parse.y: label cannot be followed by a modifier

* parse.y (parse_ident): just after a label, new expression should
  start, cannot be a modifier.  [ruby-core:65211] [Bug #10279]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47696 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,13 @@
+Tue Sep 23 22:00:26 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (parse_ident): just after a label, new expression should
+	  start, cannot be a modifier.  [ruby-core:65211] [Bug #10279]
+
+Tue Sep 23 22:00:20 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (parse_ident): just after a label, new expression should
+	  start, cannot be a modifier.  [ruby-core:65211] [Bug #10279]
+
 Tue Sep 23 16:07:07 2014  Martin Duerst <duerst@it.aoyama.ac.jp>
 
 	* tool/downloader.rb: added Downloader.download_if_modified_since

parse.y

@@ -7622,7 +7622,7 @@ parse_ident(struct parser_params *parser, int c, int cmd_state)
 		    return keyword_do_block;
 		return keyword_do;
 	    }
-	    if (IS_lex_state_for(state, (EXPR_BEG | EXPR_VALUE)))
+	    if (IS_lex_state_for(state, (EXPR_BEG | EXPR_VALUE | EXPR_LABELARG)))
 		return kw->id[0];
 	    else {
 		if (kw->id[0] != kw->id[1])

test/ruby/test_keyword.rb

@@ -325,7 +325,9 @@ class TestKeywordArguments < Test::Unit::TestCase
     assert_equal([[:keyreq, :a], [:keyrest, :b]], o.method(:bar).parameters, feature7701)
     assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar(c: bug8139)}
     assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar}
+  end
 
+  def test_required_keyword_with_newline
     bug9669 = '[ruby-core:61658] [Bug #9669]'
     assert_nothing_raised(SyntaxError, bug9669) do
       eval(<<-'end;', nil, __FILE__, __LINE__)
@@ -335,6 +337,7 @@ class TestKeywordArguments < Test::Unit::TestCase
       end;
     end
     assert_equal(42, bug9669.foo(a: 42))
+    o = nil
     assert_nothing_raised(SyntaxError, bug9669) do
       eval(<<-'end;', nil, __FILE__, __LINE__)
         o = {
@@ -346,6 +349,17 @@ class TestKeywordArguments < Test::Unit::TestCase
     assert_equal({a: 1}, o, bug9669)
   end
 
+  def test_required_keyword_with_reserved
+    bug10279 = '[ruby-core:65211] [Bug #10279]'
+    h = nil
+    assert_nothing_raised(SyntaxError, bug10279) do
+      break eval(<<-'end;', nil, __FILE__, __LINE__)
+        h = {a: if true then 42 end}
+      end;
+    end
+    assert_equal({a: 42}, h, bug10279)
+  end
+
   def test_block_required_keyword
     feature7701 = '[ruby-core:51454] [Feature #7701] required keyword argument'
     b = assert_nothing_raised(SyntaxError, feature7701) do