ICE `compiler/rustc_ast_lowering/src/expr.rs` None

[matthiaskrgr]

auto-reduced (treereduce-rust):

#![derive(Clone, Copy)]

use std::ptr::addr_of;

const UNINHABITED_VARIANT: () = unsafe {
    let v = *addr_of!(data).cast();
};

original:

#![feature(never_type)]
#![derive(Clone, Copy)]

use std::ptr::addr_of;

const UNINHABITED_VARIANT: () = unsafe {
    let v = *addr_of!(data).cast();
};

Version information

rustc 1.78.0-nightly (502ce8287 2024-02-14)
binary: rustc
commit-hash: 502ce8287bc3c86dca07acc38c5ff9431a6097be
commit-date: 2024-02-14
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 18.1.0

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

Program output

thread 'rustc' panicked at compiler/rustc_ast_lowering/src/expr.rs:326:77:
called `Option::unwrap()` on a `None` value
stack backtrace:
   0:     0x7f1058d8ce46 - std::backtrace_rs::backtrace::libunwind::trace::hef6ca8c9ff05aa0a
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7f1058d8ce46 - std::backtrace_rs::backtrace::trace_unsynchronized::hb30822e6b7919c47
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f1058d8ce46 - std::sys_common::backtrace::_print_fmt::h1f703c2afd9c4e56
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f1058d8ce46 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::ha2e21b66a3385ce5
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f1058ddd46c - core::fmt::rt::Argument::fmt::hcd1e8c7041e5ed14
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/core/src/fmt/rt.rs:142:9
   5:     0x7f1058ddd46c - core::fmt::write::h77a4d210f458f9fc
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/core/src/fmt/mod.rs:1120:17
   6:     0x7f1058d807ef - std::io::Write::write_fmt::h15bb809fa04e147c
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/io/mod.rs:1854:15
   7:     0x7f1058d8cbf4 - std::sys_common::backtrace::_print::h87585e724113690e
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f1058d8cbf4 - std::sys_common::backtrace::print::haf0d2d33f1864f49
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f1058d8f93b - std::panicking::default_hook::{{closure}}::h2b5712d85f6a0901
  10:     0x7f1058d8f689 - std::panicking::default_hook::h4ad63ec10ddd483d
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/panicking.rs:292:9
  11:     0x7f105bbf315c - std[7cf124c558fcb2bf]::panicking::update_hook::<alloc[ea5cddfe48f16fea]::boxed::Box<rustc_driver_impl[82aae3524ab0b7f8]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f1058d900a0 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hed07387d774f1dce
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/alloc/src/boxed.rs:2030:9
  13:     0x7f1058d900a0 - std::panicking::rust_panic_with_hook::hbd81dbb6d407ad32
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/panicking.rs:785:13
  14:     0x7f1058d8fda9 - std::panicking::begin_panic_handler::{{closure}}::h59cb51a91c6c9c7d
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/panicking.rs:651:13
  15:     0x7f1058d8d326 - std::sys_common::backtrace::__rust_end_short_backtrace::h08442929fe104458
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7f1058d8fb14 - rust_begin_unwind
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/panicking.rs:647:5
  17:     0x7f1058dd9975 - core::panicking::panic_fmt::h0107ebfcc222a38a
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/core/src/panicking.rs:72:14
  18:     0x7f1058dd9a33 - core::panicking::panic::h2128ec897528fc3c
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/core/src/panicking.rs:144:5
  19:     0x7f1058dd9706 - core::option::unwrap_failed::hd1de7e3a153d73ce
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/core/src/option.rs:1983:5
  20:     0x7f105d057f49 - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_expr_mut
  21:     0x7f105d052c94 - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_expr_mut
  22:     0x7f105d053e3f - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_expr_mut
  23:     0x7f105d8614f5 - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_block_noalloc
  24:     0x7f105d85cf9e - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_expr_mut::{closure#0}
  25:     0x7f105d85c35a - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_const_body
  26:     0x7f105daec196 - <rustc_ast_lowering[393f0e0731473f24]::LoweringContext>::lower_item_kind
  27:     0x7f105d061a64 - <rustc_ast_lowering[393f0e0731473f24]::item::ItemLowerer>::lower_node
  28:     0x7f105de39148 - rustc_ast_lowering[393f0e0731473f24]::lower_to_hir
  29:     0x7f105de388bc - rustc_query_impl[c1f81d4ed970b77f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[c1f81d4ed970b77f]::query_impl::hir_crate::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 8usize]>>
  30:     0x7f105dc1e58e - rustc_query_system[d1b725211d241e33]::query::plumbing::try_execute_query::<rustc_query_impl[c1f81d4ed970b77f]::DynamicConfig<rustc_query_system[d1b725211d241e33]::query::caches::SingleCache<rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[c1f81d4ed970b77f]::plumbing::QueryCtxt, false>
  31:     0x7f105dc1e0e0 - rustc_query_impl[c1f81d4ed970b77f]::query_impl::hir_crate::get_query_non_incr::__rust_end_short_backtrace
  32:     0x7f105d1c98c3 - rustc_query_impl[c1f81d4ed970b77f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[c1f81d4ed970b77f]::query_impl::hir_attrs::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 8usize]>>
