Description
auto-reduced (treereduce-rust):
macro_rules! len {
() => {
target
};
}
fn main() {
let val: [str; len!()] = [];
}
original:
#![deny("{}", equal(&1, &2))]
macro_rules! len {
() => (target) //~ ERROR trailing semicolon
//~| WARN this was previously accepted
}
fn main() {
let val: [str; len!()] = [];
}Version information
rustc 1.81.0-nightly (2e6fc4254 2024-07-20)
binary: rustc
commit-hash: 2e6fc425411280c658d852813de01c5157255088
commit-date: 2024-07-20
host: x86_64-unknown-linux-gnu
release: 1.81.0-nightly
LLVM version: 18.1.7
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0425]: cannot find value `target` in this scope
--> /tmp/icemaker_global_tempdir.1khAqktZak0k/rustc_testrunner_tmpdir_reporting.F2c9o1Y4kXrG/mvce.rs:3:9
|
3 | target
| ^^^^^^ not found in this scope
...
8 | let val: [str; len!()] = [];
| ------ in this macro invocation
|
= note: this error originates in the macro `len` (in Nightly builds, run with -Z macro-backtrace for more info)
thread 'rustc' panicked at compiler/rustc_ast_lowering/src/lib.rs:503:9:
adding a def'n for node-id NodeId(18) and def kind AnonConst but a previous def'n exists: DefKey { parent: Some(DefIndex(4)), disambiguated_data: DisambiguatedDefPathData { data: AnonConst, disambiguator: 0 } }
stack backtrace:
0: 0x7e8412c083a5 - std::backtrace_rs::backtrace::libunwind::trace::h160e615c518ecb01
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
1: 0x7e8412c083a5 - std::backtrace_rs::backtrace::trace_unsynchronized::he30c6d2f98d2efdc
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7e8412c083a5 - std::sys::backtrace::_print_fmt::hb87cad28f2e90a0b
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/sys/backtrace.rs:65:5
3: 0x7e8412c083a5 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h362429114acc76fb
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/sys/backtrace.rs:40:26
4: 0x7e8412c57eab - core::fmt::rt::Argument::fmt::h2dd3e5813b018ccc
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/core/src/fmt/rt.rs:173:76
5: 0x7e8412c57eab - core::fmt::write::haceebbcd70688c9b
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/core/src/fmt/mod.rs:1182:21
6: 0x7e8412bfce7f - std::io::Write::write_fmt::h7c7b83fdf5105f1d
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/io/mod.rs:1827:15
7: 0x7e8412c0ab91 - std::sys::backtrace::BacktraceLock::print::hd97590b35fdf3d35
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/sys/backtrace.rs:43:9
8: 0x7e8412c0ab91 - std::panicking::default_hook::{{closure}}::h587635c60073753d
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/panicking.rs:269:22
9: 0x7e8412c0a86c - std::panicking::default_hook::h41bedcdd5e6a0e44
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/panicking.rs:296:9
10: 0x7e840f024e1a - std[f9e60369e5bdbf77]::panicking::update_hook::<alloc[f72c5bad8b9f51f]::boxed::Box<rustc_driver_impl[23129d3f9f762646]::install_ice_hook::{closure#0}>>::{closure#0}
11: 0x7e8412c0b55f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h7651476b4c558d70
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/alloc/src/boxed.rs:2084:9
12: 0x7e8412c0b55f - std::panicking::rust_panic_with_hook::heee9f152ffb5d0c8
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/panicking.rs:808:13
13: 0x7e8412c0b187 - std::panicking::begin_panic_handler::{{closure}}::h808b135ae5150977
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/panicking.rs:674:13
14: 0x7e8412c08869 - std::sys::backtrace::__rust_end_short_backtrace::h3c8a02e9918c1a26
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/sys/backtrace.rs:168:18
15: 0x7e8412c0ae14 - rust_begin_unwind
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/panicking.rs:665:5
16: 0x7e8412c54463 - core::panicking::panic_fmt::h124ff2929e2b97c8
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/core/src/panicking.rs:74:14
17: 0x7e8412045276 - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::create_def.cold
18: 0x7e8410ccdfdd - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_anon_const_to_anon_const
19: 0x7e8410ccdc72 - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_anon_const_to_const_arg_direct
20: 0x7e8410ccd9f3 - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_array_length
21: 0x7e8410cf9b8f - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_ty_direct
22: 0x7e8410cae238 - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_block_noalloc
23: 0x7e8410cd4d10 - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_maybe_coroutine_body
24: 0x7e8410cee69f - <rustc_ast_lowering[d5c02056e301041c]::LoweringContext>::lower_item_kind
25: 0x7e8410cd215f - <rustc_ast_lowering[d5c02056e301041c]::item::ItemLowerer>::lower_node
26: 0x7e8410ccfb79 - rustc_ast_lowering[d5c02056e301041c]::lower_to_hir
27: 0x7e84114c5260 - rustc_query_impl[7076d3a069d488ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7076d3a069d488ea]::query_impl::hir_crate::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 8usize]>>
28: 0x7e84114c2302 - rustc_query_system[eb2b374bcd8a9022]::query::plumbing::try_execute_query::<rustc_query_impl[7076d3a069d488ea]::DynamicConfig<rustc_query_system[eb2b374bcd8a9022]::query::caches::SingleCache<rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[7076d3a069d488ea]::plumbing::QueryCtxt, false>
29: 0x7e84114c1f1e - rustc_query_impl[7076d3a069d488ea]::query_impl::hir_crate::get_query_non_incr::__rust_end_short_backtrace
