parse.y: invalid symbol

* parse.y (parser_yylex): ':' separated by a comment and a newline
  is not valid as symbol.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52418 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sun Nov  1 09:12:10 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (parser_yylex): ':' separated by a comment and a newline
+	  is not valid as symbol.
+
 Sat Oct 31 20:15:48 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
 
 	* test/openssl/test_pair.rb: skipped tests if openssl doesn't support

parse.y

@@ -8426,7 +8426,7 @@ parser_yylex(struct parser_params *parser)
 	    lex_state = EXPR_DOT;
 	    return tCOLON2;
 	}
-	if (IS_END() || ISSPACE(c)) {
+	if (IS_END() || ISSPACE(c) || c == '#') {
 	    pushback(c);
 	    warn_balanced(":", "symbol literal");
 	    lex_state = EXPR_BEG;

test/ruby/test_syntax.rb

@@ -612,6 +612,12 @@ def test_too_big_nth_ref
     end
   end
 
+  def test_invalid_symbol_space
+    assert_syntax_error(": foo", /unexpected ':'/)
+    assert_syntax_error(": #\n foo", /unexpected ':'/)
+    assert_syntax_error(":#\n foo", /unexpected ':'/)
+  end
+
   private
 
   def not_label(x) @result = x; @not_label ||= nil end