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Make std::env::{set_var, remove_var} unsafe in edition 2024

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Allow calling these functions without `unsafe` blocks in editions up
until 2021, but don't trigger the `unused_unsafe` lint for `unsafe`
blocks containing these functions.

Fixes #27970.
Fixes #90308.
CC #124866.
This commit is contained in:
Tobias Bucher 2024-05-13 09:05:34 +02:00
parent e9b7aa08f7
commit 5d8f9b4dc1
18 changed files with 172 additions and 57 deletions
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6
compiler/rustc_feature/src/builtin_attrs.rs
View file

@ -578,6 +578,12 @@ pub const BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
"rustc_allowed_through_unstable_modules special cases accidental stabilizations of stable items \
through unstable paths"
),
rustc_attr!(
rustc_deprecated_safe_2024, Normal, template!(Word), WarnFollowing,
EncodeCrossCrate::Yes,
"rustc_deprecated_safe_2024 is supposed to be used in libstd only",
),
// ==========================================================================
// Internal attributes: Type system related: