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Port #[macro_export] to the new attribute parsing infrastructure #143857

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Ports macro_export to the new attribute parsing infrastructure for #131229 (comment)

r? @oli-obk

cc @JonathanBrouwer @jdonszelmann

@rustbot rustbot added A-attributes Area: Attributes (`#[…]`, `#![…]`) 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. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output. labels Jul 12, 2025
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rustbot commented Jul 12, 2025

Some changes occurred in compiler/rustc_attr_parsing

cc @jdonszelmann

Some changes occurred in compiler/rustc_attr_data_structures

cc @jdonszelmann

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

Some changes occurred in compiler/rustc_passes/src/check_attr.rs

cc @jdonszelmann

Periodic1911
Periodic1911 commented Jul 12, 2025
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tests/ui/attributes/invalid_macro_export_argument.rs
@@ -26,12 +22,15 @@ macro_rules! d {
}

#[macro_export()]
//~^ ERROR malformed `macro_export` attribute input
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@Periodic1911 Periodic1911 Jul 12, 2025 •
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This is a breaking change! Malformed macro_export attributes have had a lint since 2023 (deny(invalid_macro_export_arguments)). This PR makes this an error.
Furthermore, #[macro_export()] has been accepted since 2023, and this PR makes that an error too.

As discussed in #142838 (comment), we can make breaking changes as long as we do a crater run. So this PR needs a crater run.

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bors commented Jul 13, 2025

☔ The latest upstream changes (presumably #140717) made this pull request unmergeable. Please resolve the merge conflicts.

@jdonszelmann jdonszelmann mentioned this pull request Jul 13, 2025
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@Periodic1911 if you rebase I'll run a crater

@jdonszelmann jdonszelmann added T-lang Relevant to the language team I-lang-nominated Nominated for discussion during a lang team meeting. labels Jul 13, 2025
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@rust-lang/lang this makes a long-standing warning an error with a crater run. Just wanted to notify you

@traviscross traviscross added needs-fcp This change is insta-stable, or significant enough to need a team FCP to proceed. P-lang-drag-1 Lang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang and removed T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output. labels Jul 13, 2025
@rustbot rustbot added the T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output. label Jul 13, 2025
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@bors try

bors added a commit that referenced this pull request Jul 13, 2025
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Auto merge of #143857 - Periodic1911:macro-export, r=<try>
723ab94 
Port #[macro_export] to the new attribute parsing infrastructure

Ports macro_export to the new attribute parsing infrastructure for #131229 (comment)

r? `@oli-obk`

cc `@JonathanBrouwer` `@jdonszelmann`
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bors commented Jul 13, 2025

⌛ Trying commit ac1f122 with merge 723ab94...

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bors commented Jul 13, 2025

☀️ Try build successful - checks-actions
Build commit: 723ab94 (723ab942d877517caf445dafde0416803ef56501)

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@craterbot check

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👌 Experiment pr-143857 created and queued.
🤖 Automatically detected try build 723ab94
🔍 You can check out the queue and this experiment's details.

ℹ️ Crater is a tool to run experiments across parts of the Rust ecosystem. Learn more

@craterbot craterbot added S-waiting-on-crater Status: Waiting on a crater run to be completed. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jul 13, 2025
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A-attributes Area: Attributes (`#[…]`, `#![…]`) I-lang-nominated Nominated for discussion during a lang team meeting. needs-fcp This change is insta-stable, or significant enough to need a team FCP to proceed. P-lang-drag-1 Lang team prioritization drag level 1. https://rust-lang.zulipchat.com/#narrow/channel/410516-t-lang S-waiting-on-crater Status: Waiting on a crater run to be completed. T-lang Relevant to the language team T-rustdoc-frontend Relevant to the rustdoc-frontend team, which will review and decide on the web UI/UX output.
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