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ICE: wfchk: type parameter .. out of range when instantiating, args=[{const error}] #126182

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matthiaskrgr opened this issue Jun 9, 2024 · 3 comments · Fixed by #135195
Closed

ICE: wfchk: type parameter .. out of range when instantiating, args=[{const error}] #126182

matthiaskrgr opened this issue Jun 9, 2024 · 3 comments · Fixed by #135195
Labels
C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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matthiaskrgr commented Jun 9, 2024 •
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auto-reduced (treereduce-rust):

#![feature(generic_const_exprs)]

trait Ret {
    type R;
}

struct Cond<const PRED: bool, U, V>(std::marker::PhantomData<U>);

struct RobinHashTable<const MAX_LENGTH: usize, CellIdx = <Cond<{}, usize, u32> as Ret>::R> {}

impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}

original:

#![feature(generic_const_exprs)]

trait Ret {
    type R;
}

struct Cond<const PRED: bool, U, V>(std::marker::PhantomData<U>, );

struct RobinHashTable<
    const MAX_LENGTH: usize,
    CellIdx = <Cond<{  }, usize, u32> as Ret>::R,
> {}

impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}

Version information

rustc 1.81.0-nightly (13423befc 2024-06-09)
binary: rustc
commit-hash: 13423befc40fffe23ccc6dd06868142cff9428fe
commit-date: 2024-06-09
host: x86_64-unknown-linux-gnu
release: 1.81.0-nightly
LLVM version: 18.1.7

Command:
/home/matthias/.rustup/toolchains/master/bin/rustc

Program output 

error[E0405]: cannot find trait `HashMapBase` in this scope
  --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:15
   |
11 | impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}
   |               ^^^^^^^^^^^ not found in this scope

error[E0412]: cannot find type `MAX_LENGTH` in this scope
  --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:55
   |
11 | impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}
   |                                                       ^^^^^^^^^^ not found in this scope
   |
help: you might be missing a type parameter
   |
11 | impl<CellIdx, MAX_LENGTH> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}
   |             ++++++++++++

warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
 --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:1:12
  |
1 | #![feature(generic_const_exprs)]
  |            ^^^^^^^^^^^^^^^^^^^
  |
  = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
  = note: `#[warn(incomplete_features)]` on by default

error[E0601]: `main` function not found in crate `mvce`
  --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:78
   |
11 | impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}
   |                                                                              ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs`

error[E0392]: type parameter `V` is never used
 --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:7:34
  |
7 | struct Cond<const PRED: bool, U, V>(std::marker::PhantomData<U>);
  |                                  ^ unused type parameter
  |
  = help: consider removing `V`, referring to it in a field, or using a marker such as `PhantomData`
  = help: if you intended `V` to be a const parameter, use `const V: /* Type */` instead

error[E0308]: mismatched types
 --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:9:64
  |
9 | struct RobinHashTable<const MAX_LENGTH: usize, CellIdx = <Cond<{}, usize, u32> as Ret>::R> {}
  |                                                                ^^ expected `bool`, found `()`

error[E0392]: type parameter `CellIdx` is never used
 --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:9:48
  |
9 | struct RobinHashTable<const MAX_LENGTH: usize, CellIdx = <Cond<{}, usize, u32> as Ret>::R> {}
  |                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused type parameter
  |
  = help: consider removing `CellIdx`, referring to it in a field, or using a marker such as `PhantomData`
  = help: if you intended `CellIdx` to be a const parameter, use `const CellIdx: /* Type */` instead

error[E0747]: unresolved item provided when a constant was expected
  --> /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:55
   |
11 | impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<MAX_LENGTH, CellIdx> {}
   |                                                       ^^^^^^^^^^
   |
help: if this generic argument was intended as a const parameter, surround it with braces
   |
11 | impl<CellIdx> HashMapBase<CellIdx> for RobinHashTable<{ MAX_LENGTH }, CellIdx> {}
   |                                                       +            +

