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matthiaskrgr opened this issue Jun 17, 2023 · 1 comment · Fixed by #112810
Closed

ICE failed to normalize #112736

matthiaskrgr opened this issue Jun 17, 2023 · 1 comment · Fixed by #112810
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@compiler-errors
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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.

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@matthiaskrgr
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Code

trait Structure<E>: Sized {
    type RefTarget: ?Sized;
    type FfiPtr;
    unsafe fn borrow_from_ffi_ptr<'a>(ptr: Self::FfiPtr) -> Option<&'a Self::RefTarget>;
}

enum Slice {}

impl<E> Structure<E> for Slice
where
    S: Structure<E>,
    E: Encoding,
{
    type RefTarget = [E::Unit];
    type FfiPtr = (*const E::FfiUnit, usize);
}

trait Encoding {
    type Unit: Unit;
    type FfiUnit;
}

trait Unit {}

enum Utf16 {}

impl Encoding for Utf16 {
    type Unit = Utf16Unit;
    type FfiUnit = u16;
}

struct Utf16Unit(pub u16);

struct SUtf16Str {
    _data: <Slice as Structure<Utf16>>::RefTarget,
}

impl SUtf16Str {
    pub unsafe fn from_ptr<'a>(ptr: <Slice as Structure<Utf16>>::FfiPtr) -> Option<&'a Self> {
        std::mem::transmute::<Option<&[<Utf16 as Encoding>::Unit]>, _>(<Slice as Structure<
            Utf16,
        >>::borrow_from_ffi_ptr(
            ptr
        ))
    }
}

Meta

rustc --version --verbose:

rustc 1.72.0-nightly (1d7d82472 2023-06-17)
binary: rustc
commit-hash: 1d7d82472617a4a0fea59c7e239c8a48c8ac5c34
commit-date: 2023-06-17
host: x86_64-unknown-linux-gnu
release: 1.72.0-nightly
LLVM version: 16.0.5

Error output

error[E0412]: cannot find type `S` in this scope
  --> treereduce.out:11:5
   |
9  | impl<E> Structure<E> for Slice
   |      - similarly named type parameter `E` defined here
10 | where
11 |     S: Structure<E>,
   |     ^ help: a type parameter with a similar name exists: `E`

error[E0601]: `main` function not found in crate `treereduce`
  --> treereduce.out:46:2
   |
46 | }
   |  ^ consider adding a `main` function to `treereduce.out`

error[E0046]: not all trait items implemented, missing: `borrow_from_ffi_ptr`
 --> treereduce.out:9:1
  |
4 |     unsafe fn borrow_from_ffi_ptr<'a>(ptr: Self::FfiPtr) -> Option<&'a Self::RefTarget>;
  |     ------------------------------------------------------------------------------------ `borrow_from_ffi_ptr` from trait
...
9 | impl<E> Structure<E> for Slice
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ missing `borrow_from_ffi_ptr` in implementation

error[E0277]: the trait bound `Utf16Unit: Unit` is not satisfied
  --> treereduce.out:28:17
   |
28 |     type Unit = Utf16Unit;
   |                 ^^^^^^^^^ the trait `Unit` is not implemented for `Utf16Unit`
   |
note: required by a bound in `Encoding::Unit`
  --> treereduce.out:19:16
   |
19 |     type Unit: Unit;
   |                ^^^^ required by this bound in `Encoding::Unit`
Backtrace 

error: internal compiler error: compiler/rustc_middle/src/ty/normalize_erasing_regions.rs:195:90: Failed to normalize <Slice as Structure<Utf16>>::RefTarget, maybe try to call `try_normalize_erasing_regions` instead

