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Tweak suggestion spans for invalid crate-level inner attribute

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CC #89566.
This commit is contained in:
Esteban Küber 2023-10-18 00:24:21 +00:00
parent 6f65201659
commit 27919ceba7
11 changed files with 160 additions and 60 deletions
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3
compiler/rustc_passes/messages.ftl
View file

@ -393,6 +393,9 @@ passes_invalid_attr_at_crate_level =
`{$name}` attribute cannot be used at crate level
.suggestion = perhaps you meant to use an outer attribute
passes_invalid_attr_at_crate_level_item =
the inner attribute doesn't annotate this {$kind}
passes_invalid_deprecation_version =
invalid deprecation version found
.label = invalid deprecation version

22
compiler/rustc_passes/src/check_attr.rs
View file

@ -2534,10 +2534,30 @@ fn check_invalid_crate_level_attr(tcx: TyCtxt<'_>, attrs: &[Attribute]) {
if attr.style == AttrStyle::Inner {
for attr_to_check in ATTRS_TO_CHECK {
if attr.has_name(*attr_to_check) {
let item = tcx
.hir()
.items()
.map(|id| tcx.hir().item(id))
.find(|item| !item.span.is_dummy()) // Skip prelude `use`s
.map(|item| errors::ItemFollowingInnerAttr {
span: item.ident.span,
kind: item.kind.descr(),
});
tcx.sess.emit_err(errors::InvalidAttrAtCrateLevel {
span: attr.span,
snippet: tcx.sess.source_map().span_to_snippet(attr.span).ok(),
sugg_span: tcx
.sess
.source_map()
.span_to_snippet(attr.span)
.ok()
.filter(|src| src.starts_with("#!["))
.map(|_| {
attr.span
.with_lo(attr.span.lo() + BytePos(1))
.with_hi(attr.span.lo() + BytePos(2))
}),
name: *attr_to_check,
item,
});
}
}

20
compiler/rustc_passes/src/errors.rs
View file

@ -856,8 +856,15 @@ pub struct UnknownLangItem {
pub struct InvalidAttrAtCrateLevel {
pub span: Span,
pub snippet: Option<String>,
pub sugg_span: Option<Span>,
pub name: Symbol,
pub item: Option<ItemFollowingInnerAttr>,
}
#[derive(Clone, Copy)]
pub struct ItemFollowingInnerAttr {
pub span: Span,
pub kind: &'static str,
}
impl IntoDiagnostic<'_> for InvalidAttrAtCrateLevel {
@ -871,15 +878,18 @@ fn into_diagnostic(
diag.set_arg("name", self.name);
// Only emit an error with a suggestion if we can create a string out
// of the attribute span
if let Some(src) = self.snippet {
let replacement = src.replace("#!", "#");
if let Some(span) = self.sugg_span {
diag.span_suggestion_verbose(
self.span,
span,
fluent::passes_suggestion,
replacement,
String::new(),
rustc_errors::Applicability::MachineApplicable,
);
}
if let Some(item) = self.item {
diag.set_arg("kind", item.kind);
diag.span_label(item.span, fluent::passes_invalid_attr_at_crate_level_item);
}
diag
}
}

8
tests/ui/attributes/unix_sigpipe/unix_sigpipe-crate.stderr
View file

@ -3,11 +3,15 @@ error: `unix_sigpipe` attribute cannot be used at crate level
|
LL | #![unix_sigpipe = "inherit"]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
LL |
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[unix_sigpipe = "inherit"]
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~
LL - #![unix_sigpipe = "inherit"]
LL + #[unix_sigpipe = "inherit"]
|
error: aborting due to previous error

40
tests/ui/derives/issue-36617.stderr
View file

@ -43,55 +43,75 @@ error: `derive` attribute cannot be used at crate level
|
LL | #![derive(Copy)]
| ^^^^^^^^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[derive(Copy)]
| ~~~~~~~~~~~~~~~
LL - #![derive(Copy)]
LL + #[derive(Copy)]
|
error: `test` attribute cannot be used at crate level
--> $DIR/issue-36617.rs:4:1
|
LL | #![test]
| ^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[test]
| ~~~~~~~
LL - #![test]
LL + #[test]
|
error: `test_case` attribute cannot be used at crate level
--> $DIR/issue-36617.rs:7:1
|
LL | #![test_case]
| ^^^^^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[test_case]
| ~~~~~~~~~~~~
LL - #![test_case]
LL + #[test_case]
|
error: `bench` attribute cannot be used at crate level
--> $DIR/issue-36617.rs:10:1
|
LL | #![bench]
| ^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[bench]
| ~~~~~~~~
LL - #![bench]
LL + #[bench]
|
error: `global_allocator` attribute cannot be used at crate level
--> $DIR/issue-36617.rs:13:1
|
LL | #![global_allocator]
| ^^^^^^^^^^^^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[global_allocator]
| ~~~~~~~~~~~~~~~~~~~
LL - #![global_allocator]
LL + #[global_allocator]
|
error: aborting due to 10 previous errors