thread 'rustc' panicked at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/compiler/rustc_type_ir/src/binder.rs:721:9:
type parameter `CellIdx/#1` (CellIdx/#1/1) out of range when instantiating, args=[{const error}]
stack backtrace:
   0:     0x7a5d7b004f15 - std::backtrace_rs::backtrace::libunwind::trace::hc269bfc84eb36e15
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x7a5d7b004f15 - std::backtrace_rs::backtrace::trace_unsynchronized::hece6c4d7a612f15c
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7a5d7b004f15 - std::sys_common::backtrace::_print_fmt::h930816c48dbbaf0d
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7a5d7b004f15 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h97d89f938a66f30a
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7a5d7b055c5b - core::fmt::rt::Argument::fmt::h24d0a17c8139d598
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/core/src/fmt/rt.rs:165:63
   5:     0x7a5d7b055c5b - core::fmt::write::ha35330775473ce1b
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/core/src/fmt/mod.rs:1168:21
   6:     0x7a5d7aff9bef - std::io::Write::write_fmt::h43aadac447ba03dc
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/io/mod.rs:1835:15
   7:     0x7a5d7b004cee - std::sys_common::backtrace::_print::h26d59bbced8ffda1
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7a5d7b004cee - std::sys_common::backtrace::print::ha970e07731260ee4
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7a5d7b007729 - std::panicking::default_hook::{{closure}}::hf9289ff1d818f2e0
  10:     0x7a5d7b0074ca - std::panicking::default_hook::h63336b0533014868
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/panicking.rs:298:9
  11:     0x7a5d777d7890 - std[6fb11aa7feb46831]::panicking::update_hook::<alloc[34e4e5571b6f83d9]::boxed::Box<rustc_driver_impl[ffae40d8b8d5c74b]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7a5d7b007e5b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hf78a7244bd2d88ce
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/alloc/src/boxed.rs:2077:9
  13:     0x7a5d7b007e5b - std::panicking::rust_panic_with_hook::h0b57c3ef0581f5fb
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/panicking.rs:799:13
  14:     0x7a5d7b007bd4 - std::panicking::begin_panic_handler::{{closure}}::h3bf6c54ce49c26c2
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/panicking.rs:664:13
  15:     0x7a5d7b0053d9 - std::sys_common::backtrace::__rust_end_short_backtrace::h7ebf041d380b46ed
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7a5d7b007907 - rust_begin_unwind
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/panicking.rs:652:5
  17:     0x7a5d7b0521f3 - core::panicking::panic_fmt::hea580bf65fedee8d
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/core/src/panicking.rs:72:14
  18:     0x7a5d778da789 - <rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::type_param_out_of_range
  19:     0x7a5d792ee2ea - <rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::fold_ty
  20:     0x7a5d792ed0a6 - <&rustc_middle[d7453cc9d163243f]::ty::list::RawList<(), rustc_middle[d7453cc9d163243f]::ty::generic_args::GenericArg> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFoldable<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::try_fold_with::<rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>
  21:     0x7a5d79e249ae - <rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::fold_const.warm
  22:     0x7a5d792ee267 - <rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::fold_ty
  23:     0x7a5d792ed015 - <&rustc_middle[d7453cc9d163243f]::ty::list::RawList<(), rustc_middle[d7453cc9d163243f]::ty::generic_args::GenericArg> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFoldable<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::try_fold_with::<rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>
  24:     0x7a5d792ed6ac - <rustc_type_ir[f61c5ba52dab4f78]::binder::ArgFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt> as rustc_type_ir[f61c5ba52dab4f78]::fold::TypeFolder<rustc_middle[d7453cc9d163243f]::ty::context::TyCtxt>>::fold_ty
  25:     0x7a5d78f0c939 - <<dyn rustc_hir_analysis[1c7651ca8b7a2f4f]::hir_ty_lowering::HirTyLowerer>::lower_generic_args_of_path::{closure#0}::GenericArgsCtxt as rustc_hir_analysis[1c7651ca8b7a2f4f]::hir_ty_lowering::GenericArgsLowerer>::inferred_kind
  26:     0x7a5d767cdd2a - <dyn rustc_hir_analysis[1c7651ca8b7a2f4f]::hir_ty_lowering::HirTyLowerer>::lower_path
  27:     0x7a5d79199197 - <dyn rustc_hir_analysis[1c7651ca8b7a2f4f]::hir_ty_lowering::HirTyLowerer>::lower_ty_common::{closure#0}
  28:     0x7a5d7674409b - rustc_hir_analysis[1c7651ca8b7a2f4f]::collect::type_of::type_of
  29:     0x7a5d78dd0c2a - rustc_query_impl[1410ec32161e1f70]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1410ec32161e1f70]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 8usize]>>
