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Normalize instance substs during legacy symbol mangling #100312

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Normalize instance substs during legacy symbol mangling #100312

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compiler-errors
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@compiler-errors compiler-errors commented Aug 9, 2022 •
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We already normalize in the v0 mangling scheme, and this shouldn't have an effect on non-generic_const_expr code, since normalization should be idempotent in any other case, though I can gate it behind that feature if desired if there's perceived risk.

Open to alternative approaches, such as tracking down where these unnormalized const substs are actually coming from.

Fixes #100217
Fixes #83972
Fixes #84669
Fixes #86710
Fixes #82268
Fixes #73298

@rustbot rustbot added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 9, 2022
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r? @nagisa

(rust-highfive has picked a reviewer for you, use r? to override)

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Aug 9, 2022
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Ugh, debug assertions.

@rustbot author

@rustbot rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 9, 2022
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The job x86_64-gnu-llvm-12 failed! Check out the build log: (web) (plain)

Click to see the possible cause of the failure (guessed by this bot) 
........................................................................................ 1848/13341
........................................................................................ 1936/13341
.......................i................................................................ 2024/13341
........................................................................................ 2112/13341
............................F..........F.F...FF......................................... 2200/13341
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........................................................................................ 2640/13341
---
---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-73298.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/const-generics/generic_const_exprs/issue-73298.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-73298" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-73298/auxiliary"
stdout: none
--- stderr -------------------------------
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Binder(<[u8; _] as std::default::Default>, [])`,
 right: `Binder(<[u8; 1] as std::default::Default>, [])`', compiler/rustc_trait_selection/src/traits/codegen.rs:27:5
stack backtrace:
   0:     0x7fc71a50df9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be032c13d1a1fb4
   1:     0x7fc71a5749f8 - core::fmt::write::hd39ffdcfa24baa9b
   2:     0x7fc71a4fe5b1 - std::io::Write::write_fmt::h4d70e6116713ca0d
   3:     0x7fc71a510f5e - std::panicking::default_hook::{{closure}}::h9254ffceb515c6fc
   4:     0x7fc71a510c1f - std::panicking::default_hook::h49ef3f212db503e7
   5:     0x7fc71aec8864 - rustc_driver[c0255ac83e4c1fad]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:     0x7fc71a511712 - std::panicking::rust_panic_with_hook::ha9463a82d3d96cfd
   7:     0x7fc71a511537 - std::panicking::begin_panic_handler::{{closure}}::hdd83b3b3088b185d
   8:     0x7fc71a50e514 - std::sys_common::backtrace::__rust_end_short_backtrace::h34f288e12f47d353
   9:     0x7fc71a511202 - rust_begin_unwind
  10:     0x7fc71a4c0e13 - core::panicking::panic_fmt::haa22a95a317e8953
  11:     0x7fc71a570e28 - core::panicking::assert_failed_inner::hd180275305e23e71
  12:     0x7fc71ae478b4 - core[ad976174ce31ff9]::panicking::assert_failed::<rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>, rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>>
Some tests failed in compiletest suite=ui mode=ui host=x86_64-unknown-linux-gnu target=x86_64-unknown-linux-gnu
  13:     0x7fc71d5e7401 - rustc_trait_selection[58e009e87374326d]::traits::codegen::codegen_fulfill_obligation
  14:     0x7fc71cbc6e91 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::codegen_fulfill_obligation, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  15:     0x7fc71c6d83f2 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::codegen_fulfill_obligation
  16:     0x7fc71bba9f8d - rustc_ty_utils[a98a7c6729381d88]::instance::inner_resolve_instance
  17:     0x7fc71bba93f0 - rustc_ty_utils[a98a7c6729381d88]::instance::resolve_instance
