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[ICE] [Nightly] Compiler panicks on anonymous lifetime in impl Trait #101660

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paul-soporan opened this issue Sep 10, 2022 · 1 comment · Fixed by #103382
Closed

[ICE] [Nightly] Compiler panicks on anonymous lifetime in impl Trait #101660

paul-soporan opened this issue Sep 10, 2022 · 1 comment · Fixed by #103382
Labels
C-bug Category: This is a bug. glacier ICE tracked in rust-lang/glacier. 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.

Comments

@paul-soporan
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Code

#![feature(anonymous_lifetime_in_impl_trait)]

trait Foo<T> {
    fn bar(self, baz: T);
}

fn qux(foo: impl Foo<&str>) {
    |baz: &str| foo.bar(baz);
}

This is the most minimal example I could come up with. It works if I get rid of the : &str in baz: &str.

Meta

rustc --version --verbose:

rustc 1.65.0-nightly (1d37ed661 2022-09-09)
binary: rustc
commit-hash: 1d37ed661a6922e7a167609b8cd7eb31e972b19b
commit-date: 2022-09-09
host: x86_64-unknown-linux-gnu
release: 1.65.0-nightly
LLVM version: 15.0.0

Error output

(The full output is in the backtrace section)

thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_borrowck/src/diagnostics/region_errors.rs:631:47

[...]

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

error: internal compiler error: `InferCtxt` incorrectly tainted by errors
  |
  = note: delayed at compiler/rustc_infer/src/infer/mod.rs:1264:27
Backtrace 

