Stabilize `-Z print-link-args` as `--print link-args` #91606

joshtriplett · 2021-12-06T22:12:11Z

We have stable options for adding linker arguments; we should have a
stable option to help debug linker arguments.

Add documentation for the new option. In the documentation, make it clear that
the exact format of the output is not a stable guarantee.

rust-highfive · 2021-12-06T22:12:15Z

r? @GuillaumeGomez

(rust-highfive has picked a reviewer for you, use r? to override)

jyn514 · 2021-12-06T23:35:28Z

r? rust-lang/compiler

jyn514 · 2021-12-06T23:35:40Z

cc @cjgillot

src/doc/rustc/src/codegen-options/index.md

wesleywiser · 2021-12-13T22:16:42Z

@rfcbot fcp merge

rfcbot · 2021-12-13T22:16:42Z

petrochenkov · 2021-12-15T06:54:10Z

We actually have this option for printing something:

        --print [crate-name|file-names|sysroot|target-libdir|cfg|target-list|target-cpus|target-features|relocation-models|code-models|tls-models|target-spec-json|native-static-libs]
                        Compiler information to print on stdout

--print link-args would also fit well.

-C options are supposed to be for Codegen after all, which -Cprint-link-args is not.

petrochenkov · 2021-12-15T06:55:08Z

@rfcbot concern "consider changing to --print link-args"

pnkfelix · 2021-12-23T15:10:56Z

@petrochenkov this specific options has output that can depend on the source code input, right?

Is there precedent for other --print variants that depend on the source input? (Its an honest question; I'm not familiar with all the options listed, and could imagine that they all don't have such dependence, or that some do.)

petrochenkov · 2021-12-23T23:58:58Z

Is there precedent for other --print variants that depend on the source input?

--print native-static-libs, for example.

joshtriplett · 2022-01-01T03:34:53Z

@petrochenkov --print link-args seems reasonable; I'll look at what it would take to do that.

We have stable options for adding linker arguments; we should have a stable option to help debug linker arguments.

The documentation makes it clear that the *exact* format of the output is not a stable guarantee.

joshtriplett · 2022-01-09T21:57:17Z

@petrochenkov Done; this PR now stabilizes -Z print-link-args as --print link-args instead.

petrochenkov · 2022-01-10T03:32:38Z

@rfcbot resolve "consider changing to --print link-args"

rfcbot · 2022-01-13T15:22:21Z

🔔 This is now entering its final comment period, as per the review above. 🔔

pnkfelix · 2022-01-20T15:28:58Z

@bors r+

bors · 2022-01-20T15:28:59Z

📌 Commit 371bd46 has been approved by pnkfelix

bors · 2022-01-20T15:29:00Z

🌲 The tree is currently closed for pull requests below priority 600. This pull request will be tested once the tree is reopened.

…askrgr Rollup of 13 pull requests Successful merges: - rust-lang#89747 (Add MaybeUninit::(slice_)as_bytes(_mut)) - rust-lang#89764 (Fix variant index / discriminant confusion in uninhabited enum branching) - rust-lang#91606 (Stabilize `-Z print-link-args` as `--print link-args`) - rust-lang#91694 (rustdoc: decouple stability and const-stability) - rust-lang#92183 (Point at correct argument when async fn output type lifetime disagrees with signature) - rust-lang#92582 (improve `_` constants in item signature handling) - rust-lang#92680 (intra-doc: Use the impl's assoc item where possible) - rust-lang#92704 (Change lint message to be stronger for &T -> &mut T transmute) - rust-lang#92861 (Rustdoc mobile: put out-of-band info on its own line) - rust-lang#92992 (Help optimize out backtraces when disabled) - rust-lang#93038 (Fix star handling in block doc comments) - rust-lang#93108 (:arrow_up: rust-analyzer) - rust-lang#93112 (Fix CVE-2022-21658) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup

Pkgsrc changes: * Bump available bootstraps to 1.59.0. * Delete one patch which no longer applies, adjust another. Upstream changes: Version 1.60.0 (2022-04-07) ========================== Language -------- - [Stabilize `#[cfg(panic = "...")]` for either `"unwind"` or `"abort"`.] [93658] - [Stabilize `#[cfg(target_has_atomic = "...")]` for each integer size and `"ptr"`.][93824] Compiler -------- - [Enable combining `+crt-static` and `relocation-model=pic` on `x86_64-unknown-linux-gnu`][86374] - [Fixes wrong `unreachable_pub` lints on nested and glob public reexport][87487] - [Stabilize `-Z instrument-coverage` as `-C instrument-coverage`][90132] - [Stabilize `-Z print-link-args` as `--print link-args`][91606] - [Add new Tier 3 target `mips64-openwrt-linux-musl`\*][92300] - [Add new Tier 3 target `armv7-unknown-linux-uclibceabi` (softfloat)\*][92383] - [Fix invalid removal of newlines from doc comments][92357] - [Add kernel target for RustyHermit][92670] - [Deny mixing bin crate type with lib crate types][92933] - [Make rustc use `RUST_BACKTRACE=full` by default][93566] - [Upgrade to LLVM 14][93577] \* Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - [Guarantee call order for `sort_by_cached_key`][89621] - [Improve `Duration::try_from_secs_f32`/`f64` accuracy by directly processing exponent and mantissa][90247] - [Make `Instant::{duration_since, elapsed, sub}` saturating][89926] - [Remove non-monotonic clocks workarounds in `Instant::now`][89926] - [Make `BuildHasherDefault`, `iter::Empty` and `future::Pending` covariant][92630] Stabilized APIs --------------- - [`Arc::new_cyclic`][arc_new_cyclic] - [`Rc::new_cyclic`][rc_new_cyclic] - [`slice::EscapeAscii`][slice_escape_ascii] - [`<[u8]>::escape_ascii`][slice_u8_escape_ascii] - [`u8::escape_ascii`][u8_escape_ascii] - [`Vec::spare_capacity_mut`][vec_spare_capacity_mut] - [`MaybeUninit::assume_init_drop`][assume_init_drop] - [`MaybeUninit::assume_init_read`][assume_init_read] - [`i8::abs_diff`][i8_abs_diff] - [`i16::abs_diff`][i16_abs_diff] - [`i32::abs_diff`][i32_abs_diff] - [`i64::abs_diff`][i64_abs_diff] - [`i128::abs_diff`][i128_abs_diff] - [`isize::abs_diff`][isize_abs_diff] - [`u8::abs_diff`][u8_abs_diff] - [`u16::abs_diff`][u16_abs_diff] - [`u32::abs_diff`][u32_abs_diff] - [`u64::abs_diff`][u64_abs_diff] - [`u128::abs_diff`][u128_abs_diff] - [`usize::abs_diff`][usize_abs_diff] - [`Display for io::ErrorKind`][display_error_kind] - [`From<u8> for ExitCode`][from_u8_exit_code] - [`Not for !` (the "never" type)][not_never] - [_Op_`Assign<$t> for Wrapping<$t>`][wrapping_assign_ops] - [`arch::is_aarch64_feature_detected!`][is_aarch64_feature_detected] Cargo ----- - [Port cargo from `toml-rs` to `toml_edit`][cargo/10086] - [Stabilize `-Ztimings` as `--timings`][cargo/10245] - [Stabilize namespaced and weak dependency features.][cargo/10269] - [Accept more `cargo:rustc-link-arg-*` types from build script output.][cargo/10274] - [cargo-new should not add ignore rule on Cargo.lock inside subdirs][cargo/10379] Misc ---- - [Ship docs on Tier 2 platforms by reusing the closest Tier 1 platform docs][92800] - [Drop rustc-docs from complete profile][93742] - [bootstrap: tidy up flag handling for llvm build][93918] Compatibility Notes ------------------- - [Remove compiler-rt linking hack on Android][83822] - [Mitigations for platforms with non-monotonic clocks have been removed from `Instant::now`][89926]. On platforms that don't provide monotonic clocks, an instant is not guaranteed to be greater than an earlier instant anymore. - [`Instant::{duration_since, elapsed, sub}` do not panic anymore on underflow, saturating to `0` instead][89926]. In the real world the panic happened mostly on platforms with buggy monotonic clock implementations rather than catching programming errors like reversing the start and end times. Such programming errors will now results in `0` rather than a panic. - In a future release we're planning to increase the baseline requirements for the Linux kernel to version 3.2, and for glibc to version 2.17. We'd love your feedback in [PR #95026][95026]. Internal Changes ---------------- These changes provide no direct user facing benefits, but represent significant improvements to the internals and overall performance of rustc and related tools. - [Switch all libraries to the 2021 edition][92068] [83822]: rust-lang/rust#83822 [86374]: rust-lang/rust#86374 [87487]: rust-lang/rust#87487 [89621]: rust-lang/rust#89621 [89926]: rust-lang/rust#89926 [90132]: rust-lang/rust#90132 [90247]: rust-lang/rust#90247 [91606]: rust-lang/rust#91606 [92068]: rust-lang/rust#92068 [92300]: rust-lang/rust#92300 [92357]: rust-lang/rust#92357 [92383]: rust-lang/rust#92383 [92630]: rust-lang/rust#92630 [92670]: rust-lang/rust#92670 [92800]: rust-lang/rust#92800 [92933]: rust-lang/rust#92933 [93566]: rust-lang/rust#93566 [93577]: rust-lang/rust#93577 [93658]: rust-lang/rust#93658 [93742]: rust-lang/rust#93742 [93824]: rust-lang/rust#93824 [93918]: rust-lang/rust#93918 [95026]: rust-lang/rust#95026 [cargo/10086]: rust-lang/cargo#10086 [cargo/10245]: rust-lang/cargo#10245 [cargo/10269]: rust-lang/cargo#10269 [cargo/10274]: rust-lang/cargo#10274 [cargo/10379]: rust-lang/cargo#10379 [arc_new_cyclic]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.new_cyclic [rc_new_cyclic]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.new_cyclic [slice_escape_ascii]: https://doc.rust-lang.org/stable/std/slice/struct.EscapeAscii.html [slice_u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.escape_ascii [u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.escape_ascii [vec_spare_capacity_mut]: https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.spare_capacity_mut [assume_init_drop]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_drop [assume_init_read]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_read [i8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.abs_diff [i16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.abs_diff [i32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.abs_diff [i64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.abs_diff [i128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.abs_diff [isize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.abs_diff [u8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.abs_diff [u16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.abs_diff [u32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.abs_diff [u64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.abs_diff [u128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.abs_diff [usize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.abs_diff [display_error_kind]: https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#impl-Display [from_u8_exit_code]: https://doc.rust-lang.org/stable/std/process/struct.ExitCode.html#impl-From%3Cu8%3E [not_never]: https://doc.rust-lang.org/stable/std/primitive.never.html#impl-Not [wrapping_assign_ops]: https://doc.rust-lang.org/stable/std/num/struct.Wrapping.html#trait-implementations [is_aarch64_feature_detected]: https://doc.rust-lang.org/stable/std/arch/macro.is_aarch64_feature_detected.html