  18:     0x7fc71cb979c8 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::resolve_instance, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  19:     0x7fc71c7009ff - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::resolve_instance
  20:     0x7fc71d8d00c4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve_opt_const_arg
  21:     0x7fc71d8cfcc4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve
  22:     0x7fc71b307f1e - <rustc_monomorphize[a6ed58b846fc6559]::collector::MirNeighborCollector as rustc_middle[ecf285994cf87b1c]::mir::visit::Visitor>::visit_terminator
  23:     0x7fc71b313b4d - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_neighbours
  24:     0x7fc71b30ea8a - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  25:     0x7fc71b30efd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  26:     0x7fc71b31ad0d - <core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once
  27:     0x7fc71b352ec5 - std[deebe81a6960dd3c]::panicking::try::<(), core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}>>
  28:     0x7fc71b32da2e - rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in::<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  29:     0x7fc71b3520eb - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<(), rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}>
  30:     0x7fc71b30b3f7 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items
  31:     0x7fc71b31c87a - rustc_monomorphize[a6ed58b846fc6559]::partitioning::collect_and_partition_mono_items
  32:     0x7fc71caff8d2 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::try_execute_query::<rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt, rustc_query_system[13b902c4efeb0e52]::query::caches::DefaultCache<(), (&std[deebe81a6960dd3c]::collections::hash::set::HashSet<rustc_span[b828b7112f1d25f2]::def_id::DefId, core[ad976174ce31ff9]::hash::BuildHasherDefault<rustc_hash[f08e1d26a6e2cc74]::FxHasher>>, &[rustc_middle[ecf285994cf87b1c]::mir::mono::CodegenUnit])>>
  33:     0x7fc71cbd1dfa - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::collect_and_partition_mono_items, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  34:     0x7fc71c6f7219 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::collect_and_partition_mono_items
  35:     0x7fc71b1156ed - rustc_codegen_ssa[ed3b08cdcbcc0128]::base::codegen_crate::<rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend>
  36:     0x7fc71b1cc68d - <rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend as rustc_codegen_ssa[ed3b08cdcbcc0128]::traits::backend::CodegenBackend>::codegen_crate
  37:     0x7fc71b03d16b - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_interface[2068bcb7cb6bfb23]::passes::start_codegen::{closure#0}>
  38:     0x7fc71b00232c - <rustc_interface[2068bcb7cb6bfb23]::passes::QueryContext>::enter::<<rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ad976174ce31ff9]::result::Result<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  39:     0x7fc71afe746d - <rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen
  40:     0x7fc71aeca4ef - <rustc_interface[2068bcb7cb6bfb23]::interface::Compiler>::enter::<rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}::{closure#2}, core[ad976174ce31ff9]::result::Result<core[ad976174ce31ff9]::option::Option<rustc_interface[2068bcb7cb6bfb23]::queries::Linker>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  41:     0x7fc71aeba471 - rustc_span[b828b7112f1d25f2]::with_source_map::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#1}>
  42:     0x7fc71aeccf1a - rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>
  43:     0x7fc71aeb43a2 - <scoped_tls[ff7f2889da7e8bff]::ScopedKey<rustc_span[b828b7112f1d25f2]::SessionGlobals>>::set::<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  44:     0x7fc71aeec0cf - std[deebe81a6960dd3c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  45:     0x7fc71af2384e - std[deebe81a6960dd3c]::panicking::try::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  46:     0x7fc71aeedc02 - <<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1} as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fc71a51c9e5 - std::sys::unix::thread::Thread::new::thread_start::h4deef73939f2999d
  48:     0x7fc714a67609 - start_thread
  49:     0x7fc71a37a133 - clone
  50:                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 (d039643f7 2022-08-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0
query stack during panic:
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `core::default::Default` fulfills its obligations
#1 [resolve_instance] resolving instance `<[u8; _] as core::default::Default>::default`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
------------------------------------------


