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ICE with inherent associated type: Type parameter out of range when substituting #104240

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fmease opened this issue Nov 10, 2022 · 1 comment · Fixed by #105224
Closed

ICE with inherent associated type: Type parameter out of range when substituting #104240

fmease opened this issue Nov 10, 2022 · 1 comment · Fixed by #105224
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@cjgillot
Labels
A-associated-items Area: Associated items (types, constants & functions) C-bug Category: This is a bug. F-inherent_associated_types `#![feature(inherent_associated_types)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@fmease
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fmease commented Nov 10, 2022 •
edited
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Code

#![feature(inherent_associated_types)]
#![allow(incomplete_features)]

struct S<T>(T);

impl<T> S<T> {
    type P = T;
}

fn main() {
    type A = S<()>::P;
    let _: A = ();
}

Output

error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:726:9: type parameter `T/#0` (T/0) out of range when substituting, substs=[]

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/compiler/rustc_errors/src/lib.rs:1551:9
backtrace 
stack backtrace:
   0:     0x7f3ff7282280 - std::backtrace_rs::backtrace::libunwind::trace::h90130e9f1ec9d9fc
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f3ff7282280 - std::backtrace_rs::backtrace::trace_unsynchronized::h40c4f6d986aff2e4
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f3ff7282280 - std::sys_common::backtrace::_print_fmt::h3822369be0084f83
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f3ff7282280 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdae4626daadc9f71
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f3ff33c84fe - core::fmt::write::h05cdd281d08b9d01
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/fmt/mod.rs:1209:17
   5:     0x7f3ff7276365 - std::io::Write::write_fmt::h8e1559869183c8bb
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/io/mod.rs:1682:15
   6:     0x7f3ff7282045 - std::sys_common::backtrace::_print::h61ba1afc98d46ffd
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f3ff7282045 - std::sys_common::backtrace::print::he9728762d292043e
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f3ff728435f - std::panicking::default_hook::{{closure}}::h726bafb7da990095
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:267:22
   9:     0x7f3ff728409a - std::panicking::default_hook::hdc60b442b1844a68
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:286:9
  10:     0x7f3ff6503a14 - rustc_driver[b81881107b3cefb1]::DEFAULT_HOOK::{closure#0}::{closure#0}
  11:     0x7f3ff7284b4d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3db297037157cab4
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2032:9
  12:     0x7f3ff7284b4d - std::panicking::rust_panic_with_hook::hc98185590f941643
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:692:13
  13:     0x7f3ff696abb1 - std[23e74d0f7912c00c]::panicking::begin_panic::<rustc_errors[43d68c63b698f7a8]::ExplicitBug>::{closure#0}
  14:     0x7f3ff6969c76 - std[23e74d0f7912c00c]::sys_common::backtrace::__rust_end_short_backtrace::<std[23e74d0f7912c00c]::panicking::begin_panic<rustc_errors[43d68c63b698f7a8]::ExplicitBug>::{closure#0}, !>
  15:     0x7f3ff69c59c6 - std[23e74d0f7912c00c]::panicking::begin_panic::<rustc_errors[43d68c63b698f7a8]::ExplicitBug>
  16:     0x7f3ff6967156 - std[23e74d0f7912c00c]::panic::panic_any::<rustc_errors[43d68c63b698f7a8]::ExplicitBug>
  17:     0x7f3ff6967044 - <rustc_errors[43d68c63b698f7a8]::HandlerInner>::bug::<&alloc[e7e939941d2090cd]::string::String>
  18:     0x7f3ff6966aa0 - <rustc_errors[43d68c63b698f7a8]::Handler>::bug::<&alloc[e7e939941d2090cd]::string::String>
  19:     0x7f3ff6a33dad - rustc_middle[749c6e76ccc44e50]::ty::context::tls::with_context_opt::<rustc_middle[749c6e76ccc44e50]::ty::context::tls::with_opt<rustc_middle[749c6e76ccc44e50]::util::bug::opt_span_bug_fmt<rustc_span[7a6d98bdad94076d]::span_encoding::Span>::{closure#0}, ()>::{closure#0}, ()>
