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Showing content from https://github.com/rust-lang/rust/issues/122399 below:

the len is 5 but the index is 5` · Issue #122399 · rust-lang/rust · GitHub

warning: static `TEST2` is never used
 --> /tmp/icemaker_global_tempdir.VX9jN0SNTvXS/rustc_testrunner_tmpdir_reporting.oNybMUzdaDH5/mvce.rs:1:12
  |
1 | static mut TEST2: &'static mut [i32] = &mut [0, 1, 2];
  |            ^^^^^
  |
  = note: `#[warn(dead_code)]` on by default

thread 'rustc' panicked at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/compiler/rustc_middle/src/hir/mod.rs:131:44:
index out of bounds: the len is 5 but the index is 5
stack backtrace:
   0:     0x7f4e5964f6f2 - std::backtrace_rs::backtrace::libunwind::trace::h88547ccd0750bcc5
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
   1:     0x7f4e5964f6f2 - std::backtrace_rs::backtrace::trace_unsynchronized::hc14f662a9b0401aa
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f4e5964f6f2 - std::sys_common::backtrace::_print_fmt::h07146244765e2a09
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7f4e5964f6f2 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5c8264a9859d052b
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f4e596a07fc - core::fmt::rt::Argument::fmt::h9ca9e08086b797e7
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/core/src/fmt/rt.rs:142:9
   5:     0x7f4e596a07fc - core::fmt::write::h8b40f2214bb14880
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/core/src/fmt/mod.rs:1153:17
   6:     0x7f4e5964414f - std::io::Write::write_fmt::h02aeae87b3e9139f
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/io/mod.rs:1843:15
   7:     0x7f4e5964f4c4 - std::sys_common::backtrace::_print::h23cf181c7ee884c0
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7f4e5964f4c4 - std::sys_common::backtrace::print::ha8c43be89c69bb35
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7f4e596521cb - std::panicking::default_hook::{{closure}}::h5850daabba95add3
  10:     0x7f4e59651f23 - std::panicking::default_hook::h927208de7c8aa04a
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/panicking.rs:292:9
  11:     0x7f4e562a393f - std[16fa80a9100f94e9]::panicking::update_hook::<alloc[7bbb032d5977675a]::boxed::Box<rustc_driver_impl[93973095071799d4]::install_ice_hook::{closure#0}>>::{closure#0}
  12:     0x7f4e59652930 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hef4f571603a76142
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/alloc/src/boxed.rs:2034:9
  13:     0x7f4e59652930 - std::panicking::rust_panic_with_hook::hf4470ff416e0f85c
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/panicking.rs:783:13
  14:     0x7f4e59652672 - std::panicking::begin_panic_handler::{{closure}}::hc33ab4a8553711f1
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/panicking.rs:657:13
  15:     0x7f4e5964fbc6 - std::sys_common::backtrace::__rust_end_short_backtrace::heea4e6144f841498
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7f4e596523a4 - rust_begin_unwind
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/panicking.rs:645:5
  17:     0x7f4e5969cd15 - core::panicking::panic_fmt::h6b47fc784c42a44f
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/core/src/panicking.rs:72:14
  18:     0x7f4e5969cf62 - core::panicking::panic_bounds_check::h40920a00b2e8645f
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/core/src/panicking.rs:209:5
  19:     0x7f4e5773cba5 - rustc_query_impl[388e884d96e7c885]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[388e884d96e7c885]::query_impl::opt_local_def_id_to_hir_id::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1566db9aa553dc1e]::query::erase::Erased<[u8; 8usize]>>
  20:     0x7f4e5773c137 - rustc_query_system[be268ab4dd4fe2c4]::query::plumbing::try_execute_query::<rustc_query_impl[388e884d96e7c885]::DynamicConfig<rustc_query_system[be268ab4dd4fe2c4]::query::caches::VecCache<rustc_span[b32d8a6dd76386fe]::def_id::LocalDefId, rustc_middle[1566db9aa553dc1e]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[388e884d96e7c885]::plumbing::QueryCtxt, false>
  21:     0x7f4e5773bc89 - rustc_query_impl[388e884d96e7c885]::query_impl::opt_local_def_id_to_hir_id::get_query_non_incr::__rust_end_short_backtrace
