jiebi/CodeConvo huggingface dataset:
Change:
error: the `x:` in this pattern is redundant <del> --> $DIR/lint-shorthand-field.rs:12:13 </del> <ins> --> $DIR/lint-shorthand-field.rs:14:13 </ins> | LL |             x: x, <del> |             --^^ |             | |             help: remove this </del> <ins> |             ^^^^ help: use shorthand field pattern: `x` </ins> | note: lint level defined here <del> --> $DIR/lint-shorthand-field.rs:2:9 </del> <ins> --> $DIR/lint-shorthand-field.rs:4:9 </ins> | LL | #![deny(non_shorthand_field_patterns)] |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ error: the `y:` in this pattern is redundant <del> --> $DIR/lint-shorthand-field.rs:13:13 </del> <ins> --> $DIR/lint-shorthand-field.rs:15:13 </ins> | LL |             y: ref y, <del> |             --^^^^^^ |             | |             help: remove this </del> <ins> |             ^^^^^^^^ help: use shorthand field pattern: `ref y` </ins> <del> error: aborting due to 2 previous errors </del> <ins> error: the `x:` in this pattern is redundant --> $DIR/lint-shorthand-field.rs:65:13 | LL |             x: mut x, |             ^^^^^^^^ help: use shorthand field pattern: `mut x` error: the `y:` in this pattern is redundant --> $DIR/lint-shorthand-field.rs:66:13 | LL |             y: ref y, |             ^^^^^^^^ help: use shorthand field pattern: `ref y` error: the `z:` in this pattern is redundant --> $DIR/lint-shorthand-field.rs:67:13 | LL |             z: ref mut z, |             ^^^^^^^^^^^^ help: use shorthand field pattern: `ref mut z` error: aborting due to 5 previous errors </ins>

Discussion:
Code: output: Note that in the attempted fix is incorrect syntax (it ate a colon). Edit: it probably actually isn't. Version info:
thanks for feedback :) it seems a rustfix bug, could you please file a issue there? cc
Will do. Is it intentional that suggests filing a bug in this repo (see the error message), or should that be changed?
This is the correct place to file the issue, it is a bug in . The issue is that the lint is providing a bad suggestion. Either the span needs to encompass the entire binding, or the suggested text needs to be the empty string.
Change:
<del> //@ known-bug: rust-lang/rust#126377 #![feature(effects)] #![feature(generic_const_exprs)] mod assert { use std::mem::{Assume, TransmuteFrom}; pub fn is_transmutable< Src, Dst, const ASSUME_ALIGNMENT: bool, const ASSUME_LIFETIMES: bool, const ASSUME_SAFETY: bool, const ASSUME_VALIDITY: bool, >() where Dst: TransmuteFrom< Src, {  } >, {} } const fn from_options() -> Assume { #[repr(C)] struct Src; #[repr(C)] struct Dst; assert::is_transmutable::<Src, Dst, {0u8}, false, false, false>(); } </del>

Discussion:
<!-- [31mICE[0m: Rustc '' 'thread 'rustc' panicked at 'not implemented: NormalizationFailure(Alias(Projection, AliasTy { args: [T/], defid: DefId(0:12 ~ a[cc78]::Aaa::Y), .. }), Type(Alias(Projection, AliasTy { args: [T/], defid: DefId(0:12 ~ a[cc78]::Aaa::Y), .. })))'', 'thread 'rustc' panicked at 'not implemented: NormalizationFailure(Alias(Projection, AliasTy { args: [T/], defid: DefId(0:12 ~ a[cc78]::Aaa::Y), .. }), Type(Alias(Projection, AliasTy { args: [T/], defid: DefId(0:12 ~ a[cc78]::Aaa::Y), .. })))'' File: --auto-reduced (treereduce-rust): original: Version 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: [checkwellformed] checking that is well-formed [checkmodtypewf] checking that types are well-formed in top-level module --<!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
Regression in nightly-2024-08-22 seems to bisect to
Slightly more reduction:
(Note that this reduction should drop the feature gate, as this ICEs without the feature gate)
claim
Change:
} } <del> build.run(&mut cargo); update_mtime(build, &libstd_stamp(build, &compiler, target)); </del> <ins> run_cargo(build, &mut cargo, &libstd_stamp(build, &compiler, target)); </ins> } /// Link all libstd rlibs/dylibs into the sysroot location.

