* parse.y (dsym): allow empty symbols. [ruby-core:15248]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15349 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 6 deletions

diff --git a/ChangeLog b/ChangeLog
index fd81b1a858..503f3da47f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Thu Jan 31 02:15:49 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* parse.y (dsym): allow empty symbols.  [ruby-core:15248]
+
 Thu Jan 31 00:01:51 2008  Tanaka Akira  <akr@fsij.org>
 
 	* io.c (select_internal): fix SEGV by `select [STDIN],nil,[STDIN]'.
diff --git a/parse.y b/parse.y
index 3718d99a2b..377b8e9f23 100644
--- a/parse.y
+++ b/parse.y
@@ -3868,8 +3868,7 @@ dsym		: tSYMBEG xstring_contents tSTRING_END
 		    /*%%%*/
 			lex_state = EXPR_ENDARG;
 			if (!($$ = $2)) {
-			    $$ = NEW_NIL();
-			    yyerror("empty symbol literal");
+			    $$ = NEW_LIT(ID2SYM(rb_intern("")));
 			}
 			else {
 			    VALUE lit;
@@ -3880,10 +3879,6 @@ dsym		: tSYMBEG xstring_contents tSTRING_END
 				break;
 			      case NODE_STR:
 				lit = $$->nd_lit;
-				if (RSTRING_LEN(lit) == 0) {
-				    yyerror("empty symbol literal");
-				    break;
-				}
 				$$->nd_lit = ID2SYM(rb_intern_str(lit));
 				nd_set_type($$, NODE_LIT);
 				break;