thread 'rustc' panicked at 'Box<dyn Any>', /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/compiler/rustc_errors/src/lib.rs:1650:9
stack backtrace:
   0:     0x7faab1f60821 - std::backtrace_rs::backtrace::libunwind::trace::h6e3584f9aa263648
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7faab1f60821 - std::backtrace_rs::backtrace::trace_unsynchronized::h7cba45a2d56b3723
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7faab1f60821 - std::sys_common::backtrace::_print_fmt::hb3e5f2b800058c47
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7faab1f60821 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc6fcd56f05592786
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7faab1fc1b2f - core::fmt::rt::Argument::fmt::hb8b6762d96a2930c
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/core/src/fmt/rt.rs:138:9
   5:     0x7faab1fc1b2f - core::fmt::write::ha824b1be2c398991
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/core/src/fmt/mod.rs:1094:21
   6:     0x7faab1f53a31 - std::io::Write::write_fmt::h4bbc557c498e18be
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/io/mod.rs:1713:15
   7:     0x7faab1f60635 - std::sys_common::backtrace::_print::hb6a2afc924d1ac9a
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7faab1f60635 - std::sys_common::backtrace::print::h39a60e9b1dd2b988
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7faab1f63317 - std::panicking::default_hook::{{closure}}::hf1636ea70b88baf6
  10:     0x7faab1f63104 - std::panicking::default_hook::h25db0e741a15cb6c
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/panicking.rs:288:9
  11:     0x7faab0dc105b - <rustc_driver_impl[9fb98086b5dc1b8]::install_ice_hook::{closure#0} as core[5a025f5ac19a3684]::ops::function::FnOnce<(&core[5a025f5ac19a3684]::panic::panic_info::PanicInfo,)>>::call_once::{shim:vtable#0}
  12:     0x7faab1f63a5d - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb67fc0de76dc4685
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/alloc/src/boxed.rs:1999:9
  13:     0x7faab1f63a5d - std::panicking::rust_panic_with_hook::h6c10fd1f40066f99
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/panicking.rs:709:13
  14:     0x7faab12c21b1 - std[5e6a7ab4ec51e2fa]::panicking::begin_panic::<rustc_errors[db6e693a4d78f721]::ExplicitBug>::{closure#0}
  15:     0x7faab12c0e06 - std[5e6a7ab4ec51e2fa]::sys_common::backtrace::__rust_end_short_backtrace::<std[5e6a7ab4ec51e2fa]::panicking::begin_panic<rustc_errors[db6e693a4d78f721]::ExplicitBug>::{closure#0}, !>
  16:     0x7faab13572a6 - std[5e6a7ab4ec51e2fa]::panicking::begin_panic::<rustc_errors[db6e693a4d78f721]::ExplicitBug>
  17:     0x7faab12bdbd4 - <rustc_errors[db6e693a4d78f721]::HandlerInner>::bug::<alloc[31842ca5441cdb56]::string::String>
  18:     0x7faab12bda56 - <rustc_errors[db6e693a4d78f721]::Handler>::bug::<alloc[31842ca5441cdb56]::string::String>
  19:     0x7faab131142c - rustc_middle[c2d4873b804b2cf0]::util::bug::opt_span_bug_fmt::<rustc_span[7bbc48c8a570ee79]::span_encoding::Span>::{closure#0}
  20:     0x7faab130e2ca - rustc_middle[c2d4873b804b2cf0]::ty::context::tls::with_opt::<rustc_middle[c2d4873b804b2cf0]::util::bug::opt_span_bug_fmt<rustc_span[7bbc48c8a570ee79]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  21:     0x7faab130e29a - rustc_middle[c2d4873b804b2cf0]::ty::context::tls::with_context_opt::<rustc_middle[c2d4873b804b2cf0]::ty::context::tls::with_opt<rustc_middle[c2d4873b804b2cf0]::util::bug::opt_span_bug_fmt<rustc_span[7bbc48c8a570ee79]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  22:     0x7faaaf04f89d - rustc_middle[c2d4873b804b2cf0]::util::bug::bug_fmt
