2 files changed, 22 insertions, 1 deletions
diff --git a/compiler/rustc_attr_data_structures/src/attributes.rs b/compiler/rustc_attr_data_structures/src/attributes.rs
index 8986bec57de..def6b16ee8a 100644
--- a/compiler/rustc_attr_data_structures/src/attributes.rs
+++ b/compiler/rustc_attr_data_structures/src/attributes.rs
@@ -11,6 +11,22 @@ pub enum InlineAttr {
     Hint,
     Always,
     Never,
+    /// `#[rustc_force_inline]` forces inlining to happen in the MIR inliner - it reports an error
+    /// if the inlining cannot happen. It is limited to only free functions so that the calls
+    /// can always be resolved.
+    Force {
+        attr_span: Span,
+        reason: Option<Symbol>,
+    },
+}
+
+impl InlineAttr {
+    pub fn always(&self) -> bool {
+        match self {
+            InlineAttr::Always | InlineAttr::Force { .. } => true,
+            InlineAttr::None | InlineAttr::Hint | InlineAttr::Never => false,
+        }
+    }
 }
 
 #[derive(Clone, Encodable, Decodable, Debug, PartialEq, Eq, HashStable_Generic)]
diff --git a/compiler/rustc_attr_data_structures/src/stability.rs b/compiler/rustc_attr_data_structures/src/stability.rs
index 021fe40e3e0..3c77d4c766c 100644
--- a/compiler/rustc_attr_data_structures/src/stability.rs
+++ b/compiler/rustc_attr_data_structures/src/stability.rs
@@ -9,7 +9,12 @@ use crate::RustcVersion;
 /// `since` field of the `#[stable]` attribute.
 ///
 /// For more, see [this pull request](https://github.com/rust-lang/rust/pull/100591).
-pub const VERSION_PLACEHOLDER: &str = "CURRENT_RUSTC_VERSION";
+pub const VERSION_PLACEHOLDER: &str = concat!("CURRENT_RUSTC_VERSIO", "N");
+// Note that the `concat!` macro above prevents `src/tools/replace-version-placeholder` from
+// replacing the constant with the current version. Hardcoding the tool to skip this file doesn't
+// work as the file can (and at some point will) be moved around.
+//
+// Turning the `concat!` macro into a string literal will make Pietro cry. That'd be sad :(
 
 /// Represents the following attributes:
 ///