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ICE due to bad sized to unsized pointer cast in const item #115998

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AidoP opened this issue Sep 20, 2023 · 5 comments · Fixed by #116056
Closed

ICE due to bad sized to unsized pointer cast in const item #115998

AidoP opened this issue Sep 20, 2023 · 5 comments · Fixed by #116056
Labels
C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@AidoP
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AidoP commented Sep 20, 2023

Code

pub struct Data([u8]);
const _: &'static Data = unsafe { &*(&[] as *const Data) };

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Meta

rustc --version --verbose:

rustc 1.72.1 (d5c2e9c34 2023-09-13)
binary: rustc
commit-hash: d5c2e9c342b358556da91d61ed4133f6f50fc0c3
commit-date: 2023-09-13
host: x86_64-unknown-linux-gnu
release: 1.72.1
LLVM version: 16.0.5

On playgrounds it seemed to affect release and debug for stable, nightly and beta.

Error output

error: internal compiler error: compiler/rustc_const_eval/src/interpret/place.rs:36:17: expected wide pointer extra data (e.g. slice length or trait object vtable)
Backtrace 

lorix ~ %RUST_BACKTRACE=full rustc --crate-type lib ice.rs                                                                                                                                              returned 101
error: internal compiler error: compiler/rustc_const_eval/src/interpret/place.rs:36:17: expected wide pointer extra data (e.g. slice length or trait object vtable)

