ice: `self.err_count()` changed but an error was not emitted #119652

matthiaskrgr · 2024-01-06T09:55:17Z

auto-reduced (treereduce-rust):

trait B {
    fn f(a: B) -> B;
}

fn main() {}

original:

#![allow(bare_trait_objects)]
trait A: Sized {
    fn f(a: A) -> A;
    //~^ ERROR associated item referring to unboxed trait object for its own trait
    //~| ERROR the trait `A` cannot be made into an object
}
trait B {
    fn f(a: B) -> B;
    //~^ ERROR associated item referring to unboxed trait object for its own trait
    //~| ERROR the trait `B` cannot be made into an object
}
trait C {
    fn f(&self, a: C) -> C;
}

fn main() {}

Version information

rustc 1.77.0-nightly (aa7e9f21e 2024-01-06)
binary: rustc
commit-hash: aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750
commit-date: 2024-01-06
host: x86_64-unknown-linux-gnu
release: 1.77.0-nightly
LLVM version: 17.0.6

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc --edition=2021

Program output

error: internal compiler error: no errors encountered even though `span_delayed_bug` issued

error: internal compiler error[E0391]: cycle detected when computing function signature of `B::f`
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:5
  |
2 |     fn f(a: B) -> B;
  |     ^^^^^^^^^^^^^^^^
  |
note: ...which requires checking if trait `B` is object safe...
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:1:1
  |
1 | trait B {
  | ^^^^^^^
note: ...which requires determining object safety of trait `B`...
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:1:1
  |
1 | trait B {
  | ^^^^^^^
  = note: ...which again requires computing function signature of `B::f`, completing the cycle
note: cycle used when collecting item types in top-level module
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:1:1
  |
1 | / trait B {
2 | |     fn f(a: B) -> B;
3 | | }
4 | |
5 | | fn main() {}
  | |____________^
  = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
note: delayed at compiler/rustc_query_system/src/query/job.rs:605:16
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
         1: <rustc_errors::DiagCtxt>::emit_diagnostic_without_consuming
         2: <rustc_span::ErrorGuaranteed as rustc_errors::diagnostic_builder::EmissionGuarantee>::emit_producing_guarantee
         3: rustc_query_system::query::plumbing::mk_cycle::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 24]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
         4: rustc_query_system::query::plumbing::cycle_error::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 24]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt>
         5: rustc_query_impl::query_impl::fn_sig::get_query_non_incr::__rust_end_short_backtrace
         6: rustc_middle::query::plumbing::query_get_at::<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 24]>>>
         7: rustc_trait_selection::traits::object_safety::virtual_call_violations_for_method
         8: rustc_trait_selection::traits::object_safety::object_safety_violations_for_assoc_item
         9: <core::iter::adapters::flatten::FlatMap<core::iter::adapters::map::Map<core::iter::adapters::map::Map<core::slice::iter::Iter<(rustc_span::symbol::Symbol, rustc_middle::ty::assoc::AssocItem)>, <rustc_data_structures::sorted_map::index_map::SortedIndexMultiMap<u32, rustc_span::symbol::Symbol, rustc_middle::ty::assoc::AssocItem>>::iter::{closure#0}>, <rustc_middle::ty::assoc::AssocItems>::in_definition_order::{closure#0}>, alloc::vec::Vec<rustc_middle::traits::ObjectSafetyViolation>, rustc_trait_selection::traits::object_safety::object_safety_violations_for_trait::{closure#0}> as core::iter::traits::iterator::Iterator>::next
        10: <core::iter::adapters::flatten::FlatMap<rustc_trait_selection::traits::util::SupertraitDefIds, alloc::vec::Vec<rustc_middle::traits::ObjectSafetyViolation>, rustc_trait_selection::traits::object_safety::object_safety_violations::{closure#0}> as core::iter::traits::iterator::Iterator>::next
        11: rustc_trait_selection::traits::object_safety::object_safety_violations
        12: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::object_safety_violations::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 16]>>
        13: <rustc_query_impl::query_impl::object_safety_violations::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_span::def_id::DefId)>>::call_once
        14: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 16]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        15: rustc_query_impl::query_impl::object_safety_violations::get_query_non_incr::__rust_end_short_backtrace
        16: rustc_middle::query::plumbing::query_get_at::<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 16]>>>
        17: rustc_trait_selection::traits::object_safety::check_is_object_safe
        18: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::check_is_object_safe::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 1]>>
        19: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        20: rustc_query_impl::query_impl::check_is_object_safe::get_query_non_incr::__rust_end_short_backtrace
        21: rustc_middle::query::plumbing::query_get_at::<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 1]>>>
        22: <dyn rustc_hir_analysis::astconv::AstConv>::maybe_lint_impl_trait
        23: <dyn rustc_hir_analysis::astconv::AstConv>::ast_ty_to_ty_inner
        24: <dyn rustc_hir_analysis::astconv::AstConv>::ty_of_fn
        25: rustc_hir_analysis::collect::fn_sig
        26: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::fn_sig::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 24]>>
        27: <rustc_query_impl::query_impl::fn_sig::dynamic_query::{closure#2} as core::ops::function::FnOnce<(rustc_middle::ty::context::TyCtxt, rustc_span::def_id::DefId)>>::call_once
        28: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::DefId, rustc_middle::query::erase::Erased<[u8; 24]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        29: rustc_query_impl::query_impl::fn_sig::get_query_non_incr::__rust_end_short_backtrace
        30: <rustc_hir_analysis::collect::CollectItemTypesVisitor as rustc_hir::intravisit::Visitor>::visit_trait_item
        31: rustc_hir_analysis::collect::collect_mod_item_types
        32: rustc_query_impl::plumbing::__rust_begin_short_backtrace::<rustc_query_impl::query_impl::collect_mod_item_types::dynamic_query::{closure#2}::{closure#0}, rustc_middle::query::erase::Erased<[u8; 0]>>
        33: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::DefaultCache<rustc_span::def_id::LocalModDefId, rustc_middle::query::erase::Erased<[u8; 0]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        34: rustc_query_impl::query_impl::collect_mod_item_types::get_query_non_incr::__rust_end_short_backtrace
        35: rustc_hir_analysis::check_crate
        36: rustc_interface::passes::analysis
        37: 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; 1]>>
        38: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
        39: rustc_query_impl::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
        40: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
        41: std::sys_common::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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
        42: <<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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
        43: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
        44: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
        45: std::sys::unix::thread::Thread::new::thread_start
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/std/src/sys/unix/thread.rs:108:17
        46: <unknown>
        47: <unknown>
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:5
  |
2 |     fn f(a: B) -> B;
  |     ^^^^^^^^^^^^^^^^

