ICE in `(25cdf1f67 2025-04-28)` #140423

Wyvern · 2025-04-29T02:12:11Z

error: internal compiler error: compiler/rustc_mir_transform/src/elaborate_drop.rs:1254:18: open drop from non-ADT `T/#0`
  --> /rustc/25cdf1f67463c9365d8d83778c933ec7480e940b/library/core/src/future/async_drop.rs:48:70
   |
48 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
51 | | }
   | |_^


thread 'rustc' panicked at compiler/rustc_mir_transform/src/elaborate_drop.rs:1254:18:
Box<dyn Any>
note: run with `RUST_BACKTRACE=1` environment variable to display a 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 1.88.0-nightly (25cdf1f67 2025-04-28) running on aarch64-apple-darwin

note: compiler flags: --crate-type rlib -C opt-level=3 -C panic=abort -C linker-plugin-lto -C codegen-units=1 -Z unstable-options -Z remap-path-scope=all -Z force-unstable-if-unmarked -Z cross-crate-inline-threshold=yes -C rpath -C strip=debuginfo -Z force-unstable-if-unmarked -C target-feature=-crt-static -C symbol-mangling-version=hashed -C overflow-checks=no -C force-frame-pointers=no -C force-unwind-tables=no -C opt-level=s -C no-redzone -C debuginfo=0 -C strip=symbols -C collapse-macro-debuginfo=y -C panic=abort -Z unstable-options -Z export-executable-symbols -Z no-profiler-runtime -Z location-detail=none -Z plt -Z thinlto -Z dylib-lto -Z no-generate-arange-section -Z dep-info-omit-d-target -Z polonius=next -Z trim-diagnostic-paths -Z oom=abort -Z share-generics -Z merge-functions=aliases -Z inline-mir -Z inline-mir-preserve-debug=n -Z mir-opt-level=4 -Z packed-bundled-libs -Z maximal-hir-to-mir-coverage -Z terminal-urls -Z threads=0 -Z staticlib-allow-rdylib-deps -Z staticlib-prefer-dynamic -Z next-solver=coherence -Z panic-in-drop=abort -Z use-sync-unwind -Z graphviz-dark-mode -Z shell-argfiles -Z checksum-hash-algorithm=blake3 -Z trap-unreachable=no -Z mir-strip-debuginfo=all-locals -Z typing-mode-borrowck=y -Z experimental-default-bounds=y -C target-cpu=apple-m1 -Z tune-cpu=apple-m1 -C link-self-contained=+linker -Z linker-features=+lld -C link-arg=-Wl,--icf=all -C link-arg=-Wl,-no_uuid -C link-arg=-Wl,-S -C link-arg=-Wl,-dead_strip -C link-arg=-Wl,-dead_strip_dylibs -C link-arg=-Wl,-undefined,dynamic_lookup -Z binary-dep-depinfo -Z checksum-hash-algorithm=blake3

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

query stack during panic:
#0 [mir_shims] generating MIR shim for `future::async_drop::async_drop_in_place::{closure#0}`, instance=AsyncDropGlue(DefId(0:15202 ~ core[46f5]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(0:15202 ~ core[46f5]::future::async_drop::async_drop_in_place::{closure#0}), [T/#0, (), future::ResumeTy, (), (), CoroutineWitness(DefId(0:15202 ~ core[46f5]::future::async_drop::async_drop_in_place::{closure#0}), [T/#0]), (*mut T/#0,)]))
#1 [layout_of] computing layout of `{async fn body of future::async_drop::async_drop_in_place<T>()}`
... and 1 other queries... use `env RUST_BACKTRACE=1` to see the full query stack
error: could not compile `core` (lib)

The text was updated successfully, but these errors were encountered:

jieyouxu · 2025-04-29T11:05:06Z

Do you happen to have a complete reproducer?

Houtamelo · 2025-04-30T11:03:24Z

I also ran into this issue and could not reproduce it after reverting c366756

jieyouxu · 2025-04-30T11:06:14Z

Well yes, that PR definitely introduces this, it's just hard to come up with a regression test / root cause this without a complete reproducer and only based on an ICE backtrace.

jieyouxu · 2025-05-09T15:19:38Z

FYI @azhogin, unfortunately we don't have a smaller repro

antoyo · 2025-05-09T16:38:03Z

I don't know if this is small enough, but I created a reproducer here.
You can see the result in the CI here.