  23:     0x7faab0287805 - <rustc_middle[c2d4873b804b2cf0]::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder>::normalize_generic_arg_after_erasing_regions
  24:     0x7faaaf337db3 - <rustc_middle[c2d4873b804b2cf0]::ty::Ty as rustc_type_ir[ec7fec18ba31fd26]::fold::TypeFoldable<rustc_middle[c2d4873b804b2cf0]::ty::context::TyCtxt>>::fold_with::<rustc_middle[c2d4873b804b2cf0]::ty::normalize_erasing_regions::NormalizeAfterErasingRegionsFolder>
  25:     0x7faaaf5b9a13 - <rustc_middle[c2d4873b804b2cf0]::ty::context::TyCtxt>::struct_tail_erasing_lifetimes
  26:     0x7faaafd6b4cc - rustc_ty_utils[f36d30a9cf7df766]::layout::layout_of
  27:     0x7faaaedd80e0 - rustc_query_impl[7260f550d3fae5ad]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7260f550d3fae5ad]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 24usize]>>
  28:     0x7faaaf677577 - rustc_query_system[fd595a8868fcd518]::query::plumbing::try_execute_query::<rustc_query_impl[7260f550d3fae5ad]::DynamicConfig<rustc_query_system[fd595a8868fcd518]::query::caches::DefaultCache<rustc_middle[c2d4873b804b2cf0]::ty::ParamEnvAnd<rustc_middle[c2d4873b804b2cf0]::ty::Ty>, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 24usize]>>, false, true, false>, rustc_query_impl[7260f550d3fae5ad]::plumbing::QueryCtxt, false>
  29:     0x7faaaf6771aa - rustc_query_impl[7260f550d3fae5ad]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
  30:     0x7faaaef350c4 - <core[5a025f5ac19a3684]::iter::adapters::GenericShunt<core[5a025f5ac19a3684]::iter::adapters::by_ref_sized::ByRefSized<core[5a025f5ac19a3684]::iter::adapters::map::Map<core[5a025f5ac19a3684]::slice::iter::Iter<rustc_middle[c2d4873b804b2cf0]::ty::FieldDef>, rustc_ty_utils[f36d30a9cf7df766]::layout::layout_of_uncached::{closure#5}::{closure#0}>>, core[5a025f5ac19a3684]::result::Result<core[5a025f5ac19a3684]::convert::Infallible, rustc_middle[c2d4873b804b2cf0]::ty::layout::LayoutError>> as core[5a025f5ac19a3684]::iter::traits::iterator::Iterator>::next
  31:     0x7faaafd7084b - core[5a025f5ac19a3684]::iter::adapters::try_process::<core[5a025f5ac19a3684]::iter::adapters::by_ref_sized::ByRefSized<core[5a025f5ac19a3684]::iter::adapters::map::Map<core[5a025f5ac19a3684]::slice::iter::Iter<rustc_middle[c2d4873b804b2cf0]::ty::VariantDef>, rustc_ty_utils[f36d30a9cf7df766]::layout::layout_of_uncached::{closure#5}>>, rustc_index[d5751782e61451cb]::vec::IndexVec<rustc_abi[3d47570f4488febf]::FieldIdx, rustc_abi[3d47570f4488febf]::Layout>, core[5a025f5ac19a3684]::result::Result<core[5a025f5ac19a3684]::convert::Infallible, rustc_middle[c2d4873b804b2cf0]::ty::layout::LayoutError>, <core[5a025f5ac19a3684]::iter::adapters::map::Map<core[5a025f5ac19a3684]::slice::iter::Iter<rustc_middle[c2d4873b804b2cf0]::ty::VariantDef>, rustc_ty_utils[f36d30a9cf7df766]::layout::layout_of_uncached::{closure#5}> as core[5a025f5ac19a3684]::iter::traits::iterator::Iterator>::try_collect<rustc_index[d5751782e61451cb]::vec::IndexVec<rustc_abi[3d47570f4488febf]::VariantIdx, rustc_index[d5751782e61451cb]::vec::IndexVec<rustc_abi[3d47570f4488febf]::FieldIdx, rustc_abi[3d47570f4488febf]::Layout>>>::{closure#0}, rustc_index[d5751782e61451cb]::vec::IndexVec<rustc_abi[3d47570f4488febf]::VariantIdx, rustc_index[d5751782e61451cb]::vec::IndexVec<rustc_abi[3d47570f4488febf]::FieldIdx, rustc_abi[3d47570f4488febf]::Layout>>>
  32:     0x7faaafd6aa71 - rustc_ty_utils[f36d30a9cf7df766]::layout::layout_of