Discussion:
Rustbuild compiles the compiler in a particular location and is then responsible for copying artifacts over to the actual structure the compiler is expecting (e.g. rustbuild assembles a sysroot). In order to handle stale folders rustbuild , deduplicated by hash. This pretty obviously, though, doesn't work with multiple versions of the same library! We should probably call Cargo with and learn about compiled artifacts, that way we can copy precisely what we need to into the sysroot.
Change:
font-size: 21px; } <ins> h4.method > .out-of-band { font-size: 19px; } </ins> h4 > code, h3 > code, .invisible > code { position: inherit; }

Discussion:
Test case:
Stability is fixed now, just needs links.
Triage: no src link on methods as of today.
We have [src] for impls now. Is that enough?
Did this just land? I can’t find these links in Is it only trait impls on inherent as well? In any case it’s an improvement, but some blocks are very large and source links on individual methods would still be useful in my opinion.
yep, it was merged recently: and works for both kinds of impls. It should be visible in the nightly docs already. There appear to be some problems with linking to impls pulled from to , I planned to investigate if that's fixable later.
I've opened to fix this.
Change:
self.read_or(&mut [Box::new(ipv4_addr), Box::new(ipv6_addr)]) } <del> fn read_socket_addr(&mut self) -> Option<SocketAddr> { </del> <ins> fn read_socket_addr_v4(&mut self) -> Option<SocketAddrV4> { let ip_addr = |p: &mut Parser| p.read_ipv4_addr(); let colon = |p: &mut Parser| p.read_given_char(':'); let port = |p: &mut Parser| { p.read_number(10, 5, 0x10000).map(|n| n as u16) }; self.read_seq_3(ip_addr, colon, port).map(|t| { let (ip, _, port): (Ipv4Addr, char, u16) = t; SocketAddrV4::new(ip, port) }) } fn read_socket_addr_v6(&mut self) -> Option<SocketAddrV6> { </ins> let ip_addr = |p: &mut Parser| { <del> let ipv4_p = |p: &mut Parser| p.read_ip_addr(); let ipv6_p = |p: &mut Parser| { let open_br = |p: &mut Parser| p.read_given_char('['); let ip_addr = |p: &mut Parser| p.read_ipv6_addr(); let clos_br = |p: &mut Parser| p.read_given_char(']'); p.read_seq_3::<char, Ipv6Addr, char, _, _, _>(open_br, ip_addr, clos_br) .map(|t| match t { (_, ip, _) => IpAddr::V6(ip) }) }; p.read_or(&mut [Box::new(ipv4_p), Box::new(ipv6_p)]) </del> <ins> let open_br = |p: &mut Parser| p.read_given_char('['); let ip_addr = |p: &mut Parser| p.read_ipv6_addr(); let clos_br = |p: &mut Parser| p.read_given_char(']'); p.read_seq_3(open_br, ip_addr, clos_br).map(|t| t.1) </ins> }; let colon = |p: &mut Parser| p.read_given_char(':'); <del> let port  = |p: &mut Parser| p.read_number(10, 5, 0x10000).map(|n| n as u16); </del> <ins> let port = |p: &mut Parser| { p.read_number(10, 5, 0x10000).map(|n| n as u16) }; </ins> <del> // host, colon, port </del> self.read_seq_3(ip_addr, colon, port).map(|t| { <del> let (ip, _, port): (IpAddr, char, u16) = t; match ip { IpAddr::V4(ip) => SocketAddr::V4(SocketAddrV4::new(ip, port)), IpAddr::V6(ip) => SocketAddr::V6(SocketAddrV6::new(ip, port, 0, 0)), } </del> <ins> let (ip, _, port): (Ipv6Addr, char, u16) = t; SocketAddrV6::new(ip, port, 0, 0) </ins> }) } <ins> fn read_socket_addr(&mut self) -> Option<SocketAddr> { let v4 = |p: &mut Parser| p.read_socket_addr_v4().map(SocketAddr::V4); let v6 = |p: &mut Parser| p.read_socket_addr_v6().map(SocketAddr::V6); self.read_or(&mut [Box::new(v4), Box::new(v6)]) } </ins> } #[stable(feature = "rust1", since = "1.0.0")]

Discussion:
I need to parse an ipv4 address. I feel like these impls are missing seeing as we have impls of for , and .
Change:
<ins> // check-pass enum _Enum { A(), } type _E = _Enum; const fn _a() -> _Enum { _E::A() } const _A: _Enum = _a(); fn main() {} </ins>