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/compiler/rustc_errors/src/lib.rs:1651:9
stack backtrace:
   0:     0x7fba78362b51 - std::backtrace_rs::backtrace::libunwind::trace::h66dc1c6acf794faa
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7fba78362b51 - std::backtrace_rs::backtrace::trace_unsynchronized::ha80d20099a67f790
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fba78362b51 - std::sys_common::backtrace::_print_fmt::h7b959d43f35f16d4
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7fba78362b51 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdaa196410d9ee0b9
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7fba783c96ff - core::fmt::rt::Argument::fmt::h0ddfbbe8be3f80d0
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/core/src/fmt/rt.rs:138:9
   5:     0x7fba783c96ff - core::fmt::write::h66b3c629f3d623e4
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/core/src/fmt/mod.rs:1094:21
   6:     0x7fba78355497 - std::io::Write::write_fmt::hb6d80fba4115e0c2
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/io/mod.rs:1714:15
   7:     0x7fba78362965 - std::sys_common::backtrace::_print::h1a49cfb0cf3cce17
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7fba78362965 - std::sys_common::backtrace::print::hca95c2d0055e42a2
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7fba78365743 - std::panicking::default_hook::{{closure}}::hc03c01c56bca600c
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:269:22
  10:     0x7fba783654d4 - std::panicking::default_hook::hb2cb5315b6634f1c
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:288:9
  11:     0x7fba7b66b60b - rustc_driver_impl[e91af841be79713a]::install_ice_hook::{closure#0}
  12:     0x7fba78365f6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb3a915ffd78277c6
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:2007:9
  13:     0x7fba78365f6e - std::panicking::rust_panic_with_hook::h75cd912a39a34e8a
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:709:13
  14:     0x7fba7bc22921 - std[74d10c9f32099e86]::panicking::begin_panic::<rustc_errors[db744a5925f28741]::ExplicitBug>::{closure#0}
  15:     0x7fba7bc214b6 - std[74d10c9f32099e86]::sys_common::backtrace::__rust_end_short_backtrace::<std[74d10c9f32099e86]::panicking::begin_panic<rustc_errors[db744a5925f28741]::ExplicitBug>::{closure#0}, !>
  16:     0x7fba7bbce646 - std[74d10c9f32099e86]::panicking::begin_panic::<rustc_errors[db744a5925f28741]::ExplicitBug>
  17:     0x7fba7bb896d4 - <rustc_errors[db744a5925f28741]::HandlerInner>::bug::<alloc[1f40c6002c873f6d]::string::String>
  18:     0x7fba7bb89556 - <rustc_errors[db744a5925f28741]::Handler>::bug::<alloc[1f40c6002c873f6d]::string::String>
  19:     0x7fba7bb636cc - rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt::<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}
  20:     0x7fba7bb5efba - rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_opt::<rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7fba7bb5ef8a - rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_context_opt::<rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_opt<rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7fba79da9efd - rustc_middle[fbd75b4db2cdb7e6]::util::bug::bug_fmt
  23:     0x7fba79ad4ab6 - <rustc_const_eval[88869f152bb01255]::interpret::eval_context::InterpCx<rustc_const_eval[88869f152bb01255]::const_eval::machine::CompileTimeInterpreter>>::size_and_align_of
  24:     0x7fba79ad480b - <rustc_const_eval[88869f152bb01255]::interpret::eval_context::InterpCx<rustc_const_eval[88869f152bb01255]::const_eval::machine::CompileTimeInterpreter>>::size_and_align_of
  25:     0x7fba79a6fe05 - <rustc_const_eval[88869f152bb01255]::interpret::eval_context::InterpCx<rustc_const_eval[88869f152bb01255]::const_eval::machine::CompileTimeInterpreter>>::statement
  26:     0x7fba79a6a59a - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_allocation_raw_provider
  27:     0x7fba796cc0c7 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 16usize]>>
  28:     0x7fba7a289f2c - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  29:     0x7fba7a289bed - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  30:     0x7fba7aa9ceb6 - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_const_value_raw_provider
  31:     0x7fba79689c87 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>
  32:     0x7fba7a2b1bdb - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  33:     0x7fba7a2b17cd - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  34:     0x7fba7aa9c614 - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_const_value_raw_provider
  35:     0x7fba79689c87 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>
  36:     0x7fba7a2b1bdb - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  37:     0x7fba7a2b17cd - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  38:     0x7fba7973f46c - <rustc_middle[fbd75b4db2cdb7e6]::query::plumbing::TyCtxtEnsure>::const_eval_poly
