ICE: mgca: Val(ZeroSized ..) has parameters, but no args were provided in instantiate #147415
Description
seems to bisect to #140553
snippet:
#![feature(min_generic_const_args)]
fn foo<T>() {
[0; size_of::<*mut T>()]
}Version information
rustc 1.92.0-nightly (8111a2d6d 2025-10-06)
binary: rustc
commit-hash: 8111a2d6da405e9684a8a83c2c9d69036bf23f12
commit-date: 2025-10-06
host: x86_64-unknown-linux-gnu
release: 1.92.0-nightly
LLVM version: 21.1.2
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
warning: the feature `min_generic_const_args` is incomplete and may not be safe to use and/or cause compiler crashes
--> /tmp/icemaker_global_tempdir.m19l8SA8m9s8/rustc_testrunner_tmpdir_reporting.WMiy594FXSbC/mvce.rs:1:12
|
1 | #![feature(min_generic_const_args)]
| ^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #132980 <https://github.com/rust-lang/rust/issues/132980> for more information
= note: `#[warn(incomplete_features)]` on by default
error[E0601]: `main` function not found in crate `mvce`
--> /tmp/icemaker_global_tempdir.m19l8SA8m9s8/rustc_testrunner_tmpdir_reporting.WMiy594FXSbC/mvce.rs:5:2
|
5 | }
| ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.m19l8SA8m9s8/rustc_testrunner_tmpdir_reporting.WMiy594FXSbC/mvce.rs`
thread 'rustc' (2576543) panicked at /rustc-dev/8111a2d6da405e9684a8a83c2c9d69036bf23f12/compiler/rustc_type_ir/src/binder.rs:646:13:
Val(ZeroSized, FnDef(DefId(2:2304 ~ core[016b]::mem::size_of), [*mut T/#0])) has parameters, but no args were provided in instantiate
stack backtrace:
0: 0x7f48bf3c5933 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h9d493bf7fa709445
1: 0x7f48bfa01fbc - core::fmt::write::hc6c08c30b818d85a
2: 0x7f48bf37a333 - std::io::Write::write_fmt::h1a8070f00bb47620
3: 0x7f48bf38b8f2 - std::sys::backtrace::BacktraceLock::print::he5d95542d2b86573
4: 0x7f48bf391969 - std::panicking::default_hook::{{closure}}::hf509239352864b0b
5: 0x7f48bf391493 - std::panicking::default_hook::h41a205ba0e6bad2c
6: 0x7f48be3a6af7 - std[5bd9112d56c9e542]::panicking::update_hook::<alloc[8dd70e2de2dd10a]::boxed::Box<rustc_driver_impl[799d235ef8173497]::install_ice_hook::{closure#1}>>::{closure#0}
7: 0x7f48bf391d8f - std::panicking::panic_with_hook::h423ed9a60c1bb0bf
8: 0x7f48bf391b4a - std::panicking::panic_handler::{{closure}}::h380789c533e4be75
9: 0x7f48bf38ba39 - std::sys::backtrace::__rust_end_short_backtrace::h6043c6eeb7d07ee0
10: 0x7f48bf36c56d - __rustc[79156e1635b10208]::rust_begin_unwind
11: 0x7f48bc3b7230 - core::panicking::panic_fmt::h566dcbe782a35b3a
12: 0x7f48bfcab033 - <rustc_const_eval[47651ca69e396203]::interpret::eval_context::InterpCx<rustc_const_eval[47651ca69e396203]::const_eval::machine::CompileTimeMachine>>::eval_operand
13: 0x7f48c06bce12 - <rustc_const_eval[47651ca69e396203]::interpret::eval_context::InterpCx<rustc_const_eval[47651ca69e396203]::const_eval::machine::CompileTimeMachine>>::eval_callee_and_args
14: 0x7f48c06d8890 - rustc_const_eval[47651ca69e396203]::const_eval::eval_queries::eval_to_allocation_raw_provider
15: 0x7f48c06d5a90 - rustc_query_impl[836c1e68a123fbf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[836c1e68a123fbf6]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 24usize]>>
16: 0x7f48c06cb51b - rustc_query_system[686fc956cf50412b]::query::plumbing::try_execute_query::<rustc_query_impl[836c1e68a123fbf6]::DynamicConfig<rustc_query_system[686fc956cf50412b]::query::caches::DefaultCache<rustc_middle[244f91c2aa28f1b4]::ty::PseudoCanonicalInput<rustc_middle[244f91c2aa28f1b4]::mir::interpret::GlobalId>, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[836c1e68a123fbf6]::plumbing::QueryCtxt, false>
