ICE: no non-'#[track_caller]' frame found

[matthiaskrgr]

snippet:

#[track_caller]
static no_mangle: u32 = {
    unimplemented!();
};

Version information

rustc 1.84.0-nightly (0037048da 2024-10-16)
binary: rustc
commit-hash: 0037048da8ed19feef7ee1437f123a88a7342b33
commit-date: 2024-10-16
host: x86_64-unknown-linux-gnu
release: 1.84.0-nightly
LLVM version: 19.1.1

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

Program output

error[E0601]: `main` function not found in crate `mvce`
 --> /tmp/icemaker_global_tempdir.9mWKQYhpKcQf/rustc_testrunner_tmpdir_reporting.ZvoUyb86p9Bh/mvce.rs:4:3
  |
4 | };
  |   ^ consider adding a `main` function to `/tmp/icemaker_global_tempdir.9mWKQYhpKcQf/rustc_testrunner_tmpdir_reporting.ZvoUyb86p9Bh/mvce.rs`

error[E0739]: attribute should be applied to a function definition
 --> /tmp/icemaker_global_tempdir.9mWKQYhpKcQf/rustc_testrunner_tmpdir_reporting.ZvoUyb86p9Bh/mvce.rs:1:1
  |
1 |   #[track_caller]
  |   ^^^^^^^^^^^^^^^
2 | / static no_mangle: u32 = {
3 | |     unimplemented!();
4 | | };
  | |__- not a function definition

error: internal compiler error: compiler/rustc_const_eval/src/interpret/eval_context.rs:387:9: no non-`#[track_caller]` frame found
   --> /home/matthias/.rustup/toolchains/master/lib/rustlib/src/rust/library/core/src/panicking.rs:335:9
    |
335 |         panic_display(&msg);
    |         ^^^^^^^^^^^^^^^^^^^

