Remove support for `-Zprofile` (gcov-style coverage instrumentation) #131829

Zalathar · 2024-10-17T10:43:49Z

Tracking issue: #42524

This PR removes the unstable -Zprofile flag, which enables ”gcov-style” coverage instrumentation, along with its associated -Zprofile-emit configuration flag.

(The profile flag predates and is almost entirely separate from the stable -Cinstrument-coverage flag.)

Notably, the -Zprofile flag:

Is largely untested in-tree, having only one run-make test that does not check whether its output is correct or useful.
Has no known maintainer.
Has seen no push towards stabilization.
Has at least one severe regression reported in 2022 that apparently remains unaddressed.
- Regression in code coverage (-Zprofile) at some point after nightly-2021-11-11 #100125
Is confusingly named, since it appears to be more about coverage than performance profiling, and has nothing to do with PGO.
Is fundamentally limited by relying on counters auto-inserted by LLVM, with no knowledge of Rust beyond debuginfo.

rustbot · 2024-10-17T10:43:57Z

r? @chenyukang

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They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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rustbot · 2024-10-17T10:43:59Z

This PR modifies tests/run-make/. If this PR is trying to port a Makefile
run-make test to use rmake.rs, please update the
run-make port tracking issue
so we can track our progress. You can either modify the tracking issue
directly, or you can comment on the tracking issue and link this PR.

cc @jieyouxu

Zalathar · 2024-10-17T11:29:00Z

MCP: rust-lang/compiler-team#798

Zalathar · 2024-10-30T22:17:24Z

Rebased; MCP accepted.

@rustbot ready

chenyukang · 2024-11-01T07:07:27Z

@bors r+ rollup

bors · 2024-11-01T07:07:30Z

📌 Commit ce3e14a has been approved by chenyukang

It is now in the queue for this repository.

jieyouxu · 2024-11-01T07:10:11Z

Technically this is unstable flag, but should this get compat relnotes still?

…ukang Remove support for `-Zprofile` (gcov-style coverage instrumentation) Tracking issue: rust-lang#42524 MCP: rust-lang/compiler-team#798 --- This PR removes the unstable `-Zprofile` flag, which enables ”gcov-style” coverage instrumentation, along with its associated `-Zprofile-emit` configuration flag. (The profile flag predates and is almost entirely separate from the stable `-Cinstrument-coverage` flag.) Notably, the `-Zprofile` flag: - Is largely untested in-tree, having only one run-make test that does not check whether its output is correct or useful. - Has no known maintainer. - Has seen no push towards stabilization. - Has at least one severe regression reported in 2022 that apparently remains unaddressed. - rust-lang#100125 - Is confusingly named, since it appears to be more about coverage than performance profiling, and has nothing to do with PGO. - Is fundamentally limited by relying on counters auto-inserted by LLVM, with no knowledge of Rust beyond debuginfo.

Zalathar · 2024-11-01T08:28:54Z

Given the flag’s age and former importance (?), a mention in relnotes is probably warranted. I’ll try to come up with a suggested wording.

jieyouxu · 2024-11-01T08:29:44Z

@rustbot label +relnotes

…iaskrgr Rollup of 6 pull requests Successful merges: - rust-lang#131829 (Remove support for `-Zprofile` (gcov-style coverage instrumentation)) - rust-lang#132341 (Reject raw lifetime followed by `'`, like regular lifetimes do) - rust-lang#132369 (style-guide: Only use the new binop heuristic for assignments) - rust-lang#132383 (Implement suggestion for never type fallback lints) - rust-lang#132437 (coverage: Regression test for inlining into an uninstrumented crate) - rust-lang#132438 (Remove unncessary option for default rust-analyzer setting) r? `@ghost` `@rustbot` modify labels: rollup

