Rollup merge of #49699 - zesterer:master, r=joshtriplett

Removed 'proc' from the reserved keywords list

Remove 'proc' from the reserved keywords list.

'proc' is a very useful identifier name for a lot of things. It's especially useful when dealing with processes, operating system internals, and kernel development.

src/libsyntax_pos/symbol.rs

@@ -336,24 +336,23 @@ pub fn fresh() -> Self {
     (46, Offsetof,           "offsetof")
     (47, Override,           "override")
     (48, Priv,               "priv")
-    (49, Proc,               "proc")
-    (50, Pure,               "pure")
-    (51, Sizeof,             "sizeof")
-    (52, Typeof,             "typeof")
-    (53, Unsized,            "unsized")
-    (54, Virtual,            "virtual")
-    (55, Yield,              "yield")
+    (49, Pure,               "pure")
+    (50, Sizeof,             "sizeof")
+    (51, Typeof,             "typeof")
+    (52, Unsized,            "unsized")
+    (53, Virtual,            "virtual")
+    (54, Yield,              "yield")
 
     // Special lifetime names
-    (56, UnderscoreLifetime, "'_")
-    (57, StaticLifetime,     "'static")
+    (55, UnderscoreLifetime, "'_")
+    (56, StaticLifetime,     "'static")
 
     // Weak keywords, have special meaning only in specific contexts.
-    (58, Auto,               "auto")
-    (59, Catch,              "catch")
-    (60, Default,            "default")
-    (61, Dyn,                "dyn")
-    (62, Union,              "union")
+    (57, Auto,               "auto")
+    (58, Catch,              "catch")
+    (59, Default,            "default")
+    (60, Dyn,                "dyn")
+    (61, Union,              "union")
 }
 
 // If an interner exists, return it. Otherwise, prepare a fresh one.

src/test/parse-fail/obsolete-proc.rs

@@ -1,19 +0,0 @@
-// Copyright 2014 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.
-
-// compile-flags: -Z parse-only
-
-// Test that we generate obsolete syntax errors around usages of `proc`.
-
-fn foo(p: proc()) { } //~ ERROR expected type, found reserved keyword `proc`
-
-fn bar() { proc() 1; } //~ ERROR expected expression, found reserved keyword `proc`
-
-fn main() { }