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Update comment for STAGE0_MISSING_TARGETS#149840

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jieyouxu:bootstrap-missing-stage0
Dec 22, 2025
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Update comment for STAGE0_MISSING_TARGETS#149840
bors merged 1 commit intorust-lang:mainfrom
jieyouxu:bootstrap-missing-stage0

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@jieyouxu jieyouxu commented Dec 10, 2025 •
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rustbot commented Dec 10, 2025

The Miri subtree was changed

cc @rust-lang/miri

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rustbot commented Dec 10, 2025

r? @Mark-Simulacrum

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@rustbot rustbot added A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-bootstrap Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. T-release Relevant to the release subteam, 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. labels Dec 10, 2025
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jieyouxu commented Dec 10, 2025

@rustbot blocked

@rustbot rustbot added S-blocked Status: Blocked on something else such as an RFC or other implementation work. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 10, 2025
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@jieyouxu jieyouxu force-pushed the bootstrap-missing-stage0 branch from 36fe951 to 48d34c9 Compare December 22, 2025 01:24
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rustbot commented Dec 22, 2025

This PR was rebased onto a different main commit. Here's a range-diff highlighting what actually changed.

Rebasing is a normal part of keeping PRs up to date, so no action is needed—this note is just to help reviewers.

@jieyouxu jieyouxu added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed A-LLVM Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues. 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. S-blocked Status: Blocked on something else such as an RFC or other implementation work. T-release Relevant to the release subteam, which will review and decide on the PR/issue. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Dec 22, 2025
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jieyouxu commented Dec 22, 2025

Rerolling since Mark has like 30 in-review PRs
@rustbot reroll

@rustbot rustbot assigned Zalathar and unassigned Mark-Simulacrum Dec 22, 2025
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@jieyouxu jieyouxu force-pushed the bootstrap-missing-stage0 branch 2 times, most recently from 75e9176 to bc4737d Compare December 22, 2025 02:29
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Zalathar commented Dec 22, 2025

Nit: Since we're modifying this whole comment, could you also replace the // with /// so that it becomes visible as a doc comment in IDE hovers and such?

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src/bootstrap/src/core/sanity.rs Outdated
Comment on lines 36 to 38
// Targets can be removed from this list once they are present in the stage 0 compiler during a
// bootstrap compiler bump (typically updating the bootstrap compiler to a newer beta compiler that
// *does* already know about the targets).
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I find this phrasing a bit confusing.

Is the idea that people should feel free to update this list as part of a bootstrap beta bump, if the new stage0 compiler now knows about the missing targets?

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@jieyouxu jieyouxu Dec 22, 2025 •
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I guess the idea is that it'll happen during the usual release process bootstrap compiler bumps. But such bumps can also rarely happen manually outside of the usual release procedures (I've done that once or twice I think?) but definitely not for updating missing stage 0 target reasons.

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I changed it to say

Targets can be removed from this list during the usual release process bootstrap compiler bumps.

... which, I don't know, might be worse?

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I would at least want to mention again why they can be removed, i.e. because the newly-bumped stage0 compiler now knows about the formerly-missing targets.

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Added that remark in de0945b

@jieyouxu jieyouxu force-pushed the bootstrap-missing-stage0 branch from bc4737d to 00013a0 Compare December 22, 2025 02:41
@jieyouxu jieyouxu force-pushed the bootstrap-missing-stage0 branch from 00013a0 to de0945b Compare December 22, 2025 02:54
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Zalathar commented Dec 22, 2025

Looks good; r=me if you're done making edits.

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jieyouxu commented Dec 22, 2025

@bors r=Zalathar rollup

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bors commented Dec 22, 2025

📌 Commit de0945b has been approved by Zalathar

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 Dec 22, 2025
@JonathanBrouwer JonathanBrouwer mentioned this pull request Dec 22, 2025
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Auto merge of #150240 - JonathanBrouwer:rollup-anx8c35, r=JonathanBro…
e951f47 
…uwer

Rollup of 4 pull requests

Successful merges:

 - #149840 (Update comment for `STAGE0_MISSING_TARGETS`)
 - #150109 (crash test readme: point to rustc-dev-guide)
 - #150204 (Port `#[cfi_encoding]` to attribute parser)
 - #150237 (Skip tidy target-specific check for `run-make-cargo` too)

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit e1f41dc into rust-lang:main Dec 22, 2025
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@rustbot rustbot added this to the 1.94.0 milestone Dec 22, 2025
rust-timer added a commit that referenced this pull request Dec 22, 2025
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Unrolled build for #149840
a0c6ffd 
Rollup merge of #149840 - jieyouxu:bootstrap-missing-stage0, r=Zalathar

Update comment for `STAGE0_MISSING_TARGETS`
@jieyouxu jieyouxu deleted the bootstrap-missing-stage0 branch December 22, 2025 14:00
@github-actions github-actions bot mentioned this pull request Dec 23, 2025
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Kobzol pushed a commit to Kobzol/rustc_codegen_cranelift that referenced this pull request Dec 23, 2025
@bors
Auto merge of #150240 - JonathanBrouwer:rollup-anx8c35, r=JonathanBro…
2ea6f8f 
…uwer

Rollup of 4 pull requests

Successful merges:

 - rust-lang/rust#149840 (Update comment for `STAGE0_MISSING_TARGETS`)
 - rust-lang/rust#150109 (crash test readme: point to rustc-dev-guide)
 - rust-lang/rust#150204 (Port `#[cfi_encoding]` to attribute parser)
 - rust-lang/rust#150237 (Skip tidy target-specific check for `run-make-cargo` too)

r? `@ghost`
`@rustbot` modify labels: rollup
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