---

yaml
---
r: 157661
b: refs/heads/snap-stage3
c: 14398f2
h: refs/heads/master
i:
  157659: 54deace
v: v3

Author: ftxqxd

[refs]

@@ -1,7 +1,7 @@
 ---
 refs/heads/master: 065caf34f5ff29e04605f95d9c5d511af219439a
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
-refs/heads/snap-stage3: fb00015246824313e8882935c9ba175ea6daf9d4
+refs/heads/snap-stage3: 14398f29290b0d96dbe60f329b69062442eefb33
 refs/heads/try: 0ee4d8b0b112c608646fa75463ab4dc59132efd9
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b

branches/snap-stage3/src/libsyntax/parse/parser.rs

@@ -3592,6 +3592,16 @@ impl<'a> Parser<'a> {
             let hi = self.span.hi;
 
             if id.name == token::special_idents::invalid.name {
+                if self.token == token::Dot {
+                    let span = self.span;
+                    let token_string = self.this_token_to_string();
+                    self.span_err(span,
+                                  format!("expected statement, found `{}`",
+                                          token_string).as_slice());
+                    let mac_span = mk_sp(lo, hi);
+                    self.span_help(mac_span, "try parenthesizing this macro invocation");
+                    self.abort_if_errors();
+                }
                 P(spanned(lo, hi, StmtMac(
                     spanned(lo, hi, MacInvocTT(pth, tts, EMPTY_CTXT)), false)))
             } else {

branches/snap-stage3/src/test/compile-fail/macro-invocation-dot-help.rs

@@ -0,0 +1,14 @@
+// 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.
+
+fn main() {
+    foo!() //~ HELP try parenthesizing this macro invocation
+    .bar //~ ERROR expected statement
+}