Auto merge of rust-lang#76231 - tmandry:rollup-ilvs9fq, r=tmandry

Rollup of 14 pull requests

Successful merges:

 - rust-lang#74880 (Add trailing comma support to matches macro)
 - rust-lang#76074 (Add new `-Z dump-mir-spanview` option)
 - rust-lang#76088 (Add more examples to lexicographic cmp on Iterators.)
 - rust-lang#76099 (Add info about `!` and `impl Trait`)
 - rust-lang#76126 (Use "Fira Sans" for crate list font)
 - rust-lang#76132 (Factor out StmtKind::MacCall fields into `MacCallStmt` struct)
 - rust-lang#76143 (Give a better error message for duplicate built-in macros)
 - rust-lang#76158 (Stabilise link-self-contained option)
 - rust-lang#76201 (Move to intra-doc links for library/core/src/panic.rs)
 - rust-lang#76206 (Make all methods of `std::net::Ipv6Addr` const)
 - rust-lang#76207 (# Move to intra-doc links for library/core/src/clone.rs)
 - rust-lang#76212 (Document lint missing_doc_code_examples is nightly-only)
 - rust-lang#76218 (lexer: Tiny improvement to shebang detection)
 - rust-lang#76221 (Clean up header in `iter` docs for `for` loops)

Failed merges:

r? @ghost

Author: bors

compiler/rustc_ast/src/ast.rs

@@ -922,9 +922,13 @@ impl Stmt {
     pub fn add_trailing_semicolon(mut self) -> Self {
         self.kind = match self.kind {
             StmtKind::Expr(expr) => StmtKind::Semi(expr),
-            StmtKind::MacCall(mac) => StmtKind::MacCall(
-                mac.map(|(mac, _style, attrs)| (mac, MacStmtStyle::Semicolon, attrs)),
-            ),
+            StmtKind::MacCall(mac) => {
+                StmtKind::MacCall(mac.map(|MacCallStmt { mac, style: _, attrs }| MacCallStmt {
+                    mac,
+                    style: MacStmtStyle::Semicolon,
+                    attrs,
+                }))
+            }
             kind => kind,
         };
         self
@@ -958,7 +962,14 @@ pub enum StmtKind {
     /// Just a trailing semi-colon.
     Empty,
     /// Macro.
-    MacCall(P<(MacCall, MacStmtStyle, AttrVec)>),
+    MacCall(P<MacCallStmt>),
+}
+
+#[derive(Clone, Encodable, Decodable, Debug)]
+pub struct MacCallStmt {
+    pub mac: MacCall,
+    pub style: MacStmtStyle,
+    pub attrs: AttrVec,
 }
 
 #[derive(Clone, Copy, PartialEq, Encodable, Decodable, Debug)]

compiler/rustc_ast/src/attr/mod.rs

@@ -16,7 +16,6 @@ use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::Span;
 
 use std::iter;
-use std::ops::DerefMut;
 
 pub struct MarkedAttrs(GrowableBitSet<AttrId>);
 
@@ -634,10 +633,7 @@ impl HasAttrs for StmtKind {
             StmtKind::Local(ref local) => local.attrs(),
             StmtKind::Expr(ref expr) | StmtKind::Semi(ref expr) => expr.attrs(),
             StmtKind::Empty | StmtKind::Item(..) => &[],
-            StmtKind::MacCall(ref mac) => {
-                let (_, _, ref attrs) = **mac;
-                attrs.attrs()
-            }
+            StmtKind::MacCall(ref mac) => mac.attrs.attrs(),
         }
     }
 
@@ -647,8 +643,7 @@ impl HasAttrs for StmtKind {
             StmtKind::Expr(expr) | StmtKind::Semi(expr) => expr.visit_attrs(f),
             StmtKind::Empty | StmtKind::Item(..) => {}
             StmtKind::MacCall(mac) => {
-                let (_mac, _style, attrs) = mac.deref_mut();
-                attrs.visit_attrs(f);
+                mac.attrs.visit_attrs(f);
             }
         }
     }