6
tests/ui/feature-gates/issue-43106-gating-of-bench.stderr
View file

@ -11,10 +11,14 @@ error: `bench` attribute cannot be used at crate level
|
LL | #![bench = "4100"]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[bench = "4100"]
LL - #![bench = "4100"]
LL + #[bench = "4100"]
|
error: aborting due to 2 previous errors

6
tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.rs
View file

@ -32,6 +32,12 @@
//~^ ERROR attribute should be applied to function or closure
mod inline {
//~^ NOTE not a function or closure
//~| NOTE the inner attribute doesn't annotate this module
//~| NOTE the inner attribute doesn't annotate this module
//~| NOTE the inner attribute doesn't annotate this module
//~| NOTE the inner attribute doesn't annotate this module
//~| NOTE the inner attribute doesn't annotate this module
//~| NOTE the inner attribute doesn't annotate this module
mod inner { #![inline] }
//~^ ERROR attribute should be applied to function or closure

96
tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs-error.stderr
View file

@ -7,7 +7,7 @@ LL | #![rustc_main]
= help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
error: attribute must be of the form `#[inline]` or `#[inline(always|never)]`
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:40:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:46:5
|
LL | #[inline = "2100"] fn f() { }
| ^^^^^^^^^^^^^^^^^^
@ -17,31 +17,31 @@ LL | #[inline = "2100"] fn f() { }
= note: `#[deny(ill_formed_attribute_input)]` on by default
error: `start` attribute can only be used on functions
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:119:1
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:125:1
|
LL | #[start]
| ^^^^^^^^
error: `start` attribute can only be used on functions
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:122:17
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:128:17
|
LL | mod inner { #![start] }
| ^^^^^^^^^
error: `start` attribute can only be used on functions
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:127:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:133:5
|
LL | #[start] struct S;
| ^^^^^^^^
error: `start` attribute can only be used on functions
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:130:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:136:5
|
LL | #[start] type T = S;
| ^^^^^^^^
error: `start` attribute can only be used on functions
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:133:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:139:5
|
LL | #[start] impl S { }
| ^^^^^^^^
@ -55,14 +55,14 @@ LL |
LL | / mod inline {
LL | |
LL | |
LL | | mod inner { #![inline] }
LL | |
... |
LL | |
LL | | }
| |_- not a function or closure
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:59:1
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:65:1
|
LL | #[no_link]
| ^^^^^^^^^^
@ -77,7 +77,7 @@ LL | | }
| |_- not an `extern crate` item
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:85:1
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:91:1
|
LL | #[export_name = "2200"]
| ^^^^^^^^^^^^^^^^^^^^^^^
@ -92,7 +92,7 @@ LL | | }
| |_- not a free function, impl method or static
error[E0517]: attribute should be applied to a struct, enum, or union
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:137:8
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:143:8
|
LL | #[repr(C)]
| ^
@ -129,10 +129,14 @@ error: `macro_export` attribute cannot be used at crate level
|
LL | #![macro_export]
| ^^^^^^^^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[macro_export]
LL - #![macro_export]
LL + #[macro_export]
|
error: `rustc_main` attribute cannot be used at crate level
@ -140,21 +144,29 @@ error: `rustc_main` attribute cannot be used at crate level
|
LL | #![rustc_main]
| ^^^^^^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[rustc_main]
| ~~~~~~~~~~~~~
LL - #![rustc_main]
LL + #[rustc_main]
|
error: `start` attribute cannot be used at crate level
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:16:1
|
LL | #![start]
| ^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[start]
LL - #![start]
LL + #[start]
|
error: `repr` attribute cannot be used at crate level
@ -162,10 +174,14 @@ error: `repr` attribute cannot be used at crate level
|
LL | #![repr()]
| ^^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[repr()]
LL - #![repr()]
LL + #[repr()]
|
error: `path` attribute cannot be used at crate level
@ -173,10 +189,14 @@ error: `path` attribute cannot be used at crate level
|
LL | #![path = "3800"]
| ^^^^^^^^^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[path = "3800"]
LL - #![path = "3800"]
LL + #[path = "3800"]
|
error: `automatically_derived` attribute cannot be used at crate level
@ -184,122 +204,126 @@ error: `automatically_derived` attribute cannot be used at crate level
|
LL | #![automatically_derived]
| ^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL | mod inline {
| ------ the inner attribute doesn't annotate this module
|
help: perhaps you meant to use an outer attribute
|
LL | #[automatically_derived]
LL - #![automatically_derived]
LL + #[automatically_derived]
|
error[E0518]: attribute should be applied to function or closure
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:36:17
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:42:17
|
LL | mod inner { #![inline] }
| ------------^^^^^^^^^^-- not a function or closure
error[E0518]: attribute should be applied to function or closure
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:46:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:52:5
|
LL | #[inline] struct S;
| ^^^^^^^^^ --------- not a function or closure
error[E0518]: attribute should be applied to function or closure
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:50:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:56:5
|
LL | #[inline] type T = S;
| ^^^^^^^^^ ----------- not a function or closure
error[E0518]: attribute should be applied to function or closure
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:54:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:60:5
|
LL | #[inline] impl S { }
| ^^^^^^^^^ ---------- not a function or closure
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:64:17
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:70:17
|
LL | mod inner { #![no_link] }
| ------------^^^^^^^^^^^-- not an `extern crate` item
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:68:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:74:5
|
LL | #[no_link] fn f() { }
| ^^^^^^^^^^ ---------- not an `extern crate` item
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:72:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:78:5
|
LL | #[no_link] struct S;
| ^^^^^^^^^^ --------- not an `extern crate` item
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:76:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:82:5
|
LL | #[no_link]type T = S;
| ^^^^^^^^^^----------- not an `extern crate` item
error: attribute should be applied to an `extern crate` item
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:80:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:86:5
|
LL | #[no_link] impl S { }
| ^^^^^^^^^^ ---------- not an `extern crate` item
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:90:17
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:96:17
|
LL | mod inner { #![export_name="2200"] }
| ------------^^^^^^^^^^^^^^^^^^^^^^-- not a free function, impl method or static
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:96:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:102:5
|
LL | #[export_name = "2200"] struct S;
| ^^^^^^^^^^^^^^^^^^^^^^^ --------- not a free function, impl method or static
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:100:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:106:5
|
LL | #[export_name = "2200"] type T = S;
| ^^^^^^^^^^^^^^^^^^^^^^^ ----------- not a free function, impl method or static
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:104:5
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:110:5
|
LL | #[export_name = "2200"] impl S { }
| ^^^^^^^^^^^^^^^^^^^^^^^ ---------- not a free function, impl method or static
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:109:9
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:115:9
|
LL | #[export_name = "2200"] fn foo();
| ^^^^^^^^^^^^^^^^^^^^^^^ --------- not a free function, impl method or static
error: attribute should be applied to a free function, impl method or static
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:113:9
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:119:9
|
LL | #[export_name = "2200"] fn bar() {}
| ^^^^^^^^^^^^^^^^^^^^^^^ ----------- not a free function, impl method or static
error[E0517]: attribute should be applied to a struct, enum, or union
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:141:25
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:147:25
|
LL | mod inner { #![repr(C)] }
| --------------------^---- not a struct, enum, or union
error[E0517]: attribute should be applied to a struct, enum, or union
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:145:12
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:151:12
|
LL | #[repr(C)] fn f() { }
| ^ ---------- not a struct, enum, or union
error[E0517]: attribute should be applied to a struct, enum, or union
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:151:12
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:157:12
|
LL | #[repr(C)] type T = S;
| ^ ----------- not a struct, enum, or union
error[E0517]: attribute should be applied to a struct, enum, or union
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:155:12
--> $DIR/issue-43106-gating-of-builtin-attrs-error.rs:161:12
|
LL | #[repr(C)] impl S { }
| ^ ---------- not a struct, enum, or union