…ukang Remove support for `-Zprofile` (gcov-style coverage instrumentation) Tracking issue: rust-lang#42524 MCP: rust-lang/compiler-team#798 --- This PR removes the unstable `-Zprofile` flag, which enables ”gcov-style” coverage instrumentation, along with its associated `-Zprofile-emit` configuration flag. (The profile flag predates and is almost entirely separate from the stable `-Cinstrument-coverage` flag.) Notably, the `-Zprofile` flag: - Is largely untested in-tree, having only one run-make test that does not check whether its output is correct or useful. - Has no known maintainer. - Has seen no push towards stabilization. - Has at least one severe regression reported in 2022 that apparently remains unaddressed. - rust-lang#100125 - Is confusingly named, since it appears to be more about coverage than performance profiling, and has nothing to do with PGO. - Is fundamentally limited by relying on counters auto-inserted by LLVM, with no knowledge of Rust beyond debuginfo.

Rollup of 13 pull requests Successful merges: - rust-lang#131829 (Remove support for `-Zprofile` (gcov-style coverage instrumentation)) - rust-lang#132369 (style-guide: Only use the new binop heuristic for assignments) - rust-lang#132383 (Implement suggestion for never type fallback lints) - rust-lang#132437 (coverage: Regression test for inlining into an uninstrumented crate) - rust-lang#132438 (Remove unncessary option for default rust-analyzer setting) - rust-lang#132439 (Add `f16` and `f128` to `invalid_nan_comparison`) - rust-lang#132445 (Cleanup attributes around unchecked shifts and unchecked negation in const) - rust-lang#132448 (Add missing backtick) - rust-lang#132450 (Show actual MIR when MIR building forgot to terminate block) - rust-lang#132451 (remove some unnecessary rustc_allow_const_fn_unstable) - rust-lang#132455 (make const_alloc_layout feature gate only about functions that are already stable) - rust-lang#132456 (Move remaining inline assembly test files into asm directory) - rust-lang#132459 (feat(byte_sub_ptr): unstably add ptr::byte_sub_ptr) r? `@ghost` `@rustbot` modify labels: rollup

Support for -Zprofile has been removed: rust-lang/rust#131829

and use cargo-llvm-cov instead of grcov. Support for -Zprofile has been removed from Rust nightly: rust-lang/rust#131829

Support for -Zprofile has been removed in rust-lang/rust#131829

sylvestre · 2024-11-16T13:50:06Z

@Zalathar While not perfect, -Zprofile had advantages over the other option.
Since this change, we haven't been able to get coverage working on again on a medium size rust project:
uutils/coreutils#6857
(the size of the profraw files is way too large for Github).

Am I missing something? If not, would it be possible to reconsider this removal ? Thanks :)

marco-c · 2024-11-16T15:53:59Z

Agreed with @sylvestre, there are many users, and some large projects might have difficulties switching to source-based coverage as it can be more resource intensive.
If there are no considerable benefits stemming from its removal, it would be ideal to keep it even with its limitations.

workingjubilee · 2024-11-16T23:38:35Z

My understanding is that the "limitations" are coverage info that can be incorrect by a factor greater than 10, right? It's based on debuginfo, but either not in a way that seems to be very accurate for Rust code, or we are emitting debuginfo in a way that is not useful for it, right?

We used to rely on `-Zprofile`, but it was recently removed from Rust Nightly: rust-lang/rust#131829 This commit switches to a stable alternative; cf. mozilla/grcov#1240 This change is accompanied by a change in the build environment: instead of using Clang 18 with Rust Nightly, we now use Clang 18 with Rust 1.81. That's the last Rust version based on LLVM 18. Previously we tried to match LLVM versions between C++ and Rust to avoid weird coverage results. Now, it's *required* to match them, otherwise no coverage is gathered at all. Fixes #2912.

Zalathar · 2024-11-19T12:11:49Z

If there are no considerable benefits stemming from its removal, it would be ideal to keep it even with its limitations.