➜  rustc-bug git:(master) ✗ cargo build
   Compiling rustc-bug v0.1.0 (/mnt/projects/git/rustc-bug)
thread 'rustc' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_borrowck/src/diagnostics/region_errors.rs:631:47
stack backtrace:
   0:     0x7f1cc8e58eb0 - std::backtrace_rs::backtrace::libunwind::trace::h134b013ea56868ec
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7f1cc8e58eb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h85519da7927ab55d
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f1cc8e58eb0 - std::sys_common::backtrace::_print_fmt::hd53e324e4c5c4797
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f1cc8e58eb0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he7ebdae3b4539151
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f1cc8eb3efe - core::fmt::write::h533f83a763826dcd
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/core/src/fmt/mod.rs:1202:17
   5:     0x7f1cc8e49795 - std::io::Write::write_fmt::hdf475e0edabf6618
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/io/mod.rs:1679:15
   6:     0x7f1cc8e5bb63 - std::sys_common::backtrace::_print::h18929d2d3a122c2e
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f1cc8e5bb63 - std::sys_common::backtrace::print::heeac666312b0f106
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f1cc8e5bb63 - std::panicking::default_hook::{{closure}}::h691c919edee7ee4f
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:295:22
   9:     0x7f1cc8e5b84f - std::panicking::default_hook::h4d42a88885d5436b
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:314:9
  10:     0x7f1ccb6cc8c1 - <rustc_driver[d98f0e6bb6d3ec36]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[7554d75f727e5dc5]::ops::function::FnOnce<(&core[7554d75f727e5dc5]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7f1cc8e5c39d - std::panicking::rust_panic_with_hook::h047e9ae9d3b70dff
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:702:17
  12:     0x7f1cc8e5c1b1 - std::panicking::begin_panic_handler::{{closure}}::hfe5deddff7ce3f84
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:586:13
  13:     0x7f1cc8e5935c - std::sys_common::backtrace::__rust_end_short_backtrace::h2534c34f27aaf3c3
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:138:18
  14:     0x7f1cc8e5bf12 - rust_begin_unwind
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:584:5
  15:     0x7f1cc8eb0ad3 - core::panicking::panic_fmt::h7c2848f37f3b2512
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/core/src/panicking.rs:142:14
  16:     0x7f1cc8eb091d - core::panicking::panic::ha5d9951777c83f58
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/core/src/panicking.rs:48:5
  17:     0x7f1cca60a6a1 - rustc_borrowck[f527ff9aa6c9edc3]::do_mir_borrowck
  18:     0x7f1ccb0cef76 - rustc_borrowck[f527ff9aa6c9edc3]::mir_borrowck
  19:     0x7f1ccb0ce6f1 - <rustc_borrowck[f527ff9aa6c9edc3]::provide::{closure#0} as core[7554d75f727e5dc5]::ops::function::FnOnce<(rustc_middle[5ec0a2377659145d]::ty::context::TyCtxt, rustc_span[3ca79a2f950a640c]::def_id::LocalDefId)>>::call_once
  20:     0x7f1ccac09b6d - <rustc_query_system[bca4d9faa69393e7]::dep_graph::graph::DepGraph<rustc_middle[5ec0a2377659145d]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[5ec0a2377659145d]::ty::context::TyCtxt, rustc_span[3ca79a2f950a640c]::def_id::LocalDefId, &rustc_middle[5ec0a2377659145d]::mir::query::BorrowCheckResult>
  21:     0x7f1ccac08d94 - rustc_query_system[bca4d9faa69393e7]::query::plumbing::try_execute_query::<rustc_query_impl[856212b54321fa84]::plumbing::QueryCtxt, rustc_query_system[bca4d9faa69393e7]::query::caches::DefaultCache<rustc_span[3ca79a2f950a640c]::def_id::LocalDefId, &rustc_middle[5ec0a2377659145d]::mir::query::BorrowCheckResult>>
  22:     0x7f1ccb606cc5 - <rustc_query_impl[856212b54321fa84]::Queries as rustc_middle[5ec0a2377659145d]::ty::query::QueryEngine>::mir_borrowck
  23:     0x7f1cca6f2211 - <rustc_borrowck[f527ff9aa6c9edc3]::type_check::TypeChecker>::prove_closure_bounds
  24:     0x7f1cca6d4bc3 - <rustc_borrowck[f527ff9aa6c9edc3]::type_check::TypeChecker>::typeck_mir
  25:     0x7f1cca6583a8 - rustc_borrowck[f527ff9aa6c9edc3]::nll::compute_regions