  39:     0x7fba7973a4f3 - <rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass as rustc_lint[8d94bab7becf7711]::passes::LateLintPass>::check_item
  40:     0x7fba79736a21 - rustc_hir[7b007da93fd56bed]::intravisit::walk_mod::<rustc_lint[8d94bab7becf7711]::late::LateContextAndPass<rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass>>
  41:     0x7fba79736336 - rustc_lint[8d94bab7becf7711]::late::late_lint_mod::<rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass>
  42:     0x7fba797360ec - rustc_lint[8d94bab7becf7711]::lint_mod
  43:     0x7fba7a2b356c - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 0usize]>>
  44:     0x7fba7a2b354e - <rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::dynamic_query::{closure#2} as core[63ccc595abf60ca6]::ops::function::FnOnce<(rustc_middle[fbd75b4db2cdb7e6]::ty::context::TyCtxt, rustc_span[ca0c6fb73220b455]::def_id::LocalDefId)>>::call_once
  45:     0x7fba79d71cff - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::VecCache<rustc_span[ca0c6fb73220b455]::def_id::LocalDefId, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  46:     0x7fba7afe1754 - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::get_query_non_incr::__rust_end_short_backtrace
  47:     0x7fba7aa2af17 - rustc_data_structures[bf281432ed14a641]::sync::par_for_each_in::<&[rustc_hir[7b007da93fd56bed]::hir_id::OwnerId], <rustc_middle[fbd75b4db2cdb7e6]::hir::map::Map>::par_for_each_module<rustc_lint[8d94bab7becf7711]::late::check_crate<rustc_lint[8d94bab7becf7711]::BuiltinCombinedLateLintPass, rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#1}::{closure#0}::{closure#0}>::{closure#0}>
  48:     0x7fba7aa2ac65 - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_lint[8d94bab7becf7711]::late::check_crate<rustc_lint[8d94bab7becf7711]::BuiltinCombinedLateLintPass, rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#1}::{closure#0}>
  49:     0x7fba7aa2a89e - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}>
  50:     0x7fba7aa2a3bf - <core[63ccc595abf60ca6]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}> as core[63ccc595abf60ca6]::ops::function::FnOnce<()>>::call_once
  51:     0x7fba7aa29db0 - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}>
  52:     0x7fba7aa28887 - rustc_interface[9522ab489a5f66e6]::passes::analysis
  53:     0x7fba7aa8f3ea - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 1usize]>>
  54:     0x7fba7aa8f3d9 - <rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::dynamic_query::{closure#2} as core[63ccc595abf60ca6]::ops::function::FnOnce<(rustc_middle[fbd75b4db2cdb7e6]::ty::context::TyCtxt, ())>>::call_once
  55:     0x7fba7acae458 - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::SingleCache<rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  56:     0x7fba7acae229 - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  57:     0x7fba7ab238e2 - <rustc_interface[9522ab489a5f66e6]::queries::QueryResult<&rustc_middle[fbd75b4db2cdb7e6]::ty::context::GlobalCtxt>>::enter::<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}::{closure#2}::{closure#4}>
  58:     0x7fba7ab22587 - <rustc_interface[9522ab489a5f66e6]::interface::Compiler>::enter::<rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}::{closure#2}, core[63ccc595abf60ca6]::result::Result<core[63ccc595abf60ca6]::option::Option<rustc_interface[9522ab489a5f66e6]::queries::Linker>, rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  59:     0x7fba7ab1f7b5 - rustc_span[ca0c6fb73220b455]::set_source_map::<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  60:     0x7fba7ab1f226 - <scoped_tls[35a2f59988e0a19c]::ScopedKey<rustc_span[ca0c6fb73220b455]::SessionGlobals>>::set::<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  61:     0x7fba7ab1e7ec - std[74d10c9f32099e86]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[9522ab489a5f66e6]::util::run_in_thread_pool_with_globals<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  62:     0x7fba7aea53b5 - <<std[74d10c9f32099e86]::thread::Builder>::spawn_unchecked_<rustc_interface[9522ab489a5f66e6]::util::run_in_thread_pool_with_globals<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#1} as core[63ccc595abf60ca6]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  63:     0x7fba78370425 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hde6e666388faa495
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:1993:9
  64:     0x7fba78370425 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9b6389e489a4842f
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:1993:9
  65:     0x7fba78370425 - std::sys::unix::thread::Thread::new::thread_start::hcab660740b858b1f
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys/unix/thread.rs:108:17
  66:     0x7fba7808c9eb - <unknown>
  67:     0x7fba78110dfc - <unknown>
  68:                0x0 - <unknown>