Unfortunately, the existing code was causing real maintenance problems in other parts of the compiler, which was one of the reasons for removing it.

jieyouxu · 2024-11-19T12:36:04Z

To add, removal of -Zprofile is without prejudice against re-adding the gcov-based coverage instrumentation back under a new unstable feature, provided that:

(1) It uses a more accurate name (one that's not confusing like -Zprofile), and
(2) There are suitable maintainers who sign up to maintain it, and
(3) Passes the review bar for a new unstable feature. E.g. does not cause unwanted maintenance burden on other parts of the compiler (i.e. adding more hacks back)

i.e.

But if somebody out there wants to take the initiative and re-add the feature in a form that would pass the review bar for a new unstable feature, that should be fine.

cc https://rust-lang.zulipchat.com/#narrow/channel/233931-t-compiler.2Fmajor-changes/topic/Remove.20unstable.20.60-Zprofile.60.20.28gcov-style.20c.E2.80.A6.20compiler-team.23798/near/482809968

workingjubilee · 2024-11-19T20:15:08Z

It would also be nice if someone reported to LLVM about the storage usage being excessive. I feel it is doubtful they have done any optimizations on the profdata format's space usage.

The rustc's -Zprofile compiler flag was removed on nightly [1], which means gcov-style coverage instrumentation is no longer possible. [1] rust-lang/rust#131829 Signed-off-by: Renato Westphal <renato@opensourcerouting.org>

