Skip to content

ICE: broken MIR in AsyncDropGlue( #142560

New issue
New issue
Open
Open
ICE: broken MIR in AsyncDropGlue(#142560
Labels
C-bugCategory: This is a bug.F-async_drop`#![feature(async_drop)]`I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.
@matthiaskrgr

Description

@matthiaskrgr
matthiaskrgr
opened on Jun 16, 2025

auto-reduced (treereduce-rust):

//@compile-flags: --edition=2024 -Zlint-mir
#![feature(async_drop)]

use std::{
    future::{async_drop_in_place, AsyncDrop, Future},
    pin::{pin, Pin},
    sync::{mpsc, Arc},
    task::{Context, Poll, Wake, Waker},
};

struct Foo {
    my_resource_handle: usize,
}

impl Foo {
    fn new(my_resource_handle: usize) -> Self {
        let out = Foo { my_resource_handle };

        out
    }
}

impl Drop for Foo {
    fn drop(&mut self) {}
}

impl AsyncDrop for Foo {
    async fn drop(self: Pin<&mut Self>) {}
}

fn main() {}

async fn bar(ident_base: usize) {
    let _vec: [Foo; 4] = [
        Foo::new(ident_base),
        Foo::new(ident_base + 1),
        Foo::new(ident_base + 2),
        Foo::new(ident_base + 3),
    ];
}
original code

original:

//@ run-pass
//@ check-run-results
// struct `Foo` has both sync and async drop.
// Struct `Complex` contains three `Foo` fields and has complex async drop glue.

#![feature(async_drop)]
#![allow(incomplete_features)]

use std::mem::ManuallyDrop;

//@ edition: 2021

#[inline(never)]
fn myprintln(msg: &str, my_resource_handle: usize) {
    println!("{} : {}", msg, my_resource_handle);
}

use std::{
    future::{Future, async_drop_in_place, AsyncDrop},
    pin::{pin, Pin},
    sync::{mpsc, Arc},
    task::{Context, Poll, Wake, Waker},
};

struct Foo {
    my_resource_handle: usize,
}

impl Foo {
    fn new(my_resource_handle: usize) -> Self {
        let out = Foo {
            my_resource_handle,
        };
        myprintln("{} : {}", my_resource_handle);
        out
    }
}

impl Drop for Foo {
    fn drop(&mut self) {
        myprintln("Foo::drop()", self.my_resource_handle);
    }
}

impl AsyncDrop for Foo {
    async fn drop(self: Pin<&mut Self>) {
        myprintln("Foo::async drop()", self.my_resource_handle);
    }
}

fn main() {
    {
        let _ = Foo::new(7);
    }
    println!("Middle");
    {
        block_on(bar(10));
    }
    println!("Done")
}

async fn bar(ident_base: usize) {
    let _vec: [Foo; 4] = [
        Foo::new(ident_base),
        Foo::new(ident_base + 1),
        Foo::new(ident_base + 2),
        Foo::new(ident_base + 3)
    ];
}

fn block_on<F>(fut_unpin: F) -> F::Output
where
    F: Future,
{
    let mut fut_pin = pin!(ManuallyDrop::new(fut_unpin));
    let mut fut: Pin<&mut F> = unsafe {
        Pin::map_unchecked_mut(fut_pin.as_mut(), |x| &mut **x)
    };
    let (waker, rx) = simple_waker();
    let mut context = Context::from_waker(&waker);
    let rv = loop {
        match fut.as_mut().poll(&mut context) {
            Poll::Ready(out) => break out,
            // expect wake in polls
            Poll::Pending => rx.try_recv().unwrap(),
        }
    };
    let drop_fut_unpin = unsafe { async_drop_in_place(fut.get_unchecked_mut()) };
    let mut drop_fut: Pin<&mut _> = pin!(drop_fut_unpin);
    loop {
        match drop_fut.as_mut().poll(&mut context) {
            Poll::Ready(()) => break,
            Poll::Pending => rx.try_recv().unwrap(),
        }
    }
    rv
}

fn simple_waker() -> (Waker, mpsc::Receiver<()>) {
    struct SimpleWaker {
        tx: std::sync::mpsc::Sender<()>,
    }

    impl Wake for SimpleWaker {
        fn wake(self: Arc<Self>) {
            self.tx.send(()).unwrap();
        }
    }

    let (tx, rx) = mpsc::channel();
    (Waker::from(Arc::new(SimpleWaker { tx })), rx)
}