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 1.72.1 (d5c2e9c34 2023-09-13) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib

query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `_`
#1 [eval_to_const_value_raw] simplifying constant for the type system `_`
#2 [eval_to_const_value_raw] simplifying constant for the type system `_`
#3 [lint_mod] linting top-level module
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error

@AidoP AidoP 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 Sep 20, 2023
@rustbot rustbot added the needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. label Sep 20, 2023
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AidoP commented Sep 20, 2023

Looks like it also happens without the re-borrow, but with a different error.

pub struct Data([u8]);
const _: *const Data = &[] as *const Data;
Backtrace 

error: internal compiler error: compiler/rustc_const_eval/src/interpret/place.rs:551:56: write_immediate_to_mplace: invalid Scalar layout: TyAndLayout {
                                    ty: *const Data,
                                    layout: Layout {
                                        size: Size(16 bytes),
                                        align: AbiAndPrefAlign {
                                            abi: Align(8 bytes),
                                            pref: Align(8 bytes),
                                        },
                                        abi: ScalarPair(
                                            Initialized {
                                                value: Pointer(
                                                    AddressSpace(
                                                        0,
                                                    ),
                                                ),
                                                valid_range: 0..=18446744073709551615,
                                            },
                                            Initialized {
                                                value: Int(
                                                    I64,
                                                    false,
                                                ),
                                                valid_range: 0..=18446744073709551615,
                                            },
                                        ),
                                        fields: Arbitrary {
                                            offsets: [
                                                Size(0 bytes),
                                                Size(8 bytes),
                                            ],
                                            memory_index: [
                                                0,
                                                1,
                                            ],
                                        },
                                        largest_niche: None,
                                        variants: Single {
                                            index: 0,
                                        },
                                    },
                                }
 --> ice.rs:2:1
  |
2 | const _: *const Data = &[] as *const Data;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/compiler/rustc_errors/src/lib.rs:995:33
stack backtrace:
   0:     0x7f316bb62b51 - std::backtrace_rs::backtrace::libunwind::trace::h66dc1c6acf794faa
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f316bb62b51 - std::backtrace_rs::backtrace::trace_unsynchronized::ha80d20099a67f790
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f316bb62b51 - std::sys_common::backtrace::_print_fmt::h7b959d43f35f16d4
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f316bb62b51 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hdaa196410d9ee0b9
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f316bbc96ff - core::fmt::rt::Argument::fmt::h0ddfbbe8be3f80d0
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/core/src/fmt/rt.rs:138:9
   5:     0x7f316bbc96ff - core::fmt::write::h66b3c629f3d623e4
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/core/src/fmt/mod.rs:1094:21
   6:     0x7f316bb55497 - std::io::Write::write_fmt::hb6d80fba4115e0c2
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/io/mod.rs:1714:15
   7:     0x7f316bb62965 - std::sys_common::backtrace::_print::h1a49cfb0cf3cce17
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f316bb62965 - std::sys_common::backtrace::print::hca95c2d0055e42a2
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f316bb65743 - std::panicking::default_hook::{{closure}}::hc03c01c56bca600c
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:269:22
