rustc: Stabilize the proc_macro feature

This commit stabilizes the `proc_macro` and `proc_macro_lib` features in the
compiler to stabilize the "Macros 1.1" feature of the language. Many more
details can be found on the tracking issue, #35900.

Closes #35900

src/test/compile-fail-fulldeps/proc-macro/attribute.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-a-b.rs

@@ -11,7 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro, proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-a.rs

@@ -11,8 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-b.rs

@@ -11,8 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-bad.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 // force-host
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-panic.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 // force-host
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-unstable-2.rs

@@ -11,8 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/auxiliary/derive-unstable.rs

@@ -11,8 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/compile-fail-fulldeps/proc-macro/define-two.rs

@@ -11,7 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/compile-fail-fulldeps/proc-macro/derive-bad.rs

@@ -10,8 +10,6 @@
 
 // aux-build:derive-bad.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_bad;
 

src/test/compile-fail-fulldeps/proc-macro/derive-still-gated.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-a.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/expand-to-unstable-2.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-unstable-2.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/expand-to-unstable.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-unstable.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/export-macro.rs

@@ -11,7 +11,6 @@
 // error-pattern: cannot export macro_rules! macros from a `proc-macro` crate
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
 
 #[macro_export]
 macro_rules! foo {

src/test/compile-fail-fulldeps/proc-macro/feature-gate-1.rs

@@ -1,13 +0,0 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// error-pattern: the `proc-macro` crate type is experimental
-
-#![crate_type = "proc-macro"]

src/test/compile-fail-fulldeps/proc-macro/feature-gate-2.rs

@@ -1,13 +0,0 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-extern crate proc_macro; //~ ERROR: use of unstable library feature
-
-fn main() {}

src/test/compile-fail-fulldeps/proc-macro/feature-gate-3.rs

@@ -1,15 +0,0 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![crate_type = "proc-macro"]
-
-#[proc_macro_derive(Foo)] //~ ERROR: is an experimental feature
-pub fn foo() {
-}

src/test/compile-fail-fulldeps/proc-macro/feature-gate-4.rs

@@ -1,17 +0,0 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-// aux-build:derive-a.rs
-
-#[macro_use]
-extern crate derive_a;
-
-#[derive(A)] //~ ERROR custom derive macros are experimentally supported
-struct S;

src/test/compile-fail-fulldeps/proc-macro/feature-gate-5.rs

@@ -1,12 +0,0 @@
-// Copyright 2016 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution and at
-// http://rust-lang.org/COPYRIGHT.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#[cfg(proc_macro)] //~ ERROR: experimental and subject to change
-fn foo() {}

src/test/compile-fail-fulldeps/proc-macro/illegal-proc-macro-derive-use.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(proc_macro, proc_macro_lib)]
-
 extern crate proc_macro;
 
 #[proc_macro_derive(Foo)]

src/test/compile-fail-fulldeps/proc-macro/import.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-a.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/issue-37788.rs

@@ -10,8 +10,6 @@
 
 // aux-build:derive-a-b.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_a_b;
 

src/test/compile-fail-fulldeps/proc-macro/item-error.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-b.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/load-panic.rs

@@ -10,8 +10,6 @@
 
 // aux-build:derive-panic.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_panic;
 

src/test/compile-fail-fulldeps/proc-macro/proc-macro-attributes.rs

@@ -10,7 +10,6 @@
 
 // aux-build:derive-b.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/pub-at-crate-root.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/compile-fail-fulldeps/proc-macro/shadow-builtin.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/compile-fail-fulldeps/proc-macro/shadow.rs

@@ -10,8 +10,6 @@
 
 // aux-build:derive-a.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_a;
 #[macro_use]

src/test/compile-fail-fulldeps/proc-macro/signature.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 #![allow(warnings)]
 
 extern crate proc_macro;

src/test/run-make/issue-37839/a.rs

@@ -8,6 +8,5 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(proc_macro)]
 #![allow(unused)]
 #![crate_type = "proc-macro"]

src/test/run-make/issue-37893/a.rs

@@ -8,6 +8,5 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(proc_macro)]
 #![allow(unused)]
 #![crate_type = "proc-macro"]

src/test/run-make/issue-38237/foo.rs

@@ -9,7 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-make/rustc-macro-dep-files/bar.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate foo;
 

src/test/run-make/rustc-macro-dep-files/foo.rs

@@ -9,8 +9,6 @@
 // except according to those terms.
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/add-impl.rs