  20:     0x7f3ff6a33f36 - rustc_middle[749c6e76ccc44e50]::util::bug::opt_span_bug_fmt::<rustc_span[7a6d98bdad94076d]::span_encoding::Span>
  21:     0x7f3ff484bc93 - rustc_middle[749c6e76ccc44e50]::util::bug::bug_fmt
  22:     0x7f3ff6a173b2 - <rustc_middle[749c6e76ccc44e50]::ty::subst::SubstFolder>::type_param_out_of_range
  23:     0x7f3ff52c2afd - <dyn rustc_hir_analysis[49cd1ee7bf54876a]::astconv::AstConv>::res_to_ty
  24:     0x7f3ff52b72b9 - <dyn rustc_hir_analysis[49cd1ee7bf54876a]::astconv::AstConv>::ast_ty_to_ty_inner::{closure#0}
  25:     0x7f3ff46a846a - <rustc_hir_typeck[db678d77eac03692]::gather_locals::GatherLocalsVisitor>::declare
  26:     0x7f3ff46a81c7 - <rustc_hir_typeck[db678d77eac03692]::gather_locals::GatherLocalsVisitor as rustc_hir[6eccaaf6354731e0]::intravisit::Visitor>::visit_expr
  27:     0x7f3ff4e58de2 - rustc_hir_typeck[db678d77eac03692]::check::check_fn
  28:     0x7f3ff4e445ff - rustc_hir_typeck[db678d77eac03692]::typeck
  29:     0x7f3ff4ac960d - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<rustc_span[7a6d98bdad94076d]::def_id::LocalDefId, &rustc_middle[749c6e76ccc44e50]::ty::context::TypeckResults>>
  30:     0x7f3ff5d1ff38 - rustc_data_structures[a81ff103cbb29bfb]::sync::par_for_each_in::<&[rustc_span[7a6d98bdad94076d]::def_id::LocalDefId], <rustc_middle[749c6e76ccc44e50]::hir::map::Map>::par_body_owners<rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies::{closure#0}>::{closure#0}>
  31:     0x7f3ff5d1fc13 - rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies
  32:     0x7f3ff5c0912a - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), ()>>
  33:     0x7f3ff5c08e27 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::typeck_item_bodies, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  34:     0x7f3ff49b95ca - <rustc_session[8022550fdac32630]::session::Session>::time::<(), rustc_hir_analysis[49cd1ee7bf54876a]::check_crate::{closure#7}>
  35:     0x7f3ff49b878b - rustc_hir_analysis[49cd1ee7bf54876a]::check_crate
  36:     0x7f3ff49b83bb - rustc_interface[74ce99d2ea85b1]::passes::analysis
  37:     0x7f3ff5d77644 - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>>
  38:     0x7f3ff5d77347 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::analysis, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  39:     0x7f3ff57fb03d - <rustc_interface[74ce99d2ea85b1]::passes::QueryContext>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  40:     0x7f3ff57f75ff - <rustc_interface[74ce99d2ea85b1]::interface::Compiler>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}, core[c2065954f2d40e37]::result::Result<core[c2065954f2d40e37]::option::Option<rustc_interface[74ce99d2ea85b1]::queries::Linker>, rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  41:     0x7f3ff57f2672 - rustc_span[7a6d98bdad94076d]::with_source_map::<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  42:     0x7f3ff57f2169 - <scoped_tls[866d789ca631dc2f]::ScopedKey<rustc_span[7a6d98bdad94076d]::SessionGlobals>>::set::<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  43:     0x7f3ff57f1778 - std[23e74d0f7912c00c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  44:     0x7f3ff57f149c - <<std[23e74d0f7912c00c]::thread::Builder>::spawn_unchecked_<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#1} as core[c2065954f2d40e37]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  45:     0x7f3ff728ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he8eec53b13ee98a2
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  46:     0x7f3ff728ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h04d7374ad262fa8b
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  47:     0x7f3ff728ba83 - std::sys::unix::thread::Thread::new::thread_start::h0bc6cb3772aee1f7
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys/unix/thread.rs:108:17
  48:     0x7f3ff310d78d - <unknown>
  49:     0x7f3ff318e8e4 - clone
  50:                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 1.67.0-nightly (85f4f41de 2022-11-08) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [typeck] type-checking `main`
#1 [typeck_item_bodies] type-checking all item bodies
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error