  26:     0x7f1cca600f5a - rustc_borrowck[f527ff9aa6c9edc3]::do_mir_borrowck
  27:     0x7f1ccb0cef76 - rustc_borrowck[f527ff9aa6c9edc3]::mir_borrowck
  28:     0x7f1ccb0ce6f1 - <rustc_borrowck[f527ff9aa6c9edc3]::provide::{closure#0} as core[7554d75f727e5dc5]::ops::function::FnOnce<(rustc_middle[5ec0a2377659145d]::ty::context::TyCtxt, rustc_span[3ca79a2f950a640c]::def_id::LocalDefId)>>::call_once
  29:     0x7f1ccac09b6d - <rustc_query_system[bca4d9faa69393e7]::dep_graph::graph::DepGraph<rustc_middle[5ec0a2377659145d]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[5ec0a2377659145d]::ty::context::TyCtxt, rustc_span[3ca79a2f950a640c]::def_id::LocalDefId, &rustc_middle[5ec0a2377659145d]::mir::query::BorrowCheckResult>
  30:     0x7f1ccac08d94 - rustc_query_system[bca4d9faa69393e7]::query::plumbing::try_execute_query::<rustc_query_impl[856212b54321fa84]::plumbing::QueryCtxt, rustc_query_system[bca4d9faa69393e7]::query::caches::DefaultCache<rustc_span[3ca79a2f950a640c]::def_id::LocalDefId, &rustc_middle[5ec0a2377659145d]::mir::query::BorrowCheckResult>>
  31:     0x7f1ccb606cc5 - <rustc_query_impl[856212b54321fa84]::Queries as rustc_middle[5ec0a2377659145d]::ty::query::QueryEngine>::mir_borrowck
  32:     0x7f1ccaa186e3 - rustc_data_structures[a88d71faf1e0b01c]::sync::par_for_each_in::<&[rustc_span[3ca79a2f950a640c]::def_id::LocalDefId], <rustc_middle[5ec0a2377659145d]::hir::map::Map>::par_body_owners<rustc_interface[b8431be2dc9777a]::passes::analysis::{closure#2}::{closure#0}>::{closure#0}>
  33:     0x7f1ccaa18443 - <rustc_session[79f725fc979de867]::session::Session>::time::<(), rustc_interface[b8431be2dc9777a]::passes::analysis::{closure#2}>
  34:     0x7f1ccaa15a45 - rustc_interface[b8431be2dc9777a]::passes::analysis
  35:     0x7f1ccb4a8472 - <rustc_query_system[bca4d9faa69393e7]::dep_graph::graph::DepGraph<rustc_middle[5ec0a2377659145d]::dep_graph::dep_node::DepKind>>::with_task::<rustc_middle[5ec0a2377659145d]::ty::context::TyCtxt, (), core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  36:     0x7f1ccb4a7b3a - rustc_query_system[bca4d9faa69393e7]::query::plumbing::try_execute_query::<rustc_query_impl[856212b54321fa84]::plumbing::QueryCtxt, rustc_query_system[bca4d9faa69393e7]::query::caches::DefaultCache<(), core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>>
  37:     0x7f1ccb4a75fc - rustc_query_system[bca4d9faa69393e7]::query::plumbing::get_query::<rustc_query_impl[856212b54321fa84]::queries::analysis, rustc_query_impl[856212b54321fa84]::plumbing::QueryCtxt>
  38:     0x7f1cca4992b7 - <rustc_interface[b8431be2dc9777a]::passes::QueryContext>::enter::<rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  39:     0x7f1cca48ccec - rustc_interface[b8431be2dc9777a]::interface::create_compiler_and_run::<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>
  40:     0x7f1cca48b631 - <scoped_tls[a530c759821a22c4]::ScopedKey<rustc_span[3ca79a2f950a640c]::SessionGlobals>>::set::<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  41:     0x7f1cca48b31f - std[d1a185ff54d98716]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b8431be2dc9777a]::util::run_in_thread_pool_with_globals<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  42:     0x7f1ccb5355c0 - <<std[d1a185ff54d98716]::thread::Builder>::spawn_unchecked_<rustc_interface[b8431be2dc9777a]::util::run_in_thread_pool_with_globals<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#1} as core[7554d75f727e5dc5]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  43:     0x7f1cc8e66173 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hddcbc9655423aa50
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/alloc/src/boxed.rs:1940:9
  44:     0x7f1cc8e66173 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h074e83f188f31ba5
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/alloc/src/boxed.rs:1940:9
  45:     0x7f1cc8e66173 - std::sys::unix::thread::Thread::new::thread_start::h7d9ec4c6a6f5322e
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys/unix/thread.rs:108:17
  46:     0x7f1cc8b9d54d - <unknown>
  47:     0x7f1cc8c22874 - clone
  48:                0x0 - <unknown>