rust-lang/rust#131829

This MR contains the following updates: | Package | Update | Change | |---|---|---| | [rust](https://github.com/rust-lang/rust) | minor | `1.83.0` -> `1.84.0` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>rust-lang/rust (rust)</summary> ### [`v1.84.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1840-2025-01-09) [Compare Source](rust-lang/rust@1.83.0...1.84.0) \========================== <a id=" Language"></a> ## Language - [Allow `#[deny]` inside `#[forbid]` as a no-op](rust-lang/rust#121560) - [Show a warning when `-Ctarget-feature` is used to toggle features that can lead to unsoundness due to ABI mismatches](rust-lang/rust#129884) - [Use the next-generation trait solver in coherence](rust-lang/rust#130654) - [Allow coercions to drop the principal of trait objects](rust-lang/rust#131857) - [Support `/` as the path separator for `include!()` in all cases on Windows](rust-lang/rust#125205) - [Taking a raw ref (`raw (const|mut)`) of a deref of a pointer (`*ptr`) is now safe](rust-lang/rust#129248) - [Stabilize s390x inline assembly](rust-lang/rust#131258) - [Stabilize Arm64EC inline assembly](rust-lang/rust#131781) - [Lint against creating pointers to immediately dropped temporaries](rust-lang/rust#128985) - [Execute drop glue when unwinding in an `extern "C"` function](rust-lang/rust#129582) <a id="1.84.0-Compiler"></a> ## Compiler - [Add `--print host-tuple` flag to print the host target tuple and affirm the "target tuple" terminology over "target triple"](rust-lang/rust#125579) - [Declaring functions with a calling convention not supported on the current target now triggers a hard error](rust-lang/rust#129935) - [Set up indirect access to external data for `loongarch64-unknown-linux-{musl,ohos}`](rust-lang/rust#131583) - [Enable XRay instrumentation for LoongArch Linux targets](rust-lang/rust#131818) - [Extend the `unexpected_cfgs` lint to also warn in external macros](rust-lang/rust#132577) - [Stabilize WebAssembly `multivalue`, `reference-types`, and `tail-call` target features](rust-lang/rust#131080) - [Added Tier 2 support for the `wasm32v1-none` target](rust-lang/rust#131487) <a id="1.84.0-Libraries"></a> ## Libraries - [Implement `From<&mut {slice}>` for `Box/Rc/Arc<{slice}>`](rust-lang/rust#129329) - [Move `<float>::copysign`, `<float>::abs`, `<float>::signum` to `core`](rust-lang/rust#131304) - [Add `LowerExp` and `UpperExp` implementations to `NonZero`](rust-lang/rust#131377) - [Implement `FromStr` for `CString` and `TryFrom<CString>` for `String`](rust-lang/rust#130608) - [`std::os::darwin` has been made public](rust-lang/rust#123723) <a id="1.84.0-Stabilized-APIs"></a> ## Stabilized APIs - [`Ipv6Addr::is_unique_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unique_local) - [`Ipv6Addr::is_unicast_link_local`](https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unicast_link_local) - [`core::ptr::with_exposed_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance.html) - [`core::ptr::with_exposed_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance_mut.html) - [`<ptr>::addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.addr) - [`<ptr>::expose_provenance`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.expose_provenance) - [`<ptr>::with_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.with_addr) - [`<ptr>::map_addr`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.map_addr) - [`<int>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.isqrt) - [`<int>::checked_isqrt`](https://doc.rust-lang.org/stable/core/primitive.i32.html#method.checked_isqrt) - [`<uint>::isqrt`](https://doc.rust-lang.org/stable/core/primitive.u32.html#method.isqrt) - [`NonZero::isqrt`](https://doc.rust-lang.org/stable/core/num/struct.NonZero.html#impl-NonZero%3Cu128%3E/method.isqrt) - [`core::ptr::without_provenance`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance.html) - [`core::ptr::without_provenance_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance_mut.html) - [`core::ptr::dangling`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling.html) - [`core::ptr::dangling_mut`](https://doc.rust-lang.org/stable/core/ptr/fn.dangling_mut.html) - [`Pin::as_deref_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.as_deref_mut) These APIs are now stable in const contexts - [`AtomicBool::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicBool.html#method.from_ptr) - [`AtomicPtr::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicPtr.html#method.from_ptr) - [`AtomicU8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU8.html#method.from_ptr) - [`AtomicU16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU16.html#method.from_ptr) - [`AtomicU32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU32.html#method.from_ptr) - [`AtomicU64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU64.html#method.from_ptr) - [`AtomicUsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.from_ptr) - [`AtomicI8::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI8.html#method.from_ptr) - [`AtomicI16::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI16.html#method.from_ptr) - [`AtomicI32::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI32.html#method.from_ptr) - [`AtomicI64::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI64.html#method.from_ptr) - [`AtomicIsize::from_ptr`](https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicIsize.html#method.from_ptr) - [`<ptr>::is_null`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_null-1) - [`<ptr>::as_ref`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_ref-1) - [`<ptr>::as_mut`](https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_mut) - [`Pin::new`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new) - [`Pin::new_unchecked`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new_unchecked) - [`Pin::get_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_ref) - [`Pin::into_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.into_ref) - [`Pin::get_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_mut) - [`Pin::get_unchecked_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_unchecked_mut) - [`Pin::static_ref`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_ref) - [`Pin::static_mut`](https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_mut) <a id="1.84.0-Cargo"></a> ## Cargo - [Stabilize MSRV-aware resolver config](rust-lang/cargo#14639) - [Stabilize resolver v3](rust-lang/cargo#14754) <a id="1.84-Rustdoc"></a> ## Rustdoc - [rustdoc-search: improve type-driven search](rust-lang/rust#127589) <a id="1.84.0-Compatibility-Notes"></a> ## Compatibility Notes - [Enable by default the `LSX` target feature for LoongArch Linux targets](rust-lang/rust#132140) - [The unstable `-Zprofile` flag (“gcov-style” coverage instrumentation) has been removed.](rust-lang/rust#131829) This does not affect the stable flags for coverage instrumentation (`-Cinstrument-coverage`) and profile-guided optimization (`-Cprofile-generate`, `-Cprofile-use`), which are unrelated and remain available. - Support for the target named `wasm32-wasi` has been removed as the target is now named `wasm32-wasip1`. This completes the [transition](rust-lang/compiler-team#607) [plan](rust-lang/compiler-team#695) for this target following [the introduction of `wasm32-wasip1`](rust-lang/rust#120468) in Rust 1.78. Compiler warnings on [use of `wasm32-wasi`](rust-lang/rust#126662) introduced in Rust 1.81 are now gone as well as the target is removed. - [The syntax `&pin (mut|const) T` is now parsed as a type which in theory could affect macro expansion results in some edge cases](rust-lang/rust#130635 (comment)) - [Legacy syntax for calling `std::arch` functions is no longer permitted to declare items or bodies (such as closures, inline consts, or async blocks).](rust-lang/rust#130443 (comment)) - [Declaring functions with a calling convention not supported on the current target now triggers a hard error](rust-lang/rust#129935) - [The next-generation trait solver is now enabled for coherence, fixing multiple soundness issues](rust-lang/rust#130654) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

