ICE: argument to drop_in_place is not a raw ptr: &dyn Trait2<Type1>

[matthiaskrgr]

Code

#![crate_type = "lib"]
#![feature(arbitrary_self_types, no_core, lang_items)]
#![no_core]

#[lang = "sized"]
trait Sized {}
#[lang = "copy"]
trait Copy {}
#[lang = "receiver"]
trait Receiver {}
#[lang = "dispatch_from_dyn"]
trait DispatchFromDyn<T> {}
impl<'a, T: ?Sized + Unsize<U>, U: ?Sized> DispatchFromDyn<&'a U> for &'a T {}
#[lang = "unsize"]
trait Unsize<T: ?Sized> {}
#[lang = "coerce_unsized"]
pub trait CoerceUnsized<T: ?Sized> {}
impl<'a, 'b: 'a, T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<&'a U> for &'b T {}

#[lang = "drop_in_place"]
fn drop_in_place_fn<T>(a: &dyn Trait2<T>) {}

pub trait Trait1 {
    fn foo(&self);
}

pub struct Type1;

impl Trait1 for Type1 {
    fn foo(&self) {}
}

pub trait Trait2<T> {}

pub fn bar1() {
    let a = Type1;
    let b = &a as &dyn Trait1;
    b.foo();
}

Meta

rustc --version --verbose:

rustc 1.71.0-nightly (f3d597b31 2023-05-23)
binary: rustc
commit-hash: f3d597b31c0f101a02c230798afa31a36bdacbc6
commit-date: 2023-05-23
host: x86_64-unknown-linux-gnu
release: 1.71.0-nightly
LLVM version: 16.0.4

Error output

<output>

Backtrace

warning: unused variable: `a`
  --> treereduce.out:21:24
   |
21 | fn drop_in_place_fn<T>(a: &dyn Trait2<T>) {}
   |                        ^ help: if this is intentional, prefix it with an underscore: `_a`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: private trait `Sized` in public interface (error E0445)
  --> treereduce.out:33:1
   |
33 | pub trait Trait2<T> {}
   | ^^^^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
   = note: `#[warn(private_in_public)]` on by default

error: internal compiler error: compiler/rustc_ty_utils/src/abi.rs:386:18: argument to drop_in_place is not a raw ptr: &dyn Trait2<Type1>

