Don't feature gate bang macros on 'proc_macro_path_invoc'.

Author: SergioBenitez

src/librustc_resolve/macros.rs

@@ -397,7 +397,7 @@ impl<'a> Resolver<'a> {
 
     fn resolve_macro_to_def(&mut self, scope: Mark, path: &ast::Path, kind: MacroKind, force: bool)
                             -> Result<Def, Determinacy> {
-        if path.segments.len() > 1 {
+        if kind != MacroKind::Bang && path.segments.len() > 1 {
             if !self.session.features_untracked().proc_macro_path_invoc {
                 emit_feature_err(
                     &self.session.parse_sess,
@@ -409,6 +409,7 @@ impl<'a> Resolver<'a> {
                 );
             }
         }
+
         let def = self.resolve_macro_to_def_inner(scope, path, kind, force);
         if def != Err(Determinacy::Undetermined) {
             // Do not report duplicated errors on every undetermined resolution.

src/test/compile-fail/extern-macro.rs

@@ -10,7 +10,7 @@
 
 // #41719
 
-#![feature(use_extern_macros, proc_macro_path_invoc)]
+#![feature(use_extern_macros)]
 
 fn main() {
     enum Foo {}

src/test/compile-fail/macros-nonfatal-errors.rs

@@ -13,7 +13,6 @@
 
 #![feature(asm)]
 #![feature(trace_macros, concat_idents)]
-#![feature(proc_macro_path_invoc)]
 
 #[derive(Default)] //~ ERROR
 enum OrDeriveThis {}

src/test/compile-fail/privacy/associated-item-privacy-inherent.rs

@@ -10,7 +10,6 @@
 
 #![feature(decl_macro, associated_type_defaults)]
 #![allow(unused, private_in_public)]
-#![feature(proc_macro_path_invoc)]
 
 mod priv_nominal {
     pub struct Pub;

src/test/compile-fail/privacy/associated-item-privacy-trait.rs

@@ -10,7 +10,6 @@
 
 // ignore-tidy-linelength
 
-#![feature(proc_macro_path_invoc)]
 #![feature(decl_macro, associated_type_defaults)]
 #![allow(unused, private_in_public)]
 

src/test/compile-fail/privacy/associated-item-privacy-type-binding.rs

@@ -8,7 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(proc_macro_path_invoc)]
 #![feature(decl_macro, associated_type_defaults)]
 #![allow(unused, private_in_public)]
 

src/test/compile-fail/private-inferred-type-3.rs

@@ -18,7 +18,6 @@
 // error-pattern:type `fn(u8) -> ext::PubTupleStruct {ext::PubTupleStruct::{{constructor}}}` is priv
 // error-pattern:type `for<'r> fn(&'r ext::Pub<u8>) {<ext::Pub<u8>>::priv_method}` is private
 
-#![feature(proc_macro_path_invoc)]
 #![feature(decl_macro)]
 
 extern crate private_inferred_type as ext;

src/test/compile-fail/private-inferred-type.rs

@@ -11,7 +11,6 @@
 #![feature(associated_consts)]
 #![feature(decl_macro)]
 #![allow(private_in_public)]
-#![feature(proc_macro_path_invoc)]
 
 mod m {
     fn priv_fn() {}

src/test/run-pass-fulldeps/macro-quote-test.rs

@@ -13,7 +13,7 @@
 // aux-build:hello_macro.rs
 // ignore-stage1
 
-#![feature(proc_macro, proc_macro_path_invoc, proc_macro_non_items)]
+#![feature(proc_macro, proc_macro_non_items)]
 
 extern crate hello_macro;
 

src/test/run-pass/hygiene/issue-47311.rs

@@ -10,7 +10,7 @@
 
 // ignore-pretty pretty-printing is unhygienic
 
-#![feature(decl_macro, proc_macro_path_invoc)]
+#![feature(decl_macro)]
 #![allow(unused)]
 
 macro m($S:ident, $x:ident) {