Discussion:
This code causes an ICE starting from Rust 1.41.0 (stable, beta, and nightly): Error: No extra flags were . It also happens in release mode. Rust Playground is at version 1.40.0 and doesn't have the error on stable:
Another version:
cc
Bisected: ,
This should be checking before calling :
triage: P-high. Removing nomination. Assigning to self.
Change:
#!/bin/sh <ins> # ignore-tidy-linelength </ins> set -eu

Discussion:
We currently run Miri on tests a few select targets: However, that's not all tier 1 targets, so e.g. x8664-apple-darwin is not covered, and today's nightly contains a Miri where some APIs are broken on x8664-apple-darwin. It'd be great if we could run (some) Miri tests on all tier 1 targets. Note that Miri tests can be run on any host so this does not require running on more hosts. However we'd probably not want to test all targets on all hosts, so we need some way in to determine which host we are on, and spread the test jobs across the hosts. Also, depending on how tight our time budget is here, we might want to not run all tests -- just running the "pass" tests should generally be sufficient and can save a bunch of time. Cc -- in particular, (a) how can I check for the host in , and (b) how tight is our time budget for the "tools" builders?
Change:
<ins> error[E0275]: overflow evaluating the requirement `P: Sized` --> $DIR/issue-82830.rs:7:8 | LL |     t: MaybeBox<P>, |        ^^^^^^^^^^^ | note: required because of the requirements on the impl of `A<P, Box<P>>` for `P` --> $DIR/issue-82830.rs:10:12 | LL | impl<Y, N> A<Y, N> for P { |            ^^^^^^^     ^ error: aborting due to previous error For more information about this error, try `rustc --explain E0275`. </ins>

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. --<!-- 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</detailsThe bug happens in here: It happens due to an assertion that the error is a which it isn't i guess. I think it's related to a type being contained within itself, but not really.
This ICEs since 1.49.0. In 1.48.0, gives the following errors:
bisection result searched nightlies: from nightly-2020-08-01 to nightly-2021-03-10 regressed nightly: nightly-2020-10-07 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 as discussed as part of the and removing . label -I-prioritize +P-medium
Slightly simplified:
No longer ICEs since
Change:
<ins> goto: "file://" + |DOC_PATH| + "/test_docs/struct.StructWithPublicUndocumentedFields.html" // Both fields must be on their own line. In other words, they have display: block. store-property: (first_top, "//*[@id='structfield.first']", "offsetTop") assert-property-false: ("//*[@id='structfield.second']", { "offsetTop": |first_top| }) </ins>

Discussion:
! label A-rustdoc-ui T-rustdoc C-bug regression-from-stable-to-nightly
Regressed in . Out of these it's probably cc
Change:
LL + #![feature(const_trait_impl)] | <del> error[E0515]: cannot return reference to function parameter `x` --> $DIR/typeck_type_placeholder_item.rs:50:5 | LL |     &x |     ^^ returns a reference to data owned by the current function error: aborting due to 75 previous errors </del> <ins> error: aborting due to 74 previous errors </ins> <del> Some errors have detailed explanations: E0015, E0046, E0121, E0282, E0403, E0515. </del> <ins> Some errors have detailed explanations: E0015, E0046, E0121, E0282, E0403. </ins> For more information about an error, try `rustc --explain E0015`.

Discussion:
The code Emits this diagnostic, which is wrong in this case. It should say cc: <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --<!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOT_END --
Cannot reproduce: the code snippet as given produces on stable 1.78.0
Did you mean to write this code snippet instead?
Ooops yes :sweat_smile:, edited
claim
Change:
./x.py fmt --check", ); } <del> "test" => { </del> <ins> "test" | "t" => { </ins> subcommand_help.push_str( "n Arguments:

Discussion:
currently supports , and a few others even though not so discoverable (). It would be good to let supports the aliases supported by , such as , and such. <!-- TRIAGEBOTSTART --<!-- TRIAGEBOTASSIGNSTART --This issue has been assigned to via . <!-- TRIAGEBOTASSIGNDATASTARTTRIAGEBOTASSIGNDATAEND --<!-- TRIAGEBOTASSIGNEND --<!-- TRIAGEBOTEND --
claim
Change:
<del> Subproject commit cbedd97b3a58023eff365a2fa74700d06115144a </del> <ins> Subproject commit e8d5a9e95c145a3a9be89c582d8a6f88d4ea7037 </ins>