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

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 1.65.0-nightly (1d37ed661 2022-09-09) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental

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

query stack during panic:
#0 [mir_borrowck] borrow-checking `qux::{closure#0}`
#1 [mir_borrowck] borrow-checking `qux`
#2 [analysis] running analysis passes on this crate
end of query stack
error: internal compiler error: no errors encountered even though `delay_span_bug` issued

error: internal compiler error: `InferCtxt` incorrectly tainted by errors
  |
  = note: delayed at compiler/rustc_infer/src/infer/mod.rs:1264:27

thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1494:13
stack backtrace:
   0:     0x7f1cc8e58eb0 - std::backtrace_rs::backtrace::libunwind::trace::h134b013ea56868ec
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   1:     0x7f1cc8e58eb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h85519da7927ab55d
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f1cc8e58eb0 - std::sys_common::backtrace::_print_fmt::hd53e324e4c5c4797
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:66:5
   3:     0x7f1cc8e58eb0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he7ebdae3b4539151
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:45:22
   4:     0x7f1cc8eb3efe - core::fmt::write::h533f83a763826dcd
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/core/src/fmt/mod.rs:1202:17
   5:     0x7f1cc8e49795 - std::io::Write::write_fmt::hdf475e0edabf6618
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/io/mod.rs:1679:15
   6:     0x7f1cc8e5bb63 - std::sys_common::backtrace::_print::h18929d2d3a122c2e
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:48:5
   7:     0x7f1cc8e5bb63 - std::sys_common::backtrace::print::heeac666312b0f106
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys_common/backtrace.rs:35:9
   8:     0x7f1cc8e5bb63 - std::panicking::default_hook::{{closure}}::h691c919edee7ee4f
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:295:22
   9:     0x7f1cc8e5b84f - std::panicking::default_hook::h4d42a88885d5436b
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:314:9
  10:     0x7f1ccb6cc8c1 - <rustc_driver[d98f0e6bb6d3ec36]::DEFAULT_HOOK::{closure#0}::{closure#0} as core[7554d75f727e5dc5]::ops::function::FnOnce<(&core[7554d75f727e5dc5]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  11:     0x7f1cc8e5c39d - std::panicking::rust_panic_with_hook::h047e9ae9d3b70dff
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/panicking.rs:702:17
  12:     0x7f1ccc822d61 - std[d1a185ff54d98716]::panicking::begin_panic::<rustc_errors[623939cad04cb150]::ExplicitBug>::{closure#0}
  13:     0x7f1ccc8228a6 - std[d1a185ff54d98716]::sys_common::backtrace::__rust_end_short_backtrace::<std[d1a185ff54d98716]::panicking::begin_panic<rustc_errors[623939cad04cb150]::ExplicitBug>::{closure#0}, !>
  14:     0x7f1ccc822866 - std[d1a185ff54d98716]::panicking::begin_panic::<rustc_errors[623939cad04cb150]::ExplicitBug>
  15:     0x7f1ccc825676 - std[d1a185ff54d98716]::panic::panic_any::<rustc_errors[623939cad04cb150]::ExplicitBug>
  16:     0x7f1ccb22f7d8 - <rustc_errors[623939cad04cb150]::HandlerInner as core[7554d75f727e5dc5]::ops::drop::Drop>::drop
  17:     0x7f1cca4d4ea8 - core[7554d75f727e5dc5]::ptr::drop_in_place::<rustc_session[79f725fc979de867]::parse::ParseSess>
  18:     0x7f1cca492908 - <alloc[b78997af7b72d6fd]::rc::Rc<rustc_session[79f725fc979de867]::session::Session> as core[7554d75f727e5dc5]::ops::drop::Drop>::drop
  19:     0x7f1cca48f8cd - core[7554d75f727e5dc5]::ptr::drop_in_place::<rustc_interface[b8431be2dc9777a]::interface::Compiler>
  20:     0x7f1cca48db41 - rustc_interface[b8431be2dc9777a]::interface::create_compiler_and_run::<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>
  21:     0x7f1cca48b631 - <scoped_tls[a530c759821a22c4]::ScopedKey<rustc_span[3ca79a2f950a640c]::SessionGlobals>>::set::<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  22:     0x7f1cca48b31f - std[d1a185ff54d98716]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b8431be2dc9777a]::util::run_in_thread_pool_with_globals<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>
  23:     0x7f1ccb5355c0 - <<std[d1a185ff54d98716]::thread::Builder>::spawn_unchecked_<rustc_interface[b8431be2dc9777a]::util::run_in_thread_pool_with_globals<rustc_interface[b8431be2dc9777a]::interface::run_compiler<core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>, rustc_driver[d98f0e6bb6d3ec36]::run_compiler::{closure#1}>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#0}, core[7554d75f727e5dc5]::result::Result<(), rustc_errors[623939cad04cb150]::ErrorGuaranteed>>::{closure#1} as core[7554d75f727e5dc5]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  24:     0x7f1cc8e66173 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hddcbc9655423aa50
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/alloc/src/boxed.rs:1940:9
  25:     0x7f1cc8e66173 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h074e83f188f31ba5
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/alloc/src/boxed.rs:1940:9
  26:     0x7f1cc8e66173 - std::sys::unix::thread::Thread::new::thread_start::h7d9ec4c6a6f5322e
                               at /rustc/1d37ed661a6922e7a167609b8cd7eb31e972b19b/library/std/src/sys/unix/thread.rs:108:17
  27:     0x7f1cc8b9d54d - <unknown>
  28:     0x7f1cc8c22874 - clone
  29:                0x0 - <unknown>