  30:     0x7a5d78dcf81b - rustc_query_system[71bc59e02034b9b1]::query::plumbing::try_execute_query::<rustc_query_impl[1410ec32161e1f70]::DynamicConfig<rustc_query_system[71bc59e02034b9b1]::query::caches::DefIdCache<rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[1410ec32161e1f70]::plumbing::QueryCtxt, false>
  31:     0x7a5d78dcf3bb - rustc_query_impl[1410ec32161e1f70]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  32:     0x7a5d78f9efcf - <rustc_hir_analysis[1c7651ca8b7a2f4f]::collect::CollectItemTypesVisitor as rustc_hir[b11a8aea6cdb8d1a]::intravisit::Visitor>::visit_item
  33:     0x7a5d7675f6c0 - rustc_hir_analysis[1c7651ca8b7a2f4f]::check::wfcheck::check_well_formed
  34:     0x7a5d791c52a9 - rustc_query_impl[1410ec32161e1f70]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1410ec32161e1f70]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>
  35:     0x7a5d791c5526 - rustc_query_system[71bc59e02034b9b1]::query::plumbing::try_execute_query::<rustc_query_impl[1410ec32161e1f70]::DynamicConfig<rustc_query_system[71bc59e02034b9b1]::query::caches::VecCache<rustc_hir[b11a8aea6cdb8d1a]::hir_id::OwnerId, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[1410ec32161e1f70]::plumbing::QueryCtxt, false>
  36:     0x7a5d791c5286 - rustc_query_impl[1410ec32161e1f70]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  37:     0x7a5d791c6009 - rustc_hir_analysis[1c7651ca8b7a2f4f]::check::wfcheck::check_mod_type_wf
  38:     0x7a5d791c5e4f - rustc_query_impl[1410ec32161e1f70]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1410ec32161e1f70]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>
  39:     0x7a5d7972c1fa - rustc_query_system[71bc59e02034b9b1]::query::plumbing::try_execute_query::<rustc_query_impl[1410ec32161e1f70]::DynamicConfig<rustc_query_system[71bc59e02034b9b1]::query::caches::DefaultCache<rustc_span[3fc851bceb4adf61]::def_id::LocalModDefId, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[1410ec32161e1f70]::plumbing::QueryCtxt, false>
  40:     0x7a5d7972bfb5 - rustc_query_impl[1410ec32161e1f70]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  41:     0x7a5d78ff37ea - rustc_hir_analysis[1c7651ca8b7a2f4f]::check_crate
  42:     0x7a5d791ba8be - rustc_interface[f4a2ea540be086e6]::passes::analysis
  43:     0x7a5d791ba41b - rustc_query_impl[1410ec32161e1f70]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[1410ec32161e1f70]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>
  44:     0x7a5d799cdda5 - rustc_query_system[71bc59e02034b9b1]::query::plumbing::try_execute_query::<rustc_query_impl[1410ec32161e1f70]::DynamicConfig<rustc_query_system[71bc59e02034b9b1]::query::caches::SingleCache<rustc_middle[d7453cc9d163243f]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[1410ec32161e1f70]::plumbing::QueryCtxt, false>
  45:     0x7a5d799cdb0f - rustc_query_impl[1410ec32161e1f70]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  46:     0x7a5d7984f692 - rustc_interface[f4a2ea540be086e6]::interface::run_compiler::<core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>, rustc_driver_impl[ffae40d8b8d5c74b]::run_compiler::{closure#0}>::{closure#1}
  47:     0x7a5d79804f67 - std[6fb11aa7feb46831]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[f4a2ea540be086e6]::util::run_in_thread_with_globals<rustc_interface[f4a2ea540be086e6]::util::run_in_thread_pool_with_globals<rustc_interface[f4a2ea540be086e6]::interface::run_compiler<core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>, rustc_driver_impl[ffae40d8b8d5c74b]::run_compiler::{closure#0}>::{closure#1}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>::{closure#0}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>
  48:     0x7a5d79804d2a - <<std[6fb11aa7feb46831]::thread::Builder>::spawn_unchecked_<rustc_interface[f4a2ea540be086e6]::util::run_in_thread_with_globals<rustc_interface[f4a2ea540be086e6]::util::run_in_thread_pool_with_globals<rustc_interface[f4a2ea540be086e6]::interface::run_compiler<core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>, rustc_driver_impl[ffae40d8b8d5c74b]::run_compiler::{closure#0}>::{closure#1}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>::{closure#0}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b05d301dbc549eb0]::result::Result<(), rustc_span[3fc851bceb4adf61]::ErrorGuaranteed>>::{closure#2} as core[b05d301dbc549eb0]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  49:     0x7a5d7b011e4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he97bec9b57692eb6
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/alloc/src/boxed.rs:2063:9
  50:     0x7a5d7b011e4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5ef09d5fe1e7a265
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/alloc/src/boxed.rs:2063:9
  51:     0x7a5d7b011e4b - std::sys::pal::unix::thread::Thread::new::thread_start::h71e84f01f2e92ad3
                               at /rustc/13423befc40fffe23ccc6dd06868142cff9428fe/library/std/src/sys/pal/unix/thread.rs:108:17
  52:     0x7a5d744a6ded - <unknown>
  53:     0x7a5d7452a0dc - <unknown>
  54:                0x0 - <unknown>