30: 0x7e8410e9a064 - rustc_query_impl[7076d3a069d488ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7076d3a069d488ea]::query_impl::hir_attrs::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 8usize]>>
31: 0x7e8410e9961f - rustc_query_system[eb2b374bcd8a9022]::query::plumbing::try_execute_query::<rustc_query_impl[7076d3a069d488ea]::DynamicConfig<rustc_query_system[eb2b374bcd8a9022]::query::caches::VecCache<rustc_hir[2699c16870db6088]::hir_id::OwnerId, rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[7076d3a069d488ea]::plumbing::QueryCtxt, false>
32: 0x7e8410e9938f - rustc_query_impl[7076d3a069d488ea]::query_impl::hir_attrs::get_query_non_incr::__rust_end_short_backtrace
33: 0x7e8410878006 - <rustc_middle[f5371164b7025427]::hir::map::Map>::attrs
34: 0x7e84117af401 - rustc_passes[141401c4575c1f66]::entry::entry_fn
35: 0x7e84117af398 - rustc_query_impl[7076d3a069d488ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7076d3a069d488ea]::query_impl::entry_fn::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 12usize]>>
36: 0x7e84117af36f - <rustc_query_impl[7076d3a069d488ea]::query_impl::entry_fn::dynamic_query::{closure#2} as core[c927cdc4da4eb0de]::ops::function::FnOnce<(rustc_middle[f5371164b7025427]::ty::context::TyCtxt, ())>>::call_once
37: 0x7e84117aec88 - rustc_query_system[eb2b374bcd8a9022]::query::plumbing::try_execute_query::<rustc_query_impl[7076d3a069d488ea]::DynamicConfig<rustc_query_system[eb2b374bcd8a9022]::query::caches::SingleCache<rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 12usize]>>, false, false, false>, rustc_query_impl[7076d3a069d488ea]::plumbing::QueryCtxt, false>
38: 0x7e84117aea29 - rustc_query_impl[7076d3a069d488ea]::query_impl::entry_fn::get_query_non_incr::__rust_end_short_backtrace
39: 0x7e8410b0ffb2 - rustc_interface[635a4d36e766d1e0]::passes::analysis
40: 0x7e8410b0fdc7 - rustc_query_impl[7076d3a069d488ea]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[7076d3a069d488ea]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 1usize]>>
41: 0x7e84114c3725 - rustc_query_system[eb2b374bcd8a9022]::query::plumbing::try_execute_query::<rustc_query_impl[7076d3a069d488ea]::DynamicConfig<rustc_query_system[eb2b374bcd8a9022]::query::caches::SingleCache<rustc_middle[f5371164b7025427]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[7076d3a069d488ea]::plumbing::QueryCtxt, false>
42: 0x7e84114c348f - rustc_query_impl[7076d3a069d488ea]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
43: 0x7e84114002c5 - rustc_interface[635a4d36e766d1e0]::interface::run_compiler::<core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>, rustc_driver_impl[23129d3f9f762646]::run_compiler::{closure#0}>::{closure#1}
44: 0x7e8411394189 - std[f9e60369e5bdbf77]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[635a4d36e766d1e0]::util::run_in_thread_with_globals<rustc_interface[635a4d36e766d1e0]::util::run_in_thread_pool_with_globals<rustc_interface[635a4d36e766d1e0]::interface::run_compiler<core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>, rustc_driver_impl[23129d3f9f762646]::run_compiler::{closure#0}>::{closure#1}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>::{closure#0}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>
45: 0x7e8411393f3a - <<std[f9e60369e5bdbf77]::thread::Builder>::spawn_unchecked_<rustc_interface[635a4d36e766d1e0]::util::run_in_thread_with_globals<rustc_interface[635a4d36e766d1e0]::util::run_in_thread_pool_with_globals<rustc_interface[635a4d36e766d1e0]::interface::run_compiler<core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>, rustc_driver_impl[23129d3f9f762646]::run_compiler::{closure#0}>::{closure#1}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>::{closure#0}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[c927cdc4da4eb0de]::result::Result<(), rustc_span[8f3a5487dfe29266]::ErrorGuaranteed>>::{closure#1} as core[c927cdc4da4eb0de]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
46: 0x7e8412c155bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::haeea406f77e87cac
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/alloc/src/boxed.rs:2070:9
47: 0x7e8412c155bb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h024bb75f9bcc5dfb
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/alloc/src/boxed.rs:2070:9
48: 0x7e8412c155bb - std::sys::pal::unix::thread::Thread::new::thread_start::h106d07b62ccda4e0
at /rustc/2e6fc425411280c658d852813de01c5157255088/library/std/src/sys/pal/unix/thread.rs:108:17
49: 0x7e84129a9ded - <unknown>
50: 0x7e8412a2d0dc - <unknown>
51: 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: please make sure that you have updated to the latest nightly
note: rustc 1.81.0-nightly (2e6fc4254 2024-07-20) 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 ``
end of query stack
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0425`.
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Category: This is a bug.Category: This is a bug.Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️Critical priorityCritical priorityStatus: This bug is tracked inside the repo by a `known-bug` test.Status: This bug is tracked inside the repo by a `known-bug` test.Relevant to the compiler team, which will review and decide on the PR/issue.Relevant to the compiler team, which will review and decide on the PR/issue.Performance or correctness regression from stable to beta.Performance or correctness regression from stable to beta.