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Rollup merge of #117420 - Jules-Bertholet:internal-unstable-stmt-expr-attributes, r=petrochenkov 

Make `#![allow_internal_unstable(..)]` work with `stmt_expr_attributes`

This is a necessary first step to fixing #117304, as explained in https://github.com/rust-lang/rust/issues/117304#issuecomment-1784414453.

`@rustbot` label T-compiler
This commit is contained in:
Matthias Krüger 2024-01-26 14:43:29 +01:00 committed by GitHub
parent 1fc46f3a8f 42b1406d9e
commit 4808aa8872
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GPG Key ID: B5690EEEBB952194
3 changed files with 17 additions and 5 deletions
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4
compiler/rustc_expand/src/config.rs
View File

@ -373,7 +373,9 @@ impl<'a> StripUnconfigured<'a> {
/// If attributes are not allowed on expressions, emit an error for `attr`
#[instrument(level = "trace", skip(self))]
pub(crate) fn maybe_emit_expr_attr_err(&self, attr: &Attribute) {
if self.features.is_some_and(|features| !features.stmt_expr_attributes) {
if self.features.is_some_and(|features| !features.stmt_expr_attributes)
&& !attr.span.allows_unstable(sym::stmt_expr_attributes)
{
let mut err = feature_err(
&self.sess,
sym::stmt_expr_attributes,

10
tests/ui/internal/internal-unstable.rs
View File

@ -28,6 +28,14 @@ macro_rules! bar {
}}
}
#[allow_internal_unstable(stmt_expr_attributes)]
macro_rules! internal_attr {
($e: expr) => {
#[allow(overflowing_literals)]
$e
}
}
fn main() {
// ok, the instability is contained.
call_unstable_allow!();
@ -51,4 +59,6 @@ fn main() {
#[allow_internal_unstable]
_ => {}
}
assert_eq!(internal_attr!(1e100_f32), f32::INFINITY);
}

8
tests/ui/internal/internal-unstable.stderr
View File

@ -1,5 +1,5 @@
error[E0658]: use of unstable library feature 'function'
--> $DIR/internal-unstable.rs:40:25
--> $DIR/internal-unstable.rs:48:25
|
LL | pass_through_allow!(internal_unstable::unstable());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -8,7 +8,7 @@ LL | pass_through_allow!(internal_unstable::unstable());
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: use of unstable library feature 'function'
--> $DIR/internal-unstable.rs:42:27
--> $DIR/internal-unstable.rs:50:27
|
LL | pass_through_noallow!(internal_unstable::unstable());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -17,7 +17,7 @@ LL | pass_through_noallow!(internal_unstable::unstable());
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: use of unstable library feature 'function'
--> $DIR/internal-unstable.rs:46:22
--> $DIR/internal-unstable.rs:54:22
|
LL | println!("{:?}", internal_unstable::unstable());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -26,7 +26,7 @@ LL | println!("{:?}", internal_unstable::unstable());
= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
error[E0658]: use of unstable library feature 'function'
--> $DIR/internal-unstable.rs:48:10
--> $DIR/internal-unstable.rs:56:10
|
LL | bar!(internal_unstable::unstable());
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^