error: 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: please make sure that you have updated to the latest nightly

note: rustc 1.81.0-nightly (13423befc 2024-06-09) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [type_of] computing type of `<impl at /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:1: 11:75>`
#1 [check_well_formed] checking that `<impl at /tmp/icemaker_global_tempdir.7MOg4WzJ7ybU/rustc_testrunner_tmpdir_reporting.HyzgwWnQ2tfu/mvce.rs:11:1: 11:75>` is well-formed
end of query stack
error: aborting due to 7 previous errors; 1 warning emitted

Some errors have detailed explanations: E0308, E0392, E0405, E0412, E0601, E0747.
For more information about an error, try `rustc --explain E0308`.

@rustbot label +F-generic_const_exprs
@matthiaskrgr matthiaskrgr added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. labels Jun 9, 2024
@rustbot rustbot added needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. F-generic_const_exprs `#![feature(generic_const_exprs)]` labels Jun 9, 2024
@matthiaskrgr matthiaskrgr removed the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Jun 9, 2024
@matthiaskrgr matthiaskrgr reopened this Jun 9, 2024
@theemathas
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Minimized:

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

struct Cond<const B: bool>;

struct Thing<T = Cond<0>>(T);

impl Thing {}
Compiler output 
   Compiling playground v0.0.1 (/playground)
error[E0308]: mismatched types
 --> src/lib.rs:6:23
  |
6 | struct Thing<T = Cond<0>>(T);
  |                       ^ expected `bool`, found integer

