Rollup of 6 pull requests

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -336,6 +336,7 @@ fn link_rlib<'a, B: ArchiveBuilder<'a>>(
             | NativeLibKind::Dylib { .. }
             | NativeLibKind::Framework { .. }
             | NativeLibKind::RawDylib
+            | NativeLibKind::LinkArg
             | NativeLibKind::Unspecified => continue,
         }
         if let Some(name) = lib.name {
@@ -1289,6 +1290,7 @@ fn print_native_static_libs(sess: &Session, all_native_libs: &[NativeLib]) {
                 }
                 // These are included, no need to print them
                 NativeLibKind::Static { bundle: None | Some(true), .. }
+                | NativeLibKind::LinkArg
                 | NativeLibKind::RawDylib => None,
             }
         })
@@ -2243,6 +2245,9 @@ fn add_local_native_libraries(
             NativeLibKind::RawDylib => {
                 // Ignore RawDylib here, they are handled separately in linker_with_args().
             }
+            NativeLibKind::LinkArg => {
+                cmd.arg(name);
+            }
         }
     }
 }
@@ -2380,19 +2385,34 @@ fn add_upstream_rust_crates<'a, B: ArchiveBuilder<'a>>(
                             (lib.name, lib.kind, lib.verbatim)
                         };
 
-                        if let NativeLibKind::Static { bundle: Some(false), whole_archive } =
-                            lib.kind
-                        {
-                            let verbatim = lib.verbatim.unwrap_or(false);
-                            if whole_archive == Some(true) {
+                        match lib.kind {
+                            NativeLibKind::Static {
+                                bundle: Some(false),
+                                whole_archive: Some(true),
+                            } => {
                                 cmd.link_whole_staticlib(
                                     name,
-                                    verbatim,
+                                    lib.verbatim.unwrap_or(false),
                                     search_path.get_or_init(|| archive_search_paths(sess)),
                                 );
-                            } else {
-                                cmd.link_staticlib(name, verbatim);
                             }
+                            NativeLibKind::Static {
+                                bundle: Some(false),
+                                whole_archive: Some(false) | None,
+                            } => {
+                                cmd.link_staticlib(name, lib.verbatim.unwrap_or(false));
+                            }
+                            NativeLibKind::LinkArg => {
+                                cmd.arg(name);
+                            }
+                            NativeLibKind::Dylib { .. }
+                            | NativeLibKind::Framework { .. }
+                            | NativeLibKind::Unspecified
+                            | NativeLibKind::RawDylib => {}
+                            NativeLibKind::Static {
+                                bundle: Some(true) | None,
+                                whole_archive: _,
+                            } => {}
                         }
                     }
                 }
@@ -2583,7 +2603,7 @@ fn add_upstream_native_libraries(
                 // already included them in add_local_native_libraries and
                 // add_upstream_rust_crates
                 NativeLibKind::Static { .. } => {}
-                NativeLibKind::RawDylib => {}
+                NativeLibKind::RawDylib | NativeLibKind::LinkArg => {}
             }
         }
     }

compiler/rustc_metadata/src/rmeta/decoder.rs

@@ -83,7 +83,7 @@ pub(crate) struct CrateMetadata {
 
     // --- Some data pre-decoded from the metadata blob, usually for performance ---
     /// NOTE(eddyb) we pass `'static` to a `'tcx` parameter because this
-    /// lifetime is only used behind `Lazy`, and therefore acts like a
+    /// lifetime is only used behind `LazyValue`, `LazyArray`, or `LazyTable`, and therefore acts like a
     /// universal (`for<'tcx>`), that is paired up with whichever `TyCtxt`
     /// is being used to decode those values.
     root: CrateRoot,

compiler/rustc_metadata/src/rmeta/mod.rs

@@ -66,13 +66,13 @@ pub const METADATA_HEADER: &[u8] = &[b'r', b'u', b's', b't', 0, 0, 0, METADATA_V
 ///
 /// Metadata is effective a tree, encoded in post-order,
 /// and with the root's position written next to the header.
-/// That means every single `Lazy` points to some previous
+/// That means every single `LazyValue` points to some previous
 /// location in the metadata and is part of a larger node.
 ///
-/// The first `Lazy` in a node is encoded as the backwards
+/// The first `LazyValue` in a node is encoded as the backwards
 /// distance from the position where the containing node
-/// starts and where the `Lazy` points to, while the rest
-/// use the forward distance from the previous `Lazy`.
+/// starts and where the `LazyValue` points to, while the rest
+/// use the forward distance from the previous `LazyValue`.
 /// Distances start at 1, as 0-byte nodes are invalid.
 /// Also invalid are nodes being referred in a different
 /// order than they were encoded in.
@@ -94,12 +94,12 @@ impl<T> LazyValue<T> {
 