Discussion:
Hello, this is your friendly neighborhood mergebot. After merging PR rust-lang/rust, I observed that the tool clippy-driver no longer builds. A follow-up PR to the repository is needed to fix the fallout. cc do you think you would have time to do the follow-up work? If so, that would be great! cc the PR reviewer, and nominating for compiler team prioritization.
Change:
} #[test] <ins> fn align_offset_issue_103361() { #[cfg(target_pointer_width = "64")] const SIZE: usize = 1 << 47; #[cfg(target_pointer_width = "32")] const SIZE: usize = 1 << 30; #[cfg(target_pointer_width = "16")] const SIZE: usize = 1 << 13; struct HugeSize([u8; SIZE - 1]); let _ = (SIZE as *const HugeSize).align_offset(SIZE); } #[test] </ins> fn offset_from() { let mut a = [0; 5]; let ptr1: *mut i32 = &mut a[1];

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. --I tried this code: I expected to see this happen: The program terminates. Instead, this happened: The program loops indefinitely. I encountered this while working on <!-- 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. --:
Hangs here: label I-hang
CC
Thanks for the report. Priority wise, this seems like it isn’t going to be super high priority to resolve, given that 1<<47 is 128TiB. 128TiB, unfortunately, is half of the maximum supported address space on many modern x8664 and aarch64 deployments, so it is conceivable that this could be actually hit. Still would be nice to actually fix it. As for the strategies to fix this, there are a couple of approaches to consider: could store the into a u128 (2 usize on any supported platform today.) This is not super future-proof, and unfortunately probably somewhat more costly in the non-const-evaluated case. could use instead of . When overflows on the last iteration, it will become the maximum value that fits in and the termination condition will be hit. Not super clear what codegen quality implications are for using saturatingmul; a widening/checked multiplication and additionally compare the high bits for in the terminating condition. This is an alteration of 1. I suspect this is going to produce the best code, but that remains to be seen.
Would it work to change the termination condition from to ? Where means it wrapped, so the logical value is out of the type's range, and thus bigger than .
Or weirder: store instead of , so the comparison can be done using and the squaring operation can be replaced with a doubling (bit shift).
Change:
// leading to an ambiguous result. So report this as an // overflow bug, since I believe this is the only case // where ambiguity can result. <del> bug!( "Encountered ambiguity selecting `{:?}` during codegen,  presuming due to overflow", trait_ref ) </del> <ins> infcx.tcx.sess.delay_span_bug( rustc_span::DUMMY_SP, &format!( "encountered ambiguity selecting `{:?}` during codegen, presuming due to  overflow or prior type error", trait_ref ), ); return None; </ins> } Err(e) => { bug!("Encountered error `{:?}` selecting `{:?}` during codegen", e, trait_ref)

Discussion:
I'm seeing an internal compiler error on the following input (found by ): The error happens on stable, beta, and nightly.
This regressed in .
cc
triage: already has fix in pipeline. P-high. removing nomination label.
Change:
} } <del> const PATH_REMAP: &[(&str, &str)] = &[("rust-analyzer-proc-macro-srv", "proc-macro-srv-cli")]; fn remap_paths(paths: &mut [&Path]) { for path in paths.iter_mut() { </del> <ins> const PATH_REMAP: &[(&str, &[&str])] = &[ // config.toml uses `rust-analyzer-proc-macro-srv`, but the // actual path is `proc-macro-srv-cli` ("rust-analyzer-proc-macro-srv", &["proc-macro-srv-cli"]), // Make `x test tests` function the same as `x t tests/*` ( "tests", &[ "tests/assembly", "tests/codegen", "tests/codegen-units", "tests/coverage", "tests/coverage-run-rustdoc", "tests/debuginfo", "tests/incremental", "tests/mir-opt", "tests/pretty", "tests/run-make", "tests/run-make-fulldeps", "tests/run-pass-valgrind", "tests/rustdoc", "tests/rustdoc-gui", "tests/rustdoc-js", "tests/rustdoc-js-std", "tests/rustdoc-json", "tests/rustdoc-ui", "tests/ui", "tests/ui-fulldeps", ], ), ]; fn remap_paths(paths: &mut Vec<&Path>) { let mut remove = vec![]; let mut add = vec![]; for (i, path) in paths .iter() .enumerate() .filter_map(|(i, path)| if let Some(s) = path.to_str() { Some((i, s)) } else { None }) { </ins> for &(search, replace) in PATH_REMAP { <del> if path.to_str() == Some(search) { *path = Path::new(replace) </del> <ins> // Remove leading and trailing slashes so `tests/` and `tests` are equivalent if path.trim_matches(std::path::is_separator) == search { remove.push(i); add.extend(replace.into_iter().map(Path::new)); break; </ins> } } } <ins> remove.sort(); remove.dedup(); for idx in remove.into_iter().rev() { paths.remove(idx); } paths.append(&mut add); </ins> } impl StepDescription {