  10:     0x7f316bb654d4 - std::panicking::default_hook::hb2cb5315b6634f1c
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:288:9
  11:     0x7f316ee6b60b - rustc_driver_impl[e91af841be79713a]::install_ice_hook::{closure#0}
  12:     0x7f316bb65f6e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb3a915ffd78277c6
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:2007:9
  13:     0x7f316bb65f6e - std::panicking::rust_panic_with_hook::h75cd912a39a34e8a
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/panicking.rs:709:13
  14:     0x7f316edef371 - std[74d10c9f32099e86]::panicking::begin_panic::<rustc_errors[db744a5925f28741]::ExplicitBug>::{closure#0}
  15:     0x7f316edecff6 - std[74d10c9f32099e86]::sys_common::backtrace::__rust_end_short_backtrace::<std[74d10c9f32099e86]::panicking::begin_panic<rustc_errors[db744a5925f28741]::ExplicitBug>::{closure#0}, !>
  16:     0x7f316ee250a6 - std[74d10c9f32099e86]::panicking::begin_panic::<rustc_errors[db744a5925f28741]::ExplicitBug>
  17:     0x7f316ee2371e - <rustc_errors[db744a5925f28741]::HandlerInner>::span_bug::<rustc_span[ca0c6fb73220b455]::span_encoding::Span, alloc[1f40c6002c873f6d]::string::String>
  18:     0x7f316ee235ad - <rustc_errors[db744a5925f28741]::Handler>::span_bug::<rustc_span[ca0c6fb73220b455]::span_encoding::Span, alloc[1f40c6002c873f6d]::string::String>
  19:     0x7f316edef4dd - rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt::<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}
  20:     0x7f316edef50a - rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_opt::<rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7f316eded74a - rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_context_opt::<rustc_middle[fbd75b4db2cdb7e6]::ty::context::tls::with_opt<rustc_middle[fbd75b4db2cdb7e6]::util::bug::opt_span_bug_fmt<rustc_span[ca0c6fb73220b455]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7f316d2da154 - rustc_middle[fbd75b4db2cdb7e6]::util::bug::span_bug_fmt::<rustc_span[ca0c6fb73220b455]::span_encoding::Span>
  23:     0x7f316d304c81 - <rustc_const_eval[88869f152bb01255]::interpret::eval_context::InterpCx<rustc_const_eval[88869f152bb01255]::const_eval::machine::CompileTimeInterpreter>>::terminator
  24:     0x7f316d26a60e - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_allocation_raw_provider
  25:     0x7f316cecc0c7 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_allocation_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 16usize]>>
  26:     0x7f316da89f2c - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  27:     0x7f316da89bed - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_allocation_raw::get_query_non_incr::__rust_end_short_backtrace
  28:     0x7f316e29ceb6 - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_const_value_raw_provider
  29:     0x7f316ce89c87 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>
  30:     0x7f316dab1bdb - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  31:     0x7f316dab17cd - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  32:     0x7f316e29c614 - rustc_const_eval[88869f152bb01255]::const_eval::eval_queries::eval_to_const_value_raw_provider
  33:     0x7f316ce89c87 - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>
  34:     0x7f316dab1bdb - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::DefaultCache<rustc_middle[fbd75b4db2cdb7e6]::ty::ParamEnvAnd<rustc_middle[fbd75b4db2cdb7e6]::mir::interpret::GlobalId>, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 32usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  35:     0x7f316dab17cd - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::eval_to_const_value_raw::get_query_non_incr::__rust_end_short_backtrace
  36:     0x7f316cf3f46c - <rustc_middle[fbd75b4db2cdb7e6]::query::plumbing::TyCtxtEnsure>::const_eval_poly
  37:     0x7f316cf3a4f3 - <rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass as rustc_lint[8d94bab7becf7711]::passes::LateLintPass>::check_item
  38:     0x7f316cf36a21 - rustc_hir[7b007da93fd56bed]::intravisit::walk_mod::<rustc_lint[8d94bab7becf7711]::late::LateContextAndPass<rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass>>
  39:     0x7f316cf36336 - rustc_lint[8d94bab7becf7711]::late::late_lint_mod::<rustc_lint[8d94bab7becf7711]::BuiltinCombinedModuleLateLintPass>
  40:     0x7f316cf360ec - rustc_lint[8d94bab7becf7711]::lint_mod
  41:     0x7f316dab356c - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 0usize]>>
  42:     0x7f316dab354e - <rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::dynamic_query::{closure#2} as core[63ccc595abf60ca6]::ops::function::FnOnce<(rustc_middle[fbd75b4db2cdb7e6]::ty::context::TyCtxt, rustc_span[ca0c6fb73220b455]::def_id::LocalDefId)>>::call_once