According to rust-lang/rust#131829 -Zprofile is removed.

Pkgsrc changes: * Adapt patches, one of the patched files were restructured upstream. * Checksum changes. Upstream changes: Version 1.84.1 (2025-01-30) ========================== - [Fix ICE 132920 in duplicate-crate diagnostics.] (rust-lang/rust#133304) - [Fix errors for overlapping impls in incremental rebuilds.] (rust-lang/rust#133828) - [Fix slow compilation related to the next-generation trait solver.] (rust-lang/rust#135618) - [Fix debuginfo when LLVM's location discriminator value limit is exceeded.] (rust-lang/rust#135643) - Fixes for building Rust from source: - [Only try to distribute `llvm-objcopy` if llvm tools are enabled.] (rust-lang/rust#134240) - [Add Profile Override for Non-Git Sources.] (rust-lang/rust#135433) - [Resolve symlinks of LLVM tool binaries before copying them.] (rust-lang/rust#135585) - [Make it possible to use ci-rustc on tarball sources.] (rust-lang/rust#135722) Version 1.84.0 (2025-01-09) ========================== Language -------- - [Allow `#[deny]` inside `#[forbid]` as a no-op] (rust-lang/rust#121560) - [Show a warning when `-Ctarget-feature` is used to toggle features that can lead to unsoundness due to ABI mismatches] (rust-lang/rust#129884) - [Use the next-generation trait solver in coherence] (rust-lang/rust#130654) - [Allow coercions to drop the principal of trait objects] (rust-lang/rust#131857) - [Support `/` as the path separator for `include!()` in all cases on Windows] (rust-lang/rust#125205) - [Taking a raw ref (`raw (const|mut)`) of a deref of a pointer (`*ptr`) is now safe] (rust-lang/rust#129248) - [Stabilize s390x inline assembly] (rust-lang/rust#131258) - [Stabilize Arm64EC inline assembly] (rust-lang/rust#131781) - [Lint against creating pointers to immediately dropped temporaries] (rust-lang/rust#128985) - [Execute drop glue when unwinding in an `extern "C"` function] (rust-lang/rust#129582) Compiler -------- - [Add `--print host-tuple` flag to print the host target tuple and affirm the "target tuple" terminology over "target triple"] (rust-lang/rust#125579) - [Declaring functions with a calling convention not supported on the current target now triggers a hard error] (rust-lang/rust#129935) - [Set up indirect access to external data for `loongarch64-unknown-linux-{musl,ohos}`] (rust-lang/rust#131583) - [Enable XRay instrumentation for LoongArch Linux targets] (rust-lang/rust#131818) - [Extend the `unexpected_cfgs` lint to also warn in external macros] (rust-lang/rust#132577) - [Stabilize WebAssembly `multivalue`, `reference-types`, and `tail-call` target features] (rust-lang/rust#131080) - [Added Tier 2 support for the `wasm32v1-none` target] (rust-lang/rust#131487) Libraries --------- - [Implement `From<&mut {slice}>` for `Box/Rc/Arc<{slice}>`] (rust-lang/rust#129329) - [Move `<float>::copysign`, `<float>::abs`, `<float>::signum` to `core`] (rust-lang/rust#131304) - [Add `LowerExp` and `UpperExp` implementations to `NonZero`] (rust-lang/rust#131377) - [Implement `FromStr` for `CString` and `TryFrom<CString>` for `String`] (rust-lang/rust#130608) - [`std::os::darwin` has been made public] (rust-lang/rust#130635) Stabilized APIs --------------- - [`Ipv6Addr::is_unique_local`] (https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unique_local) - [`Ipv6Addr::is_unicast_link_local`] (https://doc.rust-lang.org/stable/core/net/struct.Ipv6Addr.html#method.is_unicast_link_local) - [`core::ptr::with_exposed_provenance`] (https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance.html) - [`core::ptr::with_exposed_provenance_mut`] (https://doc.rust-lang.org/stable/core/ptr/fn.with_exposed_provenance_mut.html) - [`<ptr>::addr`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.addr) - [`<ptr>::expose_provenance`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.expose_provenance) - [`<ptr>::with_addr`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.with_addr) - [`<ptr>::map_addr`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.map_addr) - [`<int>::isqrt`] (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.isqrt) - [`<int>::checked_isqrt`] (https://doc.rust-lang.org/stable/core/primitive.i32.html#method.checked_isqrt) - [`<uint>::isqrt`] (https://doc.rust-lang.org/stable/core/primitive.u32.html#method.isqrt) - [`NonZero::isqrt`] (https://doc.rust-lang.org/stable/core/num/struct.NonZero.html#impl-NonZero%3Cu128%3E/method.isqrt) - [`core::ptr::without_provenance`] (https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance.html) - [`core::ptr::without_provenance_mut`] (https://doc.rust-lang.org/stable/core/ptr/fn.without_provenance_mut.html) - [`core::ptr::dangling`] (https://doc.rust-lang.org/stable/core/ptr/fn.dangling.html) - [`core::ptr::dangling_mut`] (https://doc.rust-lang.org/stable/core/ptr/fn.dangling_mut.html) These