It seems necessary to set -Zmir-opt-level=3 to trigger this ICE.

I hope this helps.

matthiaskrgr · 2025-05-09T18:48:43Z

ez

//@compile-flags --edition=2021 -Zmir-enable-passes=+DataflowConstProp
#![feature(async_drop)]
use std::mem::ManuallyDrop;
use std::{
    future::async_drop_in_place,
    pin::{pin, Pin},
};
fn main() {
    a(b)
}
fn b() {}
fn a<c>(d: c) {
    let e = pin!(ManuallyDrop::new(d));
    let f = unsafe { Pin::map_unchecked_mut(e, |g| &mut **g) };
    let h = unsafe { async_drop_in_place(f.get_unchecked_mut()) };
    h;
}

error: internal compiler error: compiler/rustc_mir_transform/src/elaborate_drop.rs:1254:18: open drop from non-ADT `c/#0`
  --> /home/matthias/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/future/async_drop.rs:48:70
   |
48 |   pub async unsafe fn async_drop_in_place<T: ?Sized>(_to_drop: *mut T) {
   |  ______________________________________________________________________^
...  |
51 | | }
   | |_^


thread 'rustc' panicked at compiler/rustc_mir_transform/src/elaborate_drop.rs:1254:18:
Box<dyn Any>
stack backtrace:
   0:     0x784e5c763923 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h35b8f72326f85230
   1:     0x784e5ce05c07 - core::fmt::write::h73f5af0fa08ac030
   2:     0x784e5dee42d1 - std::io::Write::write_fmt::h0140e0dae4becf43
   3:     0x784e5c763782 - std::sys::backtrace::BacktraceLock::print::h2c50f8265df4edf7
   4:     0x784e5c76737a - std::panicking::default_hook::{{closure}}::h4f831a137f70e67f
   5:     0x784e5c766eff - std::panicking::default_hook::h47af645a18677257
   6:     0x784e5b795ef3 - std[e444442488e5ea2d]::panicking::update_hook::<alloc[24374ce535a764d]::boxed::Box<rustc_driver_impl[d80da60e87609ad4]::install_ice_hook::{closure#1}>>::{closure#0}
   7:     0x784e5c767bf3 - std::panicking::rust_panic_with_hook::h2b8636e09e17cf97
   8:     0x784e5b7d1c81 - std[e444442488e5ea2d]::panicking::begin_panic::<rustc_errors[3eead5a99742680e]::ExplicitBug>::{closure#0}
   9:     0x784e5b7c5cb6 - std[e444442488e5ea2d]::sys::backtrace::__rust_end_short_backtrace::<std[e444442488e5ea2d]::panicking::begin_panic<rustc_errors[3eead5a99742680e]::ExplicitBug>::{closure#0}, !>
  10:     0x784e5b7c5b43 - std[e444442488e5ea2d]::panicking::begin_panic::<rustc_errors[3eead5a99742680e]::ExplicitBug>
  11:     0x784e5b7dc421 - <rustc_errors[3eead5a99742680e]::diagnostic::BugAbort as rustc_errors[3eead5a99742680e]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  12:     0x784e5bdabc0c - <rustc_errors[3eead5a99742680e]::DiagCtxtHandle>::span_bug::<rustc_span[e6282e50b7a97c05]::span_encoding::Span, alloc[24374ce535a764d]::string::String>
  13:     0x784e5be49d47 - rustc_middle[dca19e53efad7b1b]::util::bug::opt_span_bug_fmt::<rustc_span[e6282e50b7a97c05]::span_encoding::Span>::{closure#0}
  14:     0x784e5be223ea - rustc_middle[dca19e53efad7b1b]::ty::context::tls::with_opt::<rustc_middle[dca19e53efad7b1b]::util::bug::opt_span_bug_fmt<rustc_span[e6282e50b7a97c05]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  15:     0x784e5be2225b - rustc_middle[dca19e53efad7b1b]::ty::context::tls::with_context_opt::<rustc_middle[dca19e53efad7b1b]::ty::context::tls::with_opt<rustc_middle[dca19e53efad7b1b]::util::bug::opt_span_bug_fmt<rustc_span[e6282e50b7a97c05]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  16:     0x784e5a24ce57 - rustc_middle[dca19e53efad7b1b]::util::bug::span_bug_fmt::<rustc_span[e6282e50b7a97c05]::span_encoding::Span>
  17:     0x784e5d5c0d64 - <rustc_mir_transform[c6aefdac698137fa]::elaborate_drop::DropCtxt<rustc_mir_transform[c6aefdac698137fa]::shim::DropShimElaborator>>::elaborate_drop
  18:     0x784e5d5ba9a1 - rustc_mir_transform[c6aefdac698137fa]::shim::make_shim
  19:     0x784e5d5b8a2f - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::mir_shims::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 8usize]>>