---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-83972.rs stdout ----
---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-83972.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/const-generics/generic_const_exprs/issue-83972.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-83972" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-83972/auxiliary"
stdout: none
--- stderr -------------------------------
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Binder(<FooImpl<{
            { 4 }
        }> as Foo>, [])`,
 right: `Binder(<FooImpl<4> as Foo>, [])`', compiler/rustc_trait_selection/src/traits/codegen.rs:27:5
stack backtrace:
   0:     0x7fd37ae4bf9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be032c13d1a1fb4
   1:     0x7fd37aeb29f8 - core::fmt::write::hd39ffdcfa24baa9b
   2:     0x7fd37ae3c5b1 - std::io::Write::write_fmt::h4d70e6116713ca0d
   3:     0x7fd37ae4ef5e - std::panicking::default_hook::{{closure}}::h9254ffceb515c6fc
   4:     0x7fd37ae4ec1f - std::panicking::default_hook::h49ef3f212db503e7
   5:     0x7fd37b806864 - rustc_driver[c0255ac83e4c1fad]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:     0x7fd37ae4f712 - std::panicking::rust_panic_with_hook::ha9463a82d3d96cfd
   7:     0x7fd37ae4f537 - std::panicking::begin_panic_handler::{{closure}}::hdd83b3b3088b185d
   8:     0x7fd37ae4c514 - std::sys_common::backtrace::__rust_end_short_backtrace::h34f288e12f47d353
   9:     0x7fd37ae4f202 - rust_begin_unwind
  10:     0x7fd37adfee13 - core::panicking::panic_fmt::haa22a95a317e8953
  11:     0x7fd37aeaee28 - core::panicking::assert_failed_inner::hd180275305e23e71
  12:     0x7fd37b7858b4 - core[ad976174ce31ff9]::panicking::assert_failed::<rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>, rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>>
  13:     0x7fd37df25401 - rustc_trait_selection[58e009e87374326d]::traits::codegen::codegen_fulfill_obligation
  14:     0x7fd37d504e91 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::codegen_fulfill_obligation, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  15:     0x7fd37d0163f2 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::codegen_fulfill_obligation
  16:     0x7fd37c4e7f8d - rustc_ty_utils[a98a7c6729381d88]::instance::inner_resolve_instance
  17:     0x7fd37c4e73f0 - rustc_ty_utils[a98a7c6729381d88]::instance::resolve_instance
  18:     0x7fd37d4d59c8 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::resolve_instance, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  19:     0x7fd37d03e9ff - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::resolve_instance
  20:     0x7fd37e20e0c4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve_opt_const_arg
  21:     0x7fd37e20dcc4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve
  22:     0x7fd37bc45f1e - <rustc_monomorphize[a6ed58b846fc6559]::collector::MirNeighborCollector as rustc_middle[ecf285994cf87b1c]::mir::visit::Visitor>::visit_terminator
  23:     0x7fd37bc51b4d - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_neighbours
  24:     0x7fd37bc4ca8a - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  25:     0x7fd37bc4cfd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  26:     0x7fd37bc58d0d - <core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once
  27:     0x7fd37bc90ec5 - std[deebe81a6960dd3c]::panicking::try::<(), core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}>>
  28:     0x7fd37bc6ba2e - rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in::<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  29:     0x7fd37bc900eb - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<(), rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}>
  30:     0x7fd37bc493f7 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items
  31:     0x7fd37bc5a87a - rustc_monomorphize[a6ed58b846fc6559]::partitioning::collect_and_partition_mono_items
  32:     0x7fd37d43d8d2 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::try_execute_query::<rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt, rustc_query_system[13b902c4efeb0e52]::query::caches::DefaultCache<(), (&std[deebe81a6960dd3c]::collections::hash::set::HashSet<rustc_span[b828b7112f1d25f2]::def_id::DefId, core[ad976174ce31ff9]::hash::BuildHasherDefault<rustc_hash[f08e1d26a6e2cc74]::FxHasher>>, &[rustc_middle[ecf285994cf87b1c]::mir::mono::CodegenUnit])>>
  33:     0x7fd37d50fdfa - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::collect_and_partition_mono_items, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  34:     0x7fd37d035219 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::collect_and_partition_mono_items
  35:     0x7fd37ba536ed - rustc_codegen_ssa[ed3b08cdcbcc0128]::base::codegen_crate::<rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend>
  36:     0x7fd37bb0a68d - <rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend as rustc_codegen_ssa[ed3b08cdcbcc0128]::traits::backend::CodegenBackend>::codegen_crate
  37:     0x7fd37b97b16b - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_interface[2068bcb7cb6bfb23]::passes::start_codegen::{closure#0}>
  38:     0x7fd37b94032c - <rustc_interface[2068bcb7cb6bfb23]::passes::QueryContext>::enter::<<rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ad976174ce31ff9]::result::Result<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  39:     0x7fd37b92546d - <rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen
  40:     0x7fd37b8084ef - <rustc_interface[2068bcb7cb6bfb23]::interface::Compiler>::enter::<rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}::{closure#2}, core[ad976174ce31ff9]::result::Result<core[ad976174ce31ff9]::option::Option<rustc_interface[2068bcb7cb6bfb23]::queries::Linker>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  41:     0x7fd37b7f8471 - rustc_span[b828b7112f1d25f2]::with_source_map::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#1}>
  42:     0x7fd37b80af1a - rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>
  43:     0x7fd37b7f23a2 - <scoped_tls[ff7f2889da7e8bff]::ScopedKey<rustc_span[b828b7112f1d25f2]::SessionGlobals>>::set::<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  44:     0x7fd37b82a0cf - std[deebe81a6960dd3c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  45:     0x7fd37b86184e - std[deebe81a6960dd3c]::panicking::try::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  46:     0x7fd37b82bc02 - <<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1} as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fd37ae5a9e5 - std::sys::unix::thread::Thread::new::thread_start::h4deef73939f2999d
  48:     0x7fd3753a5609 - start_thread
  49:     0x7fd37acb8133 - clone
  50:                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 (d039643f7 2022-08-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0
query stack during panic:
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `Foo` fulfills its obligations
#1 [resolve_instance] resolving instance `<FooImpl<{
            { 4 }
        }> as Foo>::foo`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
------------------------------------------


