jiebi/CodeConvo huggingface dataset:
Change:
| = help: the trait `PartialEq<Foo>` is not implemented for `&&{integer}` = help: the following other types implement trait `PartialEq<Rhs>`: <ins> f128 f16 </ins> f32 f64 i128 i16 i32 i64 <del> i8 isize and 6 others </del> <ins> and 8 others </ins> error[E0369]: binary operation `==` cannot be applied to type `Foo` --> $DIR/binary-op-suggest-deref.rs:60:13

Discussion:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --Playground nightly version: 1.79.0-nightly (2024-03-25 ) This isn't expected since it doesn't seem to hit a label +T-compiler +f-f16andf128 +I-ICE +requires-incomplete-features +S-has-mcve claim <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
label -needs-triage
Minimized:
Looks like it just expects primitives to be . I'm not sure where exactly this assumption comes from, but might as well fix it before the rest of libs support can get merged.
Change:
command.status() } <ins> fn handle_result(result: io::Result<ExitStatus>, cmd: Command) { match result { Err(error) => { eprintln!("Failed to invoke `{:?}`: {}", cmd, error); } Ok(status) => { process::exit(status.code().unwrap_or(1)); } } } </ins> fn main() { match env::args().skip(1).next().as_deref() { Some("--wrapper-version") => {

Discussion:
Since , src/tools/x unconditionally looks for the shell scripts when running. That's good in most cases because it avoids having to run python. However, on old checkouts the shell scripts don't exist and it needs to fall back to using python. cc do you have time to fix this? <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
claim If it can wait for the weekend to pass, then yes. Anyone, feel free to claim of you can do it in the weekend
i could help! Could you give me some pointers on what needs to be done?
What you should do is re-add the code that was removed in , using it when the shell scripts are not found, but x.py is. You could even add an env var that forces the use of python, but that's a later step.
I see! Okay I'll give this a shot! But I may need more time than just the weekends cause I probably need some time to figure things out. But if it's urgent then feel free to unassign me claim
I don't think this is necessary, there shouldn't be any functionality that's available in python but not shell.
It is future-proofing for when python does get used only when building bootstrap, and the shell scripts won't be able to call python
That can be done with a function argument so it's not exposed to users.
Yes, it can work like this.
Hi ! Currently working on this. Could you list out the steps needed to replicate this issue so I could get a bit more context of the problem? Thank you!
install it from a current version of the repository, then check out any commit from before and run . It will says "x.py not found" even though it exists in the repository.
Err sorry, that was the commit that changes src/tools/x - you want the commit that initially the ./x and x.ps1 scripts.
One reason may be because they work on a pr that started before this commit, and that (miraculously) didn't conflict. Another reason would have been because the work was done on stable/beta, but I think the scripts are now on stable (correct me if I'm wrong)
Change:
self.suggest_trait_fn_ty_for_impl_fn_infer(hir_id, None) { infer_replacements.push((output.span, suggested_ty.to_string())); <del> suggested_ty </del> <ins> Ty::new_error_with_message(self.tcx(), output.span, suggested_ty.to_string()) </ins> } else { visitor.visit_ty(output); self.ast_ty_to_ty(output)

Discussion:
<!-- [31mICE[0m: Rustc '-Zincremental-verify-ich=yes -Cincremental=<dir-Cdebuginfo=2' 'error: internal compiler error: unexpected region encountered in variance inference: ReLateParam(DefId(0:22 ~ 4CE26EEF2326F71D6A2A2B20D320CA8739959CBFE29E1EDC8A012C82A71A1C39[9323]::{impl}::deserialize), BrNamed(DefId(0:27 ~ 4CE26EEF2326F71D6A2A2B20D320CA8739959CBFE29E1EDC8A012C82A71A1C39[9323]::Deserialize::deserialize::'), '))', 'error: internal compiler error: unexpected region encountered in variance inference: ReLateParam(DefId(0:22 ~ 4CE26EEF2326F71D6A2A2B20D320CA8739959CBFE29E1EDC8A012C82A71A1C39[9323]::{impl}::deserialize), BrNamed(DefId(0:27 ~ 4CE26EEF2326F71D6A2A2B20D320CA8739959CBFE29E1EDC8A012C82A71A1C39[9323]::Deserialize::deserialize::'), '))' File: --auto-reduced (treereduce-rust): &lt;details&lt;summary&lt;strongoriginal code&lt;/strong&lt;/summary&lt;poriginal: </p</detailsVersion information ` Command: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongProgram output</strong</summary<p</p</details<!-- query stack: note: compiler flags: -Z incremental-verify-ich=yes -C incremental=[REDACTED] -C debuginfo=2 [cratevariances] computing the variances for items in this crate [variancesof] computing the variances of [checkwellformed] checking that is well-formed [checkmodtype_wf] checking that types are well-formed in top-level module [analysis] running analysis passes on this crate --
cc
Minimized:
Change:
= note: see issue #37854 <https://github.com/rust-lang/rust/issues/37854> for more information = help: add `#![feature(exclusive_range_pattern)]` to the crate attributes to enable = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date <ins> = help: use an inclusive range pattern, like N..=M </ins> error: aborting due to 5 previous errors

