Auto merge of #40091 - eddyb:rollup, r=eddyb

Rollup of 28 pull requests

- Successful merges: #39859, #39864, #39888, #39903, #39905, #39914, #39945, #39950, #39953, #39961, #39980, #39988, #39993, #39995, #40019, #40020, #40022, #40024, #40025, #40026, #40027, #40031, #40035, #40037, #40038, #40064, #40069, #40086
- Failed merges: #39927, #40008, #40047

2 files changed, 10 insertions, 4 deletions

diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index b61ab74687b..666e2205b4a 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -475,7 +475,7 @@ pub type BuiltinDeriveFn =
     for<'cx> fn(&'cx mut ExtCtxt, Span, &MetaItem, &Annotatable, &mut FnMut(Annotatable));
 
 /// Represents different kinds of macro invocations that can be resolved.
-#[derive(Clone, Copy, PartialEq, Eq)]
+#[derive(Clone, Copy, PartialEq, Eq, RustcEncodable, RustcDecodable, Hash, Debug)]
 pub enum MacroKind {
     /// A bang macro - foo!()
     Bang,
diff --git a/src/libsyntax/feature_gate.rs b/src/libsyntax/feature_gate.rs
index b7be084fa0b..c2b72edb66c 100644
--- a/src/libsyntax/feature_gate.rs
+++ b/src/libsyntax/feature_gate.rs
@@ -200,9 +200,6 @@ declare_features! (
     // rustc internal
     (active, prelude_import, "1.2.0", None),
 
-    // Allows the definition recursive static items.
-    (active, static_recursion, "1.3.0", Some(29719)),
-
     // Allows default type parameters to influence type inference.
     (active, default_type_parameter_fallback, "1.3.0", Some(27336)),
 
@@ -328,6 +325,10 @@ declare_features! (
 
     // Used to identify crates that contain sanitizer runtimes
     // rustc internal
+    (active, closure_to_fn_coercion, "1.17.0", Some(39817)),
+
+    // Used to identify crates that contain sanitizer runtimes
+    // rustc internal
     (active, sanitizer_runtime, "1.17.0", None),
 );
 
@@ -387,6 +388,8 @@ declare_features! (
     (accepted, static_in_const, "1.17.0", Some(35897)),
     // Allows field shorthands (`x` meaning `x: x`) in struct literal expressions.
     (accepted, field_init_shorthand, "1.17.0", Some(37340)),
+    // Allows the definition recursive static items.
+    (accepted, static_recursion, "1.17.0", Some(29719)),
 );
 // If you change this, please modify src/doc/unstable-book as well. You must
 // move that documentation into the relevant place in the other docs, and
@@ -982,6 +985,9 @@ pub const EXPLAIN_DERIVE_UNDERSCORE: &'static str =
 pub const EXPLAIN_PLACEMENT_IN: &'static str =
     "placement-in expression syntax is experimental and subject to change.";
 
+pub const CLOSURE_TO_FN_COERCION: &'static str =
+    "non-capturing closure to fn coercion is experimental";
+
 struct PostExpansionVisitor<'a> {
     context: &'a Context<'a>,
 }