Pkgsrc changes: * Bump available bootstraps to 1.59.0. * Adjust line number in patches which had non-zero offsets. Upstream changes: Version 1.60.0 (2022-04-07) =========================== Language -------- - [Stabilize `#[cfg(panic = "...")]` for either `"unwind"` or `"abort"`.] [93658] - [Stabilize `#[cfg(target_has_atomic = "...")]` for each integer size and `"ptr"`.][93824] Compiler -------- - [Enable combining `+crt-static` and `relocation-model=pic` on `x86_64-unknown-linux-gnu`][86374] - [Fixes wrong `unreachable_pub` lints on nested and glob public reexport][87487] - [Stabilize `-Z instrument-coverage` as `-C instrument-coverage`][90132] - [Stabilize `-Z print-link-args` as `--print link-args`][91606] - [Add new Tier 3 target `mips64-openwrt-linux-musl`\*][92300] - [Add new Tier 3 target `armv7-unknown-linux-uclibceabi` (softfloat)\*][92383] - [Fix invalid removal of newlines from doc comments][92357] - [Add kernel target for RustyHermit][92670] - [Deny mixing bin crate type with lib crate types][92933] - [Make rustc use `RUST_BACKTRACE=full` by default][93566] - [Upgrade to LLVM 14][93577] \* Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - [Guarantee call order for `sort_by_cached_key`][89621] - [Improve `Duration::try_from_secs_f32`/`f64` accuracy by directly processing exponent and mantissa][90247] - [Make `Instant::{duration_since, elapsed, sub}` saturating][89926] - [Remove non-monotonic clocks workarounds in `Instant::now`][89926] - [Make `BuildHasherDefault`, `iter::Empty` and `future::Pending` covariant][92630] Stabilized APIs --------------- - [`Arc::new_cyclic`][arc_new_cyclic] - [`Rc::new_cyclic`][rc_new_cyclic] - [`slice::EscapeAscii`][slice_escape_ascii] - [`<[u8]>::escape_ascii`][slice_u8_escape_ascii] - [`u8::escape_ascii`][u8_escape_ascii] - [`Vec::spare_capacity_mut`][vec_spare_capacity_mut] - [`MaybeUninit::assume_init_drop`][assume_init_drop] - [`MaybeUninit::assume_init_read`][assume_init_read] - [`i8::abs_diff`][i8_abs_diff] - [`i16::abs_diff`][i16_abs_diff] - [`i32::abs_diff`][i32_abs_diff] - [`i64::abs_diff`][i64_abs_diff] - [`i128::abs_diff`][i128_abs_diff] - [`isize::abs_diff`][isize_abs_diff] - [`u8::abs_diff`][u8_abs_diff] - [`u16::abs_diff`][u16_abs_diff] - [`u32::abs_diff`][u32_abs_diff] - [`u64::abs_diff`][u64_abs_diff] - [`u128::abs_diff`][u128_abs_diff] - [`usize::abs_diff`][usize_abs_diff] - [`Display for io::ErrorKind`][display_error_kind] - [`From<u8> for ExitCode`][from_u8_exit_code] - [`Not for !` (the "never" type)][not_never] - [_Op_`Assign<$t> for Wrapping<$t>`][wrapping_assign_ops] - [`arch::is_aarch64_feature_detected!`][is_aarch64_feature_detected] Cargo ----- - [Port cargo from `toml-rs` to `toml_edit`][cargo/10086] - [Stabilize `-Ztimings` as `--timings`][cargo/10245] - [Stabilize namespaced and weak dependency features.][cargo/10269] - [Accept more `cargo:rustc-link-arg-*` types from build script output.][cargo/10274] - [cargo-new should not add ignore rule on Cargo.lock inside subdirs][cargo/10379] Misc ---- - [Ship docs on Tier 2 platforms by reusing the closest Tier 1 platform docs][92800] - [Drop rustc-docs from complete profile][93742] - [bootstrap: tidy up flag handling for llvm build][93918] Compatibility Notes ------------------- - [Remove compiler-rt linking hack on Android][83822] - [Mitigations for platforms with non-monotonic clocks have been removed from `Instant::now`][89926]. On platforms that don't provide monotonic clocks, an instant is not guaranteed to be greater than an earlier instant anymore. - [`Instant::{duration_since, elapsed, sub}` do not panic anymore on underflow, saturating to `0` instead][89926]. In the real world the panic happened mostly on platforms with buggy