  43:     0x7f316d571cff - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::VecCache<rustc_span[ca0c6fb73220b455]::def_id::LocalDefId, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 0usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  44:     0x7f316e7e1754 - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::lint_mod::get_query_non_incr::__rust_end_short_backtrace
  45:     0x7f316e22af17 - rustc_data_structures[bf281432ed14a641]::sync::par_for_each_in::<&[rustc_hir[7b007da93fd56bed]::hir_id::OwnerId], <rustc_middle[fbd75b4db2cdb7e6]::hir::map::Map>::par_for_each_module<rustc_lint[8d94bab7becf7711]::late::check_crate<rustc_lint[8d94bab7becf7711]::BuiltinCombinedLateLintPass, rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#1}::{closure#0}::{closure#0}>::{closure#0}>
  46:     0x7f316e22ac65 - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_lint[8d94bab7becf7711]::late::check_crate<rustc_lint[8d94bab7becf7711]::BuiltinCombinedLateLintPass, rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}::{closure#0}>::{closure#1}::{closure#0}>
  47:     0x7f316e22a89e - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}::{closure#2}::{closure#0}>
  48:     0x7f316e22a3bf - <core[63ccc595abf60ca6]::panic::unwind_safe::AssertUnwindSafe<rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}::{closure#1}> as core[63ccc595abf60ca6]::ops::function::FnOnce<()>>::call_once
  49:     0x7f316e229db0 - <rustc_session[7bc6f0e7ff11a78e]::session::Session>::time::<(), rustc_interface[9522ab489a5f66e6]::passes::analysis::{closure#5}>
  50:     0x7f316e228887 - rustc_interface[9522ab489a5f66e6]::passes::analysis
  51:     0x7f316e28f3ea - rustc_query_impl[e7af9ba2ee20c49a]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 1usize]>>
  52:     0x7f316e28f3d9 - <rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::dynamic_query::{closure#2} as core[63ccc595abf60ca6]::ops::function::FnOnce<(rustc_middle[fbd75b4db2cdb7e6]::ty::context::TyCtxt, ())>>::call_once
  53:     0x7f316e4ae458 - rustc_query_system[8b63fd0ca5778b73]::query::plumbing::try_execute_query::<rustc_query_impl[e7af9ba2ee20c49a]::DynamicConfig<rustc_query_system[8b63fd0ca5778b73]::query::caches::SingleCache<rustc_middle[fbd75b4db2cdb7e6]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e7af9ba2ee20c49a]::plumbing::QueryCtxt, false>
  54:     0x7f316e4ae229 - rustc_query_impl[e7af9ba2ee20c49a]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  55:     0x7f316e3238e2 - <rustc_interface[9522ab489a5f66e6]::queries::QueryResult<&rustc_middle[fbd75b4db2cdb7e6]::ty::context::GlobalCtxt>>::enter::<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}::{closure#2}::{closure#4}>
  56:     0x7f316e322587 - <rustc_interface[9522ab489a5f66e6]::interface::Compiler>::enter::<rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}::{closure#2}, core[63ccc595abf60ca6]::result::Result<core[63ccc595abf60ca6]::option::Option<rustc_interface[9522ab489a5f66e6]::queries::Linker>, rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  57:     0x7f316e31f7b5 - rustc_span[ca0c6fb73220b455]::set_source_map::<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  58:     0x7f316e31f226 - <scoped_tls[35a2f59988e0a19c]::ScopedKey<rustc_span[ca0c6fb73220b455]::SessionGlobals>>::set::<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  59:     0x7f316e31e7ec - std[74d10c9f32099e86]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[9522ab489a5f66e6]::util::run_in_thread_pool_with_globals<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>
  60:     0x7f316e6a53b5 - <<std[74d10c9f32099e86]::thread::Builder>::spawn_unchecked_<rustc_interface[9522ab489a5f66e6]::util::run_in_thread_pool_with_globals<rustc_interface[9522ab489a5f66e6]::interface::run_compiler<core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>, rustc_driver_impl[e91af841be79713a]::run_compiler::{closure#1}>::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[63ccc595abf60ca6]::result::Result<(), rustc_span[ca0c6fb73220b455]::ErrorGuaranteed>>::{closure#1} as core[63ccc595abf60ca6]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  61:     0x7f316bb70425 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hde6e666388faa495
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:1993:9
  62:     0x7f316bb70425 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9b6389e489a4842f
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/alloc/src/boxed.rs:1993:9
  63:     0x7f316bb70425 - std::sys::unix::thread::Thread::new::thread_start::hcab660740b858b1f
                               at /rustc/d5c2e9c342b358556da91d61ed4133f6f50fc0c3/library/std/src/sys/unix/thread.rs:108:17
  64:     0x7f316b88c9eb - <unknown>
  65:     0x7f316b910dfc - <unknown>
  66:                0x0 - <unknown>