Discussion:
Came across this when a beginner was very confused about what was wrong with their ; the words "is experimental" and the link to the issue was not sufficient for their discovering what the problem/solution was. The suggested inclusive range pattern doesn't need to contain the actual matching value if producing it is hard or impossible, printing something like is still better than nothing. This issue may of course be ignored/closed if this nightly feature is just about ready to be stabilized or something. No response label +D-terse +C-enhancement +F-exclusiverangepattern <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
claim
Change:
if receiver.ends_with(&method_call) { None  // do not suggest code that is already there (#53348) } else { <del> Some(format!("{}{}", receiver, method_call)) </del> <ins> /* methods defined in `method_call_list` will overwrite `.clone()` in copy of `receiver` */ let method_call_list = [".to_vec()", ".to_string()"]; if receiver.ends_with(".clone()") && method_call_list.contains(&method_call.as_str()){ // created copy of `receiver` because we don't want other // suggestion to get affected let mut new_receiver = receiver.clone(); let max_len = new_receiver.rfind(".").unwrap(); new_receiver.truncate(max_len); Some(format!("{}{}", new_receiver, method_call)) } else { Some(format!("{}{}", receiver, method_call)) } </ins> } }) .collect::<Vec<_>>(); if !suggestions.is_empty() {

Discussion:
Let's say you have the following (simplified) code: () This results in the following error: The suggested fix will work, but already copies the data so the extra is wasteful. The error message should instead suggest . This is an error you can run into if was previously of type and you changed it to a slice after writing the rest of the code.
Note: this kind of improvement applies to too: Err:
Change:
//!     so the "quality" of `/dev/random` is not better than `/dev/urandom` in most cases. //!     However, this means that `/dev/urandom` can yield somewhat predictable randomness //!     if the entropy pool is very small, such as immediately after first booting. <del> //!     If an application likely to be run soon after first booting, or on a system with very //!     few entropy sources, one should consider using `/dev/random` via `ReaderRng`. </del> <ins> //!     Linux 3,17 added `getrandom(2)` system call which solves the issue: it blocks if entropy //!     pool is not initialized yet, but it does not block once initialized. //!     `OsRng` tries to use `getrandom(2)` if available, and use `/dev/urandom` fallback if not. //!     If an application does not have `getrandom` and likely to be run soon after first booting, //!     or on a system with very few entropy sources, one should consider using `/dev/random` via //!     `ReaderRng`. </ins> //! -   On some systems (e.g. FreeBSD, OpenBSD and Mac OS X) there is no difference //!     between the two sources. (Also note that, on some systems e.g. FreeBSD, both `/dev/random` //!     and `/dev/urandom` may block once if the CSPRNG has not seeded yet.)

Discussion:
This can just be done by attempting the system call and falling back if it fails at runtime.
IIRC, getrandom() is not about speed (I-slow label), but about security from file description exhaustion attacks. It uses the urandom pool. See patch:
I'm aware that it's the same pool. The I-slow label is sensible for an improvement that would reduce the number of system calls and necessary file descriptors.
thanks, now I got it. I'll try to fix it tomorrow if it'll still be open/untouched.
Relevant Go patch:
Change:
target().contains("darwin") } <ins> /// Get the target OS on Apple operating systems. #[must_use] pub fn apple_os() -> &'static str { if target().contains("darwin") { "macos" } else if target().contains("ios") { "ios" } else if target().contains("tvos") { "tvos" } else if target().contains("watchos") { "watchos" } else if target().contains("visionos") { "visionos" } else { panic!("not an Apple OS") } } </ins> /// Check if `component` is within `LLVM_COMPONENTS` #[must_use] pub fn llvm_components_contain(component: &str) -> bool {