thread 'rustc' panicked at compiler/rustc_const_eval/src/interpret/eval_context.rs:387:9:
Box<dyn Any>
stack backtrace:
   0:     0x794bd267a1da - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h9bfc3dcaa7dcd19f
   1:     0x794bd2e03e4a - core::fmt::write::hbfae06088092e203
   2:     0x794bd41aab11 - std::io::Write::write_fmt::h02af9c7f9f7cbb2b
   3:     0x794bd267a032 - std::sys::backtrace::BacktraceLock::print::h891ae704043eaf13
   4:     0x794bd267c516 - std::panicking::default_hook::{{closure}}::h70877a3c3126a3d1
   5:     0x794bd267c360 - std::panicking::default_hook::h1b6dbfbbf2c8fa69
   6:     0x794bd16fba8f - std[50dae06ecd9b895e]::panicking::update_hook::<alloc[419218e354315928]::boxed::Box<rustc_driver_impl[5c793412a60745d2]::install_ice_hook::{closure#0}>>::{closure#0}
   7:     0x794bd267cc28 - std::panicking::rust_panic_with_hook::h84e267ff56671c55
   8:     0x794bd1736101 - std[50dae06ecd9b895e]::panicking::begin_panic::<rustc_errors[6c0f546568541fc3]::ExplicitBug>::{closure#0}
   9:     0x794bd1729136 - std[50dae06ecd9b895e]::sys::backtrace::__rust_end_short_backtrace::<std[50dae06ecd9b895e]::panicking::begin_panic<rustc_errors[6c0f546568541fc3]::ExplicitBug>::{closure#0}, !>
  10:     0x794bd1724970 - std[50dae06ecd9b895e]::panicking::begin_panic::<rustc_errors[6c0f546568541fc3]::ExplicitBug>
  11:     0x794bd173fbb1 - <rustc_errors[6c0f546568541fc3]::diagnostic::BugAbort as rustc_errors[6c0f546568541fc3]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
  12:     0x794bd163d86d - <rustc_errors[6c0f546568541fc3]::DiagCtxtHandle>::span_bug::<rustc_span[8cbfb0bc2691013e]::span_encoding::Span, alloc[419218e354315928]::string::String>
  13:     0x794bd1664dd8 - rustc_middle[4e1d5dc5f38e5925]::util::bug::opt_span_bug_fmt::<rustc_span[8cbfb0bc2691013e]::span_encoding::Span>::{closure#0}
  14:     0x794bd1664e2a - rustc_middle[4e1d5dc5f38e5925]::ty::context::tls::with_opt::<rustc_middle[4e1d5dc5f38e5925]::util::bug::opt_span_bug_fmt<rustc_span[8cbfb0bc2691013e]::span_encoding::Span>::{closure#0}, !>::{closure#0}
  15:     0x794bd16500db - rustc_middle[4e1d5dc5f38e5925]::ty::context::tls::with_context_opt::<rustc_middle[4e1d5dc5f38e5925]::ty::context::tls::with_opt<rustc_middle[4e1d5dc5f38e5925]::util::bug::opt_span_bug_fmt<rustc_span[8cbfb0bc2691013e]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
  16:     0x794bd05df367 - rustc_middle[4e1d5dc5f38e5925]::util::bug::span_bug_fmt::<rustc_span[8cbfb0bc2691013e]::span_encoding::Span>
  17:     0x794bd16b525c - <rustc_const_eval[b5702e0782daf67b]::interpret::eval_context::InterpCx<rustc_const_eval[b5702e0782daf67b]::const_eval::machine::CompileTimeMachine>>::find_closest_untracked_caller_location
  18:     0x794bd3893ad5 - <rustc_const_eval[b5702e0782daf67b]::const_eval::machine::CompileTimeMachine as rustc_const_eval[b5702e0782daf67b]::interpret::machine::Machine>::find_mir_or_eval_fn
  19:     0x794bd3894c09 - <rustc_const_eval[b5702e0782daf67b]::interpret::eval_context::InterpCx<rustc_const_eval[b5702e0782daf67b]::const_eval::machine::CompileTimeMachine>>::init_fn_call
  20:     0x794bd3ff5e02 - rustc_const_eval[b5702e0782daf67b]::const_eval::eval_queries::eval_body_using_ecx::<rustc_middle[4e1d5dc5f38e5925]::mir::interpret::allocation::ConstAllocation>
  21:     0x794bd3fe8101 - rustc_const_eval[b5702e0782daf67b]::const_eval::eval_queries::eval_static_initializer_provider
  22:     0x794bd3fe7ea7 - rustc_query_impl[e6053411f8f7b0cc]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e6053411f8f7b0cc]::query_impl::eval_static_initializer::dynamic_query::{closure#2}::{closure#0}, rustc_middle[4e1d5dc5f38e5925]::query::erase::Erased<[u8; 16usize]>>
  23:     0x794bd3fe7e89 - <rustc_query_impl[e6053411f8f7b0cc]::query_impl::eval_static_initializer::dynamic_query::{closure#2} as core[b55cee407c7ca3a1]::ops::function::FnOnce<(rustc_middle[4e1d5dc5f38e5925]::ty::context::TyCtxt, rustc_span[8cbfb0bc2691013e]::def_id::DefId)>>::call_once
  24:     0x794bd32a7a04 - rustc_query_system[c2531f464b8ca71c]::query::plumbing::try_execute_query::<rustc_query_impl[e6053411f8f7b0cc]::DynamicConfig<rustc_query_system[c2531f464b8ca71c]::query::caches::DefIdCache<rustc_middle[4e1d5dc5f38e5925]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[e6053411f8f7b0cc]::plumbing::QueryCtxt, false>
  25:     0x794bd3d19579 - rustc_query_impl[e6053411f8f7b0cc]::query_impl::eval_static_initializer::get_query_non_incr::__rust_end_short_backtrace
  26:     0x794bd3274f88 - <rustc_middle[4e1d5dc5f38e5925]::hir::map::Map>::par_body_owners::<rustc_hir_analysis[74f006b5970f8749]::check_crate::{closure#3}>::{closure#0}
  27:     0x794bd3272773 - rustc_hir_analysis[74f006b5970f8749]::check_crate
  28:     0x794bd38184d7 - rustc_interface[7bf09400196ba76b]::passes::run_required_analyses
  29:     0x794bd3c33cde - rustc_interface[7bf09400196ba76b]::passes::analysis
  30:     0x794bd3c33cb1 - rustc_query_impl[e6053411f8f7b0cc]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[e6053411f8f7b0cc]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[4e1d5dc5f38e5925]::query::erase::Erased<[u8; 1usize]>>
  31:     0x794bd3d0302e - rustc_query_system[c2531f464b8ca71c]::query::plumbing::try_execute_query::<rustc_query_impl[e6053411f8f7b0cc]::DynamicConfig<rustc_query_system[c2531f464b8ca71c]::query::caches::SingleCache<rustc_middle[4e1d5dc5f38e5925]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[e6053411f8f7b0cc]::plumbing::QueryCtxt, false>
  32:     0x794bd3d02d0f - rustc_query_impl[e6053411f8f7b0cc]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
  33:     0x794bd3b849ac - rustc_interface[7bf09400196ba76b]::interface::run_compiler::<core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>, rustc_driver_impl[5c793412a60745d2]::run_compiler::{closure#0}>::{closure#1}
  34:     0x794bd3c24754 - std[50dae06ecd9b895e]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[7bf09400196ba76b]::util::run_in_thread_with_globals<rustc_interface[7bf09400196ba76b]::util::run_in_thread_pool_with_globals<rustc_interface[7bf09400196ba76b]::interface::run_compiler<core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>, rustc_driver_impl[5c793412a60745d2]::run_compiler::{closure#0}>::{closure#1}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>::{closure#0}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>
  35:     0x794bd3c24b68 - <<std[50dae06ecd9b895e]::thread::Builder>::spawn_unchecked_<rustc_interface[7bf09400196ba76b]::util::run_in_thread_with_globals<rustc_interface[7bf09400196ba76b]::util::run_in_thread_pool_with_globals<rustc_interface[7bf09400196ba76b]::interface::run_compiler<core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>, rustc_driver_impl[5c793412a60745d2]::run_compiler::{closure#0}>::{closure#1}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>::{closure#0}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b55cee407c7ca3a1]::result::Result<(), rustc_span[8cbfb0bc2691013e]::ErrorGuaranteed>>::{closure#1} as core[b55cee407c7ca3a1]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  36:     0x794bd3c2562b - std::sys::pal::unix::thread::Thread::new::thread_start::hd84f0cccf574faa7
  37:     0x794bd541939d - <unknown>
  38:     0x794bd549e49c - <unknown>
  39:                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: please make sure that you have updated to the latest nightly

note: rustc 1.84.0-nightly (0037048da 2024-10-16) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [eval_static_initializer] evaluating initializer of static `no_mangle`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 3 previous errors

Some errors have detailed explanations: E0601, E0739.
For more information about an error, try `rustc --explain E0601`.

[RalfJung]

Uh, we allow that attribute on a static? That makes no sense, that should be an error... right?^^

Cc @rust-lang/wg-const-eval
Cc @jdonszelmann (seems related to rust-lang/compiler-team#796)

[jdonszelmann]

Lmao, yes I'm working on making it easier to set target limitations on attributes

[jdonszelmann]

@rustbot claim

[jdonszelmann]

@rustbot label +A-attributes