Auto merge of #64313 - Centril:rollup-7w8b67g, r=Centril

Rollup of 5 pull requests

Successful merges:

 - #63468 (Resolve attributes in several places)
 - #64121 (Override `StepBy::{try_fold, try_rfold}`)
 - #64278 (check git in bootstrap.py)
 - #64306 (Fix typo in config.toml.example)
 - #64312 (Unify escape usage)

Failed merges:

r? @ghost

6 files changed, 30 insertions, 5 deletions

diff --git a/src/libsyntax/parse/diagnostics.rs b/src/libsyntax/parse/diagnostics.rs
index 3120d0e3517..b74f2492c35 100644
--- a/src/libsyntax/parse/diagnostics.rs
+++ b/src/libsyntax/parse/diagnostics.rs
@@ -29,7 +29,14 @@ crate fn dummy_arg(ident: Ident) -> Param {
         span: ident.span,
         id: ast::DUMMY_NODE_ID
     };
-    Param { attrs: ThinVec::default(), id: ast::DUMMY_NODE_ID, pat, span: ident.span, ty: P(ty) }
+    Param {
+        attrs: ThinVec::default(),
+        id: ast::DUMMY_NODE_ID,
+        pat,
+        span: ident.span,
+        ty: P(ty),
+        is_placeholder: false,
+    }
 }
 
 pub enum Error {
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index fcaf5065dac..fcebfa29962 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -1040,7 +1040,14 @@ impl<'a> Parser<'a> {
 
         let span = lo.to(self.token.span);
 
-        Ok(Param { attrs: attrs.into(), id: DUMMY_NODE_ID, pat, span, ty })
+        Ok(Param {
+            attrs: attrs.into(),
+            id: ast::DUMMY_NODE_ID,
+            is_placeholder: false,
+            pat,
+            span,
+            ty,
+        })
     }
 
     /// Parses mutability (`mut` or nothing).
diff --git a/src/libsyntax/parse/parser/expr.rs b/src/libsyntax/parse/parser/expr.rs
index 4dbb5ff75eb..31b28443abb 100644
--- a/src/libsyntax/parse/parser/expr.rs
+++ b/src/libsyntax/parse/parser/expr.rs
@@ -1193,7 +1193,8 @@ impl<'a> Parser<'a> {
             ty: t,
             pat,
             span,
-            id: DUMMY_NODE_ID
+            id: DUMMY_NODE_ID,
+            is_placeholder: false,
         })
     }
 
@@ -1455,6 +1456,7 @@ impl<'a> Parser<'a> {
             body: expr,
             span: lo.to(hi),
             id: DUMMY_NODE_ID,
+            is_placeholder: false,
         })
     }
 
@@ -1611,6 +1613,7 @@ impl<'a> Parser<'a> {
                         is_shorthand: false,
                         attrs: ThinVec::new(),
                         id: DUMMY_NODE_ID,
+                        is_placeholder: false,
                     });
                 }
             }
@@ -1697,6 +1700,7 @@ impl<'a> Parser<'a> {
             is_shorthand,
             attrs: attrs.into(),
             id: DUMMY_NODE_ID,
+            is_placeholder: false,
         })
     }
 
diff --git a/src/libsyntax/parse/parser/generics.rs b/src/libsyntax/parse/parser/generics.rs
index 54f24f8ef2b..3e6118ad86f 100644
--- a/src/libsyntax/parse/parser/generics.rs
+++ b/src/libsyntax/parse/parser/generics.rs
@@ -49,7 +49,8 @@ impl<'a> Parser<'a> {
             bounds,
             kind: GenericParamKind::Type {
                 default,
-            }
+            },
+            is_placeholder: false
         })
     }
 
@@ -66,7 +67,8 @@ impl<'a> Parser<'a> {
             bounds: Vec::new(),
             kind: GenericParamKind::Const {
                 ty,
-            }
+            },
+            is_placeholder: false
         })
     }
 
@@ -90,6 +92,7 @@ impl<'a> Parser<'a> {
                     attrs: attrs.into(),
                     bounds,
                     kind: ast::GenericParamKind::Lifetime,
+                    is_placeholder: false
                 });
             } else if self.check_keyword(kw::Const) {
                 // Parse const parameter.
diff --git a/src/libsyntax/parse/parser/item.rs b/src/libsyntax/parse/parser/item.rs
index be7fc48fdaf..baae6155f34 100644
--- a/src/libsyntax/parse/parser/item.rs
+++ b/src/libsyntax/parse/parser/item.rs
@@ -1575,6 +1575,7 @@ impl<'a> Parser<'a> {
                 data: struct_def,
                 disr_expr,
                 span: vlo.to(self.prev_span),
+                is_placeholder: false,
             };
             variants.push(vr);
 
@@ -1730,6 +1731,7 @@ impl<'a> Parser<'a> {
                 id: DUMMY_NODE_ID,
                 ty,
                 attrs,
+                is_placeholder: false,
             })
         }).map(|(r, _)| r)
     }
@@ -1821,6 +1823,7 @@ impl<'a> Parser<'a> {
             id: DUMMY_NODE_ID,
             ty,
             attrs,
+            is_placeholder: false,
         })
     }
 
diff --git a/src/libsyntax/parse/parser/pat.rs b/src/libsyntax/parse/parser/pat.rs
index 49f8d58c6a7..08ee3a6bd86 100644
--- a/src/libsyntax/parse/parser/pat.rs
+++ b/src/libsyntax/parse/parser/pat.rs
@@ -882,6 +882,7 @@ impl<'a> Parser<'a> {
             attrs: attrs.into(),
             id: ast::DUMMY_NODE_ID,
             span: lo.to(hi),
+            is_placeholder: false,
         })
     }