  20:     0x784e5d5b89e3 - <rustc_query_impl[d196c070bbe03594]::query_impl::mir_shims::dynamic_query::{closure#2} as core[ce1fa00964895ff1]::ops::function::FnOnce<(rustc_middle[dca19e53efad7b1b]::ty::context::TyCtxt, rustc_middle[dca19e53efad7b1b]::ty::instance::InstanceKind)>>::call_once
  21:     0x784e5d5a68c8 - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::DefaultCache<rustc_middle[dca19e53efad7b1b]::ty::instance::InstanceKind, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  22:     0x784e5d5a65e6 - rustc_query_impl[d196c070bbe03594]::query_impl::mir_shims::get_query_non_incr::__rust_end_short_backtrace
  23:     0x784e5be46bb9 - <rustc_middle[dca19e53efad7b1b]::ty::context::TyCtxt>::coroutine_layout
  24:     0x784e5d4c0bc5 - rustc_ty_utils[76373251995fa178]::layout::layout_of_uncached
  25:     0x784e5d4b3b8e - rustc_ty_utils[76373251995fa178]::layout::layout_of
  26:     0x784e5d4b3aec - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 16usize]>>
  27:     0x784e5d4b290f - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::DefaultCache<rustc_middle[dca19e53efad7b1b]::ty::PseudoCanonicalInput<rustc_middle[dca19e53efad7b1b]::ty::Ty>, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 16usize]>>, false, true, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  28:     0x784e5d4b2565 - rustc_query_impl[d196c070bbe03594]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
  29:     0x784e5d8c8494 - <rustc_const_eval[3f5e4d3a96e28080]::interpret::eval_context::InterpCx<rustc_const_eval[3f5e4d3a96e28080]::const_eval::dummy_machine::DummyMachine> as rustc_middle[dca19e53efad7b1b]::ty::layout::LayoutOf>::spanned_layout_of
  30:     0x784e5c03d2d3 - <rustc_mir_transform[c6aefdac698137fa]::dataflow_const_prop::Collector>::try_make_constant
  31:     0x784e5bff06d2 - <rustc_mir_transform[c6aefdac698137fa]::dataflow_const_prop::OperandCollector as rustc_middle[dca19e53efad7b1b]::mir::visit::Visitor>::visit_operand
  32:     0x784e5c03c098 - <rustc_mir_transform[c6aefdac698137fa]::dataflow_const_prop::Collector as rustc_mir_dataflow[8785a9baa88b9056]::framework::visitor::ResultsVisitor<rustc_mir_transform[c6aefdac698137fa]::dataflow_const_prop::ConstAnalysis>>::visit_after_early_statement_effect
  33:     0x784e5c03ecba - <rustc_mir_transform[c6aefdac698137fa]::dataflow_const_prop::DataflowConstProp as rustc_mir_transform[c6aefdac698137fa]::pass_manager::MirPass>::run_pass
  34:     0x784e5ce03abd - rustc_mir_transform[c6aefdac698137fa]::pass_manager::run_passes_inner
  35:     0x784e5d9e3cc7 - rustc_mir_transform[c6aefdac698137fa]::run_optimization_passes
  36:     0x784e5d9e15bb - rustc_mir_transform[c6aefdac698137fa]::optimized_mir
  37:     0x784e5d9e115d - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::optimized_mir::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 8usize]>>
  38:     0x784e5d23a77f - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::DefIdCache<rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  39:     0x784e5d239b80 - rustc_query_impl[d196c070bbe03594]::query_impl::optimized_mir::get_query_non_incr::__rust_end_short_backtrace
  40:     0x784e5d5a0d3c - <rustc_middle[dca19e53efad7b1b]::ty::context::TyCtxt>::instance_mir
  41:     0x784e59cc2437 - rustc_monomorphize[a230bf6b05bd6360]::mono_checks::check_mono_item
  42:     0x784e5d5a41e0 - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::check_mono_item::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 0usize]>>
  43:     0x784e5d5a451c - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::DefaultCache<rustc_middle[dca19e53efad7b1b]::ty::instance::Instance, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  44:     0x784e5d5a4194 - rustc_query_impl[d196c070bbe03594]::query_impl::check_mono_item::get_query_non_incr::__rust_end_short_backtrace
  45:     0x784e59ccbea9 - rustc_monomorphize[a230bf6b05bd6360]::collector::items_of_instance
  46:     0x784e5ce16772 - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::items_of_instance::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 32usize]>>