  33:     0x7faaaedd80e0 - rustc_query_impl[7260f550d3fae5ad]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7260f550d3fae5ad]::query_impl::layout_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 24usize]>>
  34:     0x7faaaf677577 - rustc_query_system[fd595a8868fcd518]::query::plumbing::try_execute_query::<rustc_query_impl[7260f550d3fae5ad]::DynamicConfig<rustc_query_system[fd595a8868fcd518]::query::caches::DefaultCache<rustc_middle[c2d4873b804b2cf0]::ty::ParamEnvAnd<rustc_middle[c2d4873b804b2cf0]::ty::Ty>, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 24usize]>>, false, true, false>, rustc_query_impl[7260f550d3fae5ad]::plumbing::QueryCtxt, false>
  35:     0x7faaaf6771aa - rustc_query_impl[7260f550d3fae5ad]::query_impl::layout_of::get_query_non_incr::__rust_end_short_backtrace
  36:     0x7faaaffcf0c9 - <rustc_middle[c2d4873b804b2cf0]::ty::layout::SizeSkeleton>::compute
  37:     0x7faab03973c8 - <rustc_hir_typeck[a6c8b38659ddb931]::fn_ctxt::FnCtxt>::check_transmute
  38:     0x7faaaf61909f - rustc_hir_typeck[a6c8b38659ddb931]::typeck
  39:     0x7faaaee09a8c - rustc_query_impl[7260f550d3fae5ad]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7260f550d3fae5ad]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 8usize]>>
  40:     0x7faaaee09a6e - <rustc_query_impl[7260f550d3fae5ad]::query_impl::typeck::dynamic_query::{closure#2} as core[5a025f5ac19a3684]::ops::function::FnOnce<(rustc_middle[c2d4873b804b2cf0]::ty::context::TyCtxt, rustc_span[7bbc48c8a570ee79]::def_id::LocalDefId)>>::call_once
  41:     0x7faaaeed2d4d - rustc_query_system[fd595a8868fcd518]::query::plumbing::try_execute_query::<rustc_query_impl[7260f550d3fae5ad]::DynamicConfig<rustc_query_system[fd595a8868fcd518]::query::caches::VecCache<rustc_span[7bbc48c8a570ee79]::def_id::LocalDefId, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[7260f550d3fae5ad]::plumbing::QueryCtxt, false>
  42:     0x7faab073115f - rustc_query_impl[7260f550d3fae5ad]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
  43:     0x7faaaef4f75d - rustc_query_impl[7260f550d3fae5ad]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7260f550d3fae5ad]::query_impl::used_trait_imports::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 8usize]>>
  44:     0x7faaaef4f6be - <rustc_query_impl[7260f550d3fae5ad]::query_impl::used_trait_imports::dynamic_query::{closure#2} as core[5a025f5ac19a3684]::ops::function::FnOnce<(rustc_middle[c2d4873b804b2cf0]::ty::context::TyCtxt, rustc_span[7bbc48c8a570ee79]::def_id::LocalDefId)>>::call_once
  45:     0x7faaaeed2d4d - rustc_query_system[fd595a8868fcd518]::query::plumbing::try_execute_query::<rustc_query_impl[7260f550d3fae5ad]::DynamicConfig<rustc_query_system[fd595a8868fcd518]::query::caches::VecCache<rustc_span[7bbc48c8a570ee79]::def_id::LocalDefId, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[7260f550d3fae5ad]::plumbing::QueryCtxt, false>
  46:     0x7faab073124f - rustc_query_impl[7260f550d3fae5ad]::query_impl::used_trait_imports::get_query_non_incr::__rust_end_short_backtrace
  47:     0x7faab01e27b6 - rustc_hir_analysis[e24c9918eefe89cd]::check_crate
  48:     0x7faab01d580a - rustc_interface[75da62af7afad68]::passes::analysis
  49:     0x7faab023d1aa - rustc_query_impl[7260f550d3fae5ad]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7260f550d3fae5ad]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 1usize]>>
  50:     0x7faab023d199 - <rustc_query_impl[7260f550d3fae5ad]::query_impl::analysis::dynamic_query::{closure#2} as core[5a025f5ac19a3684]::ops::function::FnOnce<(rustc_middle[c2d4873b804b2cf0]::ty::context::TyCtxt, ())>>::call_once