note: the compiler unexpectedly panicked. this is a bug.

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 1.65.0-nightly (1d37ed661 2022-09-09) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 -C incremental

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

query stack during panic:
end of query stack
thread panicked while panicking. aborting.
error: could not compile `rustc-bug`

Caused by:
  process didn't exit successfully: `rustc --crate-name rustc_bug --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=e3283b22fa7dac88 -C extra-filename=-e3283b22fa7dac88 --out-dir /mnt/projects/git/rustc-bug/target/debug/deps -C incremental=/mnt/projects/git/rustc-bug/target/debug/incremental -L dependency=/mnt/projects/git/rustc-bug/target/debug/deps` (signal: 6, SIGABRT: process abort signal)

@paul-soporan paul-soporan 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 Sep 10, 2022
@paul-soporan
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Looks like the following crashes too, so the closure isn't actually required:

#![feature(anonymous_lifetime_in_impl_trait)]

trait Foo<T> {
    fn bar(self, baz: T);
}

fn qux(foo: impl Foo<&str>, baz: &str) {
    foo.bar(baz);
}

@paul-soporan paul-soporan changed the title [ICE] [Nightly] Compiler crashes when on anonymous lifetime in impl Trait [ICE] [Nightly] Compiler crashes on anonymous lifetime in impl Trait Sep 10, 2022
@paul-soporan paul-soporan changed the title [ICE] [Nightly] Compiler crashes on anonymous lifetime in impl Trait [ICE] [Nightly] Compiler panicks on anonymous lifetime in impl Trait Sep 10, 2022
matthiaskrgr added a commit to matthiaskrgr/glacier that referenced this issue Sep 11, 2022
@matthiaskrgr
add 3/4 ices
2bb37ad 
rust-lang/rust#101660
rust-lang/rust#101665
rust-lang/rust#101667
@matthiaskrgr matthiaskrgr mentioned this issue Sep 11, 2022
Merged
@rust-lang-glacier-bot rust-lang-glacier-bot added the glacier ICE tracked in rust-lang/glacier. label Sep 11, 2022
@compiler-errors compiler-errors mentioned this issue Oct 22, 2022
Merged
JohnTitor pushed a commit to JohnTitor/rust that referenced this issue Oct 24, 2022
Rollup merge of rust-lang#103382 - compiler-errors:anon-apit-lt-regio…
e94f815 
…n-ice, r=cjgillot

Don't ICE when reporting borrowck errors involving regions from `anonymous_lifetime_in_impl_trait`

The issue here is that when we have:

```
trait Trait<'a> { .. }

fn foo(arg: impl Trait) { .. }
```

The anonymous lifetime `'_` that we generate for `arg: impl Trait` doesn't end up in the argument type (which is a param) but in a where-clause of the function, in a predicate whose self type is that param ty.

Fixes rust-lang#101660

r? `@cjgillot`
@bors bors closed this as completed in 6383540 Oct 25, 2022
This was referenced Oct 26, 2022
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C-bug Category: This is a bug. glacier ICE tracked in rust-lang/glacier. 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.
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