Discussion:
Repro: The same happens for 1.23-stable.
does this still reproduce?
no repro for .
Change:
} } <ins> fn set_global_section(ccx: &CrateContext, llval: ValueRef, i: &ast::Item) { match attr::first_attr_value_str_by_name(&i.attrs, "link_section") { Some(sect) => { if contains_null(&sect) { ccx.sess().fatal(&format!("Illegal null byte in link_section value: `{}`", &sect)); } unsafe { let buf = CString::new(sect.as_bytes()).unwrap(); llvm::LLVMSetSection(llval, buf.as_ptr()); } }, None => () } } </ins> pub fn trans_item(ccx: &CrateContext, item: &ast::Item) { let _icx = push_ctxt("trans_item");

Discussion:
I compile the code below: using compiler version 1.3.0-nightly ( 2015-07-27) with the following command line: As result I get the following symbol inside a produced rlib:
How'd you verify this? I tried a few variants myself and it looks like it works.
It's broken in Nightly release. Try the following code in after choosing 'Asm' and 'Nightly'.
Aha, looks like I was using an older nightly. cc some informal bisecting turns up as a suspicious commit
Yes, that bisection is correct; PR coming up.
Change:
<ins> // compile-flags: -Zforce-unstable-if-unmarked // aux-build:issue-76736-1.rs // aux-build:issue-76736-2.rs #![crate_name = "foo"] extern crate issue_76736_1; extern crate issue_76736_2; // @has foo/struct.Foo.html // @has - '//*[@class="impl"]//h3[@class="code-header"]' 'MaybeResult' pub struct Foo; // @has foo/struct.Bar.html // @has - '//*[@class="impl"]//h3[@class="code-header"]' 'MaybeResult' pub use issue_76736_2::Bar; </ins>

Discussion:
This is a regression from stable to beta, although this issue will be P-low. The problem is ignored documenting unstable traits for non-local types, fixes some regressions caused by it but the regression in nightly-rustc / compiler docs still opens. For example: Compare and . The doc in 1.46.0 has impl, while on nightly it doesn't have. A way to fix this issue is ignoring this check when the compiling-crates are being passed flag or the crate/module has feature: : Version 1.48.0-nightly ( 2020-09-14)
Hey! I would like to check this out if that is okay
Is this actually a regression?
Dropping regression label. nightly-rustc docs are, well, not really important on non-nightly channels, as they cannot be used by normal consumers.
if you're still interested in working on this we'd love to have the help! If you have trouble, feel free to ask for help in or :)
Thanks! Yes, I am still interested, I have been busy that past few weeks. I will give it a shot this weekend and will reach out if I can't figure it out!
Since zulip is lag in my region at night, I post a respond here. You could use to check for flag passed during compilation.
I think I'll hop onto this if that's OK. I've always wanted to contribute :)
Go for it!
It doesn't seem to be fixed by I'll check the cause
Change:
/// Fetch a DefId from a DefPathHash for a foreign crate. fn def_path_hash_to_def_id(&self, cnum: CrateNum, hash: DefPathHash) -> DefId; <del> fn expn_hash_to_expn_id(&self, cnum: CrateNum, index_guess: u32, hash: ExpnHash) -> ExpnId; </del> <ins> fn expn_hash_to_expn_id( &self, sess: &Session, cnum: CrateNum, index_guess: u32, hash: ExpnHash, ) -> ExpnId; </ins> } pub type CrateStoreDyn = dyn CrateStore + sync::Sync;