 /// A list of lazily-decoded values.
 ///
-/// Unlike `Lazy<Vec<T>>`, the length is encoded next to the
+/// Unlike `LazyValue<Vec<T>>`, the length is encoded next to the
 /// position, not at the position, which means that the length
 /// doesn't need to be known before encoding all the elements.
 ///
 /// If the length is 0, no position is encoded, but otherwise,
-/// the encoding is that of `Lazy`, with the distinction that
+/// the encoding is that of `LazyArray`, with the distinction that
 /// the minimal distance the length of the sequence, i.e.
 /// it's assumed there's no 0-byte element in the sequence.
 struct LazyArray<T> {
@@ -167,17 +167,17 @@ impl<I, T> Clone for LazyTable<I, T> {
     }
 }
 
-/// Encoding / decoding state for `Lazy`.
+/// Encoding / decoding state for `Lazy`s (`LazyValue`, `LazyArray`, and `LazyTable`).
 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
 enum LazyState {
     /// Outside of a metadata node.
     NoNode,
 
-    /// Inside a metadata node, and before any `Lazy`.
+    /// Inside a metadata node, and before any `Lazy`s.
     /// The position is that of the node itself.
     NodeStart(NonZeroUsize),
 
-    /// Inside a metadata node, with a previous `Lazy`.
+    /// Inside a metadata node, with a previous `Lazy`s.
     /// The position is where that previous `Lazy` would start.
     Previous(NonZeroUsize),
 }

compiler/rustc_metadata/src/rmeta/table.rs

@@ -141,7 +141,7 @@ fixed_size_enum! {
     }
 }
 
-// We directly encode `DefPathHash` because a `Lazy` would encur a 25% cost.
+// We directly encode `DefPathHash` because a `LazyValue` would incur a 25% cost.
 impl FixedSizeEncoding for Option<DefPathHash> {
     type ByteArray = [u8; 16];
 
@@ -159,7 +159,7 @@ impl FixedSizeEncoding for Option<DefPathHash> {
     }
 }
 
-// We directly encode RawDefId because using a `Lazy` would incur a 50% overhead in the worst case.
+// We directly encode RawDefId because using a `LazyValue` would incur a 50% overhead in the worst case.
 impl FixedSizeEncoding for Option<RawDefId> {
     type ByteArray = [u8; 8];
 

compiler/rustc_session/src/config.rs

@@ -1944,9 +1944,22 @@ fn parse_native_lib_kind(
         "static" => NativeLibKind::Static { bundle: None, whole_archive: None },
         "dylib" => NativeLibKind::Dylib { as_needed: None },
         "framework" => NativeLibKind::Framework { as_needed: None },
+        "link-arg" => {
+            if !nightly_options::is_unstable_enabled(matches) {
+                let why = if nightly_options::match_is_nightly_build(matches) {
+                    " and only accepted on the nightly compiler"
+                } else {
+                    ", the `-Z unstable-options` flag must also be passed to use it"
+                };
+                early_error(error_format, &format!("library kind `link-arg` is unstable{why}"))
+            }
+            NativeLibKind::LinkArg
+        }
         _ => early_error(
             error_format,
-            &format!("unknown library kind `{kind}`, expected one of: static, dylib, framework"),
+            &format!(
+                "unknown library kind `{kind}`, expected one of: static, dylib, framework, link-arg"
+            ),
         ),
     };
     match modifiers {
@@ -2045,7 +2058,7 @@ fn parse_libs(matches: &getopts::Matches, error_format: ErrorOutputType) -> Vec<
         .into_iter()
         .map(|s| {
             // Parse string of the form "[KIND[:MODIFIERS]=]lib[:new_name]",
-            // where KIND is one of "dylib", "framework", "static" and
+            // where KIND is one of "dylib", "framework", "static", "link-arg" and
             // where MODIFIERS are  a comma separated list of supported modifiers
             // (bundle, verbatim, whole-archive, as-needed). Each modifier is prefixed
             // with either + or - to indicate whether it is enabled or disabled.

