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authorBastian Kersting <bkersting@google.com>2025-06-18 12:53:34 +0000
committerBastian Kersting <bkersting@google.com>2025-08-18 08:30:00 +0000
commit3ef065bf872ce62a18336dca0daf47b3e9f7da64 (patch)
treeb4dccd0b519642cac3b2f057995f5b378c8abc01 /compiler/rustc_feature
parent425a9c0a0e365c0b8c6cfd00c2ded83a73bed9a0 (diff)
downloadrust-3ef065bf872ce62a18336dca0daf47b3e9f7da64.tar.gz
rust-3ef065bf872ce62a18336dca0daf47b3e9f7da64.zip
Implement the #[sanitize(..)] attribute
This change implements the #[sanitize(..)] attribute, which opts to
replace the currently unstable #[no_sanitize]. Essentially the new
attribute works similar as #[no_sanitize], just with more flexible
options regarding where it is applied. E.g. it is possible to turn
a certain sanitizer either on or off:
`#[sanitize(address = "on|off")]`

This attribute now also applies to more places, e.g. it is possible
to turn off a sanitizer for an entire module or impl block:
```rust
\#[sanitize(address = "off")]
mod foo {
    fn unsanitized(..) {}

    #[sanitize(address = "on")]
    fn sanitized(..) {}
}

\#[sanitize(thread = "off")]
impl MyTrait for () {
    ...
}
```

This attribute is enabled behind the unstable `sanitize` feature.
Diffstat (limited to 'compiler/rustc_feature')
-rw-r--r--compiler/rustc_feature/src/builtin_attrs.rs4
-rw-r--r--compiler/rustc_feature/src/unstable.rs2
2 files changed, 6 insertions, 0 deletions
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs
index 6fbedaf5b10..14fbf12f150 100644
--- a/compiler/rustc_feature/src/builtin_attrs.rs
+++ b/compiler/rustc_feature/src/builtin_attrs.rs
@@ -746,6 +746,10 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[
         EncodeCrossCrate::No, experimental!(no_sanitize)
     ),
     gated!(
+        sanitize, Normal, template!(List: &[r#"address = "on|off""#, r#"kernel_address = "on|off""#, r#"cfi = "on|off""#, r#"hwaddress = "on|off""#, r#"kcfi = "on|off""#, r#"memory = "on|off""#, r#"memtag = "on|off""#, r#"shadow_call_stack = "on|off""#, r#"thread = "on|off""#]), ErrorPreceding,
+        EncodeCrossCrate::No, sanitize, experimental!(sanitize),
+    ),
+    gated!(
         coverage, Normal, template!(OneOf: &[sym::off, sym::on]),
         ErrorPreceding, EncodeCrossCrate::No,
         coverage_attribute, experimental!(coverage)
diff --git a/compiler/rustc_feature/src/unstable.rs b/compiler/rustc_feature/src/unstable.rs
index 07f928b8c88..4fb4b7fc8b7 100644
--- a/compiler/rustc_feature/src/unstable.rs
+++ b/compiler/rustc_feature/src/unstable.rs
@@ -626,6 +626,8 @@ declare_features! (
     (unstable, return_type_notation, "1.70.0", Some(109417)),
     /// Allows `extern "rust-cold"`.
     (unstable, rust_cold_cc, "1.63.0", Some(97544)),
+    /// Allows the use of the `sanitize` attribute.
+    (unstable, sanitize, "CURRENT_RUSTC_VERSION", Some(39699)),
     /// Allows the use of SIMD types in functions declared in `extern` blocks.
     (unstable, simd_ffi, "1.0.0", Some(27731)),
     /// Allows specialization of implementations (RFC 1210).