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C-bugCategory: This is a bug.Category: This is a bug.I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.T-compilerRelevant 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.
Description
cat hang.rs
#![crate_type = "lib"]
#[no_mangle]
pub fn get_len() -> usize {
[1, 2, 3].iter(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map().collect::<Vec<_>>().len()
}
I expected to see this happen: The compiler compiles successfully or outputs an error message.
Instead, this happened: The code, as provided below, appears to encounter a hang
Command
rustc -C opt-level=0 hang.rs
Meta
rustc --version --verbose
:
rustc 1.73.0 (cc66ad468 2023-10-03)
binary: rustc
commit-hash: cc66ad468955717ab92600c770da8c1601a4ff33
commit-date: 2023-10-03
host: x86_64-unknown-linux-gnu
release: 1.73.0
LLVM version: 17.0.2
The same problem is reproduced on the nightly version(2023-10-15;42b1224e9eb37177f608d3f6a6f2be2ee13902e4
)
Backtrace
error[E0061]: this method takes 0 arguments but 1 argument was supplied
--> hang.rs:4:15
|
4 | [1, 2, 3].iter(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| x).map(|x| ...
| ^^^^ -----
| |
| unexpected argument of type `[closure@hang.rs:4:20: 4:23]`
| help: remove the extra argument
|
note: method defined here
--> /rustc/cc66ad468955717ab92600c770da8c1601a4ff33/library/core/src/slice/mod.rs:1001:12
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C-bugCategory: This is a bug.Category: This is a bug.I-compiletimeIssue: Problems and improvements with respect to compile times.Issue: Problems and improvements with respect to compile times.T-compilerRelevant 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.