error: internal compiler error: `self.err_count()` changed but an error was not emitted
  |
  = note: delayed at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/compiler/rustc_session/src/session.rs:346:28
             0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
             1: <rustc_errors::DiagCtxt>::emit_diagnostic_without_consuming
             2: <rustc_errors::DiagCtxt>::emit_diagnostic
             3: <rustc_errors::DiagCtxt>::span_delayed_bug::<rustc_span::span_encoding::Span, &str>
             4: rustc_hir_analysis::check_crate
             5: rustc_interface::passes::analysis
             6: 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; 1]>>
             7: rustc_query_system::query::plumbing::try_execute_query::<rustc_query_impl::DynamicConfig<rustc_query_system::query::caches::SingleCache<rustc_middle::query::erase::Erased<[u8; 1]>>, false, false, false>, rustc_query_impl::plumbing::QueryCtxt, false>
             8: rustc_query_impl::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
             9: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
            10: std::sys_common::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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
            11: <<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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
            12: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
            13: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                       at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
            14: std::sys::unix::thread::Thread::new::thread_start
                       at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/std/src/sys/unix/thread.rs:108:17
            15: <unknown>
            16: <unknown>
          

error: internal compiler error[E0782]: trait objects must include the `dyn` keyword
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:13
  |
2 |     fn f(a: B) -> B;
  |             ^
  |
  = note: `B` it is not object safe, so it can't be `dyn`
note: delayed at compiler/rustc_hir_analysis/src/astconv/lint.rs:216:21
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtInner>::emit_stashed_diagnostics
         3: <rustc_errors::DiagCtxt>::print_error_count
         4: <rustc_session::session::Session>::finish_diagnostics
         5: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
         6: std::sys_common::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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
         7: <<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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
         8: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
         9: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
        10: std::sys::unix::thread::Thread::new::thread_start
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/std/src/sys/unix/thread.rs:108:17
        11: <unknown>
        12: <unknown>
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:13
  |
2 |     fn f(a: B) -> B;
  |             ^
help: use a new generic type parameter, constrained by `B`
  |
2 |     fn f<T: B>(a: T) -> B;
  |         ++++++    ~
help: you can also use an opaque type, but users won't be able to specify the type parameter when calling the `fn`, having to rely exclusively on type inference
  |
2 |     fn f(a: impl B) -> B;
  |             ++++