APIs are now stable in const contexts - [`AtomicBool::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicBool.html#method.from_ptr) - [`AtomicPtr::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicPtr.html#method.from_ptr) - [`AtomicU8::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU8.html#method.from_ptr) - [`AtomicU16::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU16.html#method.from_ptr) - [`AtomicU32::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU32.html#method.from_ptr) - [`AtomicU64::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicU64.html#method.from_ptr) - [`AtomicUsize::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicUsize.html#method.from_ptr) - [`AtomicI8::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI8.html#method.from_ptr) - [`AtomicI16::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI16.html#method.from_ptr) - [`AtomicI32::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI32.html#method.from_ptr) - [`AtomicI64::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicI64.html#method.from_ptr) - [`AtomicIsize::from_ptr`] (https://doc.rust-lang.org/stable/core/sync/atomic/struct.AtomicIsize.html#method.from_ptr) - [`<ptr>::is_null`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.is_null-1) - [`<ptr>::as_ref`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_ref-1) - [`<ptr>::as_mut`] (https://doc.rust-lang.org/stable/core/primitive.pointer.html#method.as_mut) - [`Pin::new`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new) - [`Pin::new_unchecked`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.new_unchecked) - [`Pin::get_ref`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_ref) - [`Pin::into_ref`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.into_ref) - [`Pin::get_mut`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_mut) - [`Pin::get_unchecked_mut`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.get_unchecked_mut) - [`Pin::static_ref`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_ref) - [`Pin::static_mut`] (https://doc.rust-lang.org/stable/core/pin/struct.Pin.html#method.static_mut) Cargo ----- - [Stabilize MSRV-aware resolver config] (rust-lang/cargo#14639) - [Stabilize resolver v3] (rust-lang/cargo#14754) Rustdoc ------- - [rustdoc-search: improve type-driven search] (rust-lang/rust#127589) Compatibility Notes ------------------- - [Enable by default the `LSX` target feature for LoongArch Linux targets] (rust-lang/rust#132140) - [The unstable `-Zprofile` flag ("gcov-style" coverage instrumentation) has been removed.](rust-lang/rust#131829) This does not affect the stable flags for coverage instrumentation (`-Cinstrument-coverage`) and profile-guided optimization (`-Cprofile-generate`, `-Cprofile-use`), which are unrelated and remain available. - Support for the target named `wasm32-wasi` has been removed as the target is now named `wasm32-wasip1`. This completes the [transition] (rust-lang/compiler-team#607) [plan](rust-lang/compiler-team#695) for this target following [the introduction of `wasm32-wasip1`] (rust-lang/rust#120468) in Rust 1.78. Compiler warnings on [use of `wasm32-wasi`] (rust-lang/rust#126662) introduced in Rust 1.81 are now gone as well as the target is removed. - [The syntax `&pin (mut|const) T` is now parsed as a type which in theory could affect macro expansion results in some edge cases] (rust-lang/rust#130635 (comment)) - [Legacy syntax for calling `std::arch` functions is no longer permitted to declare items or bodies (such as closures, inline consts, or async blocks).] (rust-lang/rust#130443 (comment)) - The `wasm32-unknown-emscripten` target's binary release of the standard library is now [built with the latest emsdk 3.1.68] (rust-lang/rust#131533), which fixes an ABI-incompatibility with Emscripten >= 3.1.42. If you are locally using a version of emsdk with an incompatible ABI (e.g. before 3.1.42 or a future one), you should build your code with `-Zbuild-std` to ensure that `std` uses the correct ABI. - [Declaring functions with a calling convention not supported on the current target now triggers a hard error] (rust-lang/rust#129935) - [The next-generation trait solver is now enabled for coherence, fixing multiple soundness issues] (rust-lang/rust#130654)