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/compiler/rustc_errors/src/lib.rs:1650:9
stack backtrace:
   0:     0x7fac5e569531 - std::backtrace_rs::backtrace::libunwind::trace::h6baaeedd4fccd054
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fac5e569531 - std::backtrace_rs::backtrace::trace_unsynchronized::h8e9568254f3fa164
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fac5e569531 - std::sys_common::backtrace::_print_fmt::hef8d1d746c9f67ae
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fac5e569531 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc747bb379fb72440
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fac5e5c9b8f - core::fmt::rt::Argument::fmt::h3956dc7d56f74ca3
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/core/src/fmt/rt.rs:138:9
   5:     0x7fac5e5c9b8f - core::fmt::write::hfa3d2c4a997c6a93
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/core/src/fmt/mod.rs:1094:21
   6:     0x7fac5e55c831 - std::io::Write::write_fmt::heaf05fdef908d88e
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/io/mod.rs:1712:15
   7:     0x7fac5e569345 - std::sys_common::backtrace::_print::h7e0d6fff8f40243c
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7fac5e569345 - std::sys_common::backtrace::print::hbde3ac9b6cb1d75f
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7fac5e56bff7 - std::panicking::default_hook::{{closure}}::hd41b67a1f293cacb
  10:     0x7fac5e56bde4 - std::panicking::default_hook::h2876d7042a0118d9
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/panicking.rs:288:9
  11:     0x7fac616f5f5b - rustc_driver_impl[582d5cb644cbfc29]::install_ice_hook::{closure#0}
  12:     0x7fac5e56c717 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h99db99dd6b6e0d19
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/alloc/src/boxed.rs:1999:9
  13:     0x7fac5e56c717 - std::panicking::rust_panic_with_hook::h1658669de3396d92
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/panicking.rs:695:13
  14:     0x7fac61bffcb1 - std[f2da8316d6db2576]::panicking::begin_panic::<rustc_errors[64134838643052e9]::ExplicitBug>::{closure#0}
  15:     0x7fac61bfa106 - std[f2da8316d6db2576]::sys_common::backtrace::__rust_end_short_backtrace::<std[f2da8316d6db2576]::panicking::begin_panic<rustc_errors[64134838643052e9]::ExplicitBug>::{closure#0}, !>
  16:     0x7fac61bf98a6 - std[f2da8316d6db2576]::panicking::begin_panic::<rustc_errors[64134838643052e9]::ExplicitBug>
  17:     0x7fac61bf3414 - <rustc_errors[64134838643052e9]::HandlerInner>::bug::<alloc[c0674fa548f2638a]::string::String>
  18:     0x7fac61bf31b6 - <rustc_errors[64134838643052e9]::Handler>::bug::<alloc[c0674fa548f2638a]::string::String>
  19:     0x7fac61c76f0c - rustc_middle[4e8357760ade6042]::util::bug::opt_span_bug_fmt::<rustc_span[f846a9a6973d9efc]::span_encoding::Span>::{closure#0}
  20:     0x7fac61c743fa - rustc_middle[4e8357760ade6042]::ty::context::tls::with_opt::<rustc_middle[4e8357760ade6042]::util::bug::opt_span_bug_fmt<rustc_span[f846a9a6973d9efc]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7fac61c743ca - rustc_middle[4e8357760ade6042]::ty::context::tls::with_context_opt::<rustc_middle[4e8357760ade6042]::ty::context::tls::with_opt<rustc_middle[4e8357760ade6042]::util::bug::opt_span_bug_fmt<rustc_span[f846a9a6973d9efc]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7fac5fedb86d - rustc_middle[4e8357760ade6042]::util::bug::bug_fmt
  23:     0x7fac5f8430b5 - <core[8abe981e17941196]::iter::adapters::GenericShunt<core[8abe981e17941196]::iter::adapters::map::Map<core[8abe981e17941196]::iter::adapters::enumerate::Enumerate<core[8abe981e17941196]::iter::adapters::chain::Chain<core[8abe981e17941196]::iter::adapters::chain::Chain<core[8abe981e17941196]::iter::adapters::copied::Copied<core[8abe981e17941196]::slice::iter::Iter<rustc_middle[4e8357760ade6042]::ty::Ty>>, core[8abe981e17941196]::iter::adapters::copied::Copied<core[8abe981e17941196]::slice::iter::Iter<rustc_middle[4e8357760ade6042]::ty::Ty>>>, core[8abe981e17941196]::option::IntoIter<rustc_middle[4e8357760ade6042]::ty::Ty>>>, rustc_ty_utils[ef6fa4138e700ebe]::abi::fn_abi_new_uncached::{closure#1}>, core[8abe981e17941196]::result::Result<core[8abe981e17941196]::convert::Infallible, rustc_middle[4e8357760ade6042]::ty::layout::FnAbiError>> as core[8abe981e17941196]::iter::traits::iterator::Iterator>::next
  24:     0x7fac6065db8d - rustc_ty_utils[ef6fa4138e700ebe]::abi::fn_abi_new_uncached
  25:     0x7fac60658da6 - rustc_ty_utils[ef6fa4138e700ebe]::abi::fn_abi_of_instance
  26:     0x7fac5f7a0978 - rustc_query_impl[9e447be1993c3916]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[9e447be1993c3916]::query_impl::fn_abi_of_instance::dynamic_query::{closure#2}::{closure#0}, rustc_middle[4e8357760ade6042]::query::erase::Erased<[u8; 24usize]>>
  27:     0x7fac606d5ea2 - rustc_query_system[bbfbc2f9f51dee36]::query::plumbing::try_execute_query::<rustc_query_impl[9e447be1993c3916]::DynamicConfig<rustc_query_system[bbfbc2f9f51dee36]::query::caches::DefaultCache<rustc_middle[4e8357760ade6042]::ty::ParamEnvAnd<(rustc_middle[4e8357760ade6042]::ty::instance::Instance, &rustc_middle[4e8357760ade6042]::ty::list::List<rustc_middle[4e8357760ade6042]::ty::Ty>)>, rustc_middle[4e8357760ade6042]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[9e447be1993c3916]::plumbing::QueryCtxt, false>
  28:     0x7fac606d5acd - rustc_query_impl[9e447be1993c3916]::query_impl::fn_abi_of_instance::get_query_non_incr::__rust_end_short_backtrace