thread 'rustc' panicked at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/compiler/rustc_type_ir/src/binder.rs:721:9:
type parameter `T/#0` (T/#0/0) out of range when instantiating, args=[]
stack backtrace:
   0:     0x7fafbbd3ff15 - std::backtrace_rs::backtrace::libunwind::trace::hfca91910e8bd6208
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x7fafbbd3ff15 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a4f6fc8cd78f634
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fafbbd3ff15 - std::sys_common::backtrace::_print_fmt::h5d0b0e53bade0c48
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7fafbbd3ff15 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h19ae2d3e45efa1aa
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fafbbd90c5b - core::fmt::rt::Argument::fmt::h56833048848af921
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/core/src/fmt/rt.rs:165:63
   5:     0x7fafbbd90c5b - core::fmt::write::h73ea2fd46689cbd2
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/core/src/fmt/mod.rs:1168:21
   6:     0x7fafbbd34bef - std::io::Write::write_fmt::h57421db57be4d88a
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/io/mod.rs:1835:15
   7:     0x7fafbbd3fcee - std::sys_common::backtrace::_print::h49b789ad9bc424ff
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7fafbbd3fcee - std::sys_common::backtrace::print::h30b346ab119f042f
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7fafbbd42729 - std::panicking::default_hook::{{closure}}::hac3e4c7a36a1e544
  10:     0x7fafbbd424ca - std::panicking::default_hook::h36c5bd5715913de7
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/panicking.rs:298:9
  11:     0x7fafbef8d100 - std[a54bcd08e7411830]::panicking::update_hook::<alloc[bc734d13426437c7]::boxed::Box<rustc_driver_impl[814eaf686e5216f9]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7fafbbd42e5b - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb1741174b795cf35
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/alloc/src/boxed.rs:2077:9
  13:     0x7fafbbd42e5b - std::panicking::rust_panic_with_hook::hf07571b7e9d43806
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/panicking.rs:799:13
  14:     0x7fafbbd42bd4 - std::panicking::begin_panic_handler::{{closure}}::hdc742db4bd338eb8
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/panicking.rs:664:13
  15:     0x7fafbbd403d9 - std::sys_common::backtrace::__rust_end_short_backtrace::h2d0cc130f1c87c64
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7fafbbd42907 - rust_begin_unwind
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/panicking.rs:652:5
  17:     0x7fafbbd8d1f3 - core::panicking::panic_fmt::hc9533aa472778eef
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/core/src/panicking.rs:72:14
  18:     0x7fafbf08fff9 - <rustc_type_ir[92f743e515eeefed]::binder::ArgFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>::type_param_out_of_range
  19:     0x7fafc0a73c6a - <rustc_type_ir[92f743e515eeefed]::binder::ArgFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt> as rustc_type_ir[92f743e515eeefed]::fold::TypeFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>::fold_ty
  20:     0x7fafc0a72995 - <&rustc_middle[b41b0863c4e23e8a]::ty::list::RawList<(), rustc_middle[b41b0863c4e23e8a]::ty::generic_args::GenericArg> as rustc_type_ir[92f743e515eeefed]::fold::TypeFoldable<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>::try_fold_with::<rustc_type_ir[92f743e515eeefed]::binder::ArgFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>
  21:     0x7fafc15d6f02 - <rustc_type_ir[92f743e515eeefed]::binder::ArgFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt> as rustc_type_ir[92f743e515eeefed]::fold::TypeFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>::fold_const.warm
  22:     0x7fafc0a7322f - <rustc_type_ir[92f743e515eeefed]::binder::ArgFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt> as rustc_type_ir[92f743e515eeefed]::fold::TypeFolder<rustc_middle[b41b0863c4e23e8a]::ty::context::TyCtxt>>::fold_ty
  23:     0x7fafc06acf79 - <<dyn rustc_hir_analysis[6b7f69c937aac3d5]::hir_ty_lowering::HirTyLowerer>::lower_generic_args_of_path::{closure#0}::GenericArgsCtxt as rustc_hir_analysis[6b7f69c937aac3d5]::hir_ty_lowering::GenericArgsLowerer>::inferred_kind
  24:     0x7fafbdfc2d2a - <dyn rustc_hir_analysis[6b7f69c937aac3d5]::hir_ty_lowering::HirTyLowerer>::lower_path
  25:     0x7fafc099de17 - <dyn rustc_hir_analysis[6b7f69c937aac3d5]::hir_ty_lowering::HirTyLowerer>::lower_ty_common::{closure#0}
  26:     0x7fafbddc165b - rustc_hir_analysis[6b7f69c937aac3d5]::collect::type_of::type_of
  27:     0x7fafc059c82a - rustc_query_impl[b746354c2bcfb267]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b746354c2bcfb267]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 8usize]>>
  28:     0x7fafc059b427 - rustc_query_system[6e6ff034b5afc6]::query::plumbing::try_execute_query::<rustc_query_impl[b746354c2bcfb267]::DynamicConfig<rustc_query_system[6e6ff034b5afc6]::query::caches::DefIdCache<rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[b746354c2bcfb267]::plumbing::QueryCtxt, false>