compiler/rustc_session/src/utils.rs

@@ -34,6 +34,9 @@ pub enum NativeLibKind {
         /// Whether the framework will be linked only if it satisfies some undefined symbols
         as_needed: Option<bool>,
     },
+    /// Argument which is passed to linker, relative order with libraries and other arguments
+    /// is preserved
+    LinkArg,
     /// The library kind wasn't specified, `Dylib` is currently used as a default.
     Unspecified,
 }
@@ -47,7 +50,7 @@ impl NativeLibKind {
             NativeLibKind::Dylib { as_needed } | NativeLibKind::Framework { as_needed } => {
                 as_needed.is_some()
             }
-            NativeLibKind::RawDylib | NativeLibKind::Unspecified => false,
+            NativeLibKind::RawDylib | NativeLibKind::Unspecified | NativeLibKind::LinkArg => false,
         }
     }
 }

library/std/src/os/fd/raw.rs

@@ -14,6 +14,7 @@ use crate::os::wasi::io::OwnedFd;
 use crate::sys_common::{AsInner, IntoInner};
 
 /// Raw file descriptors.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub type RawFd = raw::c_int;
 
@@ -22,6 +23,7 @@ pub type RawFd = raw::c_int;
 /// This is only available on unix and WASI platforms and must be imported in
 /// order to call the method. Windows platforms have a corresponding
 /// `AsRawHandle` and `AsRawSocket` set of traits.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait AsRawFd {
     /// Extracts the raw file descriptor.
@@ -57,6 +59,7 @@ pub trait AsRawFd {
 
 /// A trait to express the ability to construct an object from a raw file
 /// descriptor.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
 #[stable(feature = "from_raw_os", since = "1.1.0")]
 pub trait FromRawFd {
     /// Constructs a new instance of `Self` from the given raw file
@@ -100,6 +103,7 @@ pub trait FromRawFd {
 
 /// A trait to express the ability to consume an object and acquire ownership of
 /// its raw file descriptor.
+#[cfg_attr(not(bootstrap), rustc_allowed_through_unstable_modules)]
 #[stable(feature = "into_raw_os", since = "1.4.0")]
 pub trait IntoRawFd {
     /// Consumes this object, returning the raw underlying file descriptor.

library/std/src/os/wasi/io/raw.rs

@@ -2,4 +2,19 @@
 
 #![unstable(feature = "wasi_ext", issue = "71213")]
 
+// NOTE: despite the fact that this module is unstable,
+// stable Rust had the capability to access the stable
+// re-exported items from os::fd::raw through this
+// unstable module.
+// In PR #95956 the stability checker was changed to check
+// all path segments of an item rather than just the last,
+// which caused the aforementioned stable usage to regress
+// (see issue #99502).
+// As a result, the items in os::fd::raw were given the
+// rustc_allowed_through_unstable_modules attribute.
+// No regression tests were added to ensure this property,
+// as CI is not configured to test wasm32-wasi.
+// If this module is stabilized,
+// you may want to remove those attributes
+// (assuming no other unstable modules need them).
 pub use crate::os::fd::raw::*;

src/doc/rustc/src/SUMMARY.md

@@ -28,6 +28,7 @@
     - [riscv32imac-unknown-xous-elf](platform-support/riscv32imac-unknown-xous-elf.md)
     - [*-pc-windows-gnullvm](platform-support/pc-windows-gnullvm.md)
     - [*-unknown-openbsd](platform-support/openbsd.md)
+    - [\*-unknown-uefi](platform-support/unknown-uefi.md)
     - [wasm64-unknown-unknown](platform-support/wasm64-unknown-unknown.md)
     - [x86_64-unknown-none](platform-support/x86_64-unknown-none.md)
 - [Targets](targets/index.md)