Discussion:
If you try to do , it doesn't work: Same goes for and . label A-rustbuild
Why did you expect these to work? The following should work: , . I think currently this is by design. Or is this a feature request to make basically ?
Yeah it's a feature request. I filed it upon invitation of after he asked about pain points of bootstrap : https://rust-
Yeah this exactly.
Update: still doesn't work today (now with the tests/ dir).
Change:
}; if should_deallocate { <del> let not_null = IsNotNull(bcx, dataptr); with_cond(bcx, not_null, |bcx| { let llty = type_of::type_of(ccx, unit_ty); let llsize = machine::llsize_of(ccx, llty); let llalign = C_uint(ccx, machine::llalign_of_min(ccx, llty) as uint); let size = Mul(bcx, llsize, get_len(bcx, vptr)); glue::trans_exchange_free_dyn(bcx, dataptr, size, llalign) }) </del> <ins> let llty = type_of::type_of(ccx, unit_ty); let unit_size = llsize_of_alloc(ccx, llty); if unit_size != 0 { let len = get_len(bcx, vptr); let not_empty = ICmp(bcx, llvm::IntNE, len, C_uint(ccx, 0)); with_cond(bcx, not_empty, |bcx| { let llalign = C_uint(ccx, machine::llalign_of_min(ccx, llty) as uint); let size = Mul(bcx, C_uint(ccx, unit_size as uint), len); glue::trans_exchange_free_dyn(bcx, dataptr, size, llalign) }) } else { bcx } </ins> } else { bcx }

Discussion:
I this to get DST landed. For types I use a fat pointer. If the vector is empy I use null for the pointer, so when this deallocates via drop glue jemalloc segfaults. It should be fairly easy to do a zero sized allocation or something and use that value and then we can remove the null check. That also allows us to use the Option to non-null pointer optimisation. For now I just want to get this branch landed though. cc
FWIW, as the sentinel value for this sort of situation (to ensure that still works, since that uses the "non-null" pointer as the discriminant).
It seems that landed the non-null pointer optimization for slices so this shouldn't be required anymore. Can it be closed?
This ended up landing as part of the initial implementation, but I don't think it is actually accomplishing anything.
Change:
<ins> // Copyright 2017 The Rust Project Developers. See the COPYRIGHT // file at the top-level directory of this distribution and at // http://rust-lang.org/COPYRIGHT. // // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your // option. This file may not be copied, modified, or distributed // except according to those terms. enum DoubleOption<T> { FirstSome(T), AlternativeSome(T), Nothing, } fn this_function_expects_a_double_option<T>(d: DoubleOption<T>) {} fn main() { let n: usize = 42; this_function_expects_a_double_option(n); } </ins>

Discussion:
produces I think the first item in this list should be
More generally, if the expected type is an enum, and the found type is T, then you should search the enum's variants and check them whether is the sole argument of one of them. If yes, suggest the variant constructor.
I agree we should list variants like that, but I also think the functions suggestions are sort of silly; see
Change:
<ins> // edition:2021 // run-rustfix #![allow(unused)] use std::future::Future; async fn foo() -> Result<(), i32> { func(async { Ok::<_, i32>(()) })?; //~^ ERROR the `?` operator can only be applied to values that implement `Try` Ok(()) } async fn func<T>(fut: impl Future<Output = T>) -> T { fut.await } fn main() {} </ins>

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: <!-- If the problem is not self-explanatory, please provide a rationale for the change. --<!-- If dramatically different output is caused by small changes, consider also adding them here. 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. The output might also be different depending on the Edition. --
Huh, looks like this is a case where doesn't kick in for some reason.
Ah, it's that the return type of an async function like this has . I don't know enough about rustc's typechecking to know whether this can be resolved haha.
It doesn't seem like the problem that caused is a thing anymore? I can remove the condition and it doesn't ICE on the example given in that issue.
do you know if stuff has changed such that is no longer necessary?
I actually have a PR almost up that does just exactly that, though if you want to put one up instead then feel free.
I'm pretty sure fixes this underlying issue. This method could use some additional cleanup as well.