and use cargo-llvm-cov instead of grcov. Support for -Zprofile has been removed from Rust nightly: rust-lang/rust#131829

This was unused after the removal of `-Zprofile` in rust-lang#131829.

rustbot assigned chenyukang Oct 17, 2024

rustbot added A-run-make Area: port run-make Makefiles to rmake.rs S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Oct 17, 2024

Zalathar mentioned this pull request Oct 17, 2024

Remove unstable -Zprofile (gcov-style coverage) rust-lang/compiler-team#798

Closed

3 tasks

jieyouxu added S-waiting-on-MCP Status: PR has a compiler MCP and is waiting for the compiler MCP to complete. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Oct 17, 2024

Remove support for -Zprofile (gcov-style coverage instrumentation)

ce3e14a

Zalathar force-pushed the goodbye-zprofile branch from c543244 to ce3e14a Compare October 30, 2024 22:15

rustbot added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Oct 30, 2024

bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Nov 1, 2024

matthiaskrgr mentioned this pull request Nov 1, 2024

Rollup of 6 pull requests #132446

Closed

Zalathar removed the S-waiting-on-MCP Status: PR has a compiler MCP and is waiting for the compiler MCP to complete. label Nov 1, 2024

rustbot added the relnotes Marks issues that should be documented in the release notes of the next release. label Nov 1, 2024

rustbot mentioned this pull request Nov 1, 2024

Tracking issue for release notes of #131829: Remove support for -Zprofile (gcov-style coverage instrumentation) #132447

Closed

3 tasks

jieyouxu mentioned this pull request Nov 1, 2024

Rollup of 13 pull requests #132462

Closed

cakebaker added a commit to cakebaker/findutils that referenced this pull request Nov 12, 2024

ci: use -Cinstrument-coverage instead of -Zprofile

28c728e

Support for -Zprofile has been removed: rust-lang/rust#131829

cakebaker added a commit to cakebaker/findutils that referenced this pull request Nov 13, 2024

ci: use -Cinstrument-coverage instead of -Zprofile

bca84ba

and use cargo-llvm-cov instead of grcov. Support for -Zprofile has been removed from Rust nightly: rust-lang/rust#131829