  33:     0x7f105d1c8e23 - rustc_query_system[d1b725211d241e33]::query::plumbing::try_execute_query::<rustc_query_impl[c1f81d4ed970b77f]::DynamicConfig<rustc_query_system[d1b725211d241e33]::query::caches::VecCache<rustc_hir[6fa992176e24209c]::hir_id::OwnerId, rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[c1f81d4ed970b77f]::plumbing::QueryCtxt, false>
  34:     0x7f105d1c8b89 - rustc_query_impl[c1f81d4ed970b77f]::query_impl::hir_attrs::get_query_non_incr::__rust_end_short_backtrace
  35:     0x7f105ce1c6aa - <rustc_middle[f5b3ce8587b47ad6]::hir::map::Map>::attrs
  36:     0x7f105d81d382 - rustc_passes[9fd052a3157f7746]::entry::entry_fn
  37:     0x7f105d81d318 - rustc_query_impl[c1f81d4ed970b77f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[c1f81d4ed970b77f]::query_impl::entry_fn::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 12usize]>>
  38:     0x7f105d81d2f3 - <rustc_query_impl[c1f81d4ed970b77f]::query_impl::entry_fn::dynamic_query::{closure#2} as core[e53a522e144fbf44]::ops::function::FnOnce<(rustc_middle[f5b3ce8587b47ad6]::ty::context::TyCtxt, ())>>::call_once
  39:     0x7f105d81cc0a - rustc_query_system[d1b725211d241e33]::query::plumbing::try_execute_query::<rustc_query_impl[c1f81d4ed970b77f]::DynamicConfig<rustc_query_system[d1b725211d241e33]::query::caches::SingleCache<rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 12usize]>>, false, false, false>, rustc_query_impl[c1f81d4ed970b77f]::plumbing::QueryCtxt, false>
  40:     0x7f105d81c9c5 - rustc_query_impl[c1f81d4ed970b77f]::query_impl::entry_fn::get_query_non_incr::__rust_end_short_backtrace
  41:     0x7f105d823bd8 - rustc_interface[f1e0aa0964ecdd2d]::passes::analysis
  42:     0x7f105d823ae9 - rustc_query_impl[c1f81d4ed970b77f]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[c1f81d4ed970b77f]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 1usize]>>
  43:     0x7f105ddb9125 - rustc_query_system[d1b725211d241e33]::query::plumbing::try_execute_query::<rustc_query_impl[c1f81d4ed970b77f]::DynamicConfig<rustc_query_system[d1b725211d241e33]::query::caches::SingleCache<rustc_middle[f5b3ce8587b47ad6]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[c1f81d4ed970b77f]::plumbing::QueryCtxt, false>
  44:     0x7f105ddb8e89 - rustc_query_impl[c1f81d4ed970b77f]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  45:     0x7f105dc327d5 - rustc_interface[f1e0aa0964ecdd2d]::interface::run_compiler::<core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>, rustc_driver_impl[82aae3524ab0b7f8]::run_compiler::{closure#0}>::{closure#0}
  46:     0x7f105ddd0f98 - std[7cf124c558fcb2bf]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[f1e0aa0964ecdd2d]::util::run_in_thread_with_globals<rustc_interface[f1e0aa0964ecdd2d]::util::run_in_thread_pool_with_globals<rustc_interface[f1e0aa0964ecdd2d]::interface::run_compiler<core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>, rustc_driver_impl[82aae3524ab0b7f8]::run_compiler::{closure#0}>::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>
  47:     0x7f105ddd0dc4 - <<std[7cf124c558fcb2bf]::thread::Builder>::spawn_unchecked_<rustc_interface[f1e0aa0964ecdd2d]::util::run_in_thread_with_globals<rustc_interface[f1e0aa0964ecdd2d]::util::run_in_thread_pool_with_globals<rustc_interface[f1e0aa0964ecdd2d]::interface::run_compiler<core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>, rustc_driver_impl[82aae3524ab0b7f8]::run_compiler::{closure#0}>::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[e53a522e144fbf44]::result::Result<(), rustc_span[19fea007627efb2]::ErrorGuaranteed>>::{closure#1} as core[e53a522e144fbf44]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  48:     0x7f1058d991e5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h5b233556e8a86423
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/alloc/src/boxed.rs:2016:9
  49:     0x7f1058d991e5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9f9dc4d80a9c44c9
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/alloc/src/boxed.rs:2016:9
  50:     0x7f1058d991e5 - std::sys::pal::unix::thread::Thread::new::thread_start::hdbff39a3a9a3c450
                               at /rustc/502ce8287bc3c86dca07acc38c5ff9431a6097be/library/std/src/sys/pal/unix/thread.rs:108:17
  51:     0x7f1058b4a9eb - <unknown>
  52:     0x7f1058bce7cc - <unknown>
  53:                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: rustc 1.78.0-nightly (502ce8287 2024-02-14) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [hir_crate] getting the crate HIR
#1 [hir_attrs] getting HIR owner attributes in ``
#2 [entry_fn] looking up the entry function of a crate
#3 [analysis] running analysis passes on this crate
end of query stack
error: cannot determine resolution for the attribute macro `derive`
 --> /tmp/icemaker_global_tempdir.a2iOjzPWxH9q/rustc_testrunner_tmpdir_reporting.z3u82pkTiRc4/mvce.rs:1:4
  |
1 | #![derive(Clone, Copy)]
  |    ^^^^^^
  |
  = note: import resolution is stuck, try simplifying macro imports

error: cannot determine resolution for the macro `addr_of`
 --> /tmp/icemaker_global_tempdir.a2iOjzPWxH9q/rustc_testrunner_tmpdir_reporting.z3u82pkTiRc4/mvce.rs:6:14
  |
6 |     let v = *addr_of!(data).cast();
  |              ^^^^^^^
  |
  = note: import resolution is stuck, try simplifying macro imports

error: aborting due to 2 previous errors

[matthiaskrgr]

#121071 cc @nnethercote

[jieyouxu]

@rustbot label +D-diagnostic-infra +S-has-mcve -needs-triage