  29:     0x7fafc059afe7 - rustc_query_impl[b746354c2bcfb267]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  30:     0x7fafc073eb8f - <rustc_hir_analysis[6b7f69c937aac3d5]::collect::CollectItemTypesVisitor as rustc_hir[e257be9344e55af2]::intravisit::Visitor>::visit_item
  31:     0x7fafbdddccc0 - rustc_hir_analysis[6b7f69c937aac3d5]::check::wfcheck::check_well_formed
  32:     0x7fafc092c1e9 - rustc_query_impl[b746354c2bcfb267]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b746354c2bcfb267]::query_impl::check_well_formed::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>
  33:     0x7fafc092c466 - rustc_query_system[6e6ff034b5afc6]::query::plumbing::try_execute_query::<rustc_query_impl[b746354c2bcfb267]::DynamicConfig<rustc_query_system[6e6ff034b5afc6]::query::caches::VecCache<rustc_hir[e257be9344e55af2]::hir_id::OwnerId, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b746354c2bcfb267]::plumbing::QueryCtxt, false>
  34:     0x7fafc092c1c6 - rustc_query_impl[b746354c2bcfb267]::query_impl::check_well_formed::get_query_non_incr::__rust_end_short_backtrace
  35:     0x7fafc092cf37 - rustc_hir_analysis[6b7f69c937aac3d5]::check::wfcheck::check_mod_type_wf
  36:     0x7fafc092cd7b - rustc_query_impl[b746354c2bcfb267]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b746354c2bcfb267]::query_impl::check_mod_type_wf::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>
  37:     0x7fafc0edc6fa - rustc_query_system[6e6ff034b5afc6]::query::plumbing::try_execute_query::<rustc_query_impl[b746354c2bcfb267]::DynamicConfig<rustc_query_system[6e6ff034b5afc6]::query::caches::DefaultCache<rustc_span[8dc60f5d6165f5e6]::def_id::LocalModDefId, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b746354c2bcfb267]::plumbing::QueryCtxt, false>
  38:     0x7fafc0edc4b5 - rustc_query_impl[b746354c2bcfb267]::query_impl::check_mod_type_wf::get_query_non_incr::__rust_end_short_backtrace
  39:     0x7fafc07966ea - rustc_hir_analysis[6b7f69c937aac3d5]::check_crate
  40:     0x7fafc09217fe - rustc_interface[b431ae828ca0cbb1]::passes::analysis
  41:     0x7fafc092135b - rustc_query_impl[b746354c2bcfb267]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[b746354c2bcfb267]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>
  42:     0x7fafc11fad65 - rustc_query_system[6e6ff034b5afc6]::query::plumbing::try_execute_query::<rustc_query_impl[b746354c2bcfb267]::DynamicConfig<rustc_query_system[6e6ff034b5afc6]::query::caches::SingleCache<rustc_middle[b41b0863c4e23e8a]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[b746354c2bcfb267]::plumbing::QueryCtxt, false>
  43:     0x7fafc11faacf - rustc_query_impl[b746354c2bcfb267]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  44:     0x7fafc1007512 - rustc_interface[b431ae828ca0cbb1]::interface::run_compiler::<core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>, rustc_driver_impl[814eaf686e5216f9]::run_compiler::{closure#0}>::{closure#1}
  45:     0x7fafc0fcda67 - std[a54bcd08e7411830]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[b431ae828ca0cbb1]::util::run_in_thread_with_globals<rustc_interface[b431ae828ca0cbb1]::util::run_in_thread_pool_with_globals<rustc_interface[b431ae828ca0cbb1]::interface::run_compiler<core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>, rustc_driver_impl[814eaf686e5216f9]::run_compiler::{closure#0}>::{closure#1}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>::{closure#0}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>
  46:     0x7fafc0fcd82a - <<std[a54bcd08e7411830]::thread::Builder>::spawn_unchecked_<rustc_interface[b431ae828ca0cbb1]::util::run_in_thread_with_globals<rustc_interface[b431ae828ca0cbb1]::util::run_in_thread_pool_with_globals<rustc_interface[b431ae828ca0cbb1]::interface::run_compiler<core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>, rustc_driver_impl[814eaf686e5216f9]::run_compiler::{closure#0}>::{closure#1}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>::{closure#0}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[bdee16f735ec8991]::result::Result<(), rustc_span[8dc60f5d6165f5e6]::ErrorGuaranteed>>::{closure#2} as core[bdee16f735ec8991]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  47:     0x7fafbbd4ce4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c82973632029444
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/alloc/src/boxed.rs:2063:9
  48:     0x7fafbbd4ce4b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::he2c2231a15a5a037
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/alloc/src/boxed.rs:2063:9
  49:     0x7fafbbd4ce4b - std::sys::pal::unix::thread::Thread::new::thread_start::haa4b727517fcd5d2
                               at /rustc/f21554f7f0ff447b803961c51acafde04553c1ed/library/std/src/sys/pal/unix/thread.rs:108:17
  50:     0x7fafbbc5a609 - start_thread
  51:     0x7fafbbb7d353 - clone
  52:                0x0 - <unknown>