PierreZ mentioned this pull request Nov 13, 2024

Fix coverage CI foundationdb-rs/foundationdb-rs#189

Closed

cakebaker added a commit to cakebaker/coreutils that referenced this pull request Nov 14, 2024

ci: use -Cprofile-generate instead of -Zprofile

152eccf

Support for -Zprofile has been removed in rust-lang/rust#131829

cakebaker added a commit to cakebaker/coreutils that referenced this pull request Nov 15, 2024

ci: use -Cprofile-generate instead of -Zprofile

32d8bf1

Support for -Zprofile has been removed in rust-lang/rust#131829

sylvestre mentioned this pull request Nov 16, 2024

code coverage is broken - details of the error uutils/coreutils#6857

Open

Minoru mentioned this pull request Nov 17, 2024

Migrate to source-based code coverage newsboat/newsboat#2917

Merged

pulsastrix mentioned this pull request Nov 20, 2024

ci: update grcov to latest stable version namib-project/dcaf-rs#27

Merged

elcoosp added a commit to elcoosp/scrpr that referenced this pull request Nov 23, 2024

ci: rm -Zprofile see rust-lang/rust#131829

52b6525

simonrouse9461 mentioned this pull request Jan 7, 2025

Code coverage is outdated and not being used partiql/partiql-rust-cli#29

Open

Grinkers added a commit to tiipotto/tii that referenced this pull request Jan 18, 2025

Coverage incantation fix

5a7b064

rust-lang/rust#131829

Grinkers added a commit to tiipotto/tii that referenced this pull request Jan 18, 2025

Coverage incantation fix

ca5f5c0

rust-lang/rust#131829

Grinkers added a commit to tiipotto/tii that referenced this pull request Jan 18, 2025

Coverage incantation fix

5679ff0

rust-lang/rust#131829

Grinkers mentioned this pull request Jan 18, 2025

1.84 chores tiipotto/tii#29

Merged

mbehr1 added a commit to mbehr1/adlt that referenced this pull request Feb 2, 2025

ci(grcov): remove usage of unsupported Zprofile flag

1a88ceb

According to rust-lang/rust#131829 -Zprofile is removed.

mbehr1 added a commit to mbehr1/adlt that referenced this pull request Feb 2, 2025

ci(grcov): remove usage of unsupported Zprofile flag

e10f5d0

According to rust-lang/rust#131829 -Zprofile is removed.

cakebaker added a commit to cakebaker/findutils that referenced this pull request Feb 7, 2025

ci: use -Cinstrument-coverage instead of -Zprofile

9d1a977

and use cargo-llvm-cov instead of grcov. Support for -Zprofile has been removed from Rust nightly: rust-lang/rust#131829

Zalathar mentioned this pull request Feb 13, 2025

cg_llvm: Reduce visibility of all functions in the llvm module #136881

Merged

Zalathar added a commit to dpaoliello/rust that referenced this pull request Feb 13, 2025

Remove LLVMGetModuleContext

659e20f

This was unused after the removal of `-Zprofile` in rust-lang#131829.

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Remove support for `-Zprofile` (gcov-style coverage instrumentation) #131829

Remove support for `-Zprofile` (gcov-style coverage instrumentation) #131829

Zalathar commented Oct 17, 2024 •

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Remove support for -Zprofile (gcov-style coverage instrumentation) #131829

Remove support for -Zprofile (gcov-style coverage instrumentation) #131829

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Remove support for `-Zprofile` (gcov-style coverage instrumentation) #131829

Remove support for `-Zprofile` (gcov-style coverage instrumentation) #131829

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