  22:     0x7f4e5566df6b - rustc_hir_analysis[a25e4a65a289fc30]::collect::type_of::type_of
  23:     0x7f4e5765eaa2 - rustc_query_impl[388e884d96e7c885]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[388e884d96e7c885]::query_impl::type_of::dynamic_query::{closure#2}::{closure#0}, rustc_middle[1566db9aa553dc1e]::query::erase::Erased<[u8; 8usize]>>
  24:     0x7f4e5765d559 - rustc_query_system[be268ab4dd4fe2c4]::query::plumbing::try_execute_query::<rustc_query_impl[388e884d96e7c885]::DynamicConfig<rustc_query_system[be268ab4dd4fe2c4]::query::caches::DefIdCache<rustc_middle[1566db9aa553dc1e]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[388e884d96e7c885]::plumbing::QueryCtxt, false>
  25:     0x7f4e5765d063 - rustc_query_impl[388e884d96e7c885]::query_impl::type_of::get_query_non_incr::__rust_end_short_backtrace
  26:     0x7f4e5813c19c - <rustc_middle[1566db9aa553dc1e]::ty::instance::Instance>::ty
  27:     0x7f4e49c1a91c - rustc_codegen_cranelift[6d40d3b611a797fa]::constant::data_id_for_static
  28:     0x7f4e49c18942 - <rustc_codegen_cranelift[6d40d3b611a797fa]::constant::ConstantCx>::finalize
  29:     0x7f4e49c21be3 - rustc_codegen_cranelift[6d40d3b611a797fa]::driver::aot::module_codegen::{closure#0}
  30:     0x7f4e49c20297 - rustc_codegen_cranelift[6d40d3b611a797fa]::driver::aot::module_codegen
  31:     0x7f4e49c2c68c - rustc_codegen_cranelift[6d40d3b611a797fa]::driver::aot::run_aot
  32:     0x7f4e49c5ba71 - <rustc_codegen_cranelift[6d40d3b611a797fa]::CraneliftCodegenBackend as rustc_codegen_ssa[ea620ae6e0f9d31]::traits::backend::CodegenBackend>::codegen_crate
  33:     0x7f4e57f84045 - rustc_interface[de72e7e0dc20aa2a]::passes::start_codegen
  34:     0x7f4e57f82e33 - <rustc_interface[de72e7e0dc20aa2a]::queries::Queries>::codegen_and_build_linker
  35:     0x7f4e585f0131 - rustc_interface[de72e7e0dc20aa2a]::interface::run_compiler::<core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>, rustc_driver_impl[93973095071799d4]::run_compiler::{closure#0}>::{closure#0}
  36:     0x7f4e585e84d7 - std[16fa80a9100f94e9]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[de72e7e0dc20aa2a]::util::run_in_thread_with_globals<rustc_interface[de72e7e0dc20aa2a]::util::run_in_thread_pool_with_globals<rustc_interface[de72e7e0dc20aa2a]::interface::run_compiler<core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>, rustc_driver_impl[93973095071799d4]::run_compiler::{closure#0}>::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>
  37:     0x7f4e585e8304 - <<std[16fa80a9100f94e9]::thread::Builder>::spawn_unchecked_<rustc_interface[de72e7e0dc20aa2a]::util::run_in_thread_with_globals<rustc_interface[de72e7e0dc20aa2a]::util::run_in_thread_pool_with_globals<rustc_interface[de72e7e0dc20aa2a]::interface::run_compiler<core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>, rustc_driver_impl[93973095071799d4]::run_compiler::{closure#0}>::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[57c9baa80fbe8163]::result::Result<(), rustc_span[b32d8a6dd76386fe]::ErrorGuaranteed>>::{closure#1} as core[57c9baa80fbe8163]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  38:     0x7f4e5965c135 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc7bf8226d462e248
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/alloc/src/boxed.rs:2020:9
  39:     0x7f4e5965c135 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0c8e4067a29a93ad
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/alloc/src/boxed.rs:2020:9
  40:     0x7f4e5965c135 - std::sys::pal::unix::thread::Thread::new::thread_start::hcc7d14588e2fbcf6
                               at /rustc/7de1a1f6db26cf7af43cca74819118428e6317ee/library/std/src/sys/pal/unix/thread.rs:108:17
  41:     0x7f4e532a955a - <unknown>
  42:     0x7f4e53326a3c - <unknown>
  43:                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 (7de1a1f6d 2024-03-12) running on x86_64-unknown-linux-gnu

note: compiler flags: -Z codegen-backend=cranelift -Z dump-mir-dir=dir

query stack during panic:
#0 [opt_local_def_id_to_hir_id] getting HIR ID of `TEST2::{constant#0}`
#1 [type_of] computing type of `TEST2::{constant#0}`
end of query stack
warning: 1 warning emitted



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