Discussion:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --Assuming that you copied to . <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</details
I reproduced this ICE locally. On my end I did it by copying the git checkout of into , because I wasn't able to figure out the right invocation to get it setup with files in (Oh, whoops, I think I was accidentally passing instead of . Of course that wasn't going to work.) well, not 100%, my query stack was a little different: but it seemed like a similar bug, nonetheless.
modify labels: +I-prioritize
Assigning as discussed as part of the and removing .
Now happens for when retrying the repro. (with replaced with as it was changed in rustc) <details<summarybacktrace</summary</detailsIt also gives an unstable fingerprint ICE for when compiling : <details<summarybacktrace</summary</details
The compilation now fails when accessing session in : It looks that decodes which in turn decodes which in turn requires access to a session, but by the time of call, the session in no longer threaded through. cc
I can confirm it works now. Pushed to re-enable incremental compilation for compiling the sysroot.
Change:
let mut lib_args: Vec<_> = all_native_libs .iter() .filter(|l| relevant_lib(sess, l)) <ins> // Deduplication of successive repeated libraries, see rust-lang/rust#113209 // // note: we don't use PartialEq/Eq because NativeLib transitively depends on local // elements like spans, which we don't care about and would make the deduplication impossible .dedup_by(|l1, l2| l1.name == l2.name && l1.kind == l2.kind && l1.verbatim == l2.verbatim) </ins> .filter_map(|lib| { let name = lib.name; match lib.kind {

Discussion:
Hi there, In we use to try and keep our crate's linking instructions up-to-date across supported platforms. We've noticed that in some build configurations the output can change in surprising ways. For instance, using rustc nightly (1.70.0) on Windows (x8664-pc-windows-msvc) in a configuration driven by we see many consecutive duplicate libraries in the output. I understand duplicates are to be expected, and can be meaningful on some platforms, but seeing so many consecutive repeats seems unexpected and unlikely to be meaningful for the build process. Is this perhaps a regression? Or are we making a mistake by relying on the stability of this output across versions/build configurations? This feature is as having a known prefix to "make it easier to fetch the output." leading to the idea that it is expected to be machine consumable. I tried this code: I expected to see this happen: A list produced, with some duplicates (e.g. multiple ), but not many consecutive duplicates. E.g.: Instead, this happened: A list with many consecutive duplicates is produced: </detailsrustc nightly (1.70.0) on Windows (x8664-pc-windows-msvc) in a configuration. rustc nightly (1.70.0) on Windows (x8664-pc-windows-msvc) in a configuration. Project: Build task: <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOT_END --
Hm, I thought we usually removed consecutive duplicates but apparently only in release. A workaround would be to do so manually. For the msvc targets all duplicates can be removed so long as the order is preserved. This isn't true of many other targets though. It would be much better to have a proper fix though.
Thanks for the quick reply :-) That's we landed on for the short term :+1: Great, thanks for clarifying.
WG-prioritization assigning priority (). label -I-prioritize +P-medium
claim
Error: Parsing assign command in failed: ...' assign' ''... Please file an issue on GitHub at if there's a problem with this bot, or reach out on on Zulip.
Thanks !
Change:
tcx.sess.add_lint(lint::builtin::MATCH_OF_UNIT_VARIANT_VIA_PAREN_DOTDOT, pat.id, pat.span, msg); } else { <del> span_err!(tcx.sess, pat.span, E0164, "{}", msg); </del> <ins> struct_span_err!(tcx.sess, pat.span, E0164, "{}", msg) .span_label(pat.span, &format!("not a tuple variant or struct")).emit(); </ins> on_error(); } };

Discussion:
From: src/test/compile- Error E0184 needs a span_label, updating it from: To: Bonus: I'm not sure that note is helping, you can probably just remove it.
On it
- I am releasing this one so someone else can take it, but feel free to come grab another one

From: src/test/compile- Error E0165 needs a span_label, updating it from: To:

From: src/test/compile- Error E0164 needs a span_label, updating it from: To:
Change:
<del> Subproject commit c14e98417feb406df66e821ccd81e1293b4baa6f </del> <ins> Subproject commit 37d6e1886369ea0176356286dc7fbd42ee5aa79c </ins>