Version information

rustc 1.89.0-nightly (e314b97ee 2025-06-16)
binary: rustc
commit-hash: e314b97ee54091b6bcf33db4770c93d82fded8bc
commit-date: 2025-06-16
host: x86_64-unknown-linux-gnu
release: 1.89.0-nightly
LLVM version: 20.1.5

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc --edition=2024 -Zlint-mir

Program output 

warning: the feature `async_drop` is incomplete and may not be safe to use and/or cause compiler crashes
 --> /tmp/icemaker_global_tempdir.bKTOtfhuUm9A/rustc_testrunner_tmpdir_reporting.BhA5t2N8nShp/mvce.rs:1:12
  |
1 | #![feature(async_drop)]
  |            ^^^^^^^^^^
  |
  = note: see issue #126482 <https://github.com/rust-lang/rust/issues/126482> for more information
  = note: `#[warn(incomplete_features)]` on by default

warning: unused imports: `Arc`, `Context`, `Future`, `Poll`, `Wake`, `Waker`, `async_drop_in_place`, `mpsc`, and `pin`
 --> /tmp/icemaker_global_tempdir.bKTOtfhuUm9A/rustc_testrunner_tmpdir_reporting.BhA5t2N8nShp/mvce.rs:4:14
  |
4 |     future::{async_drop_in_place, AsyncDrop, Future},
  |              ^^^^^^^^^^^^^^^^^^^             ^^^^^^
5 |     pin::{pin, Pin},
  |           ^^^
6 |     sync::{mpsc, Arc},
  |            ^^^^  ^^^
7 |     task::{Context, Poll, Wake, Waker},
  |            ^^^^^^^  ^^^^  ^^^^  ^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: field `my_resource_handle` is never read
  --> /tmp/icemaker_global_tempdir.bKTOtfhuUm9A/rustc_testrunner_tmpdir_reporting.BhA5t2N8nShp/mvce.rs:11:5
   |
10 | struct Foo {
   |        --- field in this struct
11 |     my_resource_handle: usize,
   |     ^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(dead_code)]` on by default

warning: associated function `new` is never used
  --> /tmp/icemaker_global_tempdir.bKTOtfhuUm9A/rustc_testrunner_tmpdir_reporting.BhA5t2N8nShp/mvce.rs:15:8
   |
14 | impl Foo {
   | -------- associated function in this implementation
15 |     fn new(my_resource_handle: usize) -> Self {
   |        ^^^

warning: function `bar` is never used
  --> /tmp/icemaker_global_tempdir.bKTOtfhuUm9A/rustc_testrunner_tmpdir_reporting.BhA5t2N8nShp/mvce.rs:32:10
   |
32 | async fn bar(ident_base: usize) {
   |          ^^^

warning: 5 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: broken MIR in AsyncDropGlue(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize], (), std::future::ResumeTy, (), (), CoroutineWitness(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize]]), (*mut [Foo; 4_usize],)])) (after pass MentionedItems) at bb12[2]:
                                StorageLive(_19) which already has storage here
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:96:26
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
         3: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         4: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         5: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_statement
         6: rustc_mir_transform::lint::lint_body
         7: rustc_mir_transform::pass_manager::run_passes_inner
         8: rustc_mir_transform::shim::make_shim
         9: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        10: <rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_middle::ty::instance::InstanceKind)>>::call_once
        11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::instance::InstanceKind, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        12: rustc_query_impl::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
        13: <rustc_middle::ty::context::TyCtxt>::coroutine_layout
        14: rustc_ty_utils::layout::layout_of_uncached
        15: rustc_ty_utils::layout::layout_of
        16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        18: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        19: rustc_ty_utils::layout::layout_of_uncached
        20: rustc_ty_utils::layout::layout_of
        21: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        22: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        23: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        24: rustc_ty_utils::layout::layout_of_uncached
        25: rustc_ty_utils::layout::layout_of
        26: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        27: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        28: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        29: rustc_ty_utils::layout::layout_of
        30: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        31: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        32: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        33: <rustc_middle::ty::layout::LayoutCx as rustc_middle::ty::layout::LayoutOf>::spanned_layout_of
        34: <core::iter::adapters::GenericShunt<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>> as core::iter::traits::iterator::Iterator>::next
        35: core::iter::adapters::try_process::<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>, <core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}> as core::iter::traits::iterator::Iterator>::try_collect<rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>::{closure#0}, rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>
        36: rustc_ty_utils::layout::layout_of_uncached
        37: rustc_ty_utils::layout::layout_of
        38: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        39: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        40: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        41: <rustc_mir_transform::known_panics_lint::KnownPanicsLint as rustc_mir_transform::pass_manager::MirLint>::run_lint
        42: rustc_mir_transform::run_analysis_to_runtime_passes
        43: rustc_mir_transform::mir_drops_elaborated_and_const_checked
        44: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        45: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_data_structures::vec_cache::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        46: rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
        47: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
        48: rustc_interface::passes::analysis
        49: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 0]>>
        50: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        51: rustc_query_impl::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
        52: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
        53: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        54: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        55: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        56: std::sys::pal::unix::thread::Thread::new::thread_start
        57: <unknown>
        58: <unknown>
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^