@@ -10,8 +10,6 @@
 
 // aux-build:add-impl.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate add_impl;
 

src/test/run-pass-fulldeps/proc-macro/append-impl.rs

@@ -10,7 +10,6 @@
 
 // aux-build:append-impl.rs
 
-#![feature(proc_macro)]
 #![allow(warnings)]
 
 #[macro_use]

src/test/run-pass-fulldeps/proc-macro/auxiliary/add-impl.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/append-impl.rs

@@ -11,8 +11,6 @@
 // force-host
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-a.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-atob.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-b.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-ctod.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-nothing.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-reexport.rs

@@ -10,7 +10,7 @@
 
 // ignore-test
 
-#![feature(macro_reexport, proc_macro)]
+#![feature(macro_reexport)]
 
 #[macro_reexport(A)]
 extern crate derive_a;

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-same-struct.rs

@@ -11,9 +11,6 @@
 // no-prefer-dynamic
 // compile-flags:--crate-type proc-macro
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
-
 extern crate proc_macro;
 
 use proc_macro::TokenStream;

src/test/run-pass-fulldeps/proc-macro/auxiliary/double.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/auxiliary/expand-with-a-macro.rs

@@ -11,8 +11,6 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![deny(warnings)]
 
 extern crate proc_macro;

src/test/run-pass-fulldeps/proc-macro/crate-var.rs

@@ -10,7 +10,6 @@
 
 // aux-build:double.rs
 
-#![feature(proc_macro)]
 #![allow(unused)]
 
 #[macro_use]

src/test/run-pass-fulldeps/proc-macro/derive-b.rs

@@ -11,8 +11,6 @@
 // aux-build:derive-b.rs
 // ignore-stage1
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_b;
 

src/test/run-pass-fulldeps/proc-macro/derive-same-struct.rs

@@ -10,8 +10,6 @@
 
 // aux-build:derive-same-struct.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_same_struct;
 

src/test/run-pass-fulldeps/proc-macro/derive-test.rs

@@ -12,8 +12,6 @@
 // compile-flags: --test
 
 #![crate_type = "proc-macro"]
-#![feature(proc_macro)]
-#![feature(proc_macro, proc_macro_lib)]
 
 extern crate proc_macro;
 

src/test/run-pass-fulldeps/proc-macro/expand-with-a-macro.rs

@@ -11,7 +11,6 @@
 // aux-build:expand-with-a-macro.rs
 // ignore-stage1
 
-#![feature(proc_macro)]
 #![deny(warnings)]
 
 #[macro_use]

src/test/run-pass-fulldeps/proc-macro/load-two.rs

@@ -11,8 +11,6 @@
 // aux-build:derive-atob.rs
 // aux-build:derive-ctod.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_atob;
 #[macro_use]

src/test/run-pass-fulldeps/proc-macro/smoke.rs

@@ -11,8 +11,6 @@
 // aux-build:derive-a.rs
 // ignore-stage1
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_a;
 

src/test/run-pass-fulldeps/proc-macro/struct-field-macro.rs

@@ -11,8 +11,6 @@
 // aux-build:derive-nothing.rs
 // ignore-stage1
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_nothing;
 

src/test/run-pass-fulldeps/proc-macro/use-reexport.rs

@@ -11,8 +11,6 @@
 // aux-build:derive-a.rs
 // aux-build:derive-reexport.rs
 
-#![feature(proc_macro)]
-
 #[macro_use]
 extern crate derive_reexport;
 

src/test/rustdoc/rustc-macro-crate.rs

@@ -10,8 +10,6 @@
 
 // no-prefer-dynamic
 
-#![feature(proc_macro)]
-#![feature(proc_macro_lib)]
 #![crate_type = "proc-macro"]
 
 extern crate proc_macro;