monotonic clock implementations rather than catching programming errors like reversing the start and end times. Such programming errors will now results in `0` rather than a panic. - In a future release we're planning to increase the baseline requirements for the Linux kernel to version 3.2, and for glibc to version 2.17. We'd love your feedback in [PR #95026][95026]. Internal Changes ---------------- These changes provide no direct user facing benefits, but represent significant improvements to the internals and overall performance of rustc and related tools. - [Switch all libraries to the 2021 edition][92068] [83822]: rust-lang/rust#83822 [86374]: rust-lang/rust#86374 [87487]: rust-lang/rust#87487 [89621]: rust-lang/rust#89621 [89926]: rust-lang/rust#89926 [90132]: rust-lang/rust#90132 [90247]: rust-lang/rust#90247 [91606]: rust-lang/rust#91606 [92068]: rust-lang/rust#92068 [92300]: rust-lang/rust#92300 [92357]: rust-lang/rust#92357 [92383]: rust-lang/rust#92383 [92630]: rust-lang/rust#92630 [92670]: rust-lang/rust#92670 [92800]: rust-lang/rust#92800 [92933]: rust-lang/rust#92933 [93566]: rust-lang/rust#93566 [93577]: rust-lang/rust#93577 [93658]: rust-lang/rust#93658 [93742]: rust-lang/rust#93742 [93824]: rust-lang/rust#93824 [93918]: rust-lang/rust#93918 [95026]: rust-lang/rust#95026 [cargo/10086]: rust-lang/cargo#10086 [cargo/10245]: rust-lang/cargo#10245 [cargo/10269]: rust-lang/cargo#10269 [cargo/10274]: rust-lang/cargo#10274 [cargo/10379]: rust-lang/cargo#10379 [arc_new_cyclic]: https://doc.rust-lang.org/stable/std/sync/struct.Arc.html#method.new_cyclic [rc_new_cyclic]: https://doc.rust-lang.org/stable/std/rc/struct.Rc.html#method.new_cyclic [slice_escape_ascii]: https://doc.rust-lang.org/stable/std/slice/struct.EscapeAscii.html [slice_u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.escape_ascii [u8_escape_ascii]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.escape_ascii [vec_spare_capacity_mut]: https://doc.rust-lang.org/stable/std/vec/struct.Vec.html#method.spare_capacity_mut [assume_init_drop]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_drop [assume_init_read]: https://doc.rust-lang.org/stable/std/mem/union.MaybeUninit.html#method.assume_init_read [i8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i8.html#method.abs_diff [i16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i16.html#method.abs_diff [i32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i32.html#method.abs_diff [i64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i64.html#method.abs_diff [i128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.i128.html#method.abs_diff [isize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.isize.html#method.abs_diff [u8_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u8.html#method.abs_diff [u16_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u16.html#method.abs_diff [u32_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u32.html#method.abs_diff [u64_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u64.html#method.abs_diff [u128_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.u128.html#method.abs_diff [usize_abs_diff]: https://doc.rust-lang.org/stable/std/primitive.usize.html#method.abs_diff [display_error_kind]: https://doc.rust-lang.org/stable/std/io/enum.ErrorKind.html#impl-Display [from_u8_exit_code]: https://doc.rust-lang.org/stable/std/process/struct.ExitCode.html#impl-From%3Cu8%3E [not_never]: https://doc.rust-lang.org/stable/std/primitive.never.html#impl-Not [wrapping_assign_ops]: https://doc.rust-lang.org/stable/std/num/struct.Wrapping.html#trait-implementations [is_aarch64_feature_detected]: https://doc.rust-lang.org/stable/std/arch/macro.is_aarch64_feature_detected.html