Code (Variation)

#![feature(inherent_associated_types)]
#![allow(incomplete_features)]

struct S<T>(T);

impl<T> S<T> {
    type P = T;
}

fn main() {
    let _: S<()>::P = ();
}

Output

thread '<unnamed>' panicked at 'index out of bounds: the len is 0 but the index is 0', compiler/rustc_middle/src/ty/generics.rs:207:14
// BACKTRACE OMITTED
error: internal compiler error: the following error was constructed but not emitted

error[E0308]: mismatched types
  --> ice.rs:11:23
   |
11 |     let _: S<()>::P = ();
   |                       ^^ expected type parameter `T`, found `()`
   |
   = note: expected type parameter `T`
                   found unit type `()`

thread '<unnamed>' panicked at 'error was constructed but not emitted', compiler/rustc_errors/src/diagnostic_builder.rs:676:21
// BACKTRACE OMITTED
thread panicked while panicking. aborting.
[1]    260501 IOT instruction (core dumped)  rustc ice.rs
full stderr (two panics / backtraces) 
thread '<unnamed>' panicked at 'index out of bounds: the len is 0 but the index is 0', compiler/rustc_middle/src/ty/generics.rs:207:14
stack backtrace:
   0:     0x7fd657ed43e0 - std::backtrace_rs::backtrace::libunwind::trace::h90130e9f1ec9d9fc
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fd657ed43e0 - std::backtrace_rs::backtrace::trace_unsynchronized::h40c4f6d986aff2e4
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fd657ed43e0 - std::sys_common::backtrace::_print_fmt::h3822369be0084f83
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fd657ed43e0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdae4626daadc9f71
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fd657f364fe - core::fmt::write::h05cdd281d08b9d01
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/fmt/mod.rs:1209:17
   5:     0x7fd657ec4655 - std::io::Write::write_fmt::h8e1559869183c8bb
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/io/mod.rs:1682:15
   6:     0x7fd657ed41a5 - std::sys_common::backtrace::_print::h61ba1afc98d46ffd
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fd657ed41a5 - std::sys_common::backtrace::print::he9728762d292043e
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fd657ed6f7f - std::panicking::default_hook::{{closure}}::h726bafb7da990095
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:267:22
   9:     0x7fd657ed6cba - std::panicking::default_hook::hdc60b442b1844a68
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:286:9
  10:     0x7fd657ed778c - std::panicking::rust_panic_with_hook::hc98185590f941643
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:688:13
  11:     0x7fd657ed7527 - std::panicking::begin_panic_handler::{{closure}}::hefb3c8ca46058321
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:579:13
  12:     0x7fd657ed488c - std::sys_common::backtrace::__rust_end_short_backtrace::hb93f26550816602c
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7fd657ed7242 - rust_begin_unwind
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:575:5
  14:     0x7fd657f32ee3 - core::panicking::panic_fmt::h22b222f579eb1262
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/panicking.rs:65:14
  15:     0x7fd657f330b2 - core::panicking::panic_bounds_check::he1eceb0acc7c7551
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/panicking.rs:151:5
  16:     0x7fd65618e8ed - <rustc_middle[749c6e76ccc44e50]::ty::generics::Generics>::param_at
  17:     0x7fd65670c4fc - <rustc_middle[749c6e76ccc44e50]::ty::generics::Generics>::type_param
  18:     0x7fd6571eee97 - <rustc_middle[749c6e76ccc44e50]::ty::context::TyCtxt>::note_and_explain_type_err
  19:     0x7fd655faa86f - <rustc_infer[7d53ebe6f38c5f10]::infer::error_reporting::TypeErrCtxt>::note_type_err
  20:     0x7fd65700a2c3 - <rustc_infer[7d53ebe6f38c5f10]::infer::error_reporting::TypeErrCtxt>::report_and_explain_type_error
  21:     0x7fd6553d5075 - <rustc_infer[7d53ebe6f38c5f10]::infer::error_reporting::TypeErrCtxt>::report_mismatched_types