  51:     0x7faab0457ae8 - rustc_query_system[fd595a8868fcd518]::query::plumbing::try_execute_query::<rustc_query_impl[7260f550d3fae5ad]::DynamicConfig<rustc_query_system[fd595a8868fcd518]::query::caches::SingleCache<rustc_middle[c2d4873b804b2cf0]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[7260f550d3fae5ad]::plumbing::QueryCtxt, false>
  52:     0x7faab04578c7 - rustc_query_impl[7260f550d3fae5ad]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  53:     0x7faab02f4ca5 - <rustc_middle[c2d4873b804b2cf0]::ty::context::GlobalCtxt>::enter::<rustc_driver_impl[9fb98086b5dc1b8]::run_compiler::{closure#1}::{closure#2}::{closure#4}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>
  54:     0x7faab02f3c06 - rustc_span[7bbc48c8a570ee79]::set_source_map::<core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>, rustc_interface[75da62af7afad68]::interface::run_compiler<core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>, rustc_driver_impl[9fb98086b5dc1b8]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  55:     0x7faab02ec3f9 - <scoped_tls[5be461245172b0fd]::ScopedKey<rustc_span[7bbc48c8a570ee79]::SessionGlobals>>::set::<rustc_interface[75da62af7afad68]::interface::run_compiler<core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>, rustc_driver_impl[9fb98086b5dc1b8]::run_compiler::{closure#1}>::{closure#0}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>
  56:     0x7faab02eb9f6 - std[5e6a7ab4ec51e2fa]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[75da62af7afad68]::util::run_in_thread_pool_with_globals<rustc_interface[75da62af7afad68]::interface::run_compiler<core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>, rustc_driver_impl[9fb98086b5dc1b8]::run_compiler::{closure#1}>::{closure#0}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>
  57:     0x7faab02eb7a5 - <<std[5e6a7ab4ec51e2fa]::thread::Builder>::spawn_unchecked_<rustc_interface[75da62af7afad68]::util::run_in_thread_pool_with_globals<rustc_interface[75da62af7afad68]::interface::run_compiler<core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>, rustc_driver_impl[9fb98086b5dc1b8]::run_compiler::{closure#1}>::{closure#0}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5a025f5ac19a3684]::result::Result<(), rustc_span[7bbc48c8a570ee79]::ErrorGuaranteed>>::{closure#1} as core[5a025f5ac19a3684]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  58:     0x7faab1f6df55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3b57fe0fe8253eda
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/alloc/src/boxed.rs:1985:9
  59:     0x7faab1f6df55 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6eac2c7c988070fa
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/alloc/src/boxed.rs:1985:9
  60:     0x7faab1f6df55 - std::sys::unix::thread::Thread::new::thread_start::h8d73f1104f34aa7b
                               at /rustc/1d7d82472617a4a0fea59c7e239c8a48c8ac5c34/library/std/src/sys/unix/thread.rs:108:17
  61:     0x7faaada6444b - <unknown>
  62:     0x7faaadae7e40 - <unknown>
  63:                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 1.72.0-nightly (1d7d82472 2023-06-17) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [layout_of] computing layout of `&SUtf16Str`
#1 [layout_of] computing layout of `core::option::Option<&SUtf16Str>`
#2 [typeck] type-checking `<impl at treereduce.out:38:1: 38:15>::from_ptr`
#3 [used_trait_imports] finding used_trait_imports `<impl at treereduce.out:38:1: 38:15>::from_ptr`
#4 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 5 previous errors