rust-highfive assigned GuillaumeGomez Dec 6, 2021

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joshtriplett changed the title ~~stabilize print link args~~ Stabilize -Z print-link-args as -C print-link-args Dec 6, 2021

jyn514 added the needs-fcp This change is insta-stable, so needs a completed FCP to proceed. label Dec 6, 2021

rust-highfive assigned cjgillot and unassigned GuillaumeGomez Dec 6, 2021

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rfcbot added proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. labels Dec 13, 2021

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joshtriplett force-pushed the stabilize-print-link-args branch from bf55cfc to 7b042b4 Compare January 9, 2022 21:05

joshtriplett changed the title ~~Stabilize -Z print-link-args as -C print-link-args~~ Stabilize -Z print-link-args as --print link-args Jan 9, 2022

joshtriplett force-pushed the stabilize-print-link-args branch from 7b042b4 to be6ce3a Compare January 9, 2022 21:07

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joshtriplett added 2 commits January 9, 2022 13:22

Stabilize -Z print-link-args as --print link-args

cd626fe

We have stable options for adding linker arguments; we should have a stable option to help debug linker arguments.

Document --print link-args

371bd46

The documentation makes it clear that the *exact* format of the output is not a stable guarantee.

joshtriplett force-pushed the stabilize-print-link-args branch from be6ce3a to 371bd46 Compare January 9, 2022 21:22

rfcbot added final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. and removed proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. labels Jan 13, 2022

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bors added the S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. label Jan 20, 2022

pnkfelix added the relnotes Marks issues that should be documented in the release notes of the next release. label Jan 20, 2022

matthiaskrgr mentioned this pull request Jan 20, 2022

Rollup of 13 pull requests #93119

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bors merged commit 02379e9 into rust-lang:master Jan 20, 2022

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Cannot build on MacOS: failed to run rustc tiqwab/xv6-rust#26

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Stabilize `-Z print-link-args` as `--print link-args` #91606

Stabilize `-Z print-link-args` as `--print link-args` #91606

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Stabilize -Z print-link-args as --print link-args #91606

Stabilize -Z print-link-args as --print link-args #91606

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petrochenkov commented Dec 23, 2021

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joshtriplett commented Jan 9, 2022

petrochenkov commented Jan 10, 2022

rfcbot commented Jan 13, 2022

pnkfelix commented Jan 20, 2022

bors commented Jan 20, 2022

bors commented Jan 20, 2022

Stabilize `-Z print-link-args` as `--print link-args` #91606

Stabilize `-Z print-link-args` as `--print link-args` #91606

joshtriplett commented Dec 6, 2021 •

edited

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rfcbot commented Dec 13, 2021 •

edited by michaelwoerister

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