error: internal compiler error: broken MIR in AsyncDropGlue(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize], (), std::future::ResumeTy, (), (), CoroutineWitness(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize]]), (*mut [Foo; 4_usize],)])) (after pass MentionedItems) at bb8[2]:
                                StorageLive(_12) which already has storage here
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:96:26
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
         3: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         4: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         5: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_statement
         6: rustc_mir_transform::lint::lint_body
         7: rustc_mir_transform::pass_manager::run_passes_inner
         8: rustc_mir_transform::shim::make_shim
         9: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        10: <rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_middle::ty::instance::InstanceKind)>>::call_once
        11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::instance::InstanceKind, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        12: rustc_query_impl::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
        13: <rustc_middle::ty::context::TyCtxt>::coroutine_layout
        14: rustc_ty_utils::layout::layout_of_uncached
        15: rustc_ty_utils::layout::layout_of
        16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        18: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        19: rustc_ty_utils::layout::layout_of_uncached
        20: rustc_ty_utils::layout::layout_of
        21: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        22: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        23: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        24: rustc_ty_utils::layout::layout_of_uncached
        25: rustc_ty_utils::layout::layout_of
        26: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        27: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        28: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        29: rustc_ty_utils::layout::layout_of
        30: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        31: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        32: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        33: <rustc_middle::ty::layout::LayoutCx as rustc_middle::ty::layout::LayoutOf>::spanned_layout_of
        34: <core::iter::adapters::GenericShunt<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>> as core::iter::traits::iterator::Iterator>::next
        35: core::iter::adapters::try_process::<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>, <core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}> as core::iter::traits::iterator::Iterator>::try_collect<rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>::{closure#0}, rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>
        36: rustc_ty_utils::layout::layout_of_uncached
        37: rustc_ty_utils::layout::layout_of
        38: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        39: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        40: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        41: <rustc_mir_transform::known_panics_lint::KnownPanicsLint as rustc_mir_transform::pass_manager::MirLint>::run_lint
        42: rustc_mir_transform::run_analysis_to_runtime_passes
        43: rustc_mir_transform::mir_drops_elaborated_and_const_checked
        44: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        45: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_data_structures::vec_cache::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        46: rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
        47: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
        48: rustc_interface::passes::analysis
        49: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 0]>>
        50: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        51: rustc_query_impl::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
        52: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
        53: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        54: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        55: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        56: std::sys::pal::unix::thread::Thread::new::thread_start
        57: <unknown>
        58: <unknown>
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^

