Auto merge of #45513 - GuillaumeGomez:rollup, r=GuillaumeGomez

Rollup of 5 pull requests

- Successful merges: #45361, #45461, #45465, #45486, #45502
- Failed merges:

src/bootstrap/native.rs

@@ -446,6 +446,7 @@ impl Step for Openssl {
             "powerpc64-unknown-linux-gnu" => "linux-ppc64",
             "powerpc64le-unknown-linux-gnu" => "linux-ppc64le",
             "s390x-unknown-linux-gnu" => "linux64-s390x",
+            "sparc64-unknown-linux-gnu" => "linux64-sparcv9",
             "sparc64-unknown-netbsd" => "BSD-sparc64",
             "x86_64-apple-darwin" => "darwin64-x86_64-cc",
             "x86_64-linux-android" => "linux-x86_64",

src/libcore/intrinsics.rs

@@ -676,6 +676,10 @@ extern "rust-intrinsic" {
     pub fn min_align_of<T>() -> usize;
     pub fn pref_align_of<T>() -> usize;
 
+    /// The size of the referenced value in bytes.
+    ///
+    /// The stabilized version of this intrinsic is
+    /// [`std::mem::size_of_val`](../../std/mem/fn.size_of_val.html).
     pub fn size_of_val<T: ?Sized>(_: &T) -> usize;
     pub fn min_align_of_val<T: ?Sized>(_: &T) -> usize;
 
@@ -921,6 +925,9 @@ extern "rust-intrinsic" {
     ///
     /// If the actual type neither requires drop glue nor implements
     /// `Copy`, then may return `true` or `false`.
+    ///
+    /// The stabilized version of this intrinsic is
+    /// [`std::mem::needs_drop`](../../std/mem/fn.needs_drop.html).
     pub fn needs_drop<T>() -> bool;
 
     /// Calculates the offset from a pointer.

src/librustc_errors/diagnostic.rs

@@ -229,6 +229,7 @@ impl Diagnostic {
     /// "try adding parentheses: `(tup.0).1`"
     ///
     /// The message
+    ///
     /// * should not end in any punctuation (a `:` is added automatically)
     /// * should not be a question
     /// * should not contain any parts like "the following", "as shown"
@@ -248,6 +249,7 @@ impl Diagnostic {
         self
     }
 
+    /// Prints out a message with multiple suggested edits of the code.
     pub fn span_suggestions(&mut self, sp: Span, msg: &str, suggestions: Vec<String>) -> &mut Self {
         self.suggestions.push(CodeSuggestion {
             substitution_parts: vec![Substitution {

src/librustdoc/html/static/rustdoc.css

@@ -820,8 +820,8 @@ span.since {
 		width: 100%;
 	}
 
-	.content .out-of-band {
-		display: none;
+	.content h4 > .out-of-band {
+		position: inherit;
 	}
 
 	.toggle-wrapper > .collapse-toggle {
@@ -835,6 +835,10 @@ span.since {
 	#search {
 		margin-left: 0;
 	}
+
+	.content .impl-items .method, .content .impl-items > .type, .impl-items > .associatedconstant {
+		display: flex;
+	}
 }
 
 @media print {

src/libstd/os/linux/fs.rs

@@ -24,9 +24,25 @@ pub trait MetadataExt {
     /// Gain a reference to the underlying `stat` structure which contains
     /// the raw information returned by the OS.
     ///
-    /// The contents of the returned `stat` are **not** consistent across
+    /// The contents of the returned [`stat`] are **not** consistent across
     /// Unix platforms. The `os::unix::fs::MetadataExt` trait contains the
     /// cross-Unix abstractions contained within the raw stat.
+    ///
+    /// [`stat`]: ../../../../std/os/linux/raw/struct.stat.html
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// let stat = meta.as_raw_stat();
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext", since = "1.1.0")]
     #[rustc_deprecated(since = "1.8.0",
                        reason = "deprecated in favor of the accessor \
@@ -35,54 +51,278 @@ pub trait MetadataExt {
     fn as_raw_stat(&self) -> &raw::stat;
 
     /// Returns the device ID on which this file resides.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_dev());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_dev(&self) -> u64;
     /// Returns the inode number.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_ino());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_ino(&self) -> u64;
     /// Returns the file type and mode.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_mode());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_mode(&self) -> u32;
     /// Returns the number of hard links to file.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_nlink());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_nlink(&self) -> u64;
     /// Returns the user ID of the file owner.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_uid());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_uid(&self) -> u32;
     /// Returns the group ID of the file owner.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_gid());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_gid(&self) -> u32;
     /// Returns the device ID that this file represents. Only relevant for special file.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_rdev());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_rdev(&self) -> u64;
     /// Returns the size of the file (if it is a regular file or a symbolic link) in bytes.
     ///
     /// The size of a symbolic link is the length of the pathname it contains,
     /// without a terminating null byte.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_size());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_size(&self) -> u64;
     /// Returns the last access time.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_atime());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_atime(&self) -> i64;
     /// Returns the last access time, nano seconds part.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_atime_nsec());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_atime_nsec(&self) -> i64;
     /// Returns the last modification time.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_mtime());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_mtime(&self) -> i64;
     /// Returns the last modification time, nano seconds part.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_mtime_nsec());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_mtime_nsec(&self) -> i64;
     /// Returns the last status change time.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_ctime());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_ctime(&self) -> i64;
     /// Returns the last status change time, nano seconds part.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_ctime_nsec());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_ctime_nsec(&self) -> i64;
     /// Returns the "preferred" blocksize for efficient filesystem I/O.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_blksize());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_blksize(&self) -> u64;
     /// Returns the number of blocks allocated to the file, 512-byte units.
+    ///
+    /// # Examples
+    ///
+    /// ```
+    /// use std::fs;
+    /// use std::os::linux::fs::MetadataExt;
+    ///
+    /// # use std::io;
+    /// # fn f() -> io::Result<()> {
+    /// let meta = fs::metadata("some_file")?;
+    /// println!("{}", meta.st_blocks());
+    /// # Ok(())
+    /// # }
+    /// ```
     #[stable(feature = "metadata_ext2", since = "1.8.0")]
     fn st_blocks(&self) -> u64;
 }