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Fix some bad formatting in -Zmacro-stats output. #145082

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Merged
merged 2 commits into from
Aug 9, 2025

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nnethercote
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Some cases that are currently handled incorrectly.
I also double-checked that everything looks good on some real-world
crates.
@rustbot rustbot added 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 Aug 8, 2025
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A question: Is a machine-readable mode available (I'm not sure if it's necessary), such as -Zmacro-stats-format=json? The text mode is only human-readable, making it easier for tools to consume and test stability.

() => {}
}
long_name_that_fits_on_a_single_line!();
macro_rules! long_name_that_fits_on_one_line { () => {} }
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Question: How stable is it in extreme situations? Like(Maybe compiled successfully)

// compile-flags: -Zmacro-stats
mod a { pub mod b { pub mod c { pub mod d { pub mod e { pub mod f {
    #[macro_export]
    macro_rules! very_very_very_very_very_long_macro_name_that_is_really_long {
        () => {};
    }
}}}}}}
use crate::a::b::c::d::e::f::very_very_very_very_very_long_macro_name_that_is_really_long as m;
fn main() {
    m!(); m!(); m!();
}

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Similar to long_name_that_doesnt_fit_on_one_line: the numbers are put on the following line.

@nnethercote
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Is a machine-readable mode available

no

@petrochenkov
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@bors r+ rollup

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bors commented Aug 8, 2025

📌 Commit 0239e46 has been approved by petrochenkov

It is now in the queue for this repository.

@bors 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 Aug 8, 2025
bors added a commit that referenced this pull request Aug 9, 2025
Rollup of 23 pull requests

Successful merges:

 - #141658 (rustdoc search: prefer stable items in search results)
 - #141828 (Add diagnostic explaining STATUS_STACK_BUFFER_OVERRUN not only being used for stack buffer overruns if link.exe exits with that exit code)
 - #144823 (coverage: Extract HIR-related helper code out of the main module)
 - #144883 (Remove unneeded `drop_in_place` calls)
 - #144923 (Move several more float tests to floats/mod.rs)
 - #144988 (Add annotations to the graphviz region graph on region origins)
 - #145010 (Couple of minor abi handling cleanups)
 - #145017 (Explicitly disable vector feature on s390x baseline of bad-reg test)
 - #145027 (Optimize `char::is_alphanumeric`)
 - #145050 (add member constraints tests)
 - #145073 (update enzyme submodule to handle llvm 21)
 - #145080 (Escape diff strings in MIR dataflow graphviz)
 - #145082 (Fix some bad formatting in `-Zmacro-stats` output.)
 - #145083 (Fix cross-compilation of Cargo)
 - #145096 (Fix wasm target build with atomics feature)
 - #145097 (remove unnecessary `TypeFoldable` impls)
 - #145100 (Rank doc aliases lower than equivalently matched items)
 - #145103 (rustc_metadata: remove unused private trait impls)
 - #145115 (defer opaque type errors, generally greatly reduce tainting)
 - #145119 (rustc_public: fix missing parenthesis in pretty discriminant)
 - #145124 (Recover `for PAT = EXPR {}`)
 - #145132 (Refactor map_unit_fn lint)
 - #145134 (Reduce indirect assoc parent queries)

r? `@ghost`
`@rustbot` modify labels: rollup
bors added a commit that referenced this pull request Aug 9, 2025
Rollup of 23 pull requests

Successful merges:

 - #141658 (rustdoc search: prefer stable items in search results)
 - #141828 (Add diagnostic explaining STATUS_STACK_BUFFER_OVERRUN not only being used for stack buffer overruns if link.exe exits with that exit code)
 - #144823 (coverage: Extract HIR-related helper code out of the main module)
 - #144883 (Remove unneeded `drop_in_place` calls)
 - #144923 (Move several more float tests to floats/mod.rs)
 - #144988 (Add annotations to the graphviz region graph on region origins)
 - #145010 (Couple of minor abi handling cleanups)
 - #145017 (Explicitly disable vector feature on s390x baseline of bad-reg test)
 - #145027 (Optimize `char::is_alphanumeric`)
 - #145050 (add member constraints tests)
 - #145073 (update enzyme submodule to handle llvm 21)
 - #145080 (Escape diff strings in MIR dataflow graphviz)
 - #145082 (Fix some bad formatting in `-Zmacro-stats` output.)
 - #145083 (Fix cross-compilation of Cargo)
 - #145096 (Fix wasm target build with atomics feature)
 - #145097 (remove unnecessary `TypeFoldable` impls)
 - #145100 (Rank doc aliases lower than equivalently matched items)
 - #145103 (rustc_metadata: remove unused private trait impls)
 - #145115 (defer opaque type errors, generally greatly reduce tainting)
 - #145119 (rustc_public: fix missing parenthesis in pretty discriminant)
 - #145124 (Recover `for PAT = EXPR {}`)
 - #145132 (Refactor map_unit_fn lint)
 - #145134 (Reduce indirect assoc parent queries)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit d0ddeb5 into rust-lang:master Aug 9, 2025
10 checks passed
@rustbot rustbot added this to the 1.91.0 milestone Aug 9, 2025
rust-timer added a commit that referenced this pull request Aug 9, 2025
Rollup merge of #145082 - nnethercote:macro-stats-fix-widths, r=petrochenkov

Fix some bad formatting in `-Zmacro-stats` output.

r? `@petrochenkov`
@jieyouxu
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jieyouxu commented Aug 9, 2025

Hi bors this already merged
@bors r-

@bors bors added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. labels Aug 9, 2025
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jieyouxu commented Aug 9, 2025

@rustbot label: -S-waiting-on-author +S-waiting-on-bors +merged-by-bors

@rustbot rustbot added merged-by-bors This PR was explicitly merged by bors. 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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Aug 9, 2025
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6 participants