Closed
Description
auto-reduced (treereduce-rust):
fn main() {
let _ = #[cfg_eval]
#[cfg( = , , )]
0;
}
original:
#![feature(cfg_eval)]
#![feature(stmt_expr_attributes)]
fn main() {
let _ = #[cfg_eval] #[cfg(name = "...", cfg(FALSE), cfg(FALSE))] 0;
//~^ ERROR removing an expression is not supported in this position
}Version information
rustc 1.82.0-nightly (a73bc4a13 2024-08-16)
binary: rustc
commit-hash: a73bc4a131d94eba633c4c572a28e0bf94a67530
commit-date: 2024-08-16
host: x86_64-unknown-linux-gnu
release: 1.82.0-nightly
LLVM version: 19.1.0
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0658]: attributes on expressions are experimental
--> /tmp/icemaker_global_tempdir.P8GwvQiqbOKy/rustc_testrunner_tmpdir_reporting.kwFlrMqR8nnW/mvce.rs:2:13
|
2 | let _ = #[cfg_eval]
| ^^^^^^^^^^^
|
= note: see issue #15701 <https://github.com/rust-lang/rust/issues/15701> for more information
= help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
= note: this compiler was built on 2024-08-16; consider upgrading it if it is out of date
error: expected unsuffixed literal, found `=`
--> /tmp/icemaker_global_tempdir.P8GwvQiqbOKy/rustc_testrunner_tmpdir_reporting.kwFlrMqR8nnW/mvce.rs:3:12
|
3 | #[cfg( = , , )]
| ^
error[E0658]: use of unstable library feature 'cfg_eval': `cfg_eval` is a recently implemented feature
--> /tmp/icemaker_global_tempdir.P8GwvQiqbOKy/rustc_testrunner_tmpdir_reporting.kwFlrMqR8nnW/mvce.rs:2:15
|
2 | let _ = #[cfg_eval]
| ^^^^^^^^
|
= note: see issue #82679 <https://github.com/rust-lang/rust/issues/82679> for more information
= help: add `#![feature(cfg_eval)]` to the crate attributes to enable
= note: this compiler was built on 2024-08-16; consider upgrading it if it is out of date
thread 'rustc' panicked at compiler/rustc_parse/src/parser/mod.rs:241:9:
assertion failed: parser_range.start >= start_pos && parser_range.end >= start_pos
stack backtrace:
0: 0x766de83ac32d - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hbb42d93700eab6e5
1: 0x766de8a05297 - core::fmt::write::hede989e4e7d14b6d
2: 0x766de998cd51 - std::io::Write::write_fmt::h7a42f27b08b157f5
3: 0x766de83aea0b - std::panicking::default_hook::{{closure}}::hc8a48bf7f87d4f00
4: 0x766de83ae67e - std::panicking::default_hook::h722ce6f9c5e65f69
5: 0x766de7543fb9 - std[5f115fdff94c2120]::panicking::update_hook::<alloc[587b8234a862f141]::boxed::Box<rustc_driver_impl[818abaa6828b5c02]::install_ice_hook::{closure#0}>>::{closure#0}
6: 0x766de83af327 - std::panicking::rust_panic_with_hook::h6b96b15aea6f391f
7: 0x766de83aefb3 - std::panicking::begin_panic_handler::{{closure}}::h78f98703de9c52d7
8: 0x766de83ac7e9 - std::sys::backtrace::__rust_end_short_backtrace::he797a316ee99c3ac
9: 0x766de83aecb4 - rust_begin_unwind
10: 0x766de55e1c93 - core::panicking::panic_fmt::hfd35dc75e555f48a
11: 0x766de54a457c - core::panicking::panic::hec3c35fa0f838a8a
12: 0x766de8f8e90e - <rustc_parse[5e692a80545cfc79]::parser::Parser>::parse_expr_force_collect
13: 0x766de73631b6 - <<rustc_builtin_macros[cd55725283bcdb35]::cfg_eval::CfgEval>::configure_annotatable::{closure#5} as core[83194bb5562a103a]::ops::function::FnOnce<(&mut rustc_parse[5e692a80545cfc79]::parser::Parser,)>>::call_once
14: 0x766de9927604 - rustc_builtin_macros[cd55725283bcdb35]::cfg_eval::cfg_eval
15: 0x766de73570a5 - <rustc_builtin_macros[cd55725283bcdb35]::cfg_eval::expand as rustc_expand[ffb2cc9a288afecc]::base::MultiItemModifier>::expand
16: 0x766de50c17e8 - <rustc_expand[ffb2cc9a288afecc]::expand::MacroExpander>::fully_expand_fragment
17: 0x766de9b7f05f - <rustc_expand[ffb2cc9a288afecc]::expand::MacroExpander>::expand_crate
18: 0x766de8f70e55 - rustc_interface[aec65d594c25cb1a]::passes::resolver_for_lowering_raw
19: 0x766de8f703db - rustc_query_impl[4f1661ee14cf0c15]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[4f1661ee14cf0c15]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2}::{closure#0}, rustc_middle[ccb09bcce8b60fe7]::query::erase::Erased<[u8; 16usize]>>
20: 0x766de8f703c9 - <rustc_query_impl[4f1661ee14cf0c15]::query_impl::resolver_for_lowering_raw::dynamic_query::{closure#2} as core[83194bb5562a103a]::ops::function::FnOnce<(rustc_middle[ccb09bcce8b60fe7]::ty::context::TyCtxt, ())>>::call_once
21: 0x766de9963dd2 - rustc_query_system[df9560578d31cea0]::query::plumbing::try_execute_query::<rustc_query_impl[4f1661ee14cf0c15]::DynamicConfig<rustc_query_system[df9560578d31cea0]::query::caches::SingleCache<rustc_middle[ccb09bcce8b60fe7]::query::erase::Erased<[u8; 16usize]>>, false, false, false>, rustc_query_impl[4f1661ee14cf0c15]::plumbing::QueryCtxt, false>
22: 0x766de9963a6d - rustc_query_impl[4f1661ee14cf0c15]::query_impl::resolver_for_lowering_raw::get_query_non_incr::__rust_end_short_backtrace
23: 0x766de97d7e5e - rustc_interface[aec65d594c25cb1a]::interface::run_compiler::<core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>, rustc_driver_impl[818abaa6828b5c02]::run_compiler::{closure#0}>::{closure#1}
24: 0x766de987a804 - std[5f115fdff94c2120]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[aec65d594c25cb1a]::util::run_in_thread_with_globals<rustc_interface[aec65d594c25cb1a]::util::run_in_thread_pool_with_globals<rustc_interface[aec65d594c25cb1a]::interface::run_compiler<core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>, rustc_driver_impl[818abaa6828b5c02]::run_compiler::{closure#0}>::{closure#1}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>::{closure#0}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>
25: 0x766de987ae70 - <<std[5f115fdff94c2120]::thread::Builder>::spawn_unchecked_<rustc_interface[aec65d594c25cb1a]::util::run_in_thread_with_globals<rustc_interface[aec65d594c25cb1a]::util::run_in_thread_pool_with_globals<rustc_interface[aec65d594c25cb1a]::interface::run_compiler<core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>, rustc_driver_impl[818abaa6828b5c02]::run_compiler::{closure#0}>::{closure#1}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>::{closure#0}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[83194bb5562a103a]::result::Result<(), rustc_span[3220205ed180bad]::ErrorGuaranteed>>::{closure#1} as core[83194bb5562a103a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
26: 0x766de987b1eb - std::sys::pal::unix::thread::Thread::new::thread_start::h48acfbfeb014780f
27: 0x766deafdc39d - <unknown>
28: 0x766deb06149c - <unknown>
29: 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 1.82.0-nightly (a73bc4a13 2024-08-16) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [resolver_for_lowering_raw] getting the resolver for lowering
end of query stack
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0658`.
@rustbot label +F-cfg_eval +F-stmt_expr_attributes