error: internal compiler error[E0782]: trait objects must include the `dyn` keyword
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:19
  |
2 |     fn f(a: B) -> B;
  |                   ^
  |
note: delayed at compiler/rustc_hir_analysis/src/astconv/lint.rs:216:21
         0: <rustc_errors::DiagCtxtInner>::emit_diagnostic_without_consuming
         1: <rustc_errors::DiagCtxtInner>::emit_diagnostic
         2: <rustc_errors::DiagCtxtInner>::emit_stashed_diagnostics
         3: <rustc_errors::DiagCtxt>::print_error_count
         4: <rustc_session::session::Session>::finish_diagnostics
         5: rustc_interface::interface::run_compiler::<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}
         6: std::sys_common::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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>
         7: <<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<core::result::Result<(), rustc_span::ErrorGuaranteed>, rustc_driver_impl::run_compiler::{closure#0}>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#0}::{closure#0}, core::result::Result<(), rustc_span::ErrorGuaranteed>>::{closure#1} as core::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
         8: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
         9: <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/alloc/src/boxed.rs:2016:9
        10: std::sys::unix::thread::Thread::new::thread_start
                   at /rustc/aa7e9f21e9a058a4822b6cdc19ee88c80cdb3750/library/std/src/sys/unix/thread.rs:108:17
        11: <unknown>
        12: <unknown>
 --> /tmp/icemaker_global_tempdir.OyUfQ7KVML5V/rustc_testrunner_tmpdir_reporting.vRfyT7raOx62/mvce.rs:2:19
  |
2 |     fn f(a: B) -> B;
  |                   ^
help: `B` is not object safe, use `impl B` to return an opaque type, as long as you return a single underlying type
  |
2 |     fn f(a: B) -> impl B;
  |                   ++++

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 1.77.0-nightly (aa7e9f21e 2024-01-06) running on x86_64-unknown-linux-gnu

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

query stack during panic:
end of query stack

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

fmease · 2024-01-06T10:22:47Z

Looking at the backtrace, this also has to have regressed in #119148, cc @estebank.

fmease · 2024-01-06T10:24:31Z

(I even predicted that querying the object safety from this part of the code might cause a cycle error 🙈🙈🙈)

Fix rust-lang#119652.

estebank · 2024-01-09T00:23:56Z

@fmease that wasn't quite the problem, it was because we'd correctly realize that the trait wasn't object safe, but the dyn complaint still needs to happen in 2021 for traits using themselves. Have a PR out with a fix.

fmease · 2024-01-18T03:15:11Z

Actually this doesn't ICE for me anymore on the playground (nightly, Rust 2021). Is that true? Don't have access to my machine rn, I'm on mobile ^^'.

Fix rust-lang#119652.

Avoid ICEs in trait names without `dyn` Check diagnostic is error before downgrading. Fix rust-lang#119633. Account for traits using self-trait by name without `dyn`. Fix rust-lang#119652.

Rollup merge of rust-lang#119752 - estebank:ice-ice, r=fmease Avoid ICEs in trait names without `dyn` Check diagnostic is error before downgrading. Fix rust-lang#119633. Account for traits using self-trait by name without `dyn`. Fix rust-lang#119652.

matthiaskrgr added 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. C-bug Category: This is a bug. labels Jan 6, 2024

rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Jan 6, 2024

fmease removed the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Jan 6, 2024

estebank self-assigned this Jan 9, 2024

estebank added a commit to estebank/rust that referenced this issue Jan 9, 2024

Account for traits using self-trait by name without dyn

b65d9d3

Fix rust-lang#119652.

estebank mentioned this issue Jan 9, 2024

Avoid ICEs in trait names without dyn #119752

Merged

estebank added a commit to estebank/rust that referenced this issue Jan 19, 2024

Update tests after rebase

7edbc95

Fix rust-lang#119652.

bors closed this as completed in 6b7e6ea Jan 20, 2024

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ice: `self.err_count()` changed but an error was not emitted #119652

ice: `self.err_count()` changed but an error was not emitted #119652

matthiaskrgr commented Jan 6, 2024

fmease commented Jan 6, 2024

fmease commented Jan 6, 2024

estebank commented Jan 9, 2024

fmease commented Jan 18, 2024 •

edited

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ice: self.err_count() changed but an error was not emitted #119652

ice: self.err_count() changed but an error was not emitted #119652

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matthiaskrgr commented Jan 6, 2024

fmease commented Jan 6, 2024

fmease commented Jan 6, 2024

estebank commented Jan 9, 2024

fmease commented Jan 18, 2024 • edited Loading

ice: `self.err_count()` changed but an error was not emitted #119652

ice: `self.err_count()` changed but an error was not emitted #119652

fmease commented Jan 18, 2024 •

edited

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