ICE: expected wide pointer extra data (e.g. slice length or trait object vtable) #127742
Description
Code
#[derive(Copy, Clone)] struct Wide<'a>(&'a Foo, &'static VTable); trait Cap<'a> {} struct VTable { bar: dyn Cap, } trait Bar { fn bar(&self) -> u32; } struct Foo { foo: u32, bar: bool, } impl Bar for Foo { fn bar(&self) -> u32 {} } #[repr(C)] union Transmute<T: Copy, U: Copy> { t: T, u: U, } const FOO: &dyn Bar = &Foo { foo: 128, bar: false, }; const G: Wide = Transmute { t: FOO }.u; fn main() {}Meta
rustc --version --verbose:
rustc 1.81.0-nightly (fcaa6fdfb 2024-07-13) binary: rustc commit-hash: fcaa6fdfbee1316184e7ad98c53241d52cd30a5f commit-date: 2024-07-13 host: x86_64-apple-darwin release: 1.81.0-nightly LLVM version: 18.1.7 Error output
error[E0106]: missing lifetime specifier --> ./A6D34.rs:7:14 | 7 | bar: dyn Cap, | ^^^ expected named lifetime parameter | = note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html help: consider making the bound lifetime-generic with a new `'a` lifetime | 7 | bar: dyn for<'a> Cap<'a>, | +++++++ ++++ help: consider introducing a named lifetime parameter | 6 ~ struct VTable<'a> { 7 ~ bar: dyn Cap<'a>, | Backtrace
error: internal compiler error: compiler/rustc_const_eval/src/interpret/place.rs:39:17: expected wide pointer extra data (e.g. slice length or trait object vtable) thread 'rustc' panicked at compiler/rustc_const_eval/src/interpret/place.rs:39:17: Box<dyn Any> stack backtrace: 0: 0x101ff6373 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h605d51fc858e32d3 1: 0x1020412fb - core::fmt::write::he70b1f5b242a09e4 2: 0x101fec0be - std::io::Write::write_fmt::hbfde528b9dfff91a 3: 0x101ff8c1a - std::panicking::default_hook::{{closure}}::hfdc91bfcaaf40c09 4: 0x101ff88ca - std::panicking::default_hook::h8673ceadddb8316e 5: 0x10b37d8dc - std[8bfe66706d3bd117]::panicking::update_hook::<alloc[ea04c33bd6f71985]::boxed::Box<rustc_driver_impl[d8a49a9463f03e6]::install_ice_hook::{closure#0}>>::{closure#0} 6: 0x101ff9a09 - std::panicking::rust_panic_with_hook::h206b639ed4704bb1 7: 0x10b3f0bb7 - std[8bfe66706d3bd117]::panicking::begin_panic::<rustc_errors[7f155011d809a3bf]::ExplicitBug>::{closure#0} 8: 0x10b3dc9f9 - std[8bfe66706d3bd117]::sys::backtrace::__rust_end_short_backtrace::<std[8bfe66706d3bd117]::panicking::begin_panic<rustc_errors[7f155011d809a3bf]::ExplicitBug>::{closure#0}, !> 9: 0x10fe57469 - std[8bfe66706d3bd117]::panicking::begin_panic::<rustc_errors[7f155011d809a3bf]::ExplicitBug> 10: 0x10b402c06 - <rustc_errors[7f155011d809a3bf]::diagnostic::BugAbort as rustc_errors[7f155011d809a3bf]::diagnostic::EmissionGuarantee>::emit_producing_guarantee 11: 0x10c0c8b45 - rustc_middle[66eaac359ba8a608]::util::bug::opt_span_bug_fmt::<rustc_span[9df13b32b3ae4eb2]::span_encoding::Span>::{closure#0} 12: 0x10c07f0b7 - rustc_middle[66eaac359ba8a608]::ty::context::tls::with_opt::<rustc_middle[66eaac359ba8a608]::util::bug::opt_span_bug_fmt<rustc_span[9df13b32b3ae4eb2]::span_encoding::Span>::{closure#0}, !>::{closure#0} 13: 0x10c07ebf5 - rustc_middle[66eaac359ba8a608]::ty::context::tls::with_context_opt::<rustc_middle[66eaac359ba8a608]::ty::context::tls::with_opt<rustc_middle[66eaac359ba8a608]::util::bug::opt_span_bug_fmt<rustc_span[9df13b32b3ae4eb2]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !> 14: 0x10ff1ff9b - rustc_middle[66eaac359ba8a608]::util::bug::bug_fmt 15: 0x10b2f2c32 - <rustc_const_eval[b2dc86267216f489]::interpret::validity::ValidityVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine>>::check_wide_ptr_meta 16: 0x10b2f3141 - <rustc_const_eval[b2dc86267216f489]::interpret::validity::ValidityVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine>>::check_safe_pointer 17: 0x10b2f57d3 - <rustc_const_eval[b2dc86267216f489]::interpret::validity::ValidityVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine> as rustc_const_eval[b2dc86267216f489]::interpret::visitor::ValueVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine>>::visit_value 18: 0x10b2f629e - <rustc_const_eval[b2dc86267216f489]::interpret::validity::ValidityVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine> as rustc_const_eval[b2dc86267216f489]::interpret::visitor::ValueVisitor<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine>>::visit_value 19: 0x10b2f7e85 - <rustc_const_eval[b2dc86267216f489]::interpret::eval_context::InterpCx<rustc_const_eval[b2dc86267216f489]::const_eval::machine::CompileTimeMachine>>::validate_operand_internal 20: 0x10b303b5b - rustc_const_eval[b2dc86267216f489]::const_eval::eval_queries::eval_to_allocation_raw_provider 21: 0x10ca63d1c - rustc_query_impl[ab99e8e391ad42b2]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 24usize]>> 22: 0x10ca173de - <rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2} as core[84f3396b7379d157]::ops::function::FnOnce<(rustc_middle[66eaac359ba8a608]::ty::context::TyCtxt, rustc_middle[66eaac359ba8a608]::ty::ParamEnvAnd<rustc_middle[66eaac359ba8a608]::mir::interpret::GlobalId>)>>::call_once 23: 0x10c84e42d - rustc_query_system[55587a8be6cb95b6]::query::plumbing::try_execute_query::<rustc_query_impl[ab99e8e391ad42b2]::DynamicConfig<rustc_query_system[55587a8be6cb95b6]::query::caches::DefaultCache<rustc_middle[66eaac359ba8a608]::ty::ParamEnvAnd<rustc_middle[66eaac359ba8a608]::mir::interpret::GlobalId>, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[ab99e8e391ad42b2]::plumbing::QueryCtxt, false> 24: 0x10ca8ed1c - rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace 25: 0x10b22d5a2 - rustc_middle[66eaac359ba8a608]::query::plumbing::query_get_at::<rustc_query_system[55587a8be6cb95b6]::query::caches::DefaultCache<rustc_middle[66eaac359ba8a608]::ty::ParamEnvAnd<rustc_middle[66eaac359ba8a608]::mir::interpret::GlobalId>, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 24usize]>>> 26: 0x10b2ffe40 - rustc_const_eval[b2dc86267216f489]::const_eval::eval_queries::eval_to_const_value_raw_provider 27: 0x10ca646bc - rustc_query_impl[ab99e8e391ad42b2]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 24usize]>> 28: 0x10ca1cbae - <rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2} as core[84f3396b7379d157]::ops::function::FnOnce<(rustc_middle[66eaac359ba8a608]::ty::context::TyCtxt, rustc_middle[66eaac359ba8a608]::ty::ParamEnvAnd<rustc_middle[66eaac359ba8a608]::mir::interpret::GlobalId>)>>::call_once 29: 0x10c84e42d - rustc_query_system[55587a8be6cb95b6]::query::plumbing::try_execute_query::<rustc_query_impl[ab99e8e391ad42b2]::DynamicConfig<rustc_query_system[55587a8be6cb95b6]::query::caches::DefaultCache<rustc_middle[66eaac359ba8a608]::ty::ParamEnvAnd<rustc_middle[66eaac359ba8a608]::mir::interpret::GlobalId>, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 24usize]>>, false, false, false>, rustc_query_impl[ab99e8e391ad42b2]::plumbing::QueryCtxt, false> 30: 0x10ca8f5cc - rustc_query_impl[ab99e8e391ad42b2]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace 31: 0x10b600c61 - <rustc_middle[66eaac359ba8a608]::hir::map::Map>::par_body_owners::<rustc_hir_analysis[c06ca58d4f3a4935]::check_crate::{closure#3}>::{closure#0} 32: 0x10b74f4dc - rustc_hir_analysis[c06ca58d4f3a4935]::check_crate 33: 0x10bd0ce37 - rustc_interface[f3798eed8f7e14ff]::passes::run_required_analyses 34: 0x10bd0f2d3 - rustc_interface[f3798eed8f7e14ff]::passes::analysis 35: 0x10ca6671c - rustc_query_impl[ab99e8e391ad42b2]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[ab99e8e391ad42b2]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 1usize]>> 36: 0x10c83ebfe - rustc_query_system[55587a8be6cb95b6]::query::plumbing::try_execute_query::<rustc_query_impl[ab99e8e391ad42b2]::DynamicConfig<rustc_query_system[55587a8be6cb95b6]::query::caches::SingleCache<rustc_middle[66eaac359ba8a608]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[ab99e8e391ad42b2]::plumbing::QueryCtxt, false> 37: 0x10ca70c77 - rustc_query_impl[ab99e8e391ad42b2]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace 38: 0x10b323537 - <rustc_interface[f3798eed8f7e14ff]::queries::QueryResult<&rustc_middle[66eaac359ba8a608]::ty::context::GlobalCtxt>>::enter::<core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>, rustc_driver_impl[d8a49a9463f03e6]::run_compiler::{closure#0}::{closure#1}::{closure#5}> 39: 0x10b384c1b - rustc_interface[f3798eed8f7e14ff]::interface::run_compiler::<core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>, rustc_driver_impl[d8a49a9463f03e6]::run_compiler::{closure#0}>::{closure#1} 40: 0x10b36ffc1 - std[8bfe66706d3bd117]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[f3798eed8f7e14ff]::util::run_in_thread_with_globals<rustc_interface[f3798eed8f7e14ff]::util::run_in_thread_pool_with_globals<rustc_interface[f3798eed8f7e14ff]::interface::run_compiler<core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>, rustc_driver_impl[d8a49a9463f03e6]::run_compiler::{closure#0}>::{closure#1}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>>::{closure#0}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>> 41: 0x10b38b5e6 - <<std[8bfe66706d3bd117]::thread::Builder>::spawn_unchecked_<rustc_interface[f3798eed8f7e14ff]::util::run_in_thread_with_globals<rustc_interface[f3798eed8f7e14ff]::util::run_in_thread_pool_with_globals<rustc_interface[f3798eed8f7e14ff]::interface::run_compiler<core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>, rustc_driver_impl[d8a49a9463f03e6]::run_compiler::{closure#0}>::{closure#1}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>>::{closure#0}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[84f3396b7379d157]::result::Result<(), rustc_span[9df13b32b3ae4eb2]::ErrorGuaranteed>>::{closure#2} as core[84f3396b7379d157]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} 42: 0x1020029bb - std::sys::pal::unix::thread::Thread::new::thread_start::hff8a09cc296b9c2d 43: 0x7ff801f5318b - __pthread_start 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 `/Users/sal/Documents/240714(240712-nightly)/rustc-ice-2024-07-15T00_43_16-58375.txt` to your bug report query stack during panic: #0 [eval_to_allocation_raw] const-evaluating + checking `G` #1 [eval_to_const_value_raw] simplifying constant for the type system `G` end of query stack error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0106`. Note
ICE location
rust/compiler/rustc_const_eval/src/interpret/place.rs
Lines 33 to 42 in fcaa6fd