---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-84669.rs stdout ----
---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-84669.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/const-generics/generic_const_exprs/issue-84669.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-84669" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-84669/auxiliary"
stdout: none
--- stderr -------------------------------
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Binder(<[u8; _] as std::convert::AsRef<[u8]>>, [])`,
 right: `Binder(<[u8; 3] as std::convert::AsRef<[u8]>>, [])`', compiler/rustc_trait_selection/src/traits/codegen.rs:27:5
stack backtrace:
   0:     0x7fc719887f9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be032c13d1a1fb4
   1:     0x7fc7198ee9f8 - core::fmt::write::hd39ffdcfa24baa9b
   2:     0x7fc7198785b1 - std::io::Write::write_fmt::h4d70e6116713ca0d
   3:     0x7fc71988af5e - std::panicking::default_hook::{{closure}}::h9254ffceb515c6fc
   4:     0x7fc71988ac1f - std::panicking::default_hook::h49ef3f212db503e7
   5:     0x7fc71a242864 - rustc_driver[c0255ac83e4c1fad]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:     0x7fc71988b712 - std::panicking::rust_panic_with_hook::ha9463a82d3d96cfd
   7:     0x7fc71988b537 - std::panicking::begin_panic_handler::{{closure}}::hdd83b3b3088b185d
   8:     0x7fc719888514 - std::sys_common::backtrace::__rust_end_short_backtrace::h34f288e12f47d353
   9:     0x7fc71988b202 - rust_begin_unwind
  10:     0x7fc71983ae13 - core::panicking::panic_fmt::haa22a95a317e8953
  11:     0x7fc7198eae28 - core::panicking::assert_failed_inner::hd180275305e23e71
  12:     0x7fc71a1c18b4 - core[ad976174ce31ff9]::panicking::assert_failed::<rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>, rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>>
  13:     0x7fc71c961401 - rustc_trait_selection[58e009e87374326d]::traits::codegen::codegen_fulfill_obligation
  14:     0x7fc71bf40e91 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::codegen_fulfill_obligation, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  15:     0x7fc71ba523f2 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::codegen_fulfill_obligation
  16:     0x7fc71af23f8d - rustc_ty_utils[a98a7c6729381d88]::instance::inner_resolve_instance
  17:     0x7fc71af233f0 - rustc_ty_utils[a98a7c6729381d88]::instance::resolve_instance
  18:     0x7fc71bf119c8 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::resolve_instance, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  19:     0x7fc71ba7a9ff - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::resolve_instance
  20:     0x7fc71cc4a0c4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve_opt_const_arg
  21:     0x7fc71cc49cc4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve
  22:     0x7fc71a681f1e - <rustc_monomorphize[a6ed58b846fc6559]::collector::MirNeighborCollector as rustc_middle[ecf285994cf87b1c]::mir::visit::Visitor>::visit_terminator
  23:     0x7fc71a68db4d - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_neighbours
  24:     0x7fc71a688a8a - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  25:     0x7fc71a688fd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  26:     0x7fc71a694d0d - <core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once
  27:     0x7fc71a6ccec5 - std[deebe81a6960dd3c]::panicking::try::<(), core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}>>
  28:     0x7fc71a6a7a2e - rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in::<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  29:     0x7fc71a6cc0eb - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<(), rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}>
  30:     0x7fc71a6853f7 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items
  31:     0x7fc71a69687a - rustc_monomorphize[a6ed58b846fc6559]::partitioning::collect_and_partition_mono_items
  32:     0x7fc71be798d2 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::try_execute_query::<rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt, rustc_query_system[13b902c4efeb0e52]::query::caches::DefaultCache<(), (&std[deebe81a6960dd3c]::collections::hash::set::HashSet<rustc_span[b828b7112f1d25f2]::def_id::DefId, core[ad976174ce31ff9]::hash::BuildHasherDefault<rustc_hash[f08e1d26a6e2cc74]::FxHasher>>, &[rustc_middle[ecf285994cf87b1c]::mir::mono::CodegenUnit])>>
  33:     0x7fc71bf4bdfa - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::collect_and_partition_mono_items, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  34:     0x7fc71ba71219 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::collect_and_partition_mono_items
  35:     0x7fc71a48f6ed - rustc_codegen_ssa[ed3b08cdcbcc0128]::base::codegen_crate::<rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend>
  36:     0x7fc71a54668d - <rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend as rustc_codegen_ssa[ed3b08cdcbcc0128]::traits::backend::CodegenBackend>::codegen_crate
  37:     0x7fc71a3b716b - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_interface[2068bcb7cb6bfb23]::passes::start_codegen::{closure#0}>
  38:     0x7fc71a37c32c - <rustc_interface[2068bcb7cb6bfb23]::passes::QueryContext>::enter::<<rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ad976174ce31ff9]::result::Result<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  39:     0x7fc71a36146d - <rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen
  40:     0x7fc71a2444ef - <rustc_interface[2068bcb7cb6bfb23]::interface::Compiler>::enter::<rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}::{closure#2}, core[ad976174ce31ff9]::result::Result<core[ad976174ce31ff9]::option::Option<rustc_interface[2068bcb7cb6bfb23]::queries::Linker>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  41:     0x7fc71a234471 - rustc_span[b828b7112f1d25f2]::with_source_map::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#1}>
  42:     0x7fc71a246f1a - rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>
  43:     0x7fc71a22e3a2 - <scoped_tls[ff7f2889da7e8bff]::ScopedKey<rustc_span[b828b7112f1d25f2]::SessionGlobals>>::set::<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  44:     0x7fc71a2660cf - std[deebe81a6960dd3c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  45:     0x7fc71a29d84e - std[deebe81a6960dd3c]::panicking::try::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  46:     0x7fc71a267c02 - <<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1} as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fc7198969e5 - std::sys::unix::thread::Thread::new::thread_start::h4deef73939f2999d
  48:     0x7fc713de1609 - start_thread
  49:     0x7fc7196f4133 - clone
  50:                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 (d039643f7 2022-08-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0
query stack during panic:
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `core::convert::AsRef` fulfills its obligations
#1 [resolve_instance] resolving instance `<[u8; _] as core::convert::AsRef<[u8]>>::as_ref`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
------------------------------------------