  22:     0x7fd65542b5c5 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::demand_coerce
  23:     0x7fd65540880d - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_decl
  24:     0x7fd6554058de - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_block_with_expected
  25:     0x7fd6553bccd0 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  26:     0x7fd6556613d6 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_return_expr
  27:     0x7fd65565938c - rustc_hir_typeck[db678d77eac03692]::check::check_fn
  28:     0x7fd6556445ff - rustc_hir_typeck[db678d77eac03692]::typeck
  29:     0x7fd6552c960d - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<rustc_span[7a6d98bdad94076d]::def_id::LocalDefId, &rustc_middle[749c6e76ccc44e50]::ty::context::TypeckResults>>
  30:     0x7fd65651ff38 - rustc_data_structures[a81ff103cbb29bfb]::sync::par_for_each_in::<&[rustc_span[7a6d98bdad94076d]::def_id::LocalDefId], <rustc_middle[749c6e76ccc44e50]::hir::map::Map>::par_body_owners<rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies::{closure#0}>::{closure#0}>
  31:     0x7fd65651fc13 - rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies
  32:     0x7fd65640912a - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), ()>>
  33:     0x7fd656408e27 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::typeck_item_bodies, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  34:     0x7fd6551b95ca - <rustc_session[8022550fdac32630]::session::Session>::time::<(), rustc_hir_analysis[49cd1ee7bf54876a]::check_crate::{closure#7}>
  35:     0x7fd6551b878b - rustc_hir_analysis[49cd1ee7bf54876a]::check_crate
  36:     0x7fd6551b83bb - rustc_interface[74ce99d2ea85b1]::passes::analysis
  37:     0x7fd656577644 - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>>
  38:     0x7fd656577347 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::analysis, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  39:     0x7fd655ffb03d - <rustc_interface[74ce99d2ea85b1]::passes::QueryContext>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  40:     0x7fd655ff75ff - <rustc_interface[74ce99d2ea85b1]::interface::Compiler>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}, core[c2065954f2d40e37]::result::Result<core[c2065954f2d40e37]::option::Option<rustc_interface[74ce99d2ea85b1]::queries::Linker>, rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  41:     0x7fd655ff2672 - rustc_span[7a6d98bdad94076d]::with_source_map::<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  42:     0x7fd655ff2169 - <scoped_tls[866d789ca631dc2f]::ScopedKey<rustc_span[7a6d98bdad94076d]::SessionGlobals>>::set::<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  43:     0x7fd655ff1778 - std[23e74d0f7912c00c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  44:     0x7fd655ff149c - <<std[23e74d0f7912c00c]::thread::Builder>::spawn_unchecked_<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#1} as core[c2065954f2d40e37]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  45:     0x7fd657a8ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he8eec53b13ee98a2
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  46:     0x7fd657a8ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h04d7374ad262fa8b
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  47:     0x7fd657a8ba83 - std::sys::unix::thread::Thread::new::thread_start::h0bc6cb3772aee1f7
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys/unix/thread.rs:108:17
  48:     0x7fd653aa278d - <unknown>
  49:     0x7fd653b238e4 - clone
  50:                0x0 - <unknown>
error: internal compiler error: the following error was constructed but not emitted

error[E0308]: mismatched types
  --> ice.rs:11:23
   |
11 |     let _: S<()>::P = ();
   |                       ^^ expected type parameter `T`, found `()`
   |
   = note: expected type parameter `T`
                   found unit type `()`