6
tests/ui/feature-gates/issue-43106-gating-of-test.stderr
View file

@ -11,10 +11,14 @@ error: `test` attribute cannot be used at crate level
|
LL | #![test = "4200"]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL | fn main() {}
| ---- the inner attribute doesn't annotate this function
|
help: perhaps you meant to use an outer attribute
|
LL | #[test = "4200"]
LL - #![test = "4200"]
LL + #[test = "4200"]
|
error: aborting due to 2 previous errors

5
tests/ui/imports/issue-28134.stderr
View file

@ -14,8 +14,9 @@ LL | #![test]
|
help: perhaps you meant to use an outer attribute
|
LL | #[test]
| ~~~~~~~
LL - #![test]
LL + #[test]
|
error: aborting due to 2 previous errors

8
tests/ui/span/issue-43927-non-ADT-derive.stderr
View file

@ -11,11 +11,15 @@ error: `derive` attribute cannot be used at crate level
|
LL | #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
...
LL | struct DerivedOn;
| --------- the inner attribute doesn't annotate this struct
|
help: perhaps you meant to use an outer attribute
|
LL | #[derive(Debug, PartialEq, Eq)] // should be an outer attribute!
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LL - #![derive(Debug, PartialEq, Eq)] // should be an outer attribute!
LL + #[derive(Debug, PartialEq, Eq)] // should be an outer attribute!
|
error: aborting due to 2 previous errors