---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-82268.rs stdout ----
---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-82268.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/const-generics/generic_const_exprs/issue-82268.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-82268" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-82268/auxiliary"
stdout: none
--- stderr -------------------------------
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Binder(<(i32, (char, ())) as Collate<CollateOpImpl<{ MASK >> 1 }>>>, [])`,
 right: `Binder(<(i32, (char, ())) as Collate<CollateOpImpl<2>>>, [])`', compiler/rustc_trait_selection/src/traits/codegen.rs:27:5
stack backtrace:
   0:     0x7f2d45091f9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be032c13d1a1fb4
   1:     0x7f2d450f89f8 - core::fmt::write::hd39ffdcfa24baa9b
   2:     0x7f2d450825b1 - std::io::Write::write_fmt::h4d70e6116713ca0d
   3:     0x7f2d45094f5e - std::panicking::default_hook::{{closure}}::h9254ffceb515c6fc
   4:     0x7f2d45094c1f - std::panicking::default_hook::h49ef3f212db503e7
   5:     0x7f2d45a4c864 - rustc_driver[c0255ac83e4c1fad]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:     0x7f2d45095712 - std::panicking::rust_panic_with_hook::ha9463a82d3d96cfd
   7:     0x7f2d45095537 - std::panicking::begin_panic_handler::{{closure}}::hdd83b3b3088b185d
   8:     0x7f2d45092514 - std::sys_common::backtrace::__rust_end_short_backtrace::h34f288e12f47d353
   9:     0x7f2d45095202 - rust_begin_unwind
  10:     0x7f2d45044e13 - core::panicking::panic_fmt::haa22a95a317e8953
  11:     0x7f2d450f4e28 - core::panicking::assert_failed_inner::hd180275305e23e71
  12:     0x7f2d459cb8b4 - core[ad976174ce31ff9]::panicking::assert_failed::<rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>, rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>>
  13:     0x7f2d4816b401 - rustc_trait_selection[58e009e87374326d]::traits::codegen::codegen_fulfill_obligation
  14:     0x7f2d4774ae91 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::codegen_fulfill_obligation, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  15:     0x7f2d4725c3f2 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::codegen_fulfill_obligation
  16:     0x7f2d4672df8d - rustc_ty_utils[a98a7c6729381d88]::instance::inner_resolve_instance
  17:     0x7f2d4672d3f0 - rustc_ty_utils[a98a7c6729381d88]::instance::resolve_instance
  18:     0x7f2d4771b9c8 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::resolve_instance, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  19:     0x7f2d472849ff - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::resolve_instance
  20:     0x7f2d484540c4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve_opt_const_arg
  21:     0x7f2d48453cc4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve
  22:     0x7f2d45e8bf1e - <rustc_monomorphize[a6ed58b846fc6559]::collector::MirNeighborCollector as rustc_middle[ecf285994cf87b1c]::mir::visit::Visitor>::visit_terminator
  23:     0x7f2d45e97b4d - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_neighbours
  24:     0x7f2d45e92a8a - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  25:     0x7f2d45e92fd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  26:     0x7f2d45e92fd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  27:     0x7f2d45e9ed0d - <core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once
  28:     0x7f2d45ed6ec5 - std[deebe81a6960dd3c]::panicking::try::<(), core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}>>