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 1.72.1 (d5c2e9c34 2023-09-13) running on x86_64-unknown-linux-gnu

note: compiler flags: --crate-type lib

query stack during panic:
#0 [eval_to_allocation_raw] const-evaluating + checking `_`
#1 [eval_to_const_value_raw] simplifying constant for the type system `_`
#2 [eval_to_const_value_raw] simplifying constant for the type system `_`
#3 [lint_mod] linting top-level module
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to previous error

@saethlin saethlin added E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc and removed needs-triage This issue may need triage. Remove it if it has been sufficiently triaged. labels Sep 20, 2023
@matthiaskrgr
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#115998 (comment)
Regression in nightly-2021-11-14

found 7 bors merge commits in the specified range
commit[0] 2021-11-12: Auto merge of #90836 - matthiaskrgr:rollup-ou6yrlw, r=matthiaskrgr
commit[1] 2021-11-13: Auto merge of #89167 - workingjubilee:use-simd, r=MarkSimulacrum
commit[2] 2021-11-13: Auto merge of #90041 - jfrimmel:rt_copy_checks, r=Mark-Simulacrum
commit[3] 2021-11-13: Auto merge of #87264 - mystor:expand_literal, r=petrochenkov
commit[4] 2021-11-13: Auto merge of #90542 - the8472:privatize-the-means-of-rawvec-production, r=joshtriplett
commit[5] 2021-11-13: Auto merge of #89551 - jhpratt:stabilize-const_raw_ptr_deref, r=oli-obk
commit[6] 2021-11-13: Auto merge of #90385 - mfrw:mfrw/librustdoc, r=GuillaumeGomez
ERROR: no CI builds available between e90c5fb and b416e38 within last 167 days

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#115998 (comment)
Regression in nightly-2019-06-17
found 7 bors merge commits in the specified range
commit[0] 2019-06-15: Auto merge of #61828 - RalfJung:cfg-if, r=alexcrichton
commit[1] 2019-06-16: Auto merge of #61886 - Centril:rollup-3p3m2fu, r=Centril
commit[2] 2019-06-16: Auto merge of #60730 - matthewjasper:optimize-false-edges, r=pnkfelix
commit[3] 2019-06-16: Auto merge of #61739 - chansuke:separate-unit-tests, r=petrochenkov
commit[4] 2019-06-16: Auto merge of #61754 - nikomatsakis:trait-caching-perf-3, r=pnkfelix
commit[5] 2019-06-16: Auto merge of #61881 - glaubitz:sparc64-ffi-abi, r=petrochenkov
commit[6] 2019-06-16: Auto merge of #61347 - Centril:stabilize-underscore_const_names, r=petrochenkov
ERROR: no CI builds available between 0dc9e9c and 4edff84 within last 167 days

@matthiaskrgr matthiaskrgr added regression-from-stable-to-stable Performance or correctness regression from one stable version to another. and removed E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc labels Sep 20, 2023
@rustbot rustbot added the I-prioritize Issue: Indicates that prioritization has been requested for this issue. label Sep 20, 2023
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WG-prioritization assigning priority (Zulip discussion).

@rustbot label -I-prioritize +P-medium

@rustbot rustbot added P-medium Medium priority and removed I-prioritize Issue: Indicates that prioritization has been requested for this issue. labels Sep 21, 2023
@ouz-a
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ouz-a commented Sep 22, 2023 •
edited
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This also returns ICE, but ICE message varies between rustc version.

pub struct Data([u8]);

fn main(){
    let _f  = &[] as *const Data;
}

@ouz-a ouz-a mentioned this issue Sep 22, 2023
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@bors bors closed this as completed in a38f230 Sep 22, 2023
rust-timer added a commit to rust-lang-ci/rust that referenced this issue Sep 22, 2023
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Unrolled build for rust-lang#116056
ee04311 
Rollup merge of rust-lang#116056 - ouz-a:wide_ice, r=compiler-errors

Make unsized casts illegal

Weirdly enough this rust-lang#115998 issue seems to exist since Rust 1.0 (couldn't check before that) but it's only recently been noticed. This change makes those casts illegal.

Fixes rust-lang#115998
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C-bug Category: This is a bug. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ P-medium Medium priority regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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Make unsized casts illegal ouz-a/rust
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@matthiaskrgr @AidoP @apiraino @saethlin @rustbot @ouz-a