Closed
Description
Reminiscent of #99975, which is now closed, but I'm able to reproduce it easily on today's nightly:
struct SegmentJob {
spec: String,
}
pub async fn run() -> Result<(), ()> {
let jobs = get_data();
let Some(job) = jobs.into_iter().next() else {
println!("no jobs!");
return Ok(())
};
println!("should run job {}", job.spec);
Ok(())
}
fn get_data() -> Vec<SegmentJob> {
Default::default()
}I expected to see this happen: typechecks fine.
Instead, this happened:
cargo clippy
Checking broken-mir v0.1.0 (/home/amos/bearcove/broken-mir)
warning: Error finalizing incremental compilation session directory `/home/amos/bearcove/broken-mir/target/debug/incremental/broken_mir-3jg493t7jkrit/s-gdwtcmorgw-1apjoc8-working`: No such file or directory (os error 2)
error: internal compiler error: no errors encountered even though `delay_span_bug` issued
error: internal compiler error: broken MIR in Item(WithOptConstParam { did: DefId(0:7 ~ broken_mir[e8cc]::run::{closure#0}), const_param_did: None }) (after pass PhaseChange-Runtime(Optimized)) at bb29[0]:
use of local _21, which has no storage here
--> src/lib.rs:10:6
|
10 | };
| ^
|
= note: delayed at compiler/rustc_const_eval/src/transform/validate.rs:128:36
thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1530:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust-clippy/issues/new
note: Clippy version: clippy 0.1.65 (f5193a9 2022-09-25)
query stack during panic:
end of query stack
warning: `broken-mir` (lib) generated 1 warning
error: could not compile `broken-mir`; 1 warning emitted
Meta
rustc --version --verbose:
rustc 1.66.0-nightly (f5193a9fc 2022-09-25)
binary: rustc
commit-hash: f5193a9fcc73dc09e41a90c5a2c97fc9acc16032
commit-date: 2022-09-25
host: x86_64-unknown-linux-gnu
release: 1.66.0-nightly
LLVM version: 15.0.0
Backtrace
thread 'rustc' panicked at 'Box<dyn Any>', compiler/rustc_errors/src/lib.rs:1530:13
stack backtrace:
0: std::panicking::begin_panic::<rustc_errors::ExplicitBug>
1: std::panic::panic_any::<rustc_errors::ExplicitBug>
2: <rustc_errors::HandlerInner as core::ops::drop::Drop>::drop
3: core::ptr::drop_in_place::<rustc_session::parse::ParseSess>
4: <alloc::rc::Rc<rustc_session::session::Session> as core::ops::drop::Drop>::drop
5: core::ptr::drop_in_place::<rustc_interface::interface::Compiler>
6: rustc_interface::interface::create_compiler_and_run::<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>
7: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::interface::run_compiler<core::result::Result<(), rustc_errors::ErrorGuaranteed>, rustc_driver::run_compiler::{closure#1}>::{closure#0}, core::result::Result<(), rustc_errors::ErrorGuaranteed>>