  29:     0x7f2d45eb1a2e - rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in::<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  30:     0x7f2d45ed60eb - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<(), rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}>
  31:     0x7f2d45e8f3f7 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items
  32:     0x7f2d45ea087a - rustc_monomorphize[a6ed58b846fc6559]::partitioning::collect_and_partition_mono_items
  33:     0x7f2d476838d2 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::try_execute_query::<rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt, rustc_query_system[13b902c4efeb0e52]::query::caches::DefaultCache<(), (&std[deebe81a6960dd3c]::collections::hash::set::HashSet<rustc_span[b828b7112f1d25f2]::def_id::DefId, core[ad976174ce31ff9]::hash::BuildHasherDefault<rustc_hash[f08e1d26a6e2cc74]::FxHasher>>, &[rustc_middle[ecf285994cf87b1c]::mir::mono::CodegenUnit])>>
  34:     0x7f2d47755dfa - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::collect_and_partition_mono_items, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  35:     0x7f2d4727b219 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::collect_and_partition_mono_items
  36:     0x7f2d45c996ed - rustc_codegen_ssa[ed3b08cdcbcc0128]::base::codegen_crate::<rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend>
  37:     0x7f2d45d5068d - <rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend as rustc_codegen_ssa[ed3b08cdcbcc0128]::traits::backend::CodegenBackend>::codegen_crate
  38:     0x7f2d45bc116b - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_interface[2068bcb7cb6bfb23]::passes::start_codegen::{closure#0}>
  39:     0x7f2d45b8632c - <rustc_interface[2068bcb7cb6bfb23]::passes::QueryContext>::enter::<<rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ad976174ce31ff9]::result::Result<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  40:     0x7f2d45b6b46d - <rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen
  41:     0x7f2d45a4e4ef - <rustc_interface[2068bcb7cb6bfb23]::interface::Compiler>::enter::<rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}::{closure#2}, core[ad976174ce31ff9]::result::Result<core[ad976174ce31ff9]::option::Option<rustc_interface[2068bcb7cb6bfb23]::queries::Linker>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  42:     0x7f2d45a3e471 - rustc_span[b828b7112f1d25f2]::with_source_map::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#1}>
  43:     0x7f2d45a50f1a - rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>
  44:     0x7f2d45a383a2 - <scoped_tls[ff7f2889da7e8bff]::ScopedKey<rustc_span[b828b7112f1d25f2]::SessionGlobals>>::set::<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  45:     0x7f2d45a700cf - std[deebe81a6960dd3c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  46:     0x7f2d45aa784e - std[deebe81a6960dd3c]::panicking::try::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  47:     0x7f2d45a71c02 - <<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1} as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  48:     0x7f2d450a09e5 - std::sys::unix::thread::Thread::new::thread_start::h4deef73939f2999d
  49:     0x7f2d3f5eb609 - start_thread
  50:     0x7f2d44efe133 - clone
  51:                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 (d039643f7 2022-08-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0
query stack during panic:
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `Collate` fulfills its obligations
#1 [resolve_instance] resolving instance `<(i32, (char, ())) as Collate<CollateOpImpl<{ MASK >> 1 }>>>::collate`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
------------------------------------------