  47:     0x784e5d852c98 - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::DefaultCache<(rustc_middle[dca19e53efad7b1b]::ty::instance::Instance, rustc_middle[dca19e53efad7b1b]::mir::mono::CollectionMode), rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  48:     0x784e5d852908 - rustc_query_impl[d196c070bbe03594]::query_impl::items_of_instance::get_query_non_incr::__rust_end_short_backtrace
  49:     0x784e5d855231 - rustc_monomorphize[a230bf6b05bd6360]::collector::collect_items_rec::{closure#0}
  50:     0x784e5d855f66 - rustc_monomorphize[a230bf6b05bd6360]::collector::collect_items_rec
  51:     0x784e5d856b78 - rustc_monomorphize[a230bf6b05bd6360]::collector::collect_items_rec
  52:     0x784e5d2c09e1 - rustc_monomorphize[a230bf6b05bd6360]::collector::collect_crate_mono_items::{closure#1}::{closure#0}
  53:     0x784e5d47eb27 - rustc_monomorphize[a230bf6b05bd6360]::partitioning::collect_and_partition_mono_items
  54:     0x784e5e0cc5d6 - rustc_query_impl[d196c070bbe03594]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[d196c070bbe03594]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2}::{closure#0}, rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 40usize]>>
  55:     0x784e5e0cc5b9 - <rustc_query_impl[d196c070bbe03594]::query_impl::collect_and_partition_mono_items::dynamic_query::{closure#2} as core[ce1fa00964895ff1]::ops::function::FnOnce<(rustc_middle[dca19e53efad7b1b]::ty::context::TyCtxt, ())>>::call_once
  56:     0x784e5e0cc0e9 - rustc_query_system[ff49814a586d4008]::query::plumbing::try_execute_query::<rustc_query_impl[d196c070bbe03594]::DynamicConfig<rustc_query_system[ff49814a586d4008]::query::caches::SingleCache<rustc_middle[dca19e53efad7b1b]::query::erase::Erased<[u8; 40usize]>>, false, false, false>, rustc_query_impl[d196c070bbe03594]::plumbing::QueryCtxt, false>
  57:     0x784e5e0cbe8b - rustc_query_impl[d196c070bbe03594]::query_impl::collect_and_partition_mono_items::get_query_non_incr::__rust_end_short_backtrace
  58:     0x784e5e02ae9e - <rustc_codegen_llvm[bf492ce4d6272450]::LlvmCodegenBackend as rustc_codegen_ssa[71734530e995220f]::traits::backend::CodegenBackend>::codegen_crate
  59:     0x784e5e03708d - <rustc_interface[4b2c44076e9c0aea]::queries::Linker>::codegen_and_build_linker
  60:     0x784e5e034c38 - rustc_interface[4b2c44076e9c0aea]::passes::create_and_enter_global_ctxt::<core[ce1fa00964895ff1]::option::Option<rustc_interface[4b2c44076e9c0aea]::queries::Linker>, rustc_driver_impl[d80da60e87609ad4]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
  61:     0x784e5df0b5a6 - rustc_interface[4b2c44076e9c0aea]::interface::run_compiler::<(), rustc_driver_impl[d80da60e87609ad4]::run_compiler::{closure#0}>::{closure#1}
  62:     0x784e5dedad7e - std[e444442488e5ea2d]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[4b2c44076e9c0aea]::util::run_in_thread_with_globals<rustc_interface[4b2c44076e9c0aea]::util::run_in_thread_pool_with_globals<rustc_interface[4b2c44076e9c0aea]::interface::run_compiler<(), rustc_driver_impl[d80da60e87609ad4]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
  63:     0x784e5dedb1f4 - <<std[e444442488e5ea2d]::thread::Builder>::spawn_unchecked_<rustc_interface[4b2c44076e9c0aea]::util::run_in_thread_with_globals<rustc_interface[4b2c44076e9c0aea]::util::run_in_thread_pool_with_globals<rustc_interface[4b2c44076e9c0aea]::interface::run_compiler<(), rustc_driver_impl[d80da60e87609ad4]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[ce1fa00964895ff1]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  64:     0x784e5dedc5eb - std::sys::pal::unix::thread::Thread::new::thread_start::h8985427f793e6fe1
  65:     0x784e57ca370a - <unknown>
  66:     0x784e57d27aac - <unknown>
  67:                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: please attach the file at `/home/matthias/vcs/github/CRED/rustc-ice-2025-05-09T18_48_23-1552552.txt` to your bug report