error: 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: please make sure that you have updated to the latest nightly

note: please attach the file at `/playground/rustc-ice-2024-06-09T15_00_43-78.txt` to your bug report

note: compiler flags: --crate-type lib -C embed-bitcode=no -C codegen-units=1 -C debuginfo=2

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

query stack during panic:
#0 [type_of] computing type of `<impl at src/lib.rs:8:1: 8:11>`
#1 [check_well_formed] checking that `<impl at src/lib.rs:8:1: 8:11>` is well-formed
end of query stack
For more information about this error, try `rustc --explain E0308`.
error: could not compile `playground` (lib) due to 1 previous error

@fmease fmease changed the title ICE: wfchk: type parameter .. out of range when instantiating, args=[{const error} ICE: wfchk: type parameter .. out of range when instantiating, args=[{const error}] Jun 9, 2024
@matthiaskrgr matthiaskrgr added the S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. label Jun 17, 2024
@GrigorenkoPV
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Minimized:

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

struct Cond<const B: bool>;

struct Thing<T = Cond<0>>(T);

impl Thing {}

Compiler output

This first regresses from correctly giving an error to ICEing in nightly-2021-09-01 (5d68044...29ef6cf)

error: internal compiler error: compiler/rustc_middle/src/ty/subst.rs:534:17: type parameter `T/#0` (T/0) out of range when substituting, substs=[]
 --> src/lib.rs:9:6
  |
9 | impl Thing {}
  |      ^^^^^

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/29ef6cf1637aa8317f8911f93f14e18d404c1b0e/compiler/rustc_errors/src/lib.rs:1093:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

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 1.56.0-nightly (29ef6cf16 2021-08-31) running on x86_64-unknown-linux-gnu

note: compiler flags: -C embed-bitcode=no -C debuginfo=2 -C incremental -C target-cpu=native -C link-arg=-fuse-ld=mold --crate-type lib

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

query stack during panic:
#0 [type_of] computing type of `<impl at src/lib.rs:9:1: 9:14>`
#1 [collect_mod_item_types] collecting item types in top-level module
end of query stack

@matthiaskrgr
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where's the const error though? 😅

@oli-obk oli-obk mentioned this issue Jan 8, 2025
Merged
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jan 8, 2025
@matthiaskrgr
Rollup merge of rust-lang#135195 - oli-obk:push-toyoyrupruko, r=lcnr
b4ea2b2 
Make `lit_to_mir_constant` and `lit_to_const` infallible

My motivation for this change is just that it's annoying to check everywhere, especially since all but one call site was just ICEing on errors anyway right there.

They can still fail, but now just return an error constant instead of having the caller handle the error.

fixes rust-lang#114317
fixes rust-lang#126182
@bors bors closed this as completed in 8ff355a Jan 9, 2025
rust-timer added a commit to rust-lang-ci/rust that referenced this issue Jan 9, 2025
@rust-timer
Unrolled build for rust-lang#135195
49017c7 
Rollup merge of rust-lang#135195 - oli-obk:push-toyoyrupruko, r=lcnr

Make `lit_to_mir_constant` and `lit_to_const` infallible

My motivation for this change is just that it's annoying to check everywhere, especially since all but one call site was just ICEing on errors anyway right there.

They can still fail, but now just return an error constant instead of having the caller handle the error.

fixes rust-lang#114317
fixes rust-lang#126182
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C-bug Category: This is a bug. F-generic_const_exprs `#![feature(generic_const_exprs)]` I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ S-bug-has-test Status: This bug is tracked inside the repo by a `known-bug` test. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Make lit_to_mir_constant and lit_to_const infallible oli-obk/rust
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@matthiaskrgr @theemathas @rustbot @GrigorenkoPV