---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-86710.rs stdout ----
---- [ui] src/test/ui/const-generics/generic_const_exprs/issue-86710.rs stdout ----

error: test compilation failed although it shouldn't!
status: exit status: 101
command: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/src/test/ui/const-generics/generic_const_exprs/issue-86710.rs" "-Zthreads=1" "--target=x86_64-unknown-linux-gnu" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Cstrip=debuginfo" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-86710" "-A" "unused" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/ui/const-generics/generic_const_exprs/issue-86710/auxiliary"
stdout: none
--- stderr -------------------------------
thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `Binder(<BarImpl<{ N + M }> as Bar>, [])`,
 right: `Binder(<BarImpl<2> as Bar>, [])`', compiler/rustc_trait_selection/src/traits/codegen.rs:27:5
stack backtrace:
   0:     0x7fa17c588f9c - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h8be032c13d1a1fb4
   1:     0x7fa17c5ef9f8 - core::fmt::write::hd39ffdcfa24baa9b
   2:     0x7fa17c5795b1 - std::io::Write::write_fmt::h4d70e6116713ca0d
   3:     0x7fa17c58bf5e - std::panicking::default_hook::{{closure}}::h9254ffceb515c6fc
   4:     0x7fa17c58bc1f - std::panicking::default_hook::h49ef3f212db503e7
   5:     0x7fa17cf43864 - rustc_driver[c0255ac83e4c1fad]::DEFAULT_HOOK::{closure#0}::{closure#0}
   6:     0x7fa17c58c712 - std::panicking::rust_panic_with_hook::ha9463a82d3d96cfd
   7:     0x7fa17c58c537 - std::panicking::begin_panic_handler::{{closure}}::hdd83b3b3088b185d
   8:     0x7fa17c589514 - std::sys_common::backtrace::__rust_end_short_backtrace::h34f288e12f47d353
   9:     0x7fa17c58c202 - rust_begin_unwind
  10:     0x7fa17c53be13 - core::panicking::panic_fmt::haa22a95a317e8953
  11:     0x7fa17c5ebe28 - core::panicking::assert_failed_inner::hd180275305e23e71
  12:     0x7fa17cec28b4 - core[ad976174ce31ff9]::panicking::assert_failed::<rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>, rustc_middle[ecf285994cf87b1c]::ty::sty::Binder<rustc_middle[ecf285994cf87b1c]::ty::sty::TraitRef>>
  13:     0x7fa17f662401 - rustc_trait_selection[58e009e87374326d]::traits::codegen::codegen_fulfill_obligation
  14:     0x7fa17ec41e91 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::codegen_fulfill_obligation, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  15:     0x7fa17e7533f2 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::codegen_fulfill_obligation
  16:     0x7fa17dc24f8d - rustc_ty_utils[a98a7c6729381d88]::instance::inner_resolve_instance
  17:     0x7fa17dc243f0 - rustc_ty_utils[a98a7c6729381d88]::instance::resolve_instance
  18:     0x7fa17ec129c8 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::resolve_instance, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  19:     0x7fa17e77b9ff - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::resolve_instance
  20:     0x7fa17f94b0c4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve_opt_const_arg
  21:     0x7fa17f94acc4 - <rustc_middle[ecf285994cf87b1c]::ty::instance::Instance>::resolve
  22:     0x7fa17d382f1e - <rustc_monomorphize[a6ed58b846fc6559]::collector::MirNeighborCollector as rustc_middle[ecf285994cf87b1c]::mir::visit::Visitor>::visit_terminator
  23:     0x7fa17d38eb4d - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_neighbours
  24:     0x7fa17d389a8a - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  25:     0x7fa17d389fd9 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_items_rec
  26:     0x7fa17d395d0d - <core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}> as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once
  27:     0x7fa17d3cdec5 - std[deebe81a6960dd3c]::panicking::try::<(), core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>::{closure#0}::{closure#0}>>
  28:     0x7fa17d3a8a2e - rustc_data_structures[807f4c38b5ae8e00]::sync::par_for_each_in::<alloc[7987977c070a7f21]::vec::Vec<rustc_middle[ecf285994cf87b1c]::mir::mono::MonoItem>, rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}::{closure#0}>
  29:     0x7fa17d3cd0eb - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<(), rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items::{closure#1}>
  30:     0x7fa17d3863f7 - rustc_monomorphize[a6ed58b846fc6559]::collector::collect_crate_mono_items
  31:     0x7fa17d39787a - rustc_monomorphize[a6ed58b846fc6559]::partitioning::collect_and_partition_mono_items
  32:     0x7fa17eb7a8d2 - rustc_query_system[13b902c4efeb0e52]::query::plumbing::try_execute_query::<rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt, rustc_query_system[13b902c4efeb0e52]::query::caches::DefaultCache<(), (&std[deebe81a6960dd3c]::collections::hash::set::HashSet<rustc_span[b828b7112f1d25f2]::def_id::DefId, core[ad976174ce31ff9]::hash::BuildHasherDefault<rustc_hash[f08e1d26a6e2cc74]::FxHasher>>, &[rustc_middle[ecf285994cf87b1c]::mir::mono::CodegenUnit])>>
