---

yaml
---
r: 186047
b: refs/heads/auto
c: 0905c8a
h: refs/heads/master
i:
  186045: 7a3087c
  186043: 34d8269
  186039: da91fe4
  186031: 56487d1
  186015: b671d65
  185983: 8c0ae4d
v: v3

Author: bors

[refs]

@@ -10,7 +10,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 60f7732ccd9b0ad50490457ddd02a4a48cf74e74
+refs/heads/auto: 0905c8a5ec856a6b972fcb239df2b8f6e82d2418
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/libsyntax/parse/parser.rs

@@ -3538,6 +3538,19 @@ impl<'a> Parser<'a> {
                         self.bump();
                         pat = PatStruct(enum_path, fields, etc);
                     }
+                    token::DotDotDot => {
+                        let hi = self.last_span.hi;
+                        let start = self.mk_expr(lo, hi, ExprPath(None, enum_path));
+                        self.eat(&token::DotDotDot);
+                        let end = if self.token.is_ident() || self.token.is_path() {
+                            let path = self.parse_path(LifetimeAndTypesWithColons);
+                            let hi = self.span.hi;
+                            self.mk_expr(lo, hi, ExprPath(None, path))
+                        } else {
+                            self.parse_literal_maybe_minus()
+                        };
+                        pat = PatRange(start, end);
+                    }
                     _ => {
                         let mut args: Vec<P<Pat>> = Vec::new();
                         match self.token {

branches/auto/src/test/run-pass/issue-21475.rs

@@ -0,0 +1,25 @@
+// 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.
+
+use m::{START, END};
+
+fn main() {
+    match 42u32 {
+        m::START...m::END => {},
+        0u32...m::END => {},
+        m::START...59u32 => {},
+        _  => {},
+    }
+}
+
+mod m {
+  pub const START: u32 = 4;
+  pub const END:   u32 = 14;
+}