17: 0x7f48c06cb0b9 - rustc_query_impl[836c1e68a123fbf6]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
18: 0x7f48c06c9e84 - rustc_const_eval[47651ca69e396203]::const_eval::valtrees::eval_to_valtree
19: 0x7f48c06c9c25 - rustc_query_impl[836c1e68a123fbf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[836c1e68a123fbf6]::query_impl::eval_to_valtree::dynamic_query::{closure#2}::{closure#0}, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 16usize]>>
20: 0x7f48bfc5edb8 - rustc_query_system[686fc956cf50412b]::query::plumbing::try_execute_query::<rustc_query_impl[836c1e68a123fbf6]::DynamicConfig<rustc_query_system[686fc956cf50412b]::query::caches::DefaultCache<rustc_middle[244f91c2aa28f1b4]::ty::PseudoCanonicalInput<rustc_middle[244f91c2aa28f1b4]::mir::interpret::GlobalId>, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[836c1e68a123fbf6]::plumbing::QueryCtxt, false>
21: 0x7f48bfc5e970 - rustc_query_impl[836c1e68a123fbf6]::query_impl::eval_to_valtree::get_query_non_incr::__rust_end_short_backtrace
22: 0x7f48bfc5da8f - <rustc_middle[244f91c2aa28f1b4]::ty::context::TyCtxt>::const_eval_resolve_for_typeck
23: 0x7f48bfc5c734 - rustc_trait_selection[899f8063f9e18b59]::traits::try_evaluate_const
24: 0x7f48bf1df185 - rustc_trait_selection[899f8063f9e18b59]::traits::evaluate_const
25: 0x7f48c0e6698a - <rustc_trait_selection[899f8063f9e18b59]::traits::normalize::AssocTypeNormalizer>::normalize_free_alias::{closure#0}
26: 0x7f48bfc38ebf - <rustc_trait_selection[899f8063f9e18b59]::traits::normalize::AssocTypeNormalizer as rustc_type_ir[e6111309e8ec97af]::fold::TypeFolder<rustc_middle[244f91c2aa28f1b4]::ty::context::TyCtxt>>::fold_const
27: 0x7f48c0ab0433 - <rustc_hir_typeck[a357daf55cb619c8]::fn_ctxt::FnCtxt>::normalize::<rustc_middle[244f91c2aa28f1b4]::ty::consts::Const>
28: 0x7f48c092657d - <rustc_hir_typeck[a357daf55cb619c8]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
29: 0x7f48c0914422 - <rustc_hir_typeck[a357daf55cb619c8]::fn_ctxt::FnCtxt>::check_expr_block
30: 0x7f48c091c6ac - <rustc_hir_typeck[a357daf55cb619c8]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
31: 0x7f48bfc07b48 - rustc_hir_typeck[a357daf55cb619c8]::check::check_fn
32: 0x7f48c0ba221b - rustc_hir_typeck[a357daf55cb619c8]::typeck_with_inspect::{closure#0}
33: 0x7f48c0ba0bce - rustc_query_impl[836c1e68a123fbf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[836c1e68a123fbf6]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 8usize]>>
34: 0x7f48bfd1ba04 - rustc_query_system[686fc956cf50412b]::query::plumbing::try_execute_query::<rustc_query_impl[836c1e68a123fbf6]::DynamicConfig<rustc_data_structures[70eb418aee26b76d]::vec_cache::VecCache<rustc_span[6b3d398326812288]::def_id::LocalDefId, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 8usize]>, rustc_query_system[686fc956cf50412b]::dep_graph::graph::DepNodeIndex>, false, false, false>, rustc_query_impl[836c1e68a123fbf6]::plumbing::QueryCtxt, false>
35: 0x7f48bfd1b389 - rustc_query_impl[836c1e68a123fbf6]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
36: 0x7f48c04f5b79 - <rustc_middle[244f91c2aa28f1b4]::ty::context::TyCtxt>::par_hir_body_owners::<rustc_hir_analysis[6c2a83d55c380820]::check_crate::{closure#2}>::{closure#0}