  33:     0x7fa17ec4cdfa - rustc_query_system[13b902c4efeb0e52]::query::plumbing::get_query::<rustc_query_impl[dcb8d6f4716e4abb]::queries::collect_and_partition_mono_items, rustc_query_impl[dcb8d6f4716e4abb]::plumbing::QueryCtxt>
  34:     0x7fa17e772219 - <rustc_query_impl[dcb8d6f4716e4abb]::Queries as rustc_middle[ecf285994cf87b1c]::ty::query::QueryEngine>::collect_and_partition_mono_items
  35:     0x7fa17d1906ed - rustc_codegen_ssa[ed3b08cdcbcc0128]::base::codegen_crate::<rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend>
  36:     0x7fa17d24768d - <rustc_codegen_llvm[67694754f7026662]::LlvmCodegenBackend as rustc_codegen_ssa[ed3b08cdcbcc0128]::traits::backend::CodegenBackend>::codegen_crate
  37:     0x7fa17d0b816b - <rustc_session[3ba4c244d18b8cb8]::session::Session>::time::<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_interface[2068bcb7cb6bfb23]::passes::start_codegen::{closure#0}>
  38:     0x7fa17d07d32c - <rustc_interface[2068bcb7cb6bfb23]::passes::QueryContext>::enter::<<rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[ad976174ce31ff9]::result::Result<alloc[7987977c070a7f21]::boxed::Box<dyn core[ad976174ce31ff9]::any::Any>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  39:     0x7fa17d06246d - <rustc_interface[2068bcb7cb6bfb23]::queries::Queries>::ongoing_codegen
  40:     0x7fa17cf454ef - <rustc_interface[2068bcb7cb6bfb23]::interface::Compiler>::enter::<rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}::{closure#2}, core[ad976174ce31ff9]::result::Result<core[ad976174ce31ff9]::option::Option<rustc_interface[2068bcb7cb6bfb23]::queries::Linker>, rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  41:     0x7fa17cf35471 - rustc_span[b828b7112f1d25f2]::with_source_map::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#1}>
  42:     0x7fa17cf47f1a - rustc_interface[2068bcb7cb6bfb23]::interface::create_compiler_and_run::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>
  43:     0x7fa17cf2f3a2 - <scoped_tls[ff7f2889da7e8bff]::ScopedKey<rustc_span[b828b7112f1d25f2]::SessionGlobals>>::set::<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  44:     0x7fa17cf670cf - std[deebe81a6960dd3c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>
  45:     0x7fa17cf9e84e - std[deebe81a6960dd3c]::panicking::try::<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, core[ad976174ce31ff9]::panic::unwind_safe::AssertUnwindSafe<<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1}::{closure#0}>>
  46:     0x7fa17cf68c02 - <<std[deebe81a6960dd3c]::thread::Builder>::spawn_unchecked_<rustc_interface[2068bcb7cb6bfb23]::util::run_in_thread_pool_with_globals<rustc_interface[2068bcb7cb6bfb23]::interface::run_compiler<core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>, rustc_driver[c0255ac83e4c1fad]::run_compiler::{closure#1}>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#0}, core[ad976174ce31ff9]::result::Result<(), rustc_errors[9e39027d1e9da959]::ErrorGuaranteed>>::{closure#1} as core[ad976174ce31ff9]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fa17c5979e5 - std::sys::unix::thread::Thread::new::thread_start::h4deef73939f2999d
  48:     0x7fa176ae2609 - start_thread
  49:     0x7fa17c3f5133 - clone
  50:                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 (d039643f7 2022-08-09) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z threads=1 -C codegen-units=1 -Z ui-testing -Z deduplicate-diagnostics=no -C strip=debuginfo -C prefer-dynamic -C rpath -C debuginfo=0
query stack during panic:
query stack during panic:
#0 [codegen_fulfill_obligation] checking if `Bar` fulfills its obligations
#1 [resolve_instance] resolving instance `<BarImpl<{ N + M }> as Bar>::error_occurs_here`
#2 [collect_and_partition_mono_items] collect_and_partition_mono_items
------------------------------------------

@compiler-errors
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Actually, this is the wrong approach I think.

@compiler-errors compiler-errors mentioned this pull request Aug 9, 2022
Merged
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 11, 2022
@bors
Auto merge of rust-lang#100315 - compiler-errors:norm-ct-in-proj, r=lcnr
aeb5067 
Keep going if normalized projection has unevaluated consts in `QueryNormalizer`

rust-lang#100312 was the wrong approach, I think this is the right one.

When normalizing a type, if we see that it's a projection, we currently defer to `tcx.normalize_projection_ty`, which normalizes the projections away but doesn't touch the unevaluated constants. So now we just continue to fold the type if it has unevaluated constants so we make sure to evaluate those too, if we can.

Fixes rust-lang#100217
Fixes rust-lang#83972
Fixes rust-lang#84669
Fixes rust-lang#86710
Fixes rust-lang#82268
Fixes rust-lang#73298
@compiler-errors compiler-errors deleted the normalize-consts-in-mangle branch August 11, 2023 20:11
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