thread '<unnamed>' panicked at 'error was constructed but not emitted', compiler/rustc_errors/src/diagnostic_builder.rs:676:21
stack backtrace:
   0:     0x7fd657ed43e0 - std::backtrace_rs::backtrace::libunwind::trace::h90130e9f1ec9d9fc
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fd657ed43e0 - std::backtrace_rs::backtrace::trace_unsynchronized::h40c4f6d986aff2e4
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fd657ed43e0 - std::sys_common::backtrace::_print_fmt::h3822369be0084f83
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fd657ed43e0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdae4626daadc9f71
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fd657f364fe - core::fmt::write::h05cdd281d08b9d01
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/fmt/mod.rs:1209:17
   5:     0x7fd657ec4655 - std::io::Write::write_fmt::h8e1559869183c8bb
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/io/mod.rs:1682:15
   6:     0x7fd657ed41a5 - std::sys_common::backtrace::_print::h61ba1afc98d46ffd
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7fd657ed41a5 - std::sys_common::backtrace::print::he9728762d292043e
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7fd657ed6f7f - std::panicking::default_hook::{{closure}}::h726bafb7da990095
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:267:22
   9:     0x7fd657ed6cba - std::panicking::default_hook::hdc60b442b1844a68
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:286:9
  10:     0x7fd657ed778c - std::panicking::rust_panic_with_hook::hc98185590f941643
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:688:13
  11:     0x7fd657ed74e1 - std::panicking::begin_panic_handler::{{closure}}::hefb3c8ca46058321
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:577:13
  12:     0x7fd657ed488c - std::sys_common::backtrace::__rust_end_short_backtrace::hb93f26550816602c
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7fd657ed7242 - rust_begin_unwind
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/panicking.rs:575:5
  14:     0x7fd657f32ee3 - core::panicking::panic_fmt::h22b222f579eb1262
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/core/src/panicking.rs:65:14
  15:     0x7fd655814d0b - <rustc_errors[43d68c63b698f7a8]::diagnostic_builder::DiagnosticBuilderInner as core[c2065954f2d40e37]::ops::drop::Drop>::drop
  16:     0x7fd656ffdf9d - core[c2065954f2d40e37]::ptr::drop_in_place::<rustc_errors[43d68c63b698f7a8]::diagnostic_builder::DiagnosticBuilder<rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  17:     0x7fd65700a916 - <rustc_infer[7d53ebe6f38c5f10]::infer::error_reporting::TypeErrCtxt>::report_and_explain_type_error
  18:     0x7fd6553d5075 - <rustc_infer[7d53ebe6f38c5f10]::infer::error_reporting::TypeErrCtxt>::report_mismatched_types
  19:     0x7fd65542b5c5 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::demand_coerce
  20:     0x7fd65540880d - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_decl
  21:     0x7fd6554058de - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_block_with_expected
  22:     0x7fd6553bccd0 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
  23:     0x7fd6556613d6 - <rustc_hir_typeck[db678d77eac03692]::fn_ctxt::FnCtxt>::check_return_expr
  24:     0x7fd65565938c - rustc_hir_typeck[db678d77eac03692]::check::check_fn
  25:     0x7fd6556445ff - rustc_hir_typeck[db678d77eac03692]::typeck
  26:     0x7fd6552c960d - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<rustc_span[7a6d98bdad94076d]::def_id::LocalDefId, &rustc_middle[749c6e76ccc44e50]::ty::context::TypeckResults>>
  27:     0x7fd65651ff38 - rustc_data_structures[a81ff103cbb29bfb]::sync::par_for_each_in::<&[rustc_span[7a6d98bdad94076d]::def_id::LocalDefId], <rustc_middle[749c6e76ccc44e50]::hir::map::Map>::par_body_owners<rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies::{closure#0}>::{closure#0}>
  28:     0x7fd65651fc13 - rustc_hir_typeck[db678d77eac03692]::typeck_item_bodies
  29:     0x7fd65640912a - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), ()>>
  30:     0x7fd656408e27 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::typeck_item_bodies, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  31:     0x7fd6551b95ca - <rustc_session[8022550fdac32630]::session::Session>::time::<(), rustc_hir_analysis[49cd1ee7bf54876a]::check_crate::{closure#7}>
  32:     0x7fd6551b878b - rustc_hir_analysis[49cd1ee7bf54876a]::check_crate
  33:     0x7fd6551b83bb - rustc_interface[74ce99d2ea85b1]::passes::analysis
  34:     0x7fd656577644 - rustc_query_system[29c74e3a9648926f]::query::plumbing::try_execute_query::<rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt, rustc_query_system[29c74e3a9648926f]::query::caches::DefaultCache<(), core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>>
  35:     0x7fd656577347 - rustc_query_system[29c74e3a9648926f]::query::plumbing::get_query::<rustc_query_impl[80af96805dfbd2fb]::queries::analysis, rustc_query_impl[80af96805dfbd2fb]::plumbing::QueryCtxt>
  36:     0x7fd655ffb03d - <rustc_interface[74ce99d2ea85b1]::passes::QueryContext>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}::{closure#3}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  37:     0x7fd655ff75ff - <rustc_interface[74ce99d2ea85b1]::interface::Compiler>::enter::<rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}::{closure#2}, core[c2065954f2d40e37]::result::Result<core[c2065954f2d40e37]::option::Option<rustc_interface[74ce99d2ea85b1]::queries::Linker>, rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  38:     0x7fd655ff2672 - rustc_span[7a6d98bdad94076d]::with_source_map::<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}::{closure#1}>
  39:     0x7fd655ff2169 - <scoped_tls[866d789ca631dc2f]::ScopedKey<rustc_span[7a6d98bdad94076d]::SessionGlobals>>::set::<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  40:     0x7fd655ff1778 - std[23e74d0f7912c00c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>
  41:     0x7fd655ff149c - <<std[23e74d0f7912c00c]::thread::Builder>::spawn_unchecked_<rustc_interface[74ce99d2ea85b1]::util::run_in_thread_pool_with_globals<rustc_interface[74ce99d2ea85b1]::interface::run_compiler<core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>, rustc_driver[b81881107b3cefb1]::run_compiler::{closure#1}>::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c2065954f2d40e37]::result::Result<(), rustc_errors[43d68c63b698f7a8]::ErrorGuaranteed>>::{closure#1} as core[c2065954f2d40e37]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  42:     0x7fd657a8ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he8eec53b13ee98a2
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  43:     0x7fd657a8ba83 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h04d7374ad262fa8b
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/alloc/src/boxed.rs:2000:9
  44:     0x7fd657a8ba83 - std::sys::unix::thread::Thread::new::thread_start::h0bc6cb3772aee1f7
                               at /rustc/85f4f41deb1557ca8ab228319d33003dd2f20f45/library/std/src/sys/unix/thread.rs:108:17
  45:     0x7fd653aa278d - <unknown>
  46:     0x7fd653b238e4 - clone
  47:                0x0 - <unknown>
thread panicked while panicking. aborting.
[1]    260501 IOT instruction (core dumped)  rustc ice.rs