error: internal compiler error: broken MIR in AsyncDropGlue(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize], (), std::future::ResumeTy, (), (), CoroutineWitness(DefId(2:15416 ~ core[0a08]::future::async_drop::async_drop_in_place::{closure#0}), [[Foo; 4_usize]]), (*mut [Foo; 4_usize],)])) (after pass AbortUnwindingCalls) at bb12[2]:
                                StorageLive(_19) which already has storage here
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^
   |
note: delayed at compiler/rustc_mir_transform/src/lint.rs:96:26
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         1: <rustc_errors::DiagCtxtHandle>::emit_diagnostic
         2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
         3: <rustc_errors::DiagCtxtHandle>::span_delayed_bug::<rustc_span::span_encoding::Span, alloc::string::String>
         4: <rustc_mir_transform::lint::Lint>::fail::<alloc::string::String>
         5: <rustc_mir_transform::lint::Lint as rustc_middle::mir::visit::Visitor>::visit_statement
         6: rustc_mir_transform::lint::lint_body
         7: rustc_mir_transform::pass_manager::run_passes_inner
         8: rustc_mir_transform::shim::make_shim
         9: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        10: <rustc_query_impl::query_impl::mir_shims::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_middle::ty::instance::InstanceKind)>>::call_once
        11: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::instance::InstanceKind, rustc_middle::query::erase::Erased<[u8; 8]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        12: rustc_query_impl::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
        13: <rustc_middle::ty::context::TyCtxt>::coroutine_layout
        14: rustc_ty_utils::layout::layout_of_uncached
        15: rustc_ty_utils::layout::layout_of
        16: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        17: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        18: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        19: rustc_ty_utils::layout::layout_of_uncached
        20: rustc_ty_utils::layout::layout_of
        21: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        22: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        23: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        24: rustc_ty_utils::layout::layout_of_uncached
        25: rustc_ty_utils::layout::layout_of
        26: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        27: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        28: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        29: rustc_ty_utils::layout::layout_of
        30: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        31: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        32: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        33: <rustc_middle::ty::layout::LayoutCx as rustc_middle::ty::layout::LayoutOf>::spanned_layout_of
        34: <core::iter::adapters::GenericShunt<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>> as core::iter::traits::iterator::Iterator>::next
        35: core::iter::adapters::try_process::<core::iter::adapters::by_ref_sized::ByRefSized<core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}>>, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>, core::result::Result<core::convert::Infallible, &rustc_middle::ty::layout::LayoutError>, <core::iter::adapters::map::Map<core::slice::iter::Iter<rustc_middle::mir::query::CoroutineSavedTy>, rustc_ty_utils::layout::layout_of_uncached::{closure#12}> as core::iter::traits::iterator::Iterator>::try_collect<rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>::{closure#0}, rustc_index::vec::IndexVec<rustc_middle::mir::query::CoroutineSavedLocal, rustc_abi::layout::ty::TyAndLayout<rustc_middle::ty::Ty>>>
        36: rustc_ty_utils::layout::layout_of_uncached
        37: rustc_ty_utils::layout::layout_of
        38: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        39: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_middle::ty::PseudoCanonicalInput<rustc_middle::ty::Ty>, rustc_middle::query::erase::Erased<[u8; 16]>>, false, true, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        40: rustc_query_impl::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
        41: <rustc_mir_transform::known_panics_lint::KnownPanicsLint as rustc_mir_transform::pass_manager::MirLint>::run_lint
        42: rustc_mir_transform::run_analysis_to_runtime_passes
        43: rustc_mir_transform::mir_drops_elaborated_and_const_checked
        44: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 8]>>
        45: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_data_structures::vec_cache::VecCache<rustc_span::def_id::LocalDefId, rustc_middle::query::erase::Erased<[u8; 8]>, rustc_query_system::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        46: rustc_query_impl::query_impl::mir_drops_elaborated_and_const_checked::get_query_non_incr::__rust_end_short_backtrace
        47: <rustc_middle::ty::context::TyCtxt>::par_hir_body_owners::<rustc_interface::passes::run_required_analyses::{closure#1}::{closure#0}>::{closure#0}
        48: rustc_interface::passes::analysis
        49: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 0]>>
        50: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        51: rustc_query_impl::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
        52: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
        53: rustc_interface::interface::run_compiler::<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}
        54: std::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
        55: <<std::thread::Builder>::spawn_unchecked_<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        56: std::sys::pal::unix::thread::Thread::new::thread_start
        57: <unknown>
        58: <unknown>
  --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:46:70
   |
46 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
49 | | }
   | |_^


<snip>


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 1.89.0-nightly (e314b97ee 2025-06-16) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z lint-mir -Z dump-mir-dir=dir

query stack during panic:
end of query stack

@rustbot label +F-async_drop

Metadata

Metadata

Assignees

No one assigned

    Labels

    C-bugCategory: This is a bug.F-async_drop`#![feature(async_drop)]`I-ICEIssue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️T-compilerRelevant to the compiler team, which will review and decide on the PR/issue.needs-triageThis issue may need triage. Remove it if it has been sufficiently triaged.

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions