::Thread::new::thread_start::hadf9e3501ff0df23
                               at /rustc/eb26296b556cef10fb713a38f3d16b9886080f26/library/std/src/sys/unix/thread.rs:108:17
 302:     0x7f3ea2326609 - start_thread
 303:     0x7f3ea2249133 - clone
 304:                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 1.71.1 (eb26296b5 2023-08-03) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type bin -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2

note: some of the compiler flags provided by cargo are hidden

query stack during panic:
#0 [collect_and_partition_mono_items] collect_and_partition_mono_items
end of query stack
error: could not compile `playground` (bin "playground") due to previous error

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    C-bugCategory: This is a bug.I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️S-bug-has-testStatus: This bug is tracked inside the repo by a `known-bug` test.T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.

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