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Merged
merged 4 commits into from
Feb 16, 2024
Merged

Add clippy into the known cfg list #121137

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0860fc1
Add clippy into the known `cfg` list
GuillaumeGomez Feb 15, 2024
33e9fc5
Update ui tests to take into account the new clippy cfg
GuillaumeGomez Feb 15, 2024
4085421
Update rust book cfg chapter
GuillaumeGomez Feb 15, 2024
533e3f0
Add comment to remind devs to update the unstable book related chapte…
GuillaumeGomez Feb 15, 2024
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10 changes: 7 additions & 3 deletions compiler/rustc_session/src/config.rs
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Expand Up @@ -1435,12 +1435,16 @@ impl CheckCfg {
//
// When adding a new config here you should also update
// `tests/ui/check-cfg/well-known-values.rs`.
//
// Don't forget to update `src/doc/unstable-book/src/compiler-flags/check-cfg.md`
// in the unstable book as well!

ins!(sym::debug_assertions, no_values);

// These three are never set by rustc, but we set them anyway: they
// should not trigger a lint because `cargo doc`, `cargo test`, and
// `cargo miri run` (respectively) can set them.
// These four are never set by rustc, but we set them anyway: they
// should not trigger a lint because `cargo clippy`, `cargo doc`,
// `cargo test` and `cargo miri run` (respectively) can set them.
ins!(sym::clippy, no_values);
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It needs to be added in tests/ui/check-cfg/well-known-values.rs.

You will also probably need to bless the directory

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The check-cfg section of the unstable book also needs updating:

rust/src/doc/unstable-book/src/compiler-flags/check-cfg.md

Lines 80 to 87 in 4ae1e79

As of `2024-01-09T`, the list of known names is as follows:
<!--- See CheckCfg::fill_well_known in compiler/rustc_session/src/config.rs -->
- `debug_assertions`
- `doc`
- `doctest`
- `miri`

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Good catch!

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The code here should have a comment mentioning the docs :)

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Adding it.

ins!(sym::doc, no_values);
ins!(sym::doctest, no_values);
ins!(sym::miri, no_values);
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3 changes: 2 additions & 1 deletion src/doc/unstable-book/src/compiler-flags/check-cfg.md
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Expand Up @@ -77,10 +77,11 @@ Those well known names and values follows the same stability as what they refer
Well known names and values checking is always enabled as long as at least one
`--check-cfg` argument is present.

As of `2024-01-09T`, the list of known names is as follows:
As of `2024-02-15T`, the list of known names is as follows:

<!--- See CheckCfg::fill_well_known in compiler/rustc_session/src/config.rs -->

- `clippy`
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Would be great if you could also update the date above to 2024-02-15T

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👍

- `debug_assertions`
- `doc`
- `doctest`
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/allow-same-level.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `FALSE`
LL | #[cfg(FALSE)]
| ^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(FALSE)`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/cargo-feature.none.stderr
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Expand Up @@ -25,7 +25,7 @@ warning: unexpected `cfg` condition name: `tokio_unstable`
LL | #[cfg(tokio_unstable)]
| ^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(tokio_unstable)");` to the top of a `build.rs`
= note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration

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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/cargo-feature.some.stderr
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Expand Up @@ -25,7 +25,7 @@ warning: unexpected `cfg` condition name: `tokio_unstable`
LL | #[cfg(tokio_unstable)]
| ^^^^^^^^^^^^^^
|
= help: expected names are: `CONFIG_NVME`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `CONFIG_NVME`, `clippy`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: consider using a Cargo feature instead or adding `println!("cargo:rustc-check-cfg=cfg(tokio_unstable)");` to the top of a `build.rs`
= note: see <https://doc.rust-lang.org/nightly/cargo/reference/unstable.html#check-cfg> for more information about checking conditional configuration

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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/cfg-value-for-cfg-name-duplicate.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `value`
LL | #[cfg(value)]
| ^^^^^
|
= help: expected names are: `bar`, `bee`, `cow`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `bar`, `bee`, `clippy`, `cow`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(value)`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/cfg-value-for-cfg-name-multiple.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `my_value`
LL | #[cfg(my_value)]
| ^^^^^^^^
|
= help: expected names are: `bar`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `bar`, `clippy`, `debug_assertions`, `doc`, `doctest`, `foo`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(my_value)`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/cfg-value-for-cfg-name.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `linux`
LL | #[cfg(linux)]
| ^^^^^ help: found config with similar value: `target_os = "linux"`
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(linux)`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/compact-names.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `target_architecture`
LL | #[cfg(target(os = "linux", architecture = "arm"))]
| ^^^^^^^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(target_architecture, values("arm"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/exhaustive-names-values.empty_cfg.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
LL | #[cfg(unknown_key = "value")]
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(unknown_key, values("value"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/exhaustive-names-values.feature.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
LL | #[cfg(unknown_key = "value")]
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(unknown_key, values("value"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/exhaustive-names-values.full.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
LL | #[cfg(unknown_key = "value")]
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(unknown_key, values("value"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/exhaustive-names.stderr
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Expand Up @@ -4,7 +4,7 @@ warning: unexpected `cfg` condition name: `unknown_key`
LL | #[cfg(unknown_key = "value")]
| ^^^^^^^^^^^^^^^^^^^^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(unknown_key, values("value"))`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration
= note: `#[warn(unexpected_cfgs)]` on by default
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2 changes: 1 addition & 1 deletion tests/ui/check-cfg/mix.stderr
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Expand Up @@ -44,7 +44,7 @@ warning: unexpected `cfg` condition name: `uu`
LL | #[cfg_attr(uu, test)]
| ^^
|
= help: expected names are: `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `unix`, `windows`
= help: to expect this configuration use `--check-cfg=cfg(uu)`
= note: see <https://doc.rust-lang.org/nightly/unstable-book/compiler-flags/check-cfg.html> for more information about checking conditional configuration

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