  29:     0x7fac5fdaf2fa - rustc_codegen_llvm[c467aa6e245be363]::callee::get_fn
  30:     0x7fac601072f8 - <rustc_codegen_llvm[c467aa6e245be363]::context::CodegenCx as rustc_codegen_ssa[434f07609135cfcd]::traits::consts::ConstMethods>::scalar_to_backend
  31:     0x7fac6010b195 - rustc_codegen_llvm[c467aa6e245be363]::consts::const_alloc_to_llvm
  32:     0x7fac6011daea - rustc_codegen_ssa[434f07609135cfcd]::meth::get_vtable::<rustc_codegen_llvm[c467aa6e245be363]::context::CodegenCx>
  33:     0x7fac60118900 - rustc_codegen_ssa[434f07609135cfcd]::base::unsized_info::<rustc_codegen_llvm[c467aa6e245be363]::builder::Builder>
  34:     0x7fac6010d85a - rustc_codegen_ssa[434f07609135cfcd]::base::unsize_ptr::<rustc_codegen_llvm[c467aa6e245be363]::builder::Builder>
  35:     0x7fac600eb705 - <rustc_codegen_ssa[434f07609135cfcd]::mir::FunctionCx<rustc_codegen_llvm[c467aa6e245be363]::builder::Builder>>::codegen_rvalue_operand
  36:     0x7fac600bd25c - rustc_codegen_ssa[434f07609135cfcd]::mir::codegen_mir::<rustc_codegen_llvm[c467aa6e245be363]::builder::Builder>
  37:     0x7fac60d2ba47 - rustc_codegen_llvm[c467aa6e245be363]::base::compile_codegen_unit::module_codegen
  38:     0x7fac60d2a639 - <rustc_codegen_llvm[c467aa6e245be363]::LlvmCodegenBackend as rustc_codegen_ssa[434f07609135cfcd]::traits::backend::ExtraBackendMethods>::compile_codegen_unit
  39:     0x7fac60d26c72 - rustc_codegen_ssa[434f07609135cfcd]::base::codegen_crate::<rustc_codegen_llvm[c467aa6e245be363]::LlvmCodegenBackend>
  40:     0x7fac60d26552 - <rustc_codegen_llvm[c467aa6e245be363]::LlvmCodegenBackend as rustc_codegen_ssa[434f07609135cfcd]::traits::backend::CodegenBackend>::codegen_crate
  41:     0x7fac609a2612 - <rustc_session[8a2390cb7e4bb88d]::session::Session>::time::<alloc[c0674fa548f2638a]::boxed::Box<dyn core[8abe981e17941196]::any::Any>, rustc_interface[4027ea3aaa7c84cf]::passes::start_codegen::{closure#0}>
  42:     0x7fac609a215b - rustc_interface[4027ea3aaa7c84cf]::passes::start_codegen
  43:     0x7fac6099fab7 - <rustc_middle[4e8357760ade6042]::ty::context::GlobalCtxt>::enter::<<rustc_interface[4027ea3aaa7c84cf]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[8abe981e17941196]::result::Result<alloc[c0674fa548f2638a]::boxed::Box<dyn core[8abe981e17941196]::any::Any>, rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>
  44:     0x7fac6099e24d - <rustc_interface[4027ea3aaa7c84cf]::queries::Queries>::ongoing_codegen
  45:     0x7fac6099d834 - <rustc_interface[4027ea3aaa7c84cf]::interface::Compiler>::enter::<rustc_driver_impl[582d5cb644cbfc29]::run_compiler::{closure#1}::{closure#2}, core[8abe981e17941196]::result::Result<core[8abe981e17941196]::option::Option<rustc_interface[4027ea3aaa7c84cf]::queries::Linker>, rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>
  46:     0x7fac6099b59c - <scoped_tls[4ceba47216e47159]::ScopedKey<rustc_span[f846a9a6973d9efc]::SessionGlobals>>::set::<rustc_interface[4027ea3aaa7c84cf]::interface::run_compiler<core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>, rustc_driver_impl[582d5cb644cbfc29]::run_compiler::{closure#1}>::{closure#0}, core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>
  47:     0x7fac6099aa36 - std[f2da8316d6db2576]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[4027ea3aaa7c84cf]::util::run_in_thread_pool_with_globals<rustc_interface[4027ea3aaa7c84cf]::interface::run_compiler<core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>, rustc_driver_impl[582d5cb644cbfc29]::run_compiler::{closure#1}>::{closure#0}, core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>
  48:     0x7fac60fb1585 - <<std[f2da8316d6db2576]::thread::Builder>::spawn_unchecked_<rustc_interface[4027ea3aaa7c84cf]::util::run_in_thread_pool_with_globals<rustc_interface[4027ea3aaa7c84cf]::interface::run_compiler<core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>, rustc_driver_impl[582d5cb644cbfc29]::run_compiler::{closure#1}>::{closure#0}, core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[8abe981e17941196]::result::Result<(), rustc_span[f846a9a6973d9efc]::ErrorGuaranteed>>::{closure#1} as core[8abe981e17941196]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  49:     0x7fac5e576b85 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hddd06452c293754a
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/alloc/src/boxed.rs:1985:9
  50:     0x7fac5e576b85 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hda65146f537261ce
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/alloc/src/boxed.rs:1985:9
  51:     0x7fac5e576b85 - std::sys::unix::thread::Thread::new::thread_start::h0ad9b921d3c1653e
                               at /rustc/f3d597b31c0f101a02c230798afa31a36bdacbc6/library/std/src/sys/unix/thread.rs:108:17
  52:     0x7fac5e2d4bb5 - <unknown>
  53:     0x7fac5e356d90 - <unknown>
  54:                0x0 - <unknown>

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.71.0-nightly (f3d597b31 2023-05-23) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [fn_abi_of_instance] computing call ABI of `drop_in_place_fn::<Type1> - shim(None)`
end of query stack
error: aborting due to previous error; 2 warnings emitted

[matthiaskrgr]

This compiles fine with rustc 1.71.0-nightly (8b4b20836 2023-05-22) but ICEs with rustc 1.71.0-nightly (f3d597b31 2023-05-23)

[matthiaskrgr]

ICEs since #111807

[Noratrieb]

this is a malformed lang item, we do not core to support these.
please avoid submitting ICE bugs for malformed lang items and other no_core shenanigans, thanks!