Some errors have detailed explanations: E0046, E0277, E0412, E0601.
For more information about an error, try `rustc --explain E0046`.

@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 17, 2023
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matthiaskrgr commented Jun 17, 2023 •
edited by Noratrieb
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crashes since nightly-2023-01-13

Regression in 2b8590e

rust-lang-ci@07baff0 #106309

@compiler-errors compiler-errors self-assigned this Jun 17, 2023
@compiler-errors compiler-errors mentioned this issue Jun 19, 2023
Merged
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jun 23, 2023
@matthiaskrgr
Rollup merge of rust-lang#112810 - compiler-errors:dont-ice-on-bad-la…
d05c35a 
…yout, r=wesleywiser

Don't ICE on unnormalized struct tail in layout computation

1. We try to compute a `SizeSkeleton` even if a layout error occurs, but we really only need to do this if we get `LayoutError::Unknown`, since that means our type is too polymorphic to actually compute the full layout. If we have other errors, like `LayoutError::NormalizationError` or `LayoutError::Cycle`, then we can't really make any progress, since this represents an actual error.
2. Avoid using `normalize_erasing_regions` and `struct_tail_erasing_lifetimes` since those ICE on normalization errors, and since we may call `layout_of` in HIR typeck, we don't know for certain that we're on the happy path.

Fixes rust-lang#112736
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jun 23, 2023
@matthiaskrgr
Rollup merge of rust-lang#112810 - compiler-errors:dont-ice-on-bad-la…
c4b7a82 
…yout, r=wesleywiser

Don't ICE on unnormalized struct tail in layout computation

1. We try to compute a `SizeSkeleton` even if a layout error occurs, but we really only need to do this if we get `LayoutError::Unknown`, since that means our type is too polymorphic to actually compute the full layout. If we have other errors, like `LayoutError::NormalizationError` or `LayoutError::Cycle`, then we can't really make any progress, since this represents an actual error.
2. Avoid using `normalize_erasing_regions` and `struct_tail_erasing_lifetimes` since those ICE on normalization errors, and since we may call `layout_of` in HIR typeck, we don't know for certain that we're on the happy path.

Fixes rust-lang#112736
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this issue Jun 23, 2023
@matthiaskrgr
Rollup merge of rust-lang#112810 - compiler-errors:dont-ice-on-bad-la…
ed25a8f 
…yout, r=wesleywiser

Don't ICE on unnormalized struct tail in layout computation

1. We try to compute a `SizeSkeleton` even if a layout error occurs, but we really only need to do this if we get `LayoutError::Unknown`, since that means our type is too polymorphic to actually compute the full layout. If we have other errors, like `LayoutError::NormalizationError` or `LayoutError::Cycle`, then we can't really make any progress, since this represents an actual error.
2. Avoid using `normalize_erasing_regions` and `struct_tail_erasing_lifetimes` since those ICE on normalization errors, and since we may call `layout_of` in HIR typeck, we don't know for certain that we're on the happy path.

Fixes rust-lang#112736
@bors bors closed this as completed in cea5ae0 Jun 23, 2023
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Don't ICE on unnormalized struct tail in layout computation compiler-errors/rust
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