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Allow registering tool lints with register_tool #83216

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merged 1 commit into from
Mar 18, 2021

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@jyn514 jyn514 commented Mar 16, 2021

Previously, there was no way to add a custom tool prefix, even if the tool
itself had registered a lint:

#![feature(register_tool)]
#![register_tool(xyz)]
#![warn(xyz::my_lint)]
$ rustc unknown-lint.rs  --crate-type lib
error[E0710]: an unknown tool name found in scoped lint: `xyz::my_lint`
 --> unknown-lint.rs:3:9
  |
3 | #![warn(xyz::my_lint)]
  |         ^^^

This allows opting-in to lints from other tools using register_tool.

cc #66079 (comment), @chorman0773
r? @petrochenkov

Previously, there was no way to add a custom tool prefix, even if the tool
itself had registered a lint:

 ```
 #![feature(register_tool)]
 #![register_tool(xyz)]
 #![warn(xyz::my_lint)]
 ```

```
$ rustc unknown-lint.rs  --crate-type lib
error[E0710]: an unknown tool name found in scoped lint: `xyz::my_lint`
 --> unknown-lint.rs:3:9
  |
3 | #![warn(xyz::my_lint)]
  |         ^^^
```

This allows opting-in to lints from other tools using `register_tool`.
@jyn514 jyn514 added A-lints Area: Lints (warnings about flaws in source code) such as unused_mut. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Mar 16, 2021
@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Mar 16, 2021
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@bors r+

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bors commented Mar 16, 2021

📌 Commit e3031fe has been approved by petrochenkov

@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 Mar 16, 2021
Dylan-DPC-zz pushed a commit to Dylan-DPC-zz/rust that referenced this pull request Mar 17, 2021
Allow registering tool lints with `register_tool`

Previously, there was no way to add a custom tool prefix, even if the tool
itself had registered a lint:

 ```rust
 #![feature(register_tool)]
 #![register_tool(xyz)]
 #![warn(xyz::my_lint)]
 ```

```
$ rustc unknown-lint.rs  --crate-type lib
error[E0710]: an unknown tool name found in scoped lint: `xyz::my_lint`
 --> unknown-lint.rs:3:9
  |
3 | #![warn(xyz::my_lint)]
  |         ^^^
```

This allows opting-in to lints from other tools using `register_tool`.

cc rust-lang#66079 (comment), `@chorman0773`
r? `@petrochenkov`
bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 17, 2021
Rollup of 11 pull requests

Successful merges:

 - rust-lang#82191 (Vec::dedup_by optimization)
 - rust-lang#82270 (Emit error when trying to use assembler syntax directives in `asm!`)
 - rust-lang#82434 (Add more links between hash and btree collections)
 - rust-lang#83080 (Make source-based code coverage compatible with MIR inlining)
 - rust-lang#83168 (Extend `proc_macro_back_compat` lint to `procedural-masquerade`)
 - rust-lang#83192 (ci/docker: Add SDK/NDK level 21 to android docker for 32bit platforms)
 - rust-lang#83204 (Simplify C compilation for Fortanix-SGX target)
 - rust-lang#83216 (Allow registering tool lints with `register_tool`)
 - rust-lang#83223 (Display error details when a `mmap` call fails)
 - rust-lang#83228 (Don't show HTML diff if tidy isn't installed for rustdoc tests)
 - rust-lang#83231 (Switch riscvgc-unknown-none-elf use lp64d ABI)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit bcb9226 into rust-lang:master Mar 18, 2021
@rustbot rustbot added this to the 1.52.0 milestone Mar 18, 2021
@jyn514 jyn514 deleted the register-tool branch March 18, 2021 03:51
bors added a commit to rust-lang-ci/rust that referenced this pull request Jul 4, 2021
Warn when `rustdoc::` group is omitted from lint names

When rustdoc lints were first made a tool lint, they gave an unconditional warning when you used the original name:
```
warning: lint `broken_intra_doc_links` has been renamed to `rustdoc::broken_intra_doc_links`
  --> $DIR/renamed-lint-still-applies.rs:2:9
   |
LL | #![deny(broken_intra_doc_links)]
   |         ^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::broken_intra_doc_links`
   |
   = note: `#[warn(renamed_and_removed_lints)]` on by default
```
That was reverted in rust-lang#83203 because adding `rustdoc::x` lints would cause the code to break on old versions of the compiler (due to rust-lang#66079 (comment), "fixed" in rust-lang#83216 in the sense that you can now opt-in to not breaking on nightly, which is not ideal but `register_tool` is a long way from stabilizing). Since rust-lang#80527 is now on 1.52.0 stable, we can re-enable the warning. For nightly users, they can change immediately and still have their code work on stable; for stable users, they can change their code in 12 weeks and still have it work up to 3 releases back (about 18 weeks). That seems reasonable to me.

r? `@Manishearth` cc `@rust-lang/rustdoc`
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5 participants