note: compiler flags: -Z mir-enable-passes=+DataflowConstProp

query stack during panic:
#0 [mir_shims] generating MIR shim for `core::future::async_drop::async_drop_in_place::{closure#0}`, instance=AsyncDropGlue(DefId(2:15259 ~ core[ce1f]::future::async_drop::async_drop_in_place::{closure#0}), Coroutine(DefId(2:15259 ~ core[ce1f]::future::async_drop::async_drop_in_place::{closure#0}), [c/#0, (), core::future::ResumeTy, (), (), CoroutineWitness(DefId(2:15259 ~ core[ce1f]::future::async_drop::async_drop_in_place::{closure#0}), [c/#0]), (*mut c/#0,)]))
#1 [layout_of] computing layout of `{async fn body of core::future::async_drop::async_drop_in_place<c>()}`
... and 4 other queries... use `env RUST_BACKTRACE=1` to see the full query stack
error: aborting due to 1 previous error; 4 warnings emitted

azhogin · 2025-05-10T19:48:47Z

Fix in progress: #140902

…-for-adt-fix, r=oli-obk Async drop fix for async_drop_in_place<T> layout for unspecified T Fix for rust-lang#140423. Layout of `async_drop_in_place<T>::{closure}` is calculated for unspecified T from dataflow_const_prop `try_make_constant`. `@oli-obk,` do you think, it may be a better solution to add check like `if !args[0].is_fully_specialized() { return None; }` in `fn async_drop_coroutine_layout`? And could you, pls, recommend, how to implement `is_fully_specialized()` in a most simple way?

…fix, r=oli-obk Async drop fix for async_drop_in_place<T> layout for unspecified T Fix for rust-lang/rust#140423. Layout of `async_drop_in_place<T>::{closure}` is calculated for unspecified T from dataflow_const_prop `try_make_constant`. `@oli-obk,` do you think, it may be a better solution to add check like `if !args[0].is_fully_specialized() { return None; }` in `fn async_drop_coroutine_layout`? And could you, pls, recommend, how to implement `is_fully_specialized()` in a most simple way?

Wyvern added C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Apr 29, 2025

rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Apr 29, 2025

matthiaskrgr added the F-async_drop `#![feature(async_drop)]` label Apr 29, 2025

jieyouxu added the S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. label Apr 29, 2025

moxian mentioned this issue May 10, 2025

Stage0 bootstrap update #140887

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jieyouxu added S-has-mcve Status: A Minimal Complete and Verifiable Example has been found for this issue and removed S-needs-repro Status: This issue has no reproduction and needs a reproduction to make progress. labels May 10, 2025

azhogin mentioned this issue May 10, 2025

Async drop fix for async_drop_in_place<T> layout for unspecified T #140902

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ICE in `(25cdf1f67 2025-04-28)` #140423

ICE in `(25cdf1f67 2025-04-28)` #140423

Wyvern commented Apr 29, 2025

jieyouxu commented Apr 29, 2025

Houtamelo commented Apr 30, 2025

jieyouxu commented Apr 30, 2025

jieyouxu commented May 9, 2025

antoyo commented May 9, 2025

matthiaskrgr commented May 9, 2025 •

edited

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azhogin commented May 10, 2025

ICE in (25cdf1f67 2025-04-28) #140423

ICE in (25cdf1f67 2025-04-28) #140423

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Wyvern commented Apr 29, 2025

jieyouxu commented Apr 29, 2025

Houtamelo commented Apr 30, 2025

jieyouxu commented Apr 30, 2025

jieyouxu commented May 9, 2025

antoyo commented May 9, 2025

matthiaskrgr commented May 9, 2025 • edited Loading

azhogin commented May 10, 2025

ICE in `(25cdf1f67 2025-04-28)` #140423

ICE in `(25cdf1f67 2025-04-28)` #140423

matthiaskrgr commented May 9, 2025 •

edited

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