Discussion:
<!-- Thank you for filing a regression report! A regression is something that changed between versions of Rust but was not supposed to. Please provide a short summary of the regression, along with any information you feel is relevant to replicate it. --I tried this code: I expected to see this: (which matches ) Instead, this happened: <!-- Provide the most recent version this worked on, for example: It most recently worked on: Rust 1.47 --It most recently worked on: Stable rust 1.52.1 <!-- Provide the version you are using that has the regression. --: <!-- If you know when this regression occurred, please add a line like below, replacing with one of stable, beta, or nightly. modify labels: +regression-from-stable-to-nightly -regression-untriaged --I suspect that this issue was caused by
Let's bisect this: ping cleanup
Hey Cleanup Crew ICE-breakers! This bug has been identified as a good "Cleanup ICE-breaking candidate". In case it's useful, here are some [instructions] for tackling these sorts of bugs. Maybe take a look? Thanks! <3 [instructions]: https://rustc-dev- cc
(I ended up doing the bisection myself, sorry for the ping everyone!) finds a regression in (which does contain rust-lang/stdarch), cc
cc
Assigning priority as discussed in the of the Prioritization Working Group. label -I-prioritize +P-critical +T-compiler
Change:
match traits::orphan_check(self.tcx, def_id) { Ok(()) => { } Err(traits::OrphanCheckErr::NoLocalInputType) => { <del> span_err!( </del> <ins> struct_span_err!( </ins> self.tcx.sess, item.span, E0117, <del> "the impl does not reference any  types defined in this crate;  only traits defined in the current crate can be  implemented for arbitrary types"); </del> <ins> "only traits defined in the current crate can be  implemented for arbitrary types") .span_label(item.span, &format!("impl doesn't use types inside crate")) .note(&format!("the impl does not reference any  types defined in this crate")) .emit(); </ins> return; } Err(traits::OrphanCheckErr::UncoveredTy(param_ty)) => {

Discussion:
From: src/test/compile- Error E0118 needs a spanlabel and a spannote to be a simple note, updating from: To: Bonus: It'd be good if we could underline the type it's complaining about.
In case no one is working with this yet, I can give this a go.

From: src/test/compile- Error E0117 needs a span_label, updated error text, and a note, updating it from: to:
In case no one is working with this yet, I can give this a go.
Change:
} } <del> impl MutVisitor for PlaceholderExpander { </del> <ins> impl<'a, 'b> MutVisitor for PlaceholderExpander<'a, 'b> { </ins> fn flat_map_arm(&mut self, arm: ast::Arm) -> SmallVec<[ast::Arm; 1]> { if arm.is_placeholder { self.remove(arm.id).make_arms()

Discussion:
<!-- Thank you for finding an Internal Compiler Error! If possible, try to provide a minimal verifiable example. You can read "Rust Bug Minimization Patterns" for how to create smaller examples. --Context: "regression" caught by future-proofing CI from After working on reducing the code, I've identified the root cause of the ICE. For context: this patterns stem from "old" Rust code wanting to support proc-macros emitting item definitions in "statement" position for Rust: the trick is to use the to wrap an item-defs-emitting proc-macro call inside a function so that Rust doesn't interpret it as a statement, refusing the then-unstable stmt-emitting proc-macro call (). <!-- If you're using the stable version of the compiler, you should also check if the bug also exists in the beta or nightly versions. --: Bonus: the ICE seems to have been introduced in between today's () and yesterday's nightly. <!-- Include a backtrace in the code block by setting in your environment. E.g. . --<details<summary<strongBacktrace</strong</summary<p</p</detailscc I suspect this is up your alley
searched nightlies: from nightly-2021-08-01 to nightly-2021-08-10 regressed nightly: nightly-2021-08-07 searched commits: from to regressed commit: <details<summarybisected with <a href=''cargo-bisect-rustc</av0.6.0</summaryHost triple: x86_64-unknown-linux-gnu Reproduce with: </details
Assigning priority as discussed in the of the Prioritization Working Group. label -I-prioritize +P-high +A-macros
Thanks nice job
Change:
} else if nanos >= MAX_NANOS_F32 { Err(FromSecsError { kind: FromSecsErrorKind::Overflow }) } else if nanos < 0.0 { <del> Err(FromSecsError { kind: FromSecsErrorKind::Underflow }) </del> <ins> Err(FromSecsError { kind: FromSecsErrorKind::Negative }) </ins> } else { let nanos = nanos as u128; Ok(Duration {

Discussion:
<!-- Thank you for filing a bug report! Please provide a short summary of the bug, along with any information you feel relevant to replicating the bug. If you cannot produce a minimal reproduction case (something that would work in isolation), please provide the steps or even link to a repository that causes the problematic output to occur. --Given the following code: The current output is: <!-- The following is not always necessary. --Ideally the output should look like: while the current error message might still give a hint as to what could be going on, if you have genuinely large numbers passed to the function, you may go in a completely wrong path while debugging (testing the input to be within limits, rather than checking if it is negative or not). <!-- If dramatically different output is caused by small changes, consider also adding them here. Occurs in stable, beta and nightly compiler. <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
claim