Meta

rustc --version --verbose:

rustc 1.67.0-nightly (85f4f41de 2022-11-08)
binary: rustc
commit-hash: 85f4f41deb1557ca8ab228319d33003dd2f20f45
commit-date: 2022-11-08
host: x86_64-unknown-linux-gnu
release: 1.67.0-nightly
LLVM version: 15.0.4

@rustbot label requires-nightly A-associated-items F-inherent_associated_types
@fmease fmease 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 Nov 10, 2022
@rustbot rustbot added A-associated-items Area: Associated items (types, constants & functions) F-inherent_associated_types `#![feature(inherent_associated_types)]` requires-nightly This issue requires a nightly compiler in some way. labels Nov 10, 2022
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fmease commented Nov 10, 2022 •
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Context: The recent PR #103621 implemented the resolution of inherent associated types but it appears that parameter substitution was overlooked.

@cjgillot cjgillot self-assigned this Dec 3, 2022
@cjgillot cjgillot mentioned this issue Dec 3, 2022
Merged
@bors bors closed this as completed in f2e223c Dec 4, 2022
@Rageking8 Rageking8 mentioned this issue Dec 5, 2022
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A-associated-items Area: Associated items (types, constants & functions) C-bug Category: This is a bug. F-inherent_associated_types `#![feature(inherent_associated_types)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Properly substitute inherent associated types. cjgillot/rust
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@cjgillot @fmease @rustbot