37: 0x7f48c04f4e18 - rustc_hir_analysis[6c2a83d55c380820]::check_crate
38: 0x7f48bfd11430 - rustc_interface[8b029a4f81d57bf6]::passes::analysis
39: 0x7f48bfd110f5 - rustc_query_impl[836c1e68a123fbf6]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[836c1e68a123fbf6]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 0usize]>>
40: 0x7f48c0964520 - rustc_query_system[686fc956cf50412b]::query::plumbing::try_execute_query::<rustc_query_impl[836c1e68a123fbf6]::DynamicConfig<rustc_query_system[686fc956cf50412b]::query::caches::SingleCache<rustc_middle[244f91c2aa28f1b4]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[836c1e68a123fbf6]::plumbing::QueryCtxt, false>
41: 0x7f48c0964308 - rustc_query_impl[836c1e68a123fbf6]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
42: 0x7f48c0c22000 - rustc_interface[8b029a4f81d57bf6]::passes::create_and_enter_global_ctxt::<core[16b3fef4fa94656]::option::Option<rustc_interface[8b029a4f81d57bf6]::queries::Linker>, rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}
43: 0x7f48c0c29b03 - <rustc_interface[8b029a4f81d57bf6]::passes::create_and_enter_global_ctxt<core[16b3fef4fa94656]::option::Option<rustc_interface[8b029a4f81d57bf6]::queries::Linker>, rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[16b3fef4fa94656]::ops::function::FnOnce<(&rustc_session[62811e3f1498e52e]::session::Session, rustc_middle[244f91c2aa28f1b4]::ty::context::CurrentGcx, alloc[8dd70e2de2dd10a]::sync::Arc<rustc_data_structures[70eb418aee26b76d]::jobserver::Proxy>, &std[5bd9112d56c9e542]::sync::once_lock::OnceLock<rustc_middle[244f91c2aa28f1b4]::ty::context::GlobalCtxt>, &rustc_data_structures[70eb418aee26b76d]::sync::worker_local::WorkerLocal<rustc_middle[244f91c2aa28f1b4]::arena::Arena>, &rustc_data_structures[70eb418aee26b76d]::sync::worker_local::WorkerLocal<rustc_hir[b3b90dd82afea593]::Arena>, rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
44: 0x7f48c0bf7d7e - rustc_interface[8b029a4f81d57bf6]::interface::run_compiler::<(), rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}>::{closure#1}
45: 0x7f48c0b096c7 - std[5bd9112d56c9e542]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[8b029a4f81d57bf6]::util::run_in_thread_with_globals<rustc_interface[8b029a4f81d57bf6]::util::run_in_thread_pool_with_globals<rustc_interface[8b029a4f81d57bf6]::interface::run_compiler<(), rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
46: 0x7f48c0b093a8 - <<std[5bd9112d56c9e542]::thread::Builder>::spawn_unchecked_<rustc_interface[8b029a4f81d57bf6]::util::run_in_thread_with_globals<rustc_interface[8b029a4f81d57bf6]::util::run_in_thread_pool_with_globals<rustc_interface[8b029a4f81d57bf6]::interface::run_compiler<(), rustc_driver_impl[799d235ef8173497]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[16b3fef4fa94656]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
47: 0x7f48c0b0facd - std::sys::thread::unix::Thread::new::thread_start::h41545b42ecfc43e3
48: 0x7f48ba4969cb - <unknown>
49: 0x7f48ba51aa0c - <unknown>
50: 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 1.92.0-nightly (8111a2d6d 2025-10-06) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `foo::{constant#0}`
#1 [eval_to_valtree] evaluating type-level constant
#2 [typeck] type-checking `foo`
#3 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 1 previous error; 1 warning emitted
For more information about this error, try